Update README.md

* Netplay sync inputs

* use wrapping add

* non blocking

* more

* more

* more

* more

* more

* more

* more

* more

* more

* more

* more

* more

* message

* more

* close

* fixes

* redirect rumble

* more

* fix

* more

* messages

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gopher64"
-version = "0.1.18"
+version = "0.1.20"
 edition = "2021"
 rust-version = "1.82"
 
@@ -15,20 +15,32 @@ chrono = "0.4"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 eframe = "0.30"
-rfd = "0.15"
 sha2 = "0.10"
 rusttype = "0.9"
-futures = "0.3"
+tokio = { version = "1.43", features = ["rt-multi-thread", "macros"] }
 sdl2-sys = "0.37"
 spin_sleep = "1.3"
 encoding_rs = "0.8"
+mimalloc = "0.1"
+regex = "1.11"
+tungstenite = "0.26"
 clap = { version = "4.4", features = ["derive"] }
 
+[dependencies.reqwest]
+version = "0.12"
+default-features = false
+features = ["http2","rustls-tls","charset","json"]
+
 [dependencies.sdl2]
 version = "0.37"
 default-features = false
 features = ["static-link","bundled"]
 
+[dependencies.rfd]
+version = "0.15"
+default-features = false
+features = ["xdg-portal","tokio"]
+
 [build-dependencies]
 winres = "0.1"
 bindgen = "0.71"

README.md

@@ -1,4 +1,5 @@
 # gopher64
+(gopher64 also has a GUI that can be launched by just running the executable)
 
 ```
 Usage: gopher64 [OPTIONS] [GAME]
@@ -11,6 +12,8 @@ Options:
           
   -c, --configure-input-profile <PROFILE_NAME>
           Create a new input profile (keyboard/gamepad mappings).
+  -u, --use-dinput
+          Use DirectInput when configuring a new input profile.
   -b, --bind-input-profile <PROFILE_NAME>
           Must also specify --port. Used to bind a previously created profile to a port
   -l, --list-controllers
@@ -19,11 +22,29 @@ Options:
           Must also specify --port. Used to assign a controller listed in --list-controllers to a port
   -p, --port <PORT>
           Valid values: 1-4. To be used alongside --bind-input-profile and --assign-controller
+  -z, --clear-input-bindings
+          Clear all input profile bindings and controller assignments
   -h, --help
           Print help
   -V, --version
           Print version
 ```
+## discord
+
+There is no dedicated server at this point, but there is a #gopher64 channel on the simple64 server: https://discord.gg/R2cz7S94vD
+
+## controls
+
+Keys are mapped according to mupen64plus defaults: https://mupen64plus.org/wiki/index.php/KeyboardSetup#2._Default_Key_Mappings_for_SDL-Input_Plugin. Xbox-style controllers also have a default mapping applied.
+
+You can create you own mappings by running `./gopher64 --configure-input-profile my_profile`. You then bind that profile to a port: `./gopher64 --bind-input-profile my_profile --port 1`
+
+In order to use a controller (for example, an Xbox controller), run `./gopher64 --list-controllers` to get a list of attached controllers, and then assign it by doing `./gopher64 --assign-controller <controller_number> --port 1`
+
+## portable mode
+
+If you would like to keep all the game data in the same folder as executable, you just need to create a file called "portable.txt" in the same directory as the executable.
+
 ## goals
 
 1. Performance. I want to be able to use this emulator on my laptop.
@@ -38,18 +59,6 @@ Options:
 4. `cargo build --release`
 5. `./target/release/gopher64 /path/to/rom.z64`
 
-## controls
-
-Keys are mapped according to mupen64plus defaults: https://mupen64plus.org/wiki/index.php/KeyboardSetup#2._Default_Key_Mappings_for_SDL-Input_Plugin. Xbox-style controllers also have a default mapping applied.
-
-You can create you own mappings by running `./gopher64 --configure-input-profile my_profile`. You then bind that profile to a port: `./gopher64 --bind-input-profile my_profile --port 1`
-
-In order to use a controller (for example, an Xbox controller), run `./gopher64 --list-controllers` to get a list of attached controllers, and then assign it by doing `./gopher64 --assign-controller <controller_number> --port 1`
-
-## portable mode
-
-If you would like to keep all the game data in the same folder as executable, you just need to create a file called "portable.txt" in the same directory as the executable.
-
 ## contributing
 
 I am very open to contributions! Please reach out to me via a GitHub issue, or via discord (loganmc10) before doing substantial work on a PR.

build.rs

@@ -96,7 +96,6 @@ fn main() {
         .allowlist_function("rdp_set_vi_register")
         .allowlist_function("rdp_update_screen")
         .allowlist_function("rdp_process_commands")
-        .allowlist_function("rdp_full_sync")
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .generate()
         .expect("Unable to generate bindings");

parallel-rdp/interface.cpp

@@ -51,6 +51,7 @@ enum vi_registers
 };
 
 static bool fullscreen;
+static bool integer_scaling;
 static SDL_Window *window;
 static RDP::CommandProcessor *processor;
 static SDL_WSIPlatform *wsi_platform;
@@ -59,12 +60,8 @@ static uint32_t cmd_data[0x00040000 >> 2];
 static int cmd_cur;
 static int cmd_ptr;
 static bool emu_running;
-static uint64_t rdp_sync_signal;
 static GFX_INFO gfx_info;
 
-static uint64_t last_frame_counter;
-static uint64_t frame_counter;
-
 static const unsigned cmd_len_lut[64] = {
 	1,
 	1,
@@ -166,13 +163,14 @@ int sdl_event_filter(void *userdata, SDL_Event *event)
 	return 0;
 }
 
-void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen, bool _upscale)
+void rdp_init(void *_window, GFX_INFO _gfx_info, bool _upscale, bool _integer_scaling, bool _fullscreen)
 {
 	window = (SDL_Window *)_window;
 	SDL_AddEventWatch(sdl_event_filter, nullptr);
 
 	gfx_info = _gfx_info;
 	fullscreen = _fullscreen;
+	integer_scaling = _integer_scaling;
 	bool window_vsync = 0;
 	wsi = new WSI;
 	wsi_platform = new SDL_WSIPlatform;
@@ -207,8 +205,6 @@ void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen, bool _upscale
 	wsi->begin_frame();
 
 	emu_running = true;
-	last_frame_counter = 0;
-	frame_counter = 0;
 }
 
 void rdp_close()
@@ -234,34 +230,42 @@ void rdp_close()
 
 static void calculate_viewport(float *x, float *y, float *width, float *height)
 {
-	bool window_widescreen = false;
-	int32_t display_width = (window_widescreen ? 854 : 640);
-	int32_t display_height = 480;
+	const int32_t display_width = 320;
+	const int32_t display_height = 240;
 
 	int w, h;
 	SDL_GetWindowSize(window, &w, &h);
 
-	*width = w;
-	*height = h;
-	*x = 0;
-	*y = 0;
-	int32_t hw = display_height * *width;
-	int32_t wh = display_width * *height;
+	if (integer_scaling)
+	{
+		// Integer scaling path
+		int scale_x = w / display_width;
+		int scale_y = h / display_height;
+		int scale = (scale_x < scale_y) ? scale_x : scale_y;
+		if (scale < 1)
+			scale = 1;
 
-	// add letterboxes or pillarboxes if the window has a different aspect ratio
-	// than the current display mode
-	if (hw > wh)
-	{
-		int32_t w_max = wh / display_height;
-		*x += (*width - w_max) / 2;
-		*width = w_max;
+		// Calculate scaled dimensions
+		int scaled_width = display_width * scale;
+		int scaled_height = display_height * scale;
+
+		*width = scaled_width;
+		*height = scaled_height;
 	}
-	else if (hw < wh)
+	else
 	{
-		int32_t h_max = hw / display_width;
-		*y += (*height - h_max) / 2;
-		*height = h_max;
+		// Regular scaling path - maintain aspect ratio
+		float scale_x = w / (float)display_width;
+		float scale_y = h / (float)display_height;
+		float scale = (scale_x < scale_y) ? scale_x : scale_y;
+
+		*width = display_width * scale;
+		*height = display_height * scale;
 	}
+
+	// Center the viewport
+	*x = (w - *width) / 2.0f;
+	*y = (h - *height) / 2.0f;
 }
 
 static void render_frame(Vulkan::Device &device)
@@ -326,7 +330,6 @@ bool rdp_update_screen()
 	render_frame(device);
 	wsi->end_frame();
 	wsi->begin_frame();
-	frame_counter++;
 	return emu_running;
 }
 
@@ -433,15 +436,7 @@ uint64_t rdp_process_commands()
 
 		if (RDP::Op(command) == RDP::Op::SyncFull)
 		{
-			if (frame_counter != last_frame_counter) // Only sync once per frame
-			{
-				rdp_sync_signal = processor->signal_timeline();
-				last_frame_counter = frame_counter;
-			}
-			else
-			{
-				rdp_sync_signal = 0;
-			}
+			processor->wait_for_timeline(processor->signal_timeline());
 
 			uint32_t width = viCalculateHorizonalWidth(*gfx_info.VI_H_START_REG, *gfx_info.VI_X_SCALE_REG, *gfx_info.VI_WIDTH_REG);
 			if (width == 0)
@@ -468,11 +463,3 @@ uint64_t rdp_process_commands()
 
 	return interrupt_timer;
 }
-
-void rdp_full_sync()
-{
-	if (rdp_sync_signal)
-	{
-		processor->wait_for_timeline(rdp_sync_signal);
-	}
-}

parallel-rdp/interface.hpp

@@ -23,12 +23,11 @@ extern "C"
 		uint32_t *VI_WIDTH_REG;
 	} GFX_INFO;
 
-	void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen, bool _upscale);
+	void rdp_init(void *_window, GFX_INFO _gfx_info, bool _upscale, bool _integer_scaling, bool _fullscreen);
 	void rdp_close();
 	void rdp_set_vi_register(uint32_t reg, uint32_t value);
 	bool rdp_update_screen();
 	uint64_t rdp_process_commands();
-	void rdp_full_sync();
 
 #ifdef __cplusplus
 }

src/compat/aarch64.rs

@@ -1,46 +1,46 @@
 unsafe extern "C" {
     #[link_name = "_mm_srli_epi16__extern"]
-    pub fn _mm_srli_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> __m128i;
+    fn _mm_srli_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> __m128i;
 
     #[link_name = "_mm_insert_epi8__extern"]
-    pub fn _mm_insert_epi8(
+    fn _mm_insert_epi8(
         __a: __m128i,
         __i: ::std::os::raw::c_int,
         __imm8: ::std::os::raw::c_int,
     ) -> __m128i;
 
     #[link_name = "_mm_extract_epi8__extern"]
-    pub fn _mm_extract_epi8(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+    fn _mm_extract_epi8(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
 
     #[link_name = "_mm_insert_epi16__extern"]
-    pub fn _mm_insert_epi16(
+    fn _mm_insert_epi16(
         __a: __m128i,
         __i: ::std::os::raw::c_int,
         __imm8: ::std::os::raw::c_int,
     ) -> __m128i;
 
     #[link_name = "_mm_extract_epi16__extern"]
-    pub fn _mm_extract_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+    fn _mm_extract_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
 
     #[link_name = "_mm_insert_epi32__extern"]
-    pub fn _mm_insert_epi32(
+    fn _mm_insert_epi32(
         __a: __m128i,
         __i: ::std::os::raw::c_int,
         __imm8: ::std::os::raw::c_int,
     ) -> __m128i;
 
     #[link_name = "_mm_extract_epi32__extern"]
-    pub fn _mm_extract_epi32(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+    fn _mm_extract_epi32(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
 
     #[link_name = "_mm_insert_epi64__extern"]
-    pub fn _mm_insert_epi64(
+    fn _mm_insert_epi64(
         __a: __m128i,
         __i: ::std::os::raw::c_longlong,
         __imm8: ::std::os::raw::c_int,
     ) -> __m128i;
 
     #[link_name = "_mm_extract_epi64__extern"]
-    pub fn _mm_extract_epi64(
+    fn _mm_extract_epi64(
         __a: __m128i,
         __imm8: ::std::os::raw::c_int,
     ) -> ::std::os::raw::c_longlong;

src/device.rs

@@ -10,6 +10,7 @@ include!(concat!(env!("OUT_DIR"), "/simd_bindings.rs"));
 #[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
+use crate::netplay;
 use crate::ui;
 use std::collections::HashMap;
 use std::fs;
@@ -30,7 +31,6 @@ pub mod exceptions;
 pub mod fpu_instructions;
 pub mod is_viewer;
 pub mod memory;
-pub mod mempak;
 pub mod mi;
 pub mod pi;
 pub mod pif;
@@ -46,16 +46,13 @@ pub mod sram;
 pub mod tlb;
 pub mod unmapped;
 pub mod vi;
-pub mod vru;
 
 pub fn run_game(
-    file_path: &std::path::Path,
+    rom_contents: Vec<u8>,
     data_dir: std::path::PathBuf,
     device: &mut Device,
     fullscreen: bool,
 ) {
-    let rom_contents = get_rom_contents(file_path);
-
     cart_rom::init(device, rom_contents); // cart needs to come before rdram
 
     // rdram pointer is shared with parallel-rdp
@@ -68,7 +65,7 @@ pub fn run_game(
     mi::init(device);
     pif::init(device);
     if device.ui.config.input.emulate_vru {
-        vru::init(device);
+        controller::vru::init(device);
     }
     memory::init(device);
     rsp_interface::init(device);
@@ -77,13 +74,13 @@ pub fn run_game(
     cpu::init(device);
 
     ui::storage::init(&mut device.ui, data_dir);
-    ui::storage::load_saves(&mut device.ui);
+    ui::storage::load_saves(&mut device.ui, &mut device.netplay);
     cart_rom::load_rom_save(device);
 
     cpu::run(device);
 
     ui::video::close();
-    ui::storage::write_saves(&device.ui);
+    ui::storage::write_saves(&device.ui, &device.netplay);
 }
 
 fn swap_rom(contents: Vec<u8>) -> Vec<u8> {
@@ -108,11 +105,12 @@ fn swap_rom(contents: Vec<u8>) -> Vec<u8> {
         }
         return data;
     } else {
-        panic!("unknown rom format")
+        let data: Vec<u8> = vec![];
+        data
     }
 }
 
-fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
+pub fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
     let mut contents = vec![];
     if file_path.extension().unwrap().eq_ignore_ascii_case("zip") {
         let zip_file = fs::File::open(file_path).unwrap();
@@ -163,9 +161,10 @@ fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
 }
 
 pub struct Device {
+    pub netplay: Option<netplay::Netplay>,
     pub ui: ui::Ui,
     byte_swap: usize,
-    cpu: cpu::Cpu,
+    pub cpu: cpu::Cpu,
     pif: pif::Pif,
     cart: cart_rom::Cart,
     memory: memory::Memory,
@@ -179,7 +178,7 @@ pub struct Device {
     si: si::Si,
     ri: ri::Ri,
     flashram: sram::Flashram,
-    pub vru: vru::Vru,
+    pub vru: controller::vru::Vru,
 }
 
 impl Device {
@@ -192,6 +191,7 @@ impl Device {
             byte_swap = 3;
         }
         Device {
+            netplay: None,
             ui: ui::Ui::new(config_dir),
             byte_swap,
             cpu: cpu::Cpu {
@@ -288,6 +288,7 @@ impl Device {
                     rx_buf: None,
                     process: None,
                     pak_handler: None,
+                    change_pak: controller::PakType::None,
                 }; 5],
             },
             cart: cart_rom::Cart {
@@ -419,7 +420,7 @@ impl Device {
                 silicon_id: [sram::FLASHRAM_TYPE_ID, sram::MX29L1100_ID],
                 mode: sram::FlashramMode::ReadArray,
             },
-            vru: vru::Vru {
+            vru: controller::vru::Vru {
                 status: 0,
                 voice_state: 0,
                 load_offset: 0,

src/device/ai.rs

@@ -26,7 +26,7 @@ pub struct AiDma {
     pub duration: u64,
 }
 
-pub fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
+fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
     if device.ai.fifo[0].duration == 0 {
         return 0;
     }
@@ -43,7 +43,7 @@ pub fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
     dma_length & !7
 }
 
-pub fn get_dma_duration(device: &device::Device) -> u64 {
+fn get_dma_duration(device: &device::Device) -> u64 {
     let samples_per_sec = device.vi.clock / (1 + device.ai.regs[AI_DACRATE_REG as usize]) as u64;
     let bytes_per_sample = 4; /* XXX: assume 16bit stereo - should depends on bitrate instead */
     let length = (device.ai.regs[AI_LEN_REG as usize] & !7) as u64;
@@ -51,7 +51,7 @@ pub fn get_dma_duration(device: &device::Device) -> u64 {
     length * (device.cpu.clock_rate / (bytes_per_sample * samples_per_sec))
 }
 
-pub fn do_dma(device: &mut device::Device) {
+fn do_dma(device: &mut device::Device) {
     device.ai.last_read = device.ai.fifo[0].length;
 
     if device.ai.delayed_carry {
@@ -71,7 +71,7 @@ pub fn do_dma(device: &mut device::Device) {
     device::mi::schedule_rcp_interrupt(device, device::mi::MI_INTR_AI);
 }
 
-pub fn fifo_push(device: &mut device::Device) {
+fn fifo_push(device: &mut device::Device) {
     let duration = get_dma_duration(device);
 
     if (device.ai.regs[AI_STATUS_REG as usize] & AI_STATUS_BUSY) != 0 {
@@ -91,7 +91,7 @@ pub fn fifo_push(device: &mut device::Device) {
     }
 }
 
-pub fn fifo_pop(device: &mut device::Device) {
+fn fifo_pop(device: &mut device::Device) {
     if device.ai.regs[AI_STATUS_REG as usize] & AI_STATUS_FULL != 0 {
         device.ai.fifo[0].address = device.ai.fifo[1].address;
         device.ai.fifo[0].length = device.ai.fifo[1].length;
@@ -152,7 +152,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
     }
 }
 
-pub fn dma_event(device: &mut device::Device) {
+fn dma_event(device: &mut device::Device) {
     if device.ai.last_read != 0 {
         let diff = device.ai.fifo[0].length - device.ai.last_read;
         ui::audio::play_audio(

src/device/cache.rs

@@ -205,7 +205,7 @@ pub fn dcache_writeback(device: &mut device::Device, line_index: usize) {
     );
 }
 
-pub fn dcache_fill(device: &mut device::Device, line_index: usize, phys_address: u64) {
+fn dcache_fill(device: &mut device::Device, line_index: usize, phys_address: u64) {
     device::cop0::add_cycles(device, 7);
 
     device.memory.dcache[line_index].valid = true;

src/device/cart.rs

@@ -16,13 +16,13 @@ const JDT_AF_RTC: u16 = 0x1000; /* RTC */
 const JDT_EEPROM_4K: u16 = 0x8000; /* 4k EEPROM */
 const JDT_EEPROM_16K: u16 = 0xc000; /* 16k EEPROM */
 const EEPROM_BLOCK_SIZE: usize = 8;
-const EEPROM_MAX_SIZE: usize = 0x800;
+pub const EEPROM_MAX_SIZE: usize = 0x800;
 
 pub struct AfRtc {
     pub control: u16,
 }
 
-pub fn byte2bcd(mut n: u32) -> u8 {
+fn byte2bcd(mut n: u32) -> u8 {
     n %= 100;
     (((n / 10) << 4) | (n % 10)) as u8
 }
@@ -95,13 +95,13 @@ pub fn process(device: &mut device::Device, channel: usize) {
     }
 }
 
-pub fn format_eeprom(device: &mut device::Device) {
+fn format_eeprom(device: &mut device::Device) {
     if device.ui.saves.eeprom.0.len() < EEPROM_MAX_SIZE {
         device.ui.saves.eeprom.0.resize(EEPROM_MAX_SIZE, 0xFF)
     }
 }
 
-pub fn eeprom_read_block(device: &mut device::Device, block: usize, offset: usize) {
+fn eeprom_read_block(device: &mut device::Device, block: usize, offset: usize) {
     let address = device.pif.ram[block] as usize * EEPROM_BLOCK_SIZE;
 
     format_eeprom(device);
@@ -110,7 +110,7 @@ pub fn eeprom_read_block(device: &mut device::Device, block: usize, offset: usiz
         .copy_from_slice(&device.ui.saves.eeprom.0[address..address + EEPROM_BLOCK_SIZE]);
 }
 
-pub fn eeprom_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn eeprom_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     let address = device.pif.ram[block] as usize * EEPROM_BLOCK_SIZE;
 
     format_eeprom(device);
@@ -123,7 +123,7 @@ pub fn eeprom_write_block(device: &mut device::Device, block: usize, offset: usi
     device.ui.saves.eeprom.1 = true
 }
 
-pub fn time2data(device: &mut device::Device, offset: usize) {
+fn time2data(device: &mut device::Device, offset: usize) {
     let now: chrono::DateTime<chrono::Local> = chrono::Local::now();
 
     device.pif.ram[offset] = byte2bcd(now.second());
@@ -136,7 +136,7 @@ pub fn time2data(device: &mut device::Device, offset: usize) {
     device.pif.ram[offset + 7] = byte2bcd((now.year() as u32 - 1900) / 100);
 }
 
-pub fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     match device.pif.ram[block] {
         0 => {
             device.pif.ram[offset] = device.cart.rtc.control as u8;
@@ -155,7 +155,7 @@ pub fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usiz
         }
     }
 }
-pub fn af_rtc_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn af_rtc_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     match device.pif.ram[block] {
         0 => {
             device.cart.rtc.control =

src/device/cart_rom.rs

@@ -144,7 +144,7 @@ pub fn load_rom_save(device: &mut device::Device) {
     }
 }
 
-pub fn set_system_region(device: &mut device::Device, country: u8) {
+fn set_system_region(device: &mut device::Device, country: u8) {
     let pal_codes: [u8; 8] = [b'D', b'F', b'I', b'P', b'S', b'U', b'X', b'Y'];
     for i in pal_codes {
         if country == i {
@@ -153,7 +153,7 @@ pub fn set_system_region(device: &mut device::Device, country: u8) {
     }
 }
 
-pub fn set_cic(device: &mut device::Device) {
+fn set_cic(device: &mut device::Device) {
     let hash = calculate_hash(&device.cart.rom[0x40..0x1000]);
     match hash.as_str() {
         "B99F06C4802C2377E31E388435955EF3E99C618A6D55D24699D828EB1075F1EB" => {
@@ -195,7 +195,7 @@ pub fn set_cic(device: &mut device::Device) {
     }
 }
 
-fn calculate_hash(data: &[u8]) -> String {
+pub fn calculate_hash(data: &[u8]) -> String {
     let mut hasher = Sha256::new();
     hasher.update(data);
     format!("{:X}", hasher.finalize())

src/device/controller.rs

@@ -1,6 +1,11 @@
 use crate::device;
+use crate::netplay;
 use crate::ui;
 
+pub mod mempak;
+pub mod rumble;
+pub mod vru;
+
 pub const JCMD_STATUS: u8 = 0x00;
 pub const JCMD_CONTROLLER_READ: u8 = 0x01;
 const JCMD_PAK_READ: u8 = 0x02;
@@ -12,14 +17,22 @@ const JDT_JOY_ABS_COUNTERS: u16 = 0x0001; /* joystick with absolute coordinates
 //const JDT_JOY_REL_COUNTERS: u16 = 0x0002; /* joystick with relative coordinates (= mouse) */
 const JDT_JOY_PORT: u16 = 0x0004; /* has port for external paks */
 const PAK_CHUNK_SIZE: usize = 0x20;
-const CONT_STATUS_PAK_NOT_PRESENT: u8 = 0;
 const CONT_STATUS_PAK_PRESENT: u8 = 1;
+const CONT_STATUS_PAK_NOT_PRESENT: u8 = 2;
 const CONT_FLAVOR: u16 = JDT_JOY_ABS_COUNTERS | JDT_JOY_PORT;
 
+#[derive(Copy, Clone, PartialEq)]
+pub enum PakType {
+    None = 0,
+    MemPak = 1,
+    RumblePak = 2,
+}
+
 #[derive(Copy, Clone)]
 pub struct PakHandler {
     pub read: fn(&mut device::Device, usize, u16, usize, usize),
     pub write: fn(&mut device::Device, usize, u16, usize, usize),
+    pub pak_type: PakType,
 }
 
 pub fn process(device: &mut device::Device, channel: usize) {
@@ -40,8 +53,34 @@ pub fn process(device: &mut device::Device, channel: usize) {
         }
         JCMD_CONTROLLER_READ => {
             let offset = device.pif.channels[channel].rx_buf.unwrap();
-            let input = ui::input::get(&mut device.ui, channel);
-            device.pif.ram[offset..offset + 4].copy_from_slice(&input.to_ne_bytes());
+            let input = if device.netplay.is_none() {
+                ui::input::get(&mut device.ui, channel)
+            } else {
+                if device.netplay.as_ref().unwrap().player_number as usize == channel {
+                    let local_input = ui::input::get(&mut device.ui, 0);
+                    netplay::send_input(device.netplay.as_ref().unwrap(), local_input);
+                }
+
+                netplay::get_input(device, channel)
+            };
+
+            device.pif.ram[offset..offset + 4].copy_from_slice(&input.0.to_ne_bytes());
+            if input.1 {
+                // pak change button pressed
+                if device::events::get_event(device, device::events::EventType::PakSwitch).is_none()
+                {
+                    device.pif.channels[channel].change_pak =
+                        device.pif.channels[channel].pak_handler.unwrap().pak_type;
+                    device.pif.channels[channel].pak_handler = None;
+                    device::events::create_event(
+                        device,
+                        device::events::EventType::PakSwitch,
+                        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize]
+                            + (device.cpu.clock_rate), // 1 second
+                        pak_switch_event,
+                    )
+                }
+            }
         }
         JCMD_PAK_READ => pak_read_block(
             device,
@@ -61,7 +100,7 @@ pub fn process(device: &mut device::Device, channel: usize) {
     }
 }
 
-pub fn pak_read_block(
+fn pak_read_block(
     device: &mut device::Device,
     addr_acrc: usize,
     data: usize,
@@ -80,7 +119,7 @@ pub fn pak_read_block(
     }
 }
 
-pub fn pak_write_block(
+fn pak_write_block(
     device: &mut device::Device,
     addr_acrc: usize,
     data: usize,
@@ -99,7 +138,7 @@ pub fn pak_write_block(
     }
 }
 
-pub fn data_crc(device: &device::Device, data_offset: usize, size: usize) -> u8 {
+fn data_crc(device: &device::Device, data_offset: usize, size: usize) -> u8 {
     let mut i = 0;
     let mut crc = 0;
 
@@ -118,3 +157,34 @@ pub fn data_crc(device: &device::Device, data_offset: usize, size: usize) -> u8
     }
     crc
 }
+
+fn pak_switch_event(device: &mut device::Device) {
+    for (i, channel) in device.pif.channels.iter_mut().enumerate() {
+        if channel.change_pak != PakType::None {
+            if channel.change_pak == PakType::RumblePak {
+                if device.netplay.is_none() {
+                    device::ui::input::set_rumble(&mut device.ui, i, 0);
+                } else if device.netplay.as_ref().unwrap().player_number as usize == i {
+                    device::ui::input::set_rumble(&mut device.ui, 0, 0);
+                }
+
+                let handler = device::controller::PakHandler {
+                    read: device::controller::mempak::read,
+                    write: device::controller::mempak::write,
+                    pak_type: device::controller::PakType::MemPak,
+                };
+                channel.pak_handler = Some(handler);
+                ui::audio::play_pak_switch(&mut device.ui, PakType::MemPak);
+            } else if channel.change_pak == PakType::MemPak {
+                let handler = device::controller::PakHandler {
+                    read: device::controller::rumble::read,
+                    write: device::controller::rumble::write,
+                    pak_type: device::controller::PakType::RumblePak,
+                };
+                channel.pak_handler = Some(handler);
+                ui::audio::play_pak_switch(&mut device.ui, PakType::RumblePak);
+            }
+            channel.change_pak = PakType::None;
+        }
+    }
+}

src/device/controller/mempak.rs

@@ -1,9 +1,9 @@
 use crate::device;
 
-const MEMPAK_SIZE: usize = 0x8000;
+pub const MEMPAK_SIZE: usize = 0x8000;
 const MPK_PAGE_SIZE: usize = 256;
 
-pub fn format_mempak(device: &mut device::Device) {
+fn format_mempak(device: &mut device::Device) {
     if device.ui.saves.mempak.0.len() < MEMPAK_SIZE * 4 {
         device.ui.saves.mempak.0.resize(MEMPAK_SIZE * 4, 0);
 

src/device/controller/rumble.rs

@@ -0,0 +1,24 @@
+use crate::device;
+
+pub fn read(device: &mut device::Device, _channel: usize, address: u16, data: usize, size: usize) {
+    let value: u8 = if (0x8000..0x9000).contains(&address) {
+        0x80
+    } else {
+        0x00
+    };
+
+    for i in 0..size {
+        device.pif.ram[data + i] = value;
+    }
+}
+
+pub fn write(device: &mut device::Device, channel: usize, address: u16, data: usize, size: usize) {
+    if address == 0xc000 {
+        let rumble = device.pif.ram[data + size - 1];
+        if device.netplay.is_none() {
+            device::ui::input::set_rumble(&mut device.ui, channel, rumble);
+        } else if device.netplay.as_ref().unwrap().player_number as usize == channel {
+            device::ui::input::set_rumble(&mut device.ui, 0, rumble);
+        }
+    }
+}

src/device/controller/vru.rs

@@ -26,8 +26,8 @@ pub struct Vru {
     pub words: Vec<String>,
     pub talking: bool,
     pub word_mappings: HashMap<String, String>,
-    pub window_notifier: Option<std::sync::mpsc::Sender<Vec<String>>>,
-    pub word_receiver: Option<std::sync::mpsc::Receiver<String>>,
+    pub window_notifier: Option<tokio::sync::mpsc::Sender<Vec<String>>>,
+    pub word_receiver: Option<tokio::sync::mpsc::Receiver<String>>,
     pub gui_ctx: Option<egui::Context>,
 }
 
@@ -36,7 +36,7 @@ pub fn init(device: &mut device::Device) {
     create_word_mappings(device);
 }
 
-pub fn reset_vru(device: &mut device::Device) {
+fn reset_vru(device: &mut device::Device) {
     device.vru.status = 0x00;
     if device.cart.rom[0x3E] == /* Japan */ 0x4A || device.cart.rom[0x3E] == /* Demo */ 0x00 {
         device.vru.voice_state = VOICE_STATUS_READY;
@@ -187,7 +187,7 @@ pub fn process(device: &mut device::Device, channel: usize) {
                 ui::vru::prompt_for_match(
                     &device.vru.words,
                     device.vru.window_notifier.as_ref().unwrap(),
-                    device.vru.word_receiver.as_ref().unwrap(),
+                    device.vru.word_receiver.as_mut().unwrap(),
                     device.vru.gui_ctx.as_ref().unwrap(),
                 )
             } else {
@@ -250,11 +250,11 @@ pub fn process(device: &mut device::Device, channel: usize) {
     }
 }
 
-pub fn vru_talking_event(device: &mut device::Device) {
+fn vru_talking_event(device: &mut device::Device) {
     device.vru.talking = false
 }
 
-pub fn create_word_mappings(device: &mut device::Device) {
+fn create_word_mappings(device: &mut device::Device) {
     device.vru.word_mappings = HashMap::from([
         (
             String::from("03A50024000303CF00A80003036000EA"),

src/device/cop0.rs

@@ -99,18 +99,18 @@ pub struct Cop0 {
     pub tlb_entries: [device::tlb::TlbEntry; 32],
 }
 
-pub fn mfc0(device: &mut device::Device, opcode: u32) {
+fn mfc0(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] = device::cpu_instructions::se32(
         (get_control_registers(device, device::cpu_instructions::rd(opcode))) as u32 as i32,
     )
 }
 
-pub fn dmfc0(device: &mut device::Device, opcode: u32) {
+fn dmfc0(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] =
         get_control_registers(device, device::cpu_instructions::rd(opcode))
 }
 
-pub fn mtc0(device: &mut device::Device, opcode: u32) {
+fn mtc0(device: &mut device::Device, opcode: u32) {
     device::cop0::set_control_registers(
         device,
         device::cpu_instructions::rd(opcode),
@@ -120,7 +120,7 @@ pub fn mtc0(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dmtc0(device: &mut device::Device, opcode: u32) {
+fn dmtc0(device: &mut device::Device, opcode: u32) {
     device::cop0::set_control_registers(
         device,
         device::cpu_instructions::rd(opcode),
@@ -128,24 +128,24 @@ pub fn dmtc0(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn tlbr(device: &mut device::Device, _opcode: u32) {
+fn tlbr(device: &mut device::Device, _opcode: u32) {
     device::tlb::read(device, device.cpu.cop0.regs[COP0_INDEX_REG as usize])
 }
 
-pub fn tlbwi(device: &mut device::Device, _opcode: u32) {
+fn tlbwi(device: &mut device::Device, _opcode: u32) {
     device::tlb::write(device, device.cpu.cop0.regs[COP0_INDEX_REG as usize])
 }
 
-pub fn tlbwr(device: &mut device::Device, _opcode: u32) {
+fn tlbwr(device: &mut device::Device, _opcode: u32) {
     let random = set_random_register(device);
     device::tlb::write(device, random)
 }
 
-pub fn tlbp(device: &mut device::Device, _opcode: u32) {
+fn tlbp(device: &mut device::Device, _opcode: u32) {
     device::tlb::probe(device)
 }
 
-pub fn eret(device: &mut device::Device, _opcode: u32) {
+fn eret(device: &mut device::Device, _opcode: u32) {
     if device.cpu.cop0.regs[COP0_STATUS_REG as usize] & COP0_STATUS_ERL != 0 {
         device.cpu.pc = device.cpu.cop0.regs[COP0_ERROREPC_REG as usize];
         device.cpu.cop0.regs[COP0_STATUS_REG as usize] &= !COP0_STATUS_ERL
@@ -158,7 +158,7 @@ pub fn eret(device: &mut device::Device, _opcode: u32) {
     device::exceptions::check_pending_interrupts(device)
 }
 
-pub fn execute_cp0(device: &mut device::Device, opcode: u32) {
+fn execute_cp0(device: &mut device::Device, opcode: u32) {
     device.cpu.cop0.instrs2[(opcode & 0x3F) as usize](device, opcode)
 }
 
@@ -174,7 +174,7 @@ pub fn reserved(device: &mut device::Device, _opcode: u32) {
     device::exceptions::reserved_exception(device, 0);
 }
 
-pub fn get_control_registers(device: &device::Device, index: u32) -> u64 {
+fn get_control_registers(device: &device::Device, index: u32) -> u64 {
     match index {
         COP0_COUNT_REG => device.cpu.cop0.regs[index as usize] >> 1,
         COP0_RANDOM_REG => set_random_register(device),
@@ -183,7 +183,7 @@ pub fn get_control_registers(device: &device::Device, index: u32) -> u64 {
     }
 }
 
-pub fn set_control_registers(device: &mut device::Device, index: u32, mut data: u64) {
+fn set_control_registers(device: &mut device::Device, index: u32, mut data: u64) {
     device.cpu.cop0.reg_latch = data;
     match index {
         COP0_COUNT_REG => {
@@ -230,7 +230,7 @@ pub fn set_control_registers(device: &mut device::Device, index: u32, mut data:
     device::exceptions::check_pending_interrupts(device);
 }
 
-pub fn compare_event(device: &mut device::Device) {
+fn compare_event(device: &mut device::Device) {
     device.cpu.cop0.regs[COP0_CAUSE_REG as usize] &= !COP0_CAUSE_EXCCODE_MASK;
     device.cpu.cop0.regs[COP0_CAUSE_REG as usize] |= COP0_CAUSE_IP7;
 
@@ -243,7 +243,7 @@ pub fn compare_event(device: &mut device::Device) {
     device::exceptions::check_pending_interrupts(device);
 }
 
-pub fn set_random_register(device: &device::Device) -> u64 {
+fn set_random_register(device: &device::Device) -> u64 {
     if device.cpu.cop0.regs[COP0_WIRED_REG as usize] > 31 {
         (u64::MAX - device.cpu.cop0.regs[COP0_COUNT_REG as usize]) & 0x3F
     } else {

src/device/cop1.rs

@@ -173,7 +173,7 @@ pub fn sdc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn mfc1(device: &mut device::Device, opcode: u32) {
+fn mfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -185,7 +185,7 @@ pub fn mfc1(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32(u32::from_ne_bytes(value.to_ne_bytes()) as i32);
 }
 
-pub fn dmfc1(device: &mut device::Device, opcode: u32) {
+fn dmfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -197,7 +197,7 @@ pub fn dmfc1(device: &mut device::Device, opcode: u32) {
         u64::from_ne_bytes(value.to_ne_bytes());
 }
 
-pub fn cfc1(device: &mut device::Device, opcode: u32) {
+fn cfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -209,7 +209,7 @@ pub fn cfc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dcfc1(device: &mut device::Device, opcode: u32) {
+fn dcfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -221,7 +221,7 @@ pub fn dcfc1(device: &mut device::Device, opcode: u32) {
     device::exceptions::floating_point_exception(device)
 }
 
-pub fn mtc1(device: &mut device::Device, opcode: u32) {
+fn mtc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -239,7 +239,7 @@ pub fn mtc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dmtc1(device: &mut device::Device, opcode: u32) {
+fn dmtc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -252,7 +252,7 @@ pub fn dmtc1(device: &mut device::Device, opcode: u32) {
     set_fpr_double(device, device::fpu_instructions::fs(opcode) as usize, value)
 }
 
-pub fn ctc1(device: &mut device::Device, opcode: u32) {
+fn ctc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -266,7 +266,7 @@ pub fn ctc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dctc1(device: &mut device::Device, opcode: u32) {
+fn dctc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -278,7 +278,7 @@ pub fn dctc1(device: &mut device::Device, opcode: u32) {
     device::exceptions::floating_point_exception(device)
 }
 
-pub fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -288,7 +288,7 @@ pub fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.b_instrs[((opcode >> 16) & 0x3) as usize](device, opcode)
 }
 
-pub fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -298,7 +298,7 @@ pub fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.s_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -308,7 +308,7 @@ pub fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.d_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -318,7 +318,7 @@ pub fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.l_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -328,7 +328,7 @@ pub fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.w_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn unusable(device: &mut device::Device, _opcode: u32) {
+fn unusable(device: &mut device::Device, _opcode: u32) {
     device::exceptions::cop_unusable_exception(device, device::cop0::COP0_CAUSE_CE1)
 }
 
@@ -342,7 +342,7 @@ pub fn reserved(device: &mut device::Device, opcode: u32) {
     device::exceptions::reserved_exception(device, device::cop0::COP0_CAUSE_CE1);
 }
 
-pub fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
+fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
     match index {
         0 => device.cpu.cop1.fcr0,
         31 => device.cpu.cop1.fcr31,
@@ -352,7 +352,7 @@ pub fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
     }
 }
 
-pub fn set_control_registers_fpu(device: &mut device::Device, index: u32, data: u32) {
+fn set_control_registers_fpu(device: &mut device::Device, index: u32, data: u32) {
     match index {
         0 => { // read only
         }

src/device/cop2.rs

@@ -5,7 +5,7 @@ pub struct Cop2 {
     pub reg_latch: u64,
 }
 
-pub fn mfc2(device: &mut device::Device, opcode: u32) {
+fn mfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -15,7 +15,7 @@ pub fn mfc2(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32((device.cpu.cop2.reg_latch) as u32 as i32)
 }
 
-pub fn dmfc2(device: &mut device::Device, opcode: u32) {
+fn dmfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -24,7 +24,7 @@ pub fn dmfc2(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] = device.cpu.cop2.reg_latch
 }
 
-pub fn cfc2(device: &mut device::Device, opcode: u32) {
+fn cfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -34,7 +34,7 @@ pub fn cfc2(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32((device.cpu.cop2.reg_latch) as u32 as i32)
 }
 
-pub fn mtc2(device: &mut device::Device, opcode: u32) {
+fn mtc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -43,7 +43,7 @@ pub fn mtc2(device: &mut device::Device, opcode: u32) {
     device.cpu.cop2.reg_latch = device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize]
 }
 
-pub fn dmtc2(device: &mut device::Device, opcode: u32) {
+fn dmtc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -52,7 +52,7 @@ pub fn dmtc2(device: &mut device::Device, opcode: u32) {
     device.cpu.cop2.reg_latch = device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize]
 }
 
-pub fn ctc2(device: &mut device::Device, opcode: u32) {
+fn ctc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -72,7 +72,7 @@ pub fn reserved(device: &mut device::Device, opcode: u32) {
     device::exceptions::reserved_exception(device, device::cop0::COP0_CAUSE_CE2);
 }
 
-pub fn unusable(device: &mut device::Device, _opcode: u32) {
+fn unusable(device: &mut device::Device, _opcode: u32) {
     device::exceptions::cop_unusable_exception(device, device::cop0::COP0_CAUSE_CE2)
 }
 

src/device/cpu_instructions.rs

@@ -12,7 +12,7 @@ pub fn rt(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn sa(opcode: u32) -> u32 {
+fn sa(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 
@@ -28,23 +28,23 @@ pub fn se16(value: i16) -> u64 {
     value as i64 as u64
 }
 
-pub fn se8(value: i8) -> u64 {
+fn se8(value: i8) -> u64 {
     value as i64 as u64
 }
 
-pub fn bshift<T: Into<u64>>(address: T) -> u64 {
+fn bshift<T: Into<u64>>(address: T) -> u64 {
     ((address.into() & 3) ^ 3) << 3
 }
 
-pub fn hshift<T: Into<u64>>(address: T) -> u64 {
+fn hshift<T: Into<u64>>(address: T) -> u64 {
     ((address.into() & 2) ^ 2) << 3
 }
 
-pub fn bits_below_mask<T: Into<u64>>(x: T) -> u64 {
+fn bits_below_mask<T: Into<u64>>(x: T) -> u64 {
     (1 << x.into()) - 1
 }
 
-pub fn bits_above_mask<T: Into<u64>>(x: T) -> u64 {
+fn bits_above_mask<T: Into<u64>>(x: T) -> u64 {
     !bits_below_mask(x)
 }
 
@@ -60,8 +60,8 @@ pub fn check_relative_idle_loop(device: &mut device::Device, opcode: u32) {
     }
 }
 
-pub fn check_absolute_idle_loop(device: &mut device::Device, opcode: u32) {
-    if (opcode & 0x3FFFFFF) as u64 == (device.cpu.pc_phys & 0x0FFFFFFF) >> 2
+fn check_absolute_idle_loop(device: &mut device::Device, target: u64) {
+    if device.cpu.pc == target
         && device.memory.fast_read[(device.cpu.pc_phys >> 16) as usize](
             device,
             device.cpu.pc_phys + 4,
@@ -76,10 +76,10 @@ pub fn j(device: &mut device::Device, opcode: u32) {
     if device::cpu::in_delay_slot_taken(device) {
         return;
     }
-    check_absolute_idle_loop(device, opcode);
+    let target = (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64;
+    check_absolute_idle_loop(device, target);
     device.cpu.branch_state.state = device::cpu::State::Take;
-    device.cpu.branch_state.pc =
-        (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64
+    device.cpu.branch_state.pc = target
 }
 
 pub fn jal(device: &mut device::Device, opcode: u32) {
@@ -89,10 +89,10 @@ pub fn jal(device: &mut device::Device, opcode: u32) {
         device.cpu.gpr[31] = device.cpu.pc + 8
     }
     if !device::cpu::in_delay_slot_taken(device) {
-        check_absolute_idle_loop(device, opcode);
+        let target = (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64;
+        check_absolute_idle_loop(device, target);
         device.cpu.branch_state.state = device::cpu::State::Take;
-        device.cpu.branch_state.pc =
-            (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64
+        device.cpu.branch_state.pc = target
     } else if !device::cpu::in_delay_slot(device) {
         device.cpu.branch_state.state = device::cpu::State::NotTaken;
     }
@@ -966,7 +966,6 @@ pub fn srav(device: &mut device::Device, opcode: u32) {
 
 pub fn jr(device: &mut device::Device, opcode: u32) {
     if !device::cpu::in_delay_slot_taken(device) {
-        check_relative_idle_loop(device, opcode);
         device.cpu.branch_state.state = device::cpu::State::Take;
         device.cpu.branch_state.pc = device.cpu.gpr[rs(opcode) as usize];
     } else if !device::cpu::in_delay_slot(device) {
@@ -978,7 +977,6 @@ pub fn jalr(device: &mut device::Device, opcode: u32) {
     let in_delay_slot_taken = device::cpu::in_delay_slot_taken(device);
 
     if !in_delay_slot_taken {
-        check_relative_idle_loop(device, opcode);
         device.cpu.branch_state.state = device::cpu::State::Take;
         device.cpu.branch_state.pc = device.cpu.gpr[rs(opcode) as usize];
     } else if !device::cpu::in_delay_slot(device) {

src/device/events.rs

@@ -12,6 +12,7 @@ pub enum EventType {
     SPDma,
     Compare,
     Vru,
+    PakSwitch,
     Count,
 }
 
@@ -56,7 +57,7 @@ pub fn trigger_event(device: &mut device::Device) {
     set_next_event(device);
 }
 
-pub fn set_next_event(device: &mut device::Device) {
+fn set_next_event(device: &mut device::Device) {
     device.cpu.next_event_count = u64::MAX;
     for (pos, i) in device.cpu.events.iter().enumerate() {
         if i.enabled && i.count < device.cpu.next_event_count {

src/device/exceptions.rs

@@ -133,7 +133,7 @@ pub fn tlb_miss_exception(
     exception_general(device, vector_offset)
 }
 
-pub fn exception_general(device: &mut device::Device, vector_offset: u32) {
+fn exception_general(device: &mut device::Device, vector_offset: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_EXL
         == 0
     {

src/device/fpu_instructions.rs

@@ -8,7 +8,7 @@ pub fn ft(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn fd(opcode: u32) -> u32 {
+fn fd(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 

src/device/mi.rs

@@ -75,7 +75,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
     device::exceptions::check_pending_interrupts(device)
 }
 
-pub fn update_init_mode(device: &mut device::Device, w: u32) {
+fn update_init_mode(device: &mut device::Device, w: u32) {
     device.mi.regs[MI_INIT_MODE_REG as usize] &= !MI_INIT_LENGTH_MASK;
     device.mi.regs[MI_INIT_MODE_REG as usize] |= w & MI_INIT_LENGTH_MASK;
 
@@ -103,7 +103,7 @@ pub fn update_init_mode(device: &mut device::Device, w: u32) {
     }
 }
 
-pub fn update_intr_mask(device: &mut device::Device, w: u32) {
+fn update_intr_mask(device: &mut device::Device, w: u32) {
     if w & MI_CLR_SP != 0 {
         device.mi.regs[MI_INTR_MASK_REG as usize] &= !MI_INTR_SP
     }

src/device/pi.rs

@@ -30,7 +30,7 @@ pub struct Pi {
     pub regs: [u32; PI_REGS_COUNT as usize],
 }
 
-pub struct PiHandler {
+struct PiHandler {
     read: fn(&mut device::Device, u32, u32, u32) -> u64,
     write: fn(&mut device::Device, u32, u32, u32) -> u64,
 }
@@ -49,7 +49,7 @@ pub fn read_regs(
     }
 }
 
-pub fn dma_read(device: &mut device::Device) {
+fn dma_read(device: &mut device::Device) {
     let handler = get_handler(device.pi.regs[PI_CART_ADDR_REG as usize]);
 
     let cart_addr = device.pi.regs[PI_CART_ADDR_REG as usize] & !1;
@@ -79,7 +79,7 @@ pub fn dma_read(device: &mut device::Device) {
     device.pi.regs[PI_STATUS_REG as usize] |= PI_STATUS_DMA_BUSY
 }
 
-pub fn dma_write(device: &mut device::Device) {
+fn dma_write(device: &mut device::Device) {
     let handler = get_handler(device.pi.regs[PI_CART_ADDR_REG as usize]);
 
     let cart_addr = device.pi.regs[PI_CART_ADDR_REG as usize] & !1;
@@ -112,7 +112,7 @@ pub fn dma_write(device: &mut device::Device) {
     device.pi.regs[PI_STATUS_REG as usize] |= PI_STATUS_DMA_BUSY
 }
 
-pub fn get_handler(address: u32) -> PiHandler {
+fn get_handler(address: u32) -> PiHandler {
     let mut handler = PiHandler {
         read: device::cart_rom::dma_read,
         write: device::cart_rom::dma_write,

src/device/pif.rs

@@ -15,6 +15,7 @@ pub struct PifChannel {
     pub rx_buf: Option<usize>,
     pub process: Option<fn(&mut device::Device, usize)>,
     pub pak_handler: Option<device::controller::PakHandler>,
+    pub change_pak: device::controller::PakType,
 }
 
 pub const PIF_RAM_SIZE: usize = 64;
@@ -72,7 +73,7 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
         device::si::SI_STATUS_DMA_BUSY | device::si::SI_STATUS_IO_BUSY
 }
 
-pub fn process_channel(device: &mut device::Device, channel: usize) -> usize {
+fn process_channel(device: &mut device::Device, channel: usize) -> usize {
     /* don't process channel if it has been disabled */
     if device.pif.channels[channel].tx.is_none() {
         return 0;
@@ -99,17 +100,18 @@ pub fn update_pif_ram(device: &mut device::Device) -> u64 {
     for k in 0..PIF_CHANNELS_COUNT {
         active_channels += process_channel(device, k)
     }
+
     (24000 + (active_channels * 30000)) as u64
 }
 
-pub fn disable_pif_channel(channel: &mut PifChannel) {
+fn disable_pif_channel(channel: &mut PifChannel) {
     channel.tx = None;
     channel.rx = None;
     channel.tx_buf = None;
     channel.rx_buf = None;
 }
 
-pub fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize) -> usize {
+fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize) -> usize {
     let tx = device.pif.ram[buf] & 0x3f;
     let rx = device.pif.ram[buf + 1] & 0x3f;
 
@@ -123,7 +125,7 @@ pub fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize
     (2 + tx + rx) as usize
 }
 
-pub fn setup_channels_format(device: &mut device::Device) {
+fn setup_channels_format(device: &mut device::Device) {
     let mut i: usize = 0;
     let mut k: usize = 0;
     while i < PIF_RAM_SIZE && k < PIF_CHANNELS_COUNT {
@@ -225,24 +227,30 @@ pub fn init(device: &mut device::Device) {
     device.pif.ram[0x27] = device.cart.cic_seed;
 
     let mempak_handler = device::controller::PakHandler {
-        read: device::mempak::read,
-        write: device::mempak::write,
+        read: device::controller::mempak::read,
+        write: device::controller::mempak::write,
+        pak_type: device::controller::PakType::MemPak,
     };
 
     for i in 0..4 {
-        if device.ui.config.input.controller_enabled[i] {
+        if device.netplay.is_none() {
+            if device.ui.config.input.controller_enabled[i] {
+                device.pif.channels[i].pak_handler = Some(mempak_handler);
+                device.pif.channels[i].process = Some(device::controller::process);
+            }
+        } else if device.netplay.as_ref().unwrap().player_data[i].reg_id != 0 {
             device.pif.channels[i].pak_handler = Some(mempak_handler);
             device.pif.channels[i].process = Some(device::controller::process);
         }
     }
     if device.ui.config.input.emulate_vru {
         device.pif.channels[3].pak_handler = None;
-        device.pif.channels[3].process = Some(device::vru::process);
+        device.pif.channels[3].process = Some(device::controller::vru::process);
     }
     device.pif.channels[4].process = Some(device::cart::process)
 }
 
-pub fn process_cic_challenge(device: &mut device::Device) {
+fn process_cic_challenge(device: &mut device::Device) {
     let mut challenge: [u8; 30] = [0; 30];
     let mut response: [u8; 30] = [0; 30];
 
@@ -263,7 +271,7 @@ pub fn process_cic_challenge(device: &mut device::Device) {
     }
 }
 
-pub fn n64_cic_nus_6105(chl: [u8; 30], rsp: &mut [u8; 30], len: usize) {
+fn n64_cic_nus_6105(chl: [u8; 30], rsp: &mut [u8; 30], len: usize) {
     let lut0: [u8; 0x10] = [
         0x4, 0x7, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1, 0xC, 0xF, 0x8, 0xF, 0x6, 0x3, 0x6, 0x9,
     ];

src/device/rdp.rs

@@ -91,7 +91,7 @@ pub fn write_regs_dpc(device: &mut device::Device, address: u64, value: u32, mas
     }
 }
 
-pub fn run_rdp(device: &mut device::Device) {
+fn run_rdp(device: &mut device::Device) {
     let timer = ui::video::process_rdp_list();
 
     if timer != 0 {
@@ -120,7 +120,7 @@ pub fn write_regs_dps(device: &mut device::Device, address: u64, value: u32, mas
     )
 }
 
-pub fn update_dpc_status(device: &mut device::Device, w: u32) {
+fn update_dpc_status(device: &mut device::Device, w: u32) {
     /* clear / set xbus_dmem_dma */
     if w & DPC_CLR_XBUS_DMEM_DMA != 0 {
         device.rdp.regs_dpc[DPC_STATUS_REG as usize] &= !DPC_STATUS_XBUS_DMEM_DMA
@@ -173,8 +173,6 @@ pub fn init(device: &mut device::Device) {
         DPC_STATUS_START_GCLK | DPC_STATUS_PIPE_BUSY | DPC_STATUS_CBUF_READY;
 }
 
-pub fn rdp_interrupt_event(device: &mut device::Device) {
-    ui::video::full_sync();
-
+fn rdp_interrupt_event(device: &mut device::Device) {
     device::mi::set_rcp_interrupt(device, device::mi::MI_INTR_DP)
 }

src/device/rsp_interface.rs

@@ -129,7 +129,7 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, _mask: u
     // SH/SB are broken: They overwrite the whole 32 bit, filling everything that isn't written with zeroes
 }
 
-pub fn do_dma(device: &mut device::Device, dma: RspDma) {
+fn do_dma(device: &mut device::Device, dma: RspDma) {
     let l = dma.length;
 
     let length = ((l & 0xfff) | 7) + 1;
@@ -205,7 +205,7 @@ pub fn do_dma(device: &mut device::Device, dma: RspDma) {
     );
 }
 
-pub fn fifo_push(device: &mut device::Device, dir: DmaDir) {
+fn fifo_push(device: &mut device::Device, dir: DmaDir) {
     if device.rsp.regs[SP_DMA_FULL_REG as usize] != 0 {
         panic!("RSP DMA already full")
     }
@@ -237,7 +237,7 @@ pub fn fifo_push(device: &mut device::Device, dir: DmaDir) {
     }
 }
 
-pub fn fifo_pop(device: &mut device::Device) {
+fn fifo_pop(device: &mut device::Device) {
     if device.rsp.regs[SP_DMA_FULL_REG as usize] != 0 {
         device.rsp.fifo[0].dir = device.rsp.fifo[1].dir;
         device.rsp.fifo[0].length = device.rsp.fifo[1].length;
@@ -312,7 +312,7 @@ pub fn write_regs2(device: &mut device::Device, address: u64, value: u32, mask:
     }
 }
 
-pub fn update_sp_status(device: &mut device::Device, w: u32) {
+fn update_sp_status(device: &mut device::Device, w: u32) {
     let was_halted = device.rsp.regs[SP_STATUS_REG as usize] & SP_STATUS_HALT != 0;
 
     /* clear / set halt */
@@ -426,7 +426,7 @@ pub fn update_sp_status(device: &mut device::Device, w: u32) {
     }
 }
 
-pub fn do_task(device: &mut device::Device) {
+fn do_task(device: &mut device::Device) {
     let timer = device::rsp_cpu::run(device);
 
     device::events::create_event(
@@ -437,7 +437,7 @@ pub fn do_task(device: &mut device::Device) {
     )
 }
 
-pub fn rsp_event(device: &mut device::Device) {
+fn rsp_event(device: &mut device::Device) {
     if device.rsp.cpu.broken {
         device.rsp.regs[SP_STATUS_REG as usize] |= SP_STATUS_HALT | SP_STATUS_BROKE;
 

src/device/rsp_su_instructions.rs

@@ -8,45 +8,45 @@ use crate::device;
 #[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
-pub fn rd(opcode: u32) -> u32 {
+fn rd(opcode: u32) -> u32 {
     (opcode >> 11) & 0x1F
 }
 
-pub fn rs(opcode: u32) -> u32 {
+fn rs(opcode: u32) -> u32 {
     (opcode >> 21) & 0x1F
 }
 
-pub fn rt(opcode: u32) -> u32 {
+fn rt(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn sa(opcode: u32) -> u32 {
+fn sa(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 
-pub fn imm(opcode: u32) -> u16 {
+fn imm(opcode: u32) -> u16 {
     opcode as u16
 }
 
-pub fn se16(value: i16) -> u32 {
+fn se16(value: i16) -> u32 {
     value as i32 as u32
 }
 
-pub fn voffset(opcode: u32) -> u8 {
+fn voffset(opcode: u32) -> u8 {
     (opcode & 0x7F) as u8
 }
 
-pub fn velement(opcode: u32) -> u8 {
+fn velement(opcode: u32) -> u8 {
     ((opcode >> 7) & 0xF) as u8
 }
 
-pub fn sign_extend_7bit_offset(offset: u8, shift_amount: u32) -> u32 {
+fn sign_extend_7bit_offset(offset: u8, shift_amount: u32) -> u32 {
     let soffset = (((offset << 1) & 0x80) | offset) as i8;
 
     (((soffset) as i32) as u32) << shift_amount
 }
 
-pub fn modify_vpr8(vpr: &mut __m128i, element: u8, value: u8) {
+fn modify_vpr8(vpr: &mut __m128i, element: u8, value: u8) {
     unsafe {
         *vpr = match element & 15 {
             0 => _mm_insert_epi8(*vpr, value as i32, 15),
@@ -70,7 +70,7 @@ pub fn modify_vpr8(vpr: &mut __m128i, element: u8, value: u8) {
     }
 }
 
-pub fn get_vpr8(vpr: __m128i, element: u8) -> u8 {
+fn get_vpr8(vpr: __m128i, element: u8) -> u8 {
     unsafe {
         match element & 15 {
             0 => _mm_extract_epi8(vpr, 15) as u8,
@@ -126,7 +126,7 @@ pub fn get_vpr16(vpr: __m128i, element: u8) -> u16 {
     }
 }
 
-pub fn modify_vpr32(vpr: &mut __m128i, element: u8, value: u32) {
+fn modify_vpr32(vpr: &mut __m128i, element: u8, value: u32) {
     unsafe {
         *vpr = match element & 3 {
             0 => _mm_insert_epi32(*vpr, value as i32, 3),
@@ -138,7 +138,7 @@ pub fn modify_vpr32(vpr: &mut __m128i, element: u8, value: u32) {
     }
 }
 
-pub fn get_vpr32(vpr: __m128i, element: u8) -> u32 {
+fn get_vpr32(vpr: __m128i, element: u8) -> u32 {
     unsafe {
         match element & 3 {
             0 => _mm_extract_epi32(vpr, 3) as u32,
@@ -150,7 +150,7 @@ pub fn get_vpr32(vpr: __m128i, element: u8) -> u32 {
     }
 }
 
-pub fn modify_vpr64(vpr: &mut __m128i, element: u8, value: u64) {
+fn modify_vpr64(vpr: &mut __m128i, element: u8, value: u64) {
     unsafe {
         *vpr = match element & 1 {
             0 => _mm_insert_epi64(*vpr, value as i64, 1),
@@ -160,7 +160,7 @@ pub fn modify_vpr64(vpr: &mut __m128i, element: u8, value: u64) {
     }
 }
 
-pub fn get_vpr64(vpr: __m128i, element: u8) -> u64 {
+fn get_vpr64(vpr: __m128i, element: u8) -> u64 {
     unsafe {
         match element & 1 {
             0 => _mm_extract_epi64(vpr, 1) as u64,
@@ -170,11 +170,11 @@ pub fn get_vpr64(vpr: __m128i, element: u8) -> u64 {
     }
 }
 
-pub fn modify_vpr128(vpr: &mut __m128i, value: u128) {
+fn modify_vpr128(vpr: &mut __m128i, value: u128) {
     unsafe { *vpr = std::mem::transmute::<u128, __m128i>(value) }
 }
 
-pub fn get_vpr128(vpr: __m128i) -> u128 {
+fn get_vpr128(vpr: __m128i) -> u128 {
     unsafe { std::mem::transmute::<__m128i, u128>(vpr) }
 }
 

src/device/rsp_vu_instructions.rs

@@ -9,41 +9,41 @@ use crate::device::rsp_su_instructions::{get_vpr16, modify_vpr16};
 #[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
-pub fn vt(opcode: u32) -> u32 {
+fn vt(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn ve(opcode: u32) -> u32 {
+fn ve(opcode: u32) -> u32 {
     (opcode >> 21) & 0xF
 }
 
-pub fn vs(opcode: u32) -> u32 {
+fn vs(opcode: u32) -> u32 {
     (opcode >> 11) & 0x1F
 }
 
-pub fn vd(opcode: u32) -> u32 {
+fn vd(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 
-pub fn de(opcode: u32) -> u32 {
+fn de(opcode: u32) -> u32 {
     (opcode >> 11) & 0x7
 }
 
-pub fn clamp_signed_32(value: i32) -> i16 {
+fn clamp_signed_32(value: i32) -> i16 {
     value.clamp(-32768, 32767) as i16
 }
 
-pub fn clamp_signed_64(value: i64) -> i16 {
+fn clamp_signed_64(value: i64) -> i16 {
     value.clamp(-32768, 32767) as i16
 }
 
-pub fn s_clip(x: i64, bits: u32) -> i64 {
+fn s_clip(x: i64, bits: u32) -> i64 {
     let b = 1_u64 << (bits - 1);
     let m = b * 2 - 1;
     ((((x as u64) & m) ^ b).wrapping_sub(b)) as i64
 }
 
-pub fn vte(device: &device::Device, vt: u32, index: usize) -> __m128i {
+fn vte(device: &device::Device, vt: u32, index: usize) -> __m128i {
     unsafe {
         _mm_shuffle_epi8(
             device.rsp.cpu.vpr[vt as usize],

src/device/si.rs

@@ -34,7 +34,7 @@ pub fn read_regs(
     device.si.regs[((address & 0xFFFF) >> 2) as usize]
 }
 
-pub fn dma_read(device: &mut device::Device) {
+fn dma_read(device: &mut device::Device) {
     device.si.dma_dir = DmaDir::Read;
 
     let duration = device::pif::update_pif_ram(device);
@@ -49,7 +49,7 @@ pub fn dma_read(device: &mut device::Device) {
     )
 }
 
-pub fn dma_write(device: &mut device::Device) {
+fn dma_write(device: &mut device::Device) {
     device.si.dma_dir = DmaDir::Write;
 
     copy_pif_rdram(device);
@@ -78,7 +78,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
 }
 
 //rdram is in native endian format, and pif memory is in big endian format
-pub fn copy_pif_rdram(device: &mut device::Device) {
+fn copy_pif_rdram(device: &mut device::Device) {
     let dram_addr = device.si.regs[SI_DRAM_ADDR_REG as usize] as usize & device::rdram::RDRAM_MASK;
     if device.si.dma_dir == DmaDir::Write {
         let mut i = 0;

src/device/sram.rs

@@ -2,8 +2,8 @@ use crate::device;
 use crate::ui;
 
 const SRAM_MASK: usize = 0xFFFF;
-const SRAM_SIZE: usize = 0x8000;
-const FLASHRAM_SIZE: usize = 0x20000;
+pub const SRAM_SIZE: usize = 0x8000;
+pub const FLASHRAM_SIZE: usize = 0x20000;
 pub const FLASHRAM_TYPE_ID: u32 = 0x11118001;
 pub const MX29L1100_ID: u32 = 0x00c2001e;
 const MX29L0000_ID: u32 = 0x00c20000;
@@ -27,19 +27,19 @@ pub struct Flashram {
     pub silicon_id: [u32; 2],
 }
 
-pub fn format_sram(device: &mut device::Device) {
+fn format_sram(device: &mut device::Device) {
     if device.ui.saves.sram.0.len() < SRAM_SIZE {
         device.ui.saves.sram.0.resize(SRAM_SIZE, 0xFF)
     }
 }
 
-pub fn format_flash(device: &mut device::Device) {
+fn format_flash(device: &mut device::Device) {
     if device.ui.saves.flash.0.len() < FLASHRAM_SIZE {
         device.ui.saves.flash.0.resize(FLASHRAM_SIZE, 0xFF)
     }
 }
 
-pub fn read_mem_sram(device: &mut device::Device, address: u64) -> u32 {
+fn read_mem_sram(device: &mut device::Device, address: u64) -> u32 {
     let masked_address = address as usize & SRAM_MASK;
 
     format_sram(device);
@@ -51,7 +51,7 @@ pub fn read_mem_sram(device: &mut device::Device, address: u64) -> u32 {
     )
 }
 
-pub fn read_mem_flash(device: &device::Device, address: u64) -> u32 {
+fn read_mem_flash(device: &device::Device, address: u64) -> u32 {
     if (address & 0x1ffff) == 0x00000 && device.flashram.mode == FlashramMode::Status {
         /* read Status register */
         device.flashram.status
@@ -80,7 +80,7 @@ pub fn read_mem(
     }
 }
 
-pub fn write_mem_sram(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+fn write_mem_sram(device: &mut device::Device, address: u64, value: u32, mask: u32) {
     let masked_address = address as usize & SRAM_MASK;
 
     format_sram(device);
@@ -96,7 +96,7 @@ pub fn write_mem_sram(device: &mut device::Device, address: u64, value: u32, mas
     device.ui.saves.sram.1 = true
 }
 
-pub fn write_mem_flash(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+fn write_mem_flash(device: &mut device::Device, address: u64, value: u32, mask: u32) {
     if (address & 0x1ffff) == 0x00000 && device.flashram.mode == FlashramMode::Status {
         /* clear/set Status register */
         device.flashram.status = (value & mask) & 0xff;
@@ -128,12 +128,7 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
     );
 }
 
-pub fn dma_read_sram(
-    device: &mut device::Device,
-    mut cart_addr: u32,
-    mut dram_addr: u32,
-    length: u32,
-) {
+fn dma_read_sram(device: &mut device::Device, mut cart_addr: u32, mut dram_addr: u32, length: u32) {
     dram_addr &= device::rdram::RDRAM_MASK as u32;
     cart_addr &= SRAM_MASK as u32;
     let mut i = dram_addr;
@@ -150,7 +145,7 @@ pub fn dma_read_sram(
     device.ui.saves.sram.1 = true
 }
 
-pub fn dma_read_flash(device: &mut device::Device, cart_addr: u32, dram_addr: u32, length: u32) {
+fn dma_read_flash(device: &mut device::Device, cart_addr: u32, dram_addr: u32, length: u32) {
     format_flash(device);
 
     if (cart_addr & 0x1ffff) == 0x00000
@@ -178,7 +173,7 @@ pub fn dma_read(device: &mut device::Device, cart_addr: u32, dram_addr: u32, len
     device::pi::calculate_cycles(device, 2, length)
 }
 
-pub fn dma_write_sram(
+fn dma_write_sram(
     device: &mut device::Device,
     mut cart_addr: u32,
     mut dram_addr: u32,
@@ -198,7 +193,7 @@ pub fn dma_write_sram(
     }
 }
 
-pub fn dma_write_flash(
+fn dma_write_flash(
     device: &mut device::Device,
     mut cart_addr: u32,
     mut dram_addr: u32,
@@ -251,7 +246,7 @@ pub fn dma_write(device: &mut device::Device, cart_addr: u32, dram_addr: u32, le
     device::pi::calculate_cycles(device, 2, length)
 }
 
-pub fn flashram_command(device: &mut device::Device, command: u32) {
+fn flashram_command(device: &mut device::Device, command: u32) {
     match command & 0xff000000 {
         0x3c000000 => {
             /* set chip erase mode */

src/device/tlb.rs

@@ -145,7 +145,7 @@ pub fn probe(device: &mut device::Device) {
     }
 }
 
-pub fn tlb_unmap(device: &mut device::Device, index: u64) {
+fn tlb_unmap(device: &mut device::Device, index: u64) {
     let e = &mut device.cpu.cop0.tlb_entries[index as usize];
 
     if e.v_even != 0 {
@@ -183,7 +183,7 @@ pub fn tlb_unmap(device: &mut device::Device, index: u64) {
     }
 }
 
-pub fn tlb_map(device: &mut device::Device, index: u64) {
+fn tlb_map(device: &mut device::Device, index: u64) {
     let e = &mut device.cpu.cop0.tlb_entries[index as usize];
 
     if e.v_even != 0

src/device/vi.rs

@@ -1,4 +1,5 @@
 use crate::device;
+use crate::netplay;
 use crate::ui;
 use governor::clock::Clock;
 
@@ -32,7 +33,7 @@ pub struct Vi {
 
 const LIMIT_BUFFER: u64 = 3;
 
-pub fn set_expected_refresh_rate(device: &mut device::Device) {
+fn set_expected_refresh_rate(device: &mut device::Device) {
     let expected_refresh_rate = device.vi.clock as f64
         / (device.vi.regs[VI_V_SYNC_REG as usize] + 1) as f64
         / ((device.vi.regs[VI_H_SYNC_REG as usize] & 0xFFF) + 1) as f64
@@ -48,7 +49,7 @@ pub fn set_expected_refresh_rate(device: &mut device::Device) {
     device.vi.limiter = Some(governor::RateLimiter::direct(quota))
 }
 
-pub fn set_vertical_interrupt(device: &mut device::Device) {
+fn set_vertical_interrupt(device: &mut device::Device) {
     if device::events::get_event(device, device::events::EventType::VI).is_none() {
         device::events::create_event(
             device,
@@ -59,7 +60,7 @@ pub fn set_vertical_interrupt(device: &mut device::Device) {
     }
 }
 
-pub fn set_current_line(device: &mut device::Device) {
+fn set_current_line(device: &mut device::Device) {
     let delay = device.vi.delay;
     let next_vi = device::events::get_event(device, device::events::EventType::VI);
     if next_vi.is_some() {
@@ -115,7 +116,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
     ui::video::set_register(reg as u32, device.vi.regs[reg as usize])
 }
 
-pub fn vertical_interrupt_event(device: &mut device::Device) {
+fn vertical_interrupt_event(device: &mut device::Device) {
     device.cpu.running = ui::video::update_screen();
 
     /*
@@ -124,8 +125,14 @@ pub fn vertical_interrupt_event(device: &mut device::Device) {
         }
     */
 
+    let mut enable_speed_limiter = true;
+    if device.netplay.is_some() {
+        netplay::send_sync_check(device);
+        enable_speed_limiter = !device.netplay.as_ref().unwrap().fast_forward;
+    }
+
     device.vi.vi_counter += 1;
-    if device.vi.vi_counter % LIMIT_BUFFER == 0 {
+    if device.vi.vi_counter % LIMIT_BUFFER == 0 && enable_speed_limiter {
         speed_limiter(device);
     }
 
@@ -162,7 +169,7 @@ pub fn init(device: &mut device::Device) {
     */
 }
 
-pub fn speed_limiter(device: &device::Device) {
+fn speed_limiter(device: &device::Device) {
     let result = device.vi.limiter.as_ref().unwrap().check();
     if result.is_err() {
         let outcome = result.unwrap_err();

src/main.rs

@@ -1,6 +1,10 @@
+#![deny(warnings)]
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
 
 mod device;
+mod netplay;
 mod ui;
 use clap::Parser;
 
@@ -18,6 +22,12 @@ struct Args {
         help = "Create a new input profile (keyboard/gamepad mappings)."
     )]
     configure_input_profile: Option<String>,
+    #[arg(
+        short,
+        long,
+        help = "Use DirectInput when configuring a new input profile."
+    )]
+    use_dinput: bool,
     #[arg(
         short,
         long,
@@ -53,7 +63,8 @@ struct Args {
     clear_input_bindings: bool,
 }
 
-fn main() {
+#[tokio::main]
+async fn main() {
     let exe_path = std::env::current_exe().unwrap();
     let portable_dir = exe_path.parent();
     let portable = portable_dir.unwrap().join("portable.txt").exists();
@@ -139,13 +150,19 @@ fn main() {
             ui::input::configure_input_profile(
                 &mut device.ui,
                 args.configure_input_profile.unwrap(),
+                args.use_dinput,
             );
             return;
         }
 
         if args.game.is_some() {
             let file_path = std::path::Path::new(args.game.as_ref().unwrap());
-            device::run_game(file_path, data_dir, &mut device, args.fullscreen);
+            let rom_contents = device::get_rom_contents(file_path);
+            if rom_contents.is_empty() {
+                println!("Could not read rom file");
+                return;
+            }
+            device::run_game(rom_contents, data_dir, &mut device, args.fullscreen);
         }
     } else {
         let options = eframe::NativeOptions {

src/netplay.rs

@@ -0,0 +1,317 @@
+use crate::device;
+use crate::ui;
+use eframe::egui;
+use std::io::{Read, Write};
+//UDP packet formats
+const UDP_SEND_KEY_INFO: u8 = 0;
+const UDP_RECEIVE_KEY_INFO: u8 = 1;
+const UDP_REQUEST_KEY_INFO: u8 = 2;
+const UDP_RECEIVE_KEY_INFO_GRATUITOUS: u8 = 3;
+const UDP_SYNC_DATA: u8 = 4;
+
+//TCP packet formats
+const TCP_SEND_SAVE: u8 = 1;
+const TCP_RECEIVE_SAVE: u8 = 2;
+//const TCP_SEND_SETTINGS: u8 = 3;
+//const TCP_RECEIVE_SETTINGS: u8 = 4;
+const TCP_REGISTER_PLAYER: u8 = 5;
+const TCP_GET_REGISTRATION: u8 = 6;
+const TCP_DISCONNECT_NOTICE: u8 = 7;
+
+pub struct Netplay {
+    udp_socket: std::net::UdpSocket,
+    tcp_stream: std::net::TcpStream,
+    pub player_number: u8,
+    pub player_data: [PlayerData; 4],
+    vi_counter: u32,
+    status: u8,
+    buffer_target: u8,
+    pub fast_forward: bool,
+    pub error_notifier: tokio::sync::mpsc::Sender<String>,
+    pub gui_ctx: egui::Context,
+}
+
+pub struct PlayerData {
+    lag: u8,
+    count: u32,
+    pub reg_id: u32,
+    input_events: std::collections::HashMap<u32, InputEvent>,
+}
+
+struct InputEvent {
+    input: u32,
+    plugin: u8,
+}
+
+fn send_error(netplay: &mut Netplay, error: String) {
+    netplay.error_notifier.try_send(error).unwrap();
+
+    netplay.gui_ctx.request_repaint(); // this is so the window pops up right away
+}
+
+pub fn send_save(netplay: &mut Netplay, save_type: &str, save_data: &[u8], size: usize) {
+    let mut request: Vec<u8> = [TCP_SEND_SAVE].to_vec();
+    request.extend_from_slice(save_type.as_bytes());
+    request.push(0); // null terminate string
+    request.extend_from_slice(&(size as u32).to_be_bytes());
+
+    let mut send_data = save_data.to_owned();
+    send_data.resize(size, 0); // pad with zeros if needed
+    request.extend(send_data);
+    netplay.tcp_stream.write_all(&request).unwrap();
+}
+
+pub fn receive_save(netplay: &mut Netplay, save_type: &str, save_data: &mut Vec<u8>, size: usize) {
+    let mut request: Vec<u8> = [TCP_RECEIVE_SAVE].to_vec();
+    request.extend_from_slice(save_type.as_bytes());
+    request.push(0); // null terminate string
+    netplay.tcp_stream.write_all(&request).unwrap();
+
+    let mut response: Vec<u8> = vec![0; size];
+    netplay.tcp_stream.read_exact(&mut response).unwrap();
+    *save_data = response;
+}
+
+pub fn send_sync_check(device: &mut device::Device) {
+    let netplay = device.netplay.as_mut().unwrap();
+    if netplay.vi_counter % 600 == 0 {
+        let mut request: Vec<u8> = [UDP_SYNC_DATA].to_vec();
+        request.extend_from_slice(&(netplay.vi_counter).to_be_bytes());
+
+        for i in 0..device::cop0::COP0_REGS_COUNT as usize {
+            request.extend_from_slice(&(device.cpu.cop0.regs[i] as u32).to_be_bytes());
+        }
+
+        netplay.udp_socket.send(&request).unwrap();
+    }
+    netplay.vi_counter = netplay.vi_counter.wrapping_add(1);
+}
+
+pub fn send_input(netplay: &Netplay, input: (u32, bool)) {
+    let mut request: Vec<u8> = [UDP_SEND_KEY_INFO].to_vec();
+    request.push(netplay.player_number);
+    request.extend_from_slice(
+        &(netplay.player_data[netplay.player_number as usize].count).to_be_bytes(),
+    );
+    request.extend_from_slice(&(input.0).to_be_bytes());
+    request.push(input.1 as u8);
+    netplay.udp_socket.send(&request).unwrap();
+}
+
+pub fn get_input(device: &mut device::Device, channel: usize) -> (u32, bool) {
+    let netplay = device.netplay.as_mut().unwrap();
+    let mut input = None;
+
+    let timeout = std::time::Instant::now() + std::time::Duration::from_secs(10);
+    let mut request_timer = std::time::Instant::now() + std::time::Duration::from_millis(5);
+    request_input(netplay, channel);
+    while input.is_none() {
+        if std::time::Instant::now() > request_timer {
+            // sends a request packet every 5ms
+            request_input(netplay, channel);
+            request_timer = std::time::Instant::now() + std::time::Duration::from_millis(5);
+        }
+        process_incoming(netplay);
+        input = netplay.player_data[channel]
+            .input_events
+            .remove(&netplay.player_data[channel].count);
+
+        if std::time::Instant::now() > timeout {
+            send_error(
+                netplay,
+                "Timed out waiting for input. Lost connection to server".to_string(),
+            );
+            input = Some(InputEvent {
+                input: 0,
+                plugin: 0,
+            });
+            device.cpu.running = false;
+        }
+    }
+
+    netplay.fast_forward = netplay.player_data[channel].lag > 0
+        && netplay.player_data[channel].input_events.len() as u8 > netplay.buffer_target;
+
+    netplay.player_data[channel].count = netplay.player_data[channel].count.wrapping_add(1);
+    (
+        input.as_ref().unwrap().input,
+        input.as_ref().unwrap().plugin != 0,
+    )
+}
+
+fn request_input(netplay: &Netplay, channel: usize) {
+    let mut request: Vec<u8> = [UDP_REQUEST_KEY_INFO].to_vec();
+    request.push(channel as u8); //The player we need input for
+    request.extend_from_slice(
+        &(netplay.player_data[netplay.player_number as usize].reg_id).to_be_bytes(),
+    );
+    request.extend_from_slice(&(netplay.player_data[channel].count).to_be_bytes());
+    request.push(0); //spectator mode
+    request.push(netplay.player_data[channel].input_events.len() as u8);
+    netplay.udp_socket.send(&request).unwrap();
+}
+
+fn process_incoming(netplay: &mut Netplay) {
+    let mut buf: [u8; 1024] = [0; 1024];
+    while let Ok(_incoming) = netplay.udp_socket.recv(&mut buf) {
+        match buf[0] {
+            UDP_RECEIVE_KEY_INFO | UDP_RECEIVE_KEY_INFO_GRATUITOUS => {
+                let player = buf[1] as usize;
+                //current_status is a status update from the server
+                //it will let us know if another player has disconnected, or the games have desynced
+                let current_status = buf[2];
+                if buf[0] == UDP_RECEIVE_KEY_INFO {
+                    netplay.player_data[player].lag = buf[3];
+                }
+                if current_status != netplay.status {
+                    if ((current_status & 0x1) ^ (netplay.status & 0x1)) != 0 {
+                        send_error(
+                            netplay,
+                            format!("Players have desynced at VI {}", netplay.vi_counter),
+                        );
+                    }
+                    for dis in 1..5 {
+                        if ((current_status & (0x1 << dis)) ^ (netplay.status & (0x1 << dis))) != 0
+                        {
+                            send_error(netplay, format!("Player {} has disconnected", dis));
+                        }
+                    }
+                    netplay.status = current_status;
+                }
+
+                let mut buffer_offset = 5;
+                for _i in 0..buf[4] {
+                    let count = u32::from_be_bytes(
+                        buf[buffer_offset..buffer_offset + 4].try_into().unwrap(),
+                    );
+                    buffer_offset += 4;
+
+                    if (count.wrapping_sub(netplay.player_data[player].count)) > (u32::MAX / 2) {
+                        //event doesn't need to be recorded
+                        buffer_offset += 5;
+                        continue;
+                    }
+
+                    let input = u32::from_be_bytes(
+                        buf[buffer_offset..buffer_offset + 4].try_into().unwrap(),
+                    );
+                    buffer_offset += 4;
+                    let plugin = buf[buffer_offset];
+                    buffer_offset += 1;
+                    let input_event = InputEvent { input, plugin };
+                    netplay.player_data[player]
+                        .input_events
+                        .insert(count, input_event);
+                }
+            }
+            _ => {
+                panic! {"unknown UDP packet"}
+            }
+        }
+    }
+}
+
+pub fn init(
+    mut peer_addr: std::net::SocketAddr,
+    session: ui::gui::gui_netplay::NetplayRoom,
+    player_number: u8,
+    error_notifier: tokio::sync::mpsc::Sender<String>,
+    gui_ctx: egui::Context,
+) -> Netplay {
+    peer_addr.set_port(session.port.unwrap() as u16);
+    let udp_socket = if peer_addr.is_ipv4() {
+        std::net::UdpSocket::bind((std::net::Ipv4Addr::UNSPECIFIED, 0))
+            .expect("couldn't bind to address")
+    } else {
+        std::net::UdpSocket::bind((std::net::Ipv6Addr::UNSPECIFIED, 0))
+            .expect("couldn't bind to address")
+    };
+    udp_socket.connect(peer_addr).unwrap();
+    udp_socket.set_nonblocking(true).unwrap();
+
+    let mut stream = std::net::TcpStream::connect(peer_addr).unwrap();
+
+    let regid = (player_number + 1) as u32;
+    let mut request: [u8; 8] = [
+        TCP_REGISTER_PLAYER,
+        player_number,
+        0, //plugin/pak
+        0, //rawdata
+        0, //regid (u32)
+        0, //regid (u32)
+        0, //regid (u32)
+        0, //regid (u32)
+    ];
+
+    request[4..8].copy_from_slice(&regid.to_be_bytes());
+    stream.write_all(&request).unwrap();
+
+    let mut response: [u8; 2] = [0, 0];
+    stream.read_exact(&mut response).unwrap();
+    if response[0] != 1 {
+        panic!("Failed to register player");
+    }
+    let buffer_target = response[1];
+
+    let request: [u8; 1] = [TCP_GET_REGISTRATION];
+    stream.write_all(&request).unwrap();
+    let mut response: [u8; 24] = [0; 24];
+    stream.read_exact(&mut response).unwrap();
+
+    let mut reg_id: [u32; 4] = [0; 4];
+    for i in 0..4 {
+        // reg_id of 0 means no player connected
+        reg_id[i] = u32::from_be_bytes(response[(i * 6)..(i * 6) + 4].try_into().unwrap());
+    }
+    Netplay {
+        udp_socket,
+        tcp_stream: stream,
+        player_number,
+        vi_counter: 0,
+        status: 0,
+        buffer_target,
+        fast_forward: false,
+        error_notifier,
+        gui_ctx,
+        player_data: [
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[0],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[1],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[2],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[3],
+                input_events: std::collections::HashMap::new(),
+            },
+        ],
+    }
+}
+
+pub fn close(device: &mut device::Device) {
+    let netplay = device.netplay.as_mut().unwrap();
+    let regid = (netplay.player_number + 1) as u32;
+    let mut request: [u8; 5] = [TCP_DISCONNECT_NOTICE, 0, 0, 0, 0];
+    request[1..5].copy_from_slice(&regid.to_be_bytes());
+
+    netplay.tcp_stream.write_all(&request).unwrap();
+    netplay.tcp_stream.flush().unwrap();
+    netplay
+        .tcp_stream
+        .shutdown(std::net::Shutdown::Both)
+        .unwrap();
+}

src/ui.rs

@@ -18,6 +18,7 @@ pub struct Ui {
     pub sdl_context: Option<sdl2::Sdl>,
     pub video_subsystem: Option<sdl2::VideoSubsystem>,
     pub audio_subsystem: Option<sdl2::AudioSubsystem>,
+    pub pak_audio: Option<audio::PakAudio>,
     pub joystick_subsystem: Option<sdl2::JoystickSubsystem>,
     #[allow(dead_code)]
     pub controller_subsystem: Option<sdl2::GameControllerSubsystem>,
@@ -59,18 +60,22 @@ impl Ui {
                 input::Controllers {
                     game_controller: None,
                     joystick: None,
+                    rumble: false,
                 },
                 input::Controllers {
                     game_controller: None,
                     joystick: None,
+                    rumble: false,
                 },
                 input::Controllers {
                     game_controller: None,
                     joystick: None,
+                    rumble: false,
                 },
                 input::Controllers {
                     game_controller: None,
                     joystick: None,
+                    rumble: false,
                 },
             ],
             config_file_path,
@@ -99,6 +104,7 @@ impl Ui {
             controller_subsystem: Some(controller_subsystem),
             window: None,
             audio_device: None,
+            pak_audio: None,
         }
     }
 }

src/ui/audio.rs

@@ -1,6 +1,11 @@
 use crate::device;
 use crate::ui;
 
+pub struct PakAudio {
+    mempak: Vec<u8>,
+    rumblepak: Vec<u8>,
+}
+
 pub fn init(ui: &mut ui::Ui, frequency: u64) {
     let desired_spec = sdl2::audio::AudioSpecDesired {
         freq: Some(frequency as i32),
@@ -14,7 +19,53 @@ pub fn init(ui: &mut ui::Ui, frequency: u64) {
             .open_queue::<i16, _>(None, &desired_spec)
             .unwrap(),
     );
-    ui.audio_device.as_ref().unwrap().resume();
+    let audio_device = ui.audio_device.as_ref().unwrap();
+    audio_device.resume();
+
+    let mempak_audio = Box::new(sdl2::audio::AudioSpecWAV::load_wav_rw(
+        &mut sdl2::rwops::RWops::from_bytes(include_bytes!("../../data/mempak.wav"))
+            .expect("Could not mempak WAV file"),
+    ))
+    .expect("Could not load mempak WAV file");
+    let rumblepak_audio = Box::new(
+        sdl2::audio::AudioSpecWAV::load_wav_rw(
+            &mut sdl2::rwops::RWops::from_bytes(include_bytes!("../../data/rumblepak.wav"))
+                .expect("Could not load rumblepak WAV file"),
+        )
+        .expect("Could not load rumblepak WAV file"),
+    );
+
+    let cvt = sdl2::audio::AudioCVT::new(
+        mempak_audio.format,
+        mempak_audio.channels,
+        mempak_audio.freq,
+        audio_device.spec().format,
+        audio_device.spec().channels,
+        audio_device.spec().freq,
+    )
+    .expect("Could not create AudioCVT");
+
+    ui.pak_audio = Some(PakAudio {
+        mempak: cvt.convert(mempak_audio.buffer().to_vec()),
+        rumblepak: cvt.convert(rumblepak_audio.buffer().to_vec()),
+    });
+}
+
+pub fn play_pak_switch(ui: &mut ui::Ui, pak: device::controller::PakType) {
+    let sound;
+    if pak == device::controller::PakType::RumblePak {
+        sound = &ui.pak_audio.as_ref().unwrap().rumblepak;
+    } else if pak == device::controller::PakType::MemPak {
+        sound = &ui.pak_audio.as_ref().unwrap().mempak;
+    } else {
+        return;
+    }
+    let audio_device = ui.audio_device.as_ref().unwrap();
+    let i16_buffer: Vec<i16> = sound
+        .chunks_exact(2)
+        .map(|chunk| i16::from_le_bytes([chunk[0], chunk[1]]))
+        .collect();
+    audio_device.queue_audio(&i16_buffer).unwrap();
 }
 
 pub fn play_audio(device: &mut device::Device, dram_addr: usize, length: u64) {

src/ui/config.rs

@@ -2,12 +2,13 @@ use crate::ui;
 
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct InputProfile {
-    pub keys: [(bool, i32); 18],
-    pub controller_buttons: [(bool, i32); 14],
-    pub controller_axis: [(bool, i32, i16); 18],
-    pub joystick_buttons: [(bool, u32); 14],
-    pub joystick_hat: [(bool, u32, u8); 14],
-    pub joystick_axis: [(bool, u32, i16); 18],
+    pub keys: [(bool, i32); ui::input::PROFILE_SIZE],
+    pub controller_buttons: [(bool, i32); ui::input::PROFILE_SIZE],
+    pub controller_axis: [(bool, i32, i16); ui::input::PROFILE_SIZE],
+    pub joystick_buttons: [(bool, u32); ui::input::PROFILE_SIZE],
+    pub joystick_hat: [(bool, u32, u8); ui::input::PROFILE_SIZE],
+    pub joystick_axis: [(bool, u32, i16); ui::input::PROFILE_SIZE],
+    pub dinput: bool,
 }
 
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -21,6 +22,7 @@ pub struct Input {
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct Video {
     pub upscale: bool,
+    pub integer_scaling: bool,
     pub fullscreen: bool,
 }
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -48,6 +50,7 @@ impl Config {
             },
             video: Video {
                 upscale: false,
+                integer_scaling: false,
                 fullscreen: false,
             },
         }

src/ui/gui.rs

@@ -1,6 +1,8 @@
 use crate::device;
+use crate::netplay;
 use crate::ui;
 use eframe::egui;
+pub mod gui_netplay;
 
 pub struct GopherEguiApp {
     config_dir: std::path::PathBuf,
@@ -14,12 +16,26 @@ pub struct GopherEguiApp {
     input_profiles: Vec<String>,
     controller_enabled: [bool; 4],
     upscale: bool,
+    integer_scaling: bool,
     fullscreen: bool,
     emulate_vru: bool,
+    dinput: bool,
     show_vru_dialog: bool,
-    vru_window_receiver: Option<std::sync::mpsc::Receiver<Vec<String>>>,
-    vru_word_notifier: Option<std::sync::mpsc::Sender<String>>,
+    vru_window_receiver: Option<tokio::sync::mpsc::Receiver<Vec<String>>>,
+    netplay_error_receiver: Option<tokio::sync::mpsc::Receiver<String>>,
+    vru_word_notifier: Option<tokio::sync::mpsc::Sender<String>>,
     vru_word_list: Vec<String>,
+    pub netplay: gui_netplay::GuiNetplay,
+}
+
+struct SaveConfig {
+    selected_controller: [i32; 4],
+    selected_profile: [String; 4],
+    controller_enabled: [bool; 4],
+    upscale: bool,
+    integer_scaling: bool,
+    fullscreen: bool,
+    emulate_vru: bool,
 }
 
 fn get_input_profiles(game_ui: &ui::Ui) -> Vec<String> {
@@ -85,27 +101,23 @@ impl GopherEguiApp {
             input_profiles: get_input_profiles(&game_ui),
             controller_enabled: game_ui.config.input.controller_enabled,
             upscale: game_ui.config.video.upscale,
+            integer_scaling: game_ui.config.video.integer_scaling,
             fullscreen: game_ui.config.video.fullscreen,
             emulate_vru: game_ui.config.input.emulate_vru,
             show_vru_dialog: false,
+            dinput: false,
+            netplay_error_receiver: None,
             vru_window_receiver: None,
             vru_word_notifier: None,
             vru_word_list: Vec::new(),
+            netplay: Default::default(),
         }
     }
 }
 
-fn save_config(
-    game_ui: &mut ui::Ui,
-    selected_controller: [i32; 4],
-    selected_profile: [String; 4],
-    controller_enabled: [bool; 4],
-    upscale: bool,
-    fullscreen: bool,
-    emulate_vru: bool,
-) {
+fn save_config(game_ui: &mut ui::Ui, save_config_items: SaveConfig) {
     let joystick_subsystem = game_ui.joystick_subsystem.as_ref().unwrap();
-    for (pos, item) in selected_controller.iter().enumerate() {
+    for (pos, item) in save_config_items.selected_controller.iter().enumerate() {
         if *item != -1 {
             game_ui.config.input.controller_assignment[pos] = Some(
                 joystick_subsystem
@@ -118,143 +130,285 @@ fn save_config(
         }
     }
 
-    game_ui.config.input.input_profile_binding = selected_profile;
-    game_ui.config.input.controller_enabled = controller_enabled;
+    game_ui.config.input.input_profile_binding = save_config_items.selected_profile;
+    game_ui.config.input.controller_enabled = save_config_items.controller_enabled;
 
-    game_ui.config.video.fullscreen = fullscreen;
-    game_ui.config.video.upscale = upscale;
-    game_ui.config.input.emulate_vru = emulate_vru;
+    game_ui.config.video.upscale = save_config_items.upscale;
+    game_ui.config.video.integer_scaling = save_config_items.integer_scaling;
+    game_ui.config.video.fullscreen = save_config_items.fullscreen;
+    game_ui.config.input.emulate_vru = save_config_items.emulate_vru;
 }
 
 impl Drop for GopherEguiApp {
     fn drop(&mut self) {
         let mut game_ui = ui::Ui::new(self.config_dir.clone());
-        save_config(
-            &mut game_ui,
-            self.selected_controller,
-            self.selected_profile.clone(),
-            self.controller_enabled,
-            self.upscale,
-            self.fullscreen,
-            self.emulate_vru,
-        );
+        let save_config_items = SaveConfig {
+            selected_controller: self.selected_controller,
+            selected_profile: self.selected_profile.clone(),
+            controller_enabled: self.controller_enabled,
+            upscale: self.upscale,
+            integer_scaling: self.integer_scaling,
+            fullscreen: self.fullscreen,
+            emulate_vru: self.emulate_vru,
+        };
+        save_config(&mut game_ui, save_config_items);
     }
 }
 
+fn configure_profile(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    egui::Window::new("Configure Input Profile")
+        // .open(&mut self.configure_profile)
+        .show(ctx, |ui| {
+            ui.horizontal(|ui| {
+                let name_label = ui.label("Profile Name:");
+                ui.text_edit_singleline(&mut app.profile_name)
+                    .labelled_by(name_label.id);
+            });
+            ui.checkbox(&mut app.dinput, "Use DirectInput");
+            ui.horizontal(|ui| {
+                if ui.button("Configure Profile").clicked() {
+                    let profile_name = app.profile_name.clone();
+                    let config_dir = app.config_dir.clone();
+                    let dinput = app.dinput;
+                    tokio::spawn(async move {
+                        let mut game_ui = ui::Ui::new(config_dir);
+                        ui::input::configure_input_profile(&mut game_ui, profile_name, dinput);
+                    });
+                    app.configure_profile = false;
+                    if !app.profile_name.is_empty()
+                        && !app.input_profiles.contains(&app.profile_name)
+                    {
+                        app.input_profiles.push(app.profile_name.clone())
+                    }
+                };
+                ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                    if ui.button("Close").clicked() {
+                        app.configure_profile = false
+                    };
+                })
+            });
+        });
+}
+
+fn show_vru_dialog(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    ctx.show_viewport_immediate(
+        egui::ViewportId::from_hash_of("vru_dialog"),
+        egui::ViewportBuilder::default()
+            .with_title("What would you like to say?")
+            .with_always_on_top(),
+        |ctx, class| {
+            assert!(
+                class == egui::ViewportClass::Immediate,
+                "This egui backend doesn't support multiple viewports"
+            );
+            egui::CentralPanel::default().show(ctx, |ui| {
+                egui::Grid::new("vru_words").show(ui, |ui| {
+                    for (i, v) in app.vru_word_list.iter().enumerate() {
+                        if i % 5 == 0 {
+                            ui.end_row();
+                        }
+                        if ui.button((*v).to_string()).clicked() {
+                            app.vru_word_notifier
+                                .as_ref()
+                                .unwrap()
+                                .try_send(v.clone())
+                                .unwrap();
+                            app.show_vru_dialog = false;
+                        }
+                    }
+                });
+            });
+
+            if ctx.input(|i| i.viewport().close_requested()) {
+                app.vru_word_notifier
+                    .as_ref()
+                    .unwrap()
+                    .try_send(String::from(""))
+                    .unwrap();
+                app.show_vru_dialog = false;
+            }
+        },
+    );
+}
+
+pub fn open_rom(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    let task;
+    let netplay;
+
+    let selected_controller = app.selected_controller;
+    let selected_profile = app.selected_profile.clone();
+    let controller_enabled = app.controller_enabled;
+    let upscale = app.upscale;
+    let integer_scaling = app.integer_scaling;
+    let fullscreen = app.fullscreen;
+    let emulate_vru = app.emulate_vru;
+    let config_dir = app.config_dir.clone();
+    let cache_dir = app.cache_dir.clone();
+    let data_dir = app.data_dir.clone();
+    let peer_addr;
+    let session;
+    let player_number;
+
+    if app.netplay.player_name.is_empty() {
+        task = Some(rfd::AsyncFileDialog::new().pick_file());
+        netplay = false;
+        peer_addr = None;
+        session = None;
+        player_number = None;
+    } else {
+        task = None;
+        netplay = true;
+        peer_addr = app.netplay.peer_addr;
+        session = app.netplay.waiting_session.clone();
+        player_number = Some(app.netplay.player_number);
+    }
+
+    let (netplay_error_notifier, netplay_error_receiver): (
+        tokio::sync::mpsc::Sender<String>,
+        tokio::sync::mpsc::Receiver<String>,
+    ) = tokio::sync::mpsc::channel(8);
+
+    let (vru_window_notifier, vru_window_receiver): (
+        tokio::sync::mpsc::Sender<Vec<String>>,
+        tokio::sync::mpsc::Receiver<Vec<String>>,
+    ) = tokio::sync::mpsc::channel(1);
+
+    let (vru_word_notifier, vru_word_receiver): (
+        tokio::sync::mpsc::Sender<String>,
+        tokio::sync::mpsc::Receiver<String>,
+    ) = tokio::sync::mpsc::channel(1);
+
+    if netplay {
+        app.netplay_error_receiver = Some(netplay_error_receiver);
+    }
+    if emulate_vru && !netplay {
+        app.vru_window_receiver = Some(vru_window_receiver);
+        app.vru_word_notifier = Some(vru_word_notifier);
+    } else {
+        app.vru_window_receiver = None;
+        app.vru_word_notifier = None;
+    }
+
+    let rom_contents = app.netplay.rom_contents.clone();
+    let gui_ctx = ctx.clone();
+    tokio::spawn(async move {
+        let file = if !netplay { task.unwrap().await } else { None };
+
+        if file.is_some() || netplay {
+            let running_file = cache_dir.join("game_running");
+            if running_file.exists() {
+                println!("Game already running");
+                return;
+            }
+            let result = std::fs::File::create(running_file.clone());
+            if result.is_err() {
+                panic!("could not create running file: {}", result.err().unwrap())
+            }
+            let mut device = device::Device::new(config_dir);
+
+            let save_config_items = SaveConfig {
+                selected_controller,
+                selected_profile,
+                controller_enabled,
+                upscale,
+                integer_scaling,
+                fullscreen,
+                emulate_vru,
+            };
+            save_config(&mut device.ui, save_config_items);
+
+            if netplay {
+                device.netplay = Some(netplay::init(
+                    peer_addr.unwrap(),
+                    session.unwrap(),
+                    player_number.unwrap(),
+                    netplay_error_notifier,
+                    gui_ctx,
+                ));
+                device::run_game(rom_contents, data_dir, &mut device, fullscreen);
+                netplay::close(&mut device);
+            } else {
+                if emulate_vru {
+                    device.vru.window_notifier = Some(vru_window_notifier);
+                    device.vru.word_receiver = Some(vru_word_receiver);
+                    device.vru.gui_ctx = Some(gui_ctx);
+                }
+
+                let rom_contents = device::get_rom_contents(file.unwrap().path());
+                if rom_contents.is_empty() {
+                    println!("Could not read rom file");
+                } else {
+                    device::run_game(rom_contents, data_dir, &mut device, fullscreen);
+                }
+            }
+            let result = std::fs::remove_file(running_file.clone());
+            if result.is_err() {
+                panic!("could not remove running file: {}", result.err().unwrap())
+            }
+        }
+    });
+}
+
 impl eframe::App for GopherEguiApp {
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        if self.netplay.create {
+            gui_netplay::netplay_create(self, ctx);
+        }
+
+        if self.netplay.join {
+            gui_netplay::netplay_join(self, ctx);
+        }
+
+        if self.netplay.wait {
+            gui_netplay::netplay_wait(self, ctx);
+        }
+
+        if self.netplay_error_receiver.is_some() {
+            let result = self.netplay_error_receiver.as_mut().unwrap().try_recv();
+            if result.is_ok() {
+                self.netplay.error = result.unwrap();
+            }
+        }
+
+        if !self.netplay.error.is_empty() {
+            gui_netplay::netplay_error(self, ctx, self.netplay.error.clone());
+        }
+
         if self.configure_profile {
-            egui::Window::new("Configure Input Profile")
-                // .open(&mut self.configure_profile)
-                .show(ctx, |ui| {
-                    ui.horizontal(|ui| {
-                        let name_label = ui.label("Profile Name: ");
-                        ui.text_edit_singleline(&mut self.profile_name)
-                            .labelled_by(name_label.id);
-                    });
-                    ui.horizontal(|ui| {
-                        if ui.button("Configure Profile").clicked() {
-                            let profile_name = self.profile_name.clone();
-                            let config_dir = self.config_dir.clone();
-                            execute(async {
-                                let mut game_ui = ui::Ui::new(config_dir);
-                                ui::input::configure_input_profile(&mut game_ui, profile_name);
-                            });
-                            self.configure_profile = false;
-                            if !self.profile_name.is_empty()
-                                && !self.input_profiles.contains(&self.profile_name)
-                            {
-                                self.input_profiles.push(self.profile_name.clone())
-                            }
-                        };
-                        if ui.button("Close").clicked() {
-                            self.configure_profile = false
-                        };
-                    });
-                });
+            configure_profile(self, ctx);
         }
 
         egui::CentralPanel::default().show(ctx, |ui| {
             if self.configure_profile {
                 ui.disable()
             }
+            egui::Grid::new("button_grid")
+                .min_col_width(200.0)
+                .show(ui, |ui| {
+                    if ui.button("Open ROM").clicked() {
+                        open_rom(self, ctx);
+                    }
 
-            if ui.button("Open ROM").clicked() {
-                // Spawn dialog on main thread
-                let task = rfd::AsyncFileDialog::new().pick_file();
-                let selected_controller = self.selected_controller;
-                let selected_profile = self.selected_profile.clone();
-                let controller_enabled = self.controller_enabled;
-                let upscale = self.upscale;
-                let fullscreen = self.fullscreen;
-                let emulate_vru = self.emulate_vru;
-                let config_dir = self.config_dir.clone();
-                let cache_dir = self.cache_dir.clone();
-                let data_dir = self.data_dir.clone();
+                    if ui.button("Netplay: Create Session").clicked()
+                        && !self.cache_dir.join("game_running").exists()
+                    {
+                        self.netplay.create = true;
+                    }
 
-                let (vru_window_notifier, vru_window_receiver): (
-                    std::sync::mpsc::Sender<Vec<String>>,
-                    std::sync::mpsc::Receiver<Vec<String>>,
-                ) = std::sync::mpsc::channel();
+                    ui.end_row();
 
-                let (vru_word_notifier, vru_word_receiver): (
-                    std::sync::mpsc::Sender<String>,
-                    std::sync::mpsc::Receiver<String>,
-                ) = std::sync::mpsc::channel();
+                    if ui.button("Configure Input Profile").clicked()
+                        && !self.cache_dir.join("game_running").exists()
+                    {
+                        self.configure_profile = true;
+                    }
 
-                if emulate_vru {
-                    self.vru_window_receiver = Some(vru_window_receiver);
-                    self.vru_word_notifier = Some(vru_word_notifier);
-                }
-
-                let gui_ctx = ctx.clone();
-                execute(async move {
-                    let file = task.await;
-
-                    if let Some(file) = file {
-                        let running_file = cache_dir.join("game_running");
-                        if running_file.exists() {
-                            return;
-                        }
-                        let result = std::fs::File::create(running_file.clone());
-                        if result.is_err() {
-                            panic!("could not create running file: {}", result.err().unwrap())
-                        }
-                        let mut device = device::Device::new(config_dir);
-                        save_config(
-                            &mut device.ui,
-                            selected_controller,
-                            selected_profile,
-                            controller_enabled,
-                            upscale,
-                            fullscreen,
-                            emulate_vru,
-                        );
-                        if emulate_vru {
-                            device.vru.window_notifier = Some(vru_window_notifier);
-                            device.vru.word_receiver = Some(vru_word_receiver);
-                            device.vru.gui_ctx = Some(gui_ctx);
-                        }
-                        device::run_game(
-                            std::path::Path::new(file.path()),
-                            data_dir,
-                            &mut device,
-                            fullscreen,
-                        );
-                        let result = std::fs::remove_file(running_file.clone());
-                        if result.is_err() {
-                            panic!("could not remove running file: {}", result.err().unwrap())
-                        }
+                    if ui.button("Netplay: Join Session").clicked()
+                        && !self.cache_dir.join("game_running").exists()
+                    {
+                        self.netplay.join = true;
                     }
                 });
-            }
-
-            if ui.button("Configure Input Profile").clicked() {
-                if self.cache_dir.join("game_running").exists() {
-                    return;
-                }
-                self.configure_profile = true;
-            }
 
             ui.add_space(32.0);
             ui.label("Controller Config:");
@@ -306,7 +460,9 @@ impl eframe::App for GopherEguiApp {
             });
             ui.add_space(32.0);
             ui.checkbox(&mut self.upscale, "High-Res Graphics");
+            ui.checkbox(&mut self.integer_scaling, "Integer Scaling");
             ui.checkbox(&mut self.fullscreen, "Fullscreen (Esc closes game)");
+            ui.add_space(32.0);
             ui.checkbox(
                 &mut self.emulate_vru,
                 "Emulate VRU (connects VRU to controller port 4)",
@@ -316,7 +472,7 @@ impl eframe::App for GopherEguiApp {
         });
 
         if self.emulate_vru && self.vru_window_receiver.is_some() {
-            let result = self.vru_window_receiver.as_ref().unwrap().try_recv();
+            let result = self.vru_window_receiver.as_mut().unwrap().try_recv();
             if result.is_ok() {
                 self.show_vru_dialog = true;
                 self.vru_word_list = result.unwrap();
@@ -324,52 +480,11 @@ impl eframe::App for GopherEguiApp {
         }
 
         if self.show_vru_dialog {
-            ctx.show_viewport_immediate(
-                egui::ViewportId::from_hash_of("vru_dialog"),
-                egui::ViewportBuilder::default()
-                    .with_title("What would you like to say?")
-                    .with_always_on_top(),
-                |ctx, class| {
-                    assert!(
-                        class == egui::ViewportClass::Immediate,
-                        "This egui backend doesn't support multiple viewports"
-                    );
-                    egui::CentralPanel::default().show(ctx, |ui| {
-                        egui::Grid::new("vru_words").show(ui, |ui| {
-                            for (i, v) in self.vru_word_list.iter().enumerate() {
-                                if i % 5 == 0 {
-                                    ui.end_row();
-                                }
-                                if ui.button((*v).to_string()).clicked() {
-                                    self.vru_word_notifier
-                                        .as_ref()
-                                        .unwrap()
-                                        .send(v.clone())
-                                        .unwrap();
-                                    self.show_vru_dialog = false;
-                                }
-                            }
-                        });
-                    });
-
-                    if ctx.input(|i| i.viewport().close_requested()) {
-                        self.vru_word_notifier
-                            .as_ref()
-                            .unwrap()
-                            .send(String::from(""))
-                            .unwrap();
-                        self.show_vru_dialog = false;
-                    }
-                },
-            );
+            show_vru_dialog(self, ctx);
         }
     }
 }
 
-fn execute<F: std::future::Future<Output = ()> + Send + 'static>(f: F) {
-    std::thread::spawn(move || futures::executor::block_on(f));
-}
-
 fn add_japanese_font(ctx: &egui::Context) {
     ctx.add_font(eframe::epaint::text::FontInsert::new(
         "japanese_font",

src/ui/gui/gui_netplay.rs

@@ -0,0 +1,870 @@
+use crate::device;
+use crate::ui::gui;
+use crate::ui::gui::GopherEguiApp;
+use eframe::egui;
+use sha2::{Digest, Sha256};
+
+const NETPLAY_VERSION: i32 = 17;
+const EMU_NAME: &str = "gopher64";
+
+type GameInfo = (String, String, String, Vec<u8>);
+
+#[derive(Default)]
+pub struct GuiNetplay {
+    pub create: bool,
+    pub join: bool,
+    pub wait: bool,
+    pub session_name: String,
+    pub password: String,
+    pub player_name: String,
+    pub error: String,
+    pub create_rom_label: String,
+    pub join_rom_label: String,
+    pub send_chat: bool,
+    pub have_sessions: Option<(String, String)>,
+    pub begin_game: bool,
+    pub chat_log: String,
+    pub chat_message: String,
+    pub selected_session: Option<NetplayRoom>,
+    pub pending_begin: bool,
+    pub peer_addr: Option<std::net::SocketAddr>,
+    pub motd: String,
+    pub sessions: Vec<NetplayRoom>,
+    pub rom_contents: Vec<u8>,
+    pub player_number: u8,
+    pub player_names: [String; 4],
+    pub server: (String, String),
+    pub socket_waiting: bool,
+    pub game_info: GameInfo,
+    pub servers: std::collections::HashMap<String, String>,
+    pub waiting_session: Option<NetplayRoom>,
+    pub socket:
+        Option<tungstenite::WebSocket<tungstenite::stream::MaybeTlsStream<std::net::TcpStream>>>,
+    pub server_receiver:
+        Option<tokio::sync::mpsc::Receiver<std::collections::HashMap<String, String>>>,
+    pub game_info_receiver: Option<tokio::sync::mpsc::Receiver<GameInfo>>,
+    pub broadcast_socket: Option<std::net::UdpSocket>,
+    pub broadcast_timer: Option<std::time::Instant>,
+}
+
+#[derive(serde::Serialize, serde::Deserialize, PartialEq, Default, Clone)]
+pub struct NetplayRoom {
+    room_name: Option<String>,
+    password: Option<String>,
+    protected: Option<bool>,
+    #[serde(rename = "MD5")]
+    md5: Option<String>,
+    game_name: Option<String>,
+    pub port: Option<i32>,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct NetplayMessage {
+    #[serde(rename = "type")]
+    message_type: String,
+    player_name: Option<String>,
+    client_sha: Option<String>,
+    netplay_version: Option<i32>,
+    emulator: Option<String>,
+    room: Option<NetplayRoom>,
+    accept: Option<i32>,
+    message: Option<String>,
+    auth: Option<String>,
+    player_names: Option<[String; 4]>,
+    #[serde(rename = "authTime")]
+    auth_time: Option<String>,
+    rooms: Option<Vec<NetplayRoom>>,
+}
+
+fn get_servers(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.servers.is_empty() {
+        if app.netplay.broadcast_socket.is_none() {
+            app.netplay.broadcast_socket = Some(
+                std::net::UdpSocket::bind((std::net::Ipv4Addr::UNSPECIFIED, 0))
+                    .expect("couldn't bind to address"),
+            );
+            let socket = app.netplay.broadcast_socket.as_ref().unwrap();
+            socket
+                .set_broadcast(true)
+                .expect("set_broadcast call failed");
+            socket
+                .set_nonblocking(true)
+                .expect("could not set up socket");
+            let data: [u8; 1] = [1];
+            socket
+                .send_to(&data, (std::net::Ipv4Addr::BROADCAST, 45000))
+                .expect("couldn't send data");
+            app.netplay.broadcast_timer =
+                Some(std::time::Instant::now() + std::time::Duration::from_secs(5));
+            ctx.request_repaint();
+        }
+        if app.netplay.server_receiver.is_none() {
+            let (tx, rx) = tokio::sync::mpsc::channel(1);
+            app.netplay.server_receiver = Some(rx);
+            let gui_ctx = ctx.clone();
+            tokio::spawn(async move {
+                if let Ok(response) =
+                    reqwest::get("https://m64p.s3.amazonaws.com/servers.json").await
+                {
+                    if let Ok(servers) = response
+                        .json::<std::collections::HashMap<String, String>>()
+                        .await
+                    {
+                        let _ = tx.send(servers).await;
+                        gui_ctx.request_repaint();
+                    }
+                }
+            });
+        }
+    }
+    if app.netplay.broadcast_timer.is_some()
+        && std::time::Instant::now() > app.netplay.broadcast_timer.unwrap()
+    {
+        app.netplay.broadcast_timer = None;
+    }
+    if app.netplay.broadcast_socket.is_some() && app.netplay.broadcast_timer.is_some() {
+        let mut buffer = [0; 1024];
+        let result = app
+            .netplay
+            .broadcast_socket
+            .as_ref()
+            .unwrap()
+            .recv_from(&mut buffer);
+        if result.is_ok() {
+            let (amt, _src) = result.unwrap();
+            let data: std::collections::HashMap<String, String> =
+                serde_json::from_slice(&buffer[..amt]).unwrap();
+            for server in data.iter() {
+                let (server_name, server_ip) = server;
+                app.netplay
+                    .servers
+                    .insert(server_name.to_string(), server_ip.to_string());
+                app.netplay.server = (server.0.clone(), server.1.clone());
+            }
+            app.netplay.broadcast_socket = None;
+        }
+        ctx.request_repaint();
+    }
+    if app.netplay.server_receiver.is_some() {
+        let result = app.netplay.server_receiver.as_mut().unwrap().try_recv();
+        if result.is_ok() {
+            app.netplay.servers.extend(result.unwrap());
+            app.netplay.server_receiver = None;
+            if app.netplay.server.0.is_empty() {
+                let first_server = app.netplay.servers.iter().next().unwrap();
+                app.netplay.server = (first_server.0.clone(), first_server.1.clone());
+            }
+        }
+        ctx.request_repaint();
+    }
+}
+
+pub fn netplay_create(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    egui::Window::new("Create Netplay Session").show(ctx, |ui| {
+        egui::Grid::new("netplay_create_grid").show(ui, |ui| {
+            let profile_name_label = ui.label("Session Name:");
+            let mut size = ui.spacing().interact_size;
+            size.x = 200.0;
+            ui.add_sized(size, |ui: &mut egui::Ui| {
+                ui.text_edit_singleline(&mut app.netplay.session_name)
+                    .labelled_by(profile_name_label.id)
+            });
+
+            ui.end_row();
+
+            let password_label = ui.label("Password (Optional):");
+
+            ui.text_edit_singleline(&mut app.netplay.password)
+                .labelled_by(password_label.id);
+
+            ui.end_row();
+
+            ui.label("ROM");
+            if app.netplay.create_rom_label.is_empty() {
+                app.netplay.create_rom_label = "Open ROM".to_string();
+            }
+            if ui.button(&app.netplay.create_rom_label).clicked() {
+                let task = rfd::AsyncFileDialog::new().pick_file();
+                let (tx, rx) = tokio::sync::mpsc::channel(1);
+                app.netplay.game_info_receiver = Some(rx);
+                let gui_ctx = ctx.clone();
+                app.netplay.create_rom_label = "Inspecting ROM".to_string();
+                tokio::spawn(async move {
+                    let file = task.await;
+
+                    if let Some(file) = file {
+                        let rom_contents = device::get_rom_contents(file.path());
+                        if !rom_contents.is_empty() {
+                            let hash = device::cart_rom::calculate_hash(&rom_contents);
+                            let game_name = std::str::from_utf8(&rom_contents[0x20..0x20 + 0x14])
+                                .unwrap()
+                                .to_string();
+                            let _ = tx
+                                .send((hash, game_name, file.file_name(), rom_contents))
+                                .await;
+                        } else {
+                            let _ = tx
+                                .send((
+                                    "".to_string(),
+                                    "".to_string(),
+                                    "Invalid ROM".to_string(),
+                                    vec![],
+                                ))
+                                .await;
+                        }
+                    } else {
+                        let _ = tx
+                            .send((
+                                "".to_string(),
+                                "".to_string(),
+                                "Open ROM".to_string(),
+                                vec![],
+                            ))
+                            .await;
+                    }
+                    gui_ctx.request_repaint();
+                });
+            }
+
+            ui.end_row();
+
+            let player_name_label = ui.label("Player Name:");
+
+            ui.text_edit_singleline(&mut app.netplay.player_name)
+                .labelled_by(player_name_label.id);
+
+            ui.end_row();
+
+            ui.label("Server:");
+
+            get_servers(app, ctx);
+
+            if app.netplay.game_info_receiver.is_some() {
+                let result = app.netplay.game_info_receiver.as_mut().unwrap().try_recv();
+                if result.is_ok() {
+                    app.netplay.game_info_receiver = None;
+                    let data = result.unwrap();
+                    if !data.0.is_empty() {
+                        app.netplay.game_info = data;
+                        app.netplay.rom_contents = app.netplay.game_info.3.clone();
+                        app.netplay.create_rom_label = app.netplay.game_info.2.clone();
+                    } else {
+                        app.netplay.create_rom_label = data.2;
+                    }
+                }
+                ctx.request_repaint();
+            }
+
+            egui::ComboBox::from_id_salt("server-combobox")
+                .selected_text(app.netplay.server.0.to_string())
+                .show_ui(ui, |ui| {
+                    for server in app.netplay.servers.iter() {
+                        ui.selectable_value(
+                            &mut app.netplay.server,
+                            (server.0.clone(), server.1.clone()),
+                            server.0,
+                        );
+                    }
+                });
+
+            ui.end_row();
+
+            if app.netplay.socket_waiting {
+                let data = app.netplay.socket.as_mut().unwrap().read();
+                if data.is_ok() {
+                    let message: NetplayMessage =
+                        serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+                    if message.accept.unwrap() == 0 {
+                        if message.message_type == "reply_create_room" {
+                            app.netplay.create = false;
+                            app.netplay.wait = true;
+                            app.netplay.waiting_session = Some(message.room.unwrap());
+                        }
+                    } else {
+                        app.netplay.error = message.message.unwrap();
+                    }
+                    app.netplay.socket_waiting = false;
+                }
+                ctx.request_repaint();
+            }
+        });
+        ui.horizontal(|ui| {
+            if ui.button("Create Session").clicked() {
+                if app.netplay.player_name.is_empty() {
+                    app.netplay.error = "Player Name cannot be empty".to_string();
+                } else if app.netplay.session_name.is_empty() {
+                    app.netplay.error = "Session Name cannot be empty".to_string();
+                } else if app.netplay.game_info.0.is_empty() {
+                    app.netplay.error = "ROM not loaded".to_string();
+                } else {
+                    let now_utc = chrono::Utc::now().timestamp_millis().to_string();
+                    let hasher = Sha256::new().chain_update(&now_utc).chain_update(EMU_NAME);
+                    let mut game_name = app.netplay.game_info.1.trim().to_string();
+                    if game_name.is_empty() {
+                        // If the ROM doesn't report a name, use the filename
+                        game_name = app.netplay.create_rom_label.clone();
+                    }
+                    let netplay_message = NetplayMessage {
+                        message_type: "request_create_room".to_string(),
+                        player_name: Some(app.netplay.player_name.clone()),
+                        client_sha: Some(env!("CARGO_PKG_VERSION").to_string()),
+                        netplay_version: Some(NETPLAY_VERSION),
+                        emulator: Some(EMU_NAME.to_string()),
+                        accept: None,
+                        message: None,
+                        rooms: None,
+                        auth_time: Some(now_utc),
+                        player_names: None,
+                        auth: Some(format!("{:x}", hasher.finalize())),
+                        room: Some(NetplayRoom {
+                            room_name: Some(app.netplay.session_name.clone()),
+                            password: Some(app.netplay.password.clone()),
+                            game_name: Some(game_name),
+                            md5: Some(app.netplay.game_info.0.clone()),
+                            protected: None,
+                            port: None,
+                        }),
+                    };
+                    let (mut socket, _response) =
+                        tungstenite::connect(&app.netplay.server.1).expect("Can't connect");
+                    socket
+                        .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                            serde_json::to_vec(&netplay_message).unwrap(),
+                        )))
+                        .unwrap();
+                    match socket.get_mut() {
+                        tungstenite::stream::MaybeTlsStream::Plain(stream) => {
+                            app.netplay.peer_addr = Some(stream.peer_addr().unwrap());
+                            stream.set_nonblocking(true)
+                        }
+                        _ => unimplemented!(),
+                    }
+                    .expect("could not set socket to non-blocking");
+                    app.netplay.socket_waiting = true;
+                    app.netplay.socket = Some(socket);
+                }
+            }
+
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        while socket.read().is_ok() {}
+                    }
+                    app.netplay = Default::default();
+                };
+            })
+        });
+    });
+}
+
+fn get_sessions(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.have_sessions.is_some()
+        && app.netplay.server != app.netplay.have_sessions.as_ref().unwrap().clone()
+    {
+        // User has changed the server
+        app.netplay.have_sessions = None;
+        app.netplay.socket = None;
+    }
+    if app.netplay.socket.is_none() {
+        let (mut sock, _response) =
+            tungstenite::connect(&app.netplay.server.1).expect("Can't connect");
+        match sock.get_mut() {
+            tungstenite::stream::MaybeTlsStream::Plain(stream) => {
+                app.netplay.peer_addr = Some(stream.peer_addr().unwrap());
+                stream.set_nonblocking(true)
+            }
+            _ => unimplemented!(),
+        }
+        .expect("could not set socket to non-blocking");
+        app.netplay.socket = Some(sock);
+    }
+    let socket = app.netplay.socket.as_mut().unwrap();
+    if app.netplay.have_sessions.is_none() {
+        let now_utc = chrono::Utc::now().timestamp_millis().to_string();
+        let hasher = Sha256::new().chain_update(&now_utc).chain_update(EMU_NAME);
+        let request_rooms = NetplayMessage {
+            message_type: "request_get_rooms".to_string(),
+            player_name: None,
+            client_sha: None,
+            netplay_version: Some(NETPLAY_VERSION),
+            player_names: None,
+            emulator: Some(EMU_NAME.to_string()),
+            accept: None,
+            rooms: None,
+            message: None,
+            auth_time: Some(now_utc),
+            auth: Some(format!("{:x}", hasher.finalize())),
+            room: None,
+        };
+
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&request_rooms).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.have_sessions = Some(app.netplay.server.clone());
+        app.netplay.socket_waiting = true;
+        ctx.request_repaint();
+    }
+}
+
+pub fn netplay_join(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        let data = socket.read();
+        if data.is_ok() {
+            let message: NetplayMessage =
+                serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+            if message.accept.unwrap() == 0 {
+                if message.message_type == "reply_get_rooms" {
+                    if message.rooms.is_some() {
+                        app.netplay.sessions = message.rooms.unwrap();
+                    }
+                } else if message.message_type == "reply_join_room" {
+                    app.netplay.join = false;
+                    app.netplay.wait = true;
+                    app.netplay.waiting_session = Some(message.room.unwrap());
+                }
+                app.netplay.socket_waiting = false;
+            } else {
+                app.netplay.error = message.message.unwrap();
+                app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+            }
+        }
+        ctx.request_repaint();
+    }
+    if app.netplay.game_info_receiver.is_some() {
+        let result = app.netplay.game_info_receiver.as_mut().unwrap().try_recv();
+        if result.is_ok() {
+            app.netplay.game_info_receiver = None;
+            let data = result.unwrap();
+            if !data.0.is_empty() {
+                app.netplay.game_info = data;
+                app.netplay.rom_contents = app.netplay.game_info.3.clone();
+
+                let netplay_message = NetplayMessage {
+                    message_type: "request_join_room".to_string(),
+                    player_name: Some(app.netplay.player_name.clone()),
+                    client_sha: Some(env!("CARGO_PKG_VERSION").to_string()),
+                    netplay_version: None,
+                    emulator: None,
+                    accept: None,
+                    message: None,
+                    rooms: None,
+                    auth_time: None,
+                    player_names: None,
+                    auth: None,
+                    room: Some(NetplayRoom {
+                        room_name: None,
+                        password: Some(app.netplay.password.clone()),
+                        game_name: None,
+                        md5: Some(app.netplay.game_info.0.clone()),
+                        protected: None,
+                        port: app.netplay.selected_session.as_ref().unwrap().port,
+                    }),
+                };
+                let socket = app.netplay.socket.as_mut().unwrap();
+                socket
+                    .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                        serde_json::to_vec(&netplay_message).unwrap(),
+                    )))
+                    .unwrap();
+
+                app.netplay.socket_waiting = true;
+            } else {
+                app.netplay.error = data.2;
+                app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+            }
+        }
+        ctx.request_repaint();
+    }
+    egui::Window::new("Join Netplay Session").show(ctx, |ui| {
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 100.0;
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.player_name).hint_text("Player name"),
+            );
+
+            get_servers(app, ctx);
+
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Refresh").clicked() {
+                    app.netplay.socket = None;
+                    app.netplay.have_sessions = None;
+                    app.netplay.selected_session = None;
+                    ctx.request_repaint();
+                }
+                egui::ComboBox::from_id_salt("server-combobox")
+                    .selected_text(app.netplay.server.0.to_string())
+                    .show_ui(ui, |ui| {
+                        for server in app.netplay.servers.iter() {
+                            ui.selectable_value(
+                                &mut app.netplay.server,
+                                (server.0.clone(), server.1.clone()),
+                                server.0,
+                            );
+                        }
+                    });
+            });
+        });
+        if !app.netplay.server.0.is_empty() {
+            get_sessions(app, ctx);
+        }
+        ui.add_space(16.0);
+        if app.netplay.sessions.is_empty() {
+            ui.label("No sessions available");
+        } else {
+            egui::Grid::new("netplay_join_grid").show(ui, |ui| {
+                ui.label(egui::RichText::new("Session Name (click to select)").underline());
+                ui.label(egui::RichText::new("Game Name").underline());
+                ui.label(egui::RichText::new("Password Protected").underline());
+                ui.end_row();
+
+                for room in app.netplay.sessions.iter() {
+                    ui.selectable_value(
+                        &mut app.netplay.selected_session,
+                        Some(room.clone()),
+                        room.room_name.as_ref().unwrap(),
+                    );
+                    ui.label(room.game_name.as_ref().unwrap());
+                    ui.label(room.protected.unwrap_or(false).to_string());
+                    ui.end_row();
+                }
+            });
+        }
+        ui.add_space(16.0);
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 130.0;
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.password)
+                    .hint_text("Password (if required)"),
+            );
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        while socket.read().is_ok() {}
+                    }
+                    app.netplay = Default::default();
+                };
+                if app.netplay.join_rom_label.is_empty() {
+                    app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+                }
+                if ui.button(&app.netplay.join_rom_label).clicked() {
+                    if app.netplay.player_name.is_empty() {
+                        app.netplay.error = "Player Name cannot be empty".to_string();
+                    } else if app.netplay.selected_session.is_none() {
+                        app.netplay.error = "No session selected".to_string();
+                    } else if app
+                        .netplay
+                        .selected_session
+                        .as_ref()
+                        .unwrap()
+                        .protected
+                        .unwrap()
+                        && app.netplay.password.is_empty()
+                    {
+                        app.netplay.error = "Session requires a password".to_string();
+                    } else {
+                        let task = rfd::AsyncFileDialog::new().pick_file();
+                        let (tx, rx) = tokio::sync::mpsc::channel(1);
+                        app.netplay.game_info_receiver = Some(rx);
+                        let gui_ctx = ctx.clone();
+                        app.netplay.join_rom_label = "Inspecting ROM".to_string();
+                        tokio::spawn(async move {
+                            let file = task.await;
+
+                            if let Some(file) = file {
+                                let rom_contents = device::get_rom_contents(file.path());
+                                if !rom_contents.is_empty() {
+                                    let hash = device::cart_rom::calculate_hash(&rom_contents);
+                                    let game_name =
+                                        std::str::from_utf8(&rom_contents[0x20..0x20 + 0x14])
+                                            .unwrap()
+                                            .to_string();
+                                    let _ = tx
+                                        .send((hash, game_name, file.file_name(), rom_contents))
+                                        .await;
+                                } else {
+                                    let _ = tx
+                                        .send((
+                                            "".to_string(),
+                                            "".to_string(),
+                                            "Invalid ROM".to_string(),
+                                            vec![],
+                                        ))
+                                        .await;
+                                }
+                            } else {
+                                let _ = tx
+                                    .send((
+                                        "".to_string(),
+                                        "".to_string(),
+                                        "No ROM selected".to_string(),
+                                        vec![],
+                                    ))
+                                    .await;
+                            }
+                            gui_ctx.request_repaint();
+                        });
+                    }
+                };
+            });
+        });
+    });
+}
+
+pub fn netplay_wait(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    let motd_message = NetplayMessage {
+        message_type: "request_motd".to_string(),
+        player_name: None,
+        client_sha: None,
+        netplay_version: None,
+        emulator: None,
+        accept: None,
+        rooms: None,
+        player_names: None,
+        message: None,
+        auth_time: None,
+        auth: None,
+        room: None,
+    };
+    let request_players = NetplayMessage {
+        message_type: "request_players".to_string(),
+        player_name: None,
+        client_sha: None,
+        netplay_version: None,
+        player_names: None,
+        emulator: None,
+        rooms: None,
+        accept: None,
+        message: None,
+        auth_time: None,
+        auth: None,
+        room: Some(NetplayRoom {
+            room_name: None,
+            password: None,
+            game_name: None,
+            md5: None,
+            protected: None,
+            port: app.netplay.waiting_session.as_ref().unwrap().port,
+        }),
+    };
+
+    if !app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&motd_message).unwrap(),
+            )))
+            .unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&request_players).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.socket_waiting = true;
+    }
+
+    if app.netplay.begin_game {
+        let begin_game = NetplayMessage {
+            message_type: "request_begin_game".to_string(),
+            player_name: None,
+            client_sha: None,
+            netplay_version: None,
+            player_names: None,
+            rooms: None,
+            emulator: None,
+            accept: None,
+            message: None,
+            auth_time: None,
+            auth: None,
+            room: Some(NetplayRoom {
+                room_name: None,
+                password: None,
+                game_name: None,
+                md5: None,
+                protected: None,
+                port: app.netplay.waiting_session.as_ref().unwrap().port,
+            }),
+        };
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&begin_game).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.begin_game = false;
+    }
+
+    if app.netplay.send_chat {
+        let send_chat = NetplayMessage {
+            message_type: "request_chat_message".to_string(),
+            player_name: Some(app.netplay.player_name.clone()),
+            client_sha: None,
+            netplay_version: None,
+            player_names: None,
+            rooms: None,
+            emulator: None,
+            accept: None,
+            message: Some(app.netplay.chat_message.clone()),
+            auth_time: None,
+            auth: None,
+            room: Some(NetplayRoom {
+                room_name: None,
+                password: None,
+                game_name: None,
+                md5: None,
+                protected: None,
+                port: app.netplay.waiting_session.as_ref().unwrap().port,
+            }),
+        };
+        app.netplay.chat_message.clear();
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&send_chat).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.send_chat = false;
+    }
+
+    if app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        let data = socket.read();
+        if data.is_ok() {
+            let message: NetplayMessage =
+                serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+            if message.accept.unwrap() == 0 {
+                if message.message_type == "reply_motd" {
+                    let re = regex::Regex::new(r"<[^>]*>").unwrap();
+                    app.netplay.motd = re
+                        .replace_all(message.message.unwrap().as_str(), "")
+                        .into_owned();
+                } else if message.message_type == "reply_players" {
+                    app.netplay.player_names = message.player_names.unwrap();
+                } else if message.message_type == "reply_chat_message" {
+                    app.netplay.chat_log.push_str(&message.message.unwrap());
+                    app.netplay.chat_log.push('\n');
+                } else if message.message_type == "reply_begin_game" {
+                    let mut player = 0;
+                    for (i, name) in app.netplay.player_names.iter().enumerate() {
+                        if *name == app.netplay.player_name {
+                            player = i;
+                            break;
+                        }
+                    }
+                    app.netplay.player_number = player as u8;
+                    socket.close(None).unwrap();
+                    while socket.read().is_ok() {}
+                    gui::open_rom(app, ctx);
+                    app.netplay = Default::default();
+                    return;
+                }
+            } else {
+                app.netplay.error = message.message.unwrap();
+            }
+        }
+        ctx.request_repaint();
+    }
+
+    egui::Window::new("Pending Netplay Session").show(ctx, |ui| {
+        egui::Grid::new("netplay_wait_grid_1").show(ui, |ui| {
+            ui.label("Session Name:");
+            let room_name = app
+                .netplay
+                .waiting_session
+                .as_ref()
+                .unwrap()
+                .room_name
+                .as_ref()
+                .unwrap();
+            let game_name = app
+                .netplay
+                .waiting_session
+                .as_ref()
+                .unwrap()
+                .game_name
+                .as_ref()
+                .unwrap();
+            ui.label(room_name);
+            ui.end_row();
+            ui.label("Game Name:");
+            ui.label(game_name);
+            ui.end_row();
+            for i in 0..4 {
+                ui.label(format!("Player {}:", i + 1));
+                ui.label(app.netplay.player_names[i].clone());
+                ui.end_row();
+            }
+        });
+        egui::ScrollArea::vertical()
+            .max_height(100.0)
+            .stick_to_bottom(true)
+            .show(ui, |ui| {
+                ui.add(
+                    egui::TextEdit::multiline(&mut app.netplay.chat_log)
+                        .interactive(false)
+                        .desired_width(ui.available_width()),
+                );
+            });
+
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 200.0;
+
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.chat_message)
+                    .hint_text("Enter chat message here"),
+            );
+
+            if ui
+                .add_enabled(!app.netplay.send_chat, egui::Button::new("Send Message"))
+                .clicked()
+                && !app.netplay.chat_message.is_empty()
+            {
+                app.netplay.send_chat = true;
+            }
+        });
+
+        ui.add_space(16.0);
+        ui.label(app.netplay.motd.clone());
+        ui.add_space(16.0);
+
+        ui.horizontal(|ui| {
+            let button_enabled = app.netplay.player_name == app.netplay.player_names[0]
+                && !app.netplay.pending_begin;
+            if ui
+                .add_enabled(button_enabled, egui::Button::new("Start Session"))
+                .clicked()
+            {
+                app.netplay.begin_game = true;
+                app.netplay.pending_begin = true;
+            }
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        while socket.read().is_ok() {}
+                    }
+                    app.netplay = Default::default();
+                };
+            });
+        });
+    });
+}
+
+pub fn netplay_error(app: &mut GopherEguiApp, ctx: &egui::Context, error: String) {
+    egui::Window::new("Netplay Error").show(ctx, |ui| {
+        ui.label(error);
+        if ui.button("Close").clicked() {
+            app.netplay.error = "".to_string();
+        };
+    });
+}

src/ui/input.rs

@@ -16,22 +16,25 @@ const D_CBUTTON: usize = 10;
 const U_CBUTTON: usize = 11;
 const R_TRIG: usize = 12;
 const L_TRIG: usize = 13;
-const X_AXIS: usize = 16;
-const Y_AXIS: usize = 24;
-
 const AXIS_LEFT: usize = 14;
 const AXIS_RIGHT: usize = 15;
 const AXIS_UP: usize = 16;
 const AXIS_DOWN: usize = 17;
+const CHANGE_PAK: usize = 18;
+pub const PROFILE_SIZE: usize = 19;
+
+const X_AXIS_SHIFT: usize = 16;
+const Y_AXIS_SHIFT: usize = 24;
 
 const MAX_AXIS_VALUE: f64 = 85.0;
 
 pub struct Controllers {
+    pub rumble: bool,
     pub game_controller: Option<sdl2::controller::GameController>,
     pub joystick: Option<sdl2::joystick::Joystick>,
 }
 
-pub fn bound_axis(x: &mut f64, y: &mut f64) {
+fn bound_axis(x: &mut f64, y: &mut f64) {
     let radius = 95.0; // this is roughly the maxium diagonal distance of the controller
 
     // Calculate the distance from the origin (0, 0)
@@ -45,7 +48,7 @@ pub fn bound_axis(x: &mut f64, y: &mut f64) {
     }
 }
 
-pub fn set_axis_from_joystick(
+fn set_axis_from_joystick(
     profile: &ui::config::InputProfile,
     joystick: &sdl2::joystick::Joystick,
 ) -> (f64, f64) {
@@ -111,7 +114,7 @@ fn get_button_from_i32(button: i32) -> sdl2::controller::Button {
     }
 }
 
-pub fn set_axis_from_controller(
+fn set_axis_from_controller(
     profile: &ui::config::InputProfile,
     controller: &sdl2::controller::GameController,
 ) -> (f64, f64) {
@@ -147,9 +150,9 @@ pub fn set_axis_from_controller(
     (x, y)
 }
 
-pub fn set_axis_from_keys(
+fn set_axis_from_keys(
     profile: &ui::config::InputProfile,
-    keyboard_state: sdl2::keyboard::KeyboardState,
+    keyboard_state: &sdl2::keyboard::KeyboardState,
 ) -> (f64, f64) {
     let mut x = 0.0;
     let mut y = 0.0;
@@ -184,7 +187,7 @@ pub fn set_axis_from_keys(
     (x, y)
 }
 
-pub fn set_buttons_from_joystick(
+fn set_buttons_from_joystick(
     profile: &ui::config::InputProfile,
     i: usize,
     joystick: &sdl2::joystick::Joystick,
@@ -214,7 +217,7 @@ pub fn set_buttons_from_joystick(
     }
 }
 
-pub fn set_buttons_from_controller(
+fn set_buttons_from_controller(
     profile: &ui::config::InputProfile,
     i: usize,
     controller: &sdl2::controller::GameController,
@@ -236,7 +239,69 @@ pub fn set_buttons_from_controller(
     }
 }
 
-pub fn get(ui: &mut ui::Ui, channel: usize) -> u32 {
+pub fn set_rumble(ui: &mut ui::Ui, channel: usize, rumble: u8) {
+    if !ui.controllers[channel].rumble {
+        return;
+    }
+    let controller = &mut ui.controllers[channel].game_controller;
+    let joystick = &mut ui.controllers[channel].joystick;
+    if controller.is_some() {
+        controller
+            .as_mut()
+            .unwrap()
+            .set_rumble(
+                (rumble & 1) as u16 * u16::MAX,
+                (rumble & 1) as u16 * u16::MAX,
+                (rumble & 1) as u32 * 60000,
+            )
+            .unwrap();
+    } else if joystick.is_some() {
+        joystick
+            .as_mut()
+            .unwrap()
+            .set_rumble(
+                (rumble & 1) as u16 * u16::MAX,
+                (rumble & 1) as u16 * u16::MAX,
+                (rumble & 1) as u32 * 60000,
+            )
+            .unwrap();
+    }
+}
+
+fn change_paks(
+    profile: &ui::config::InputProfile,
+    joystick: &Option<sdl2::joystick::Joystick>,
+    controller: &Option<sdl2::controller::GameController>,
+    keyboard_state: &sdl2::keyboard::KeyboardState,
+) -> bool {
+    let controller_button = profile.controller_buttons[CHANGE_PAK];
+    let joystick_button = profile.joystick_buttons[CHANGE_PAK];
+    let joystick_hat = profile.joystick_hat[CHANGE_PAK];
+    let key = profile.keys[CHANGE_PAK];
+
+    let mut pressed = false;
+    if controller_button.0 && controller.is_some() {
+        pressed = controller
+            .as_ref()
+            .unwrap()
+            .button(get_button_from_i32(controller_button.1));
+    } else if joystick_button.0 && joystick.is_some() {
+        pressed = joystick
+            .as_ref()
+            .unwrap()
+            .button(joystick_button.1)
+            .unwrap();
+    } else if joystick_hat.0 && joystick.is_some() {
+        pressed = joystick.as_ref().unwrap().hat(joystick_hat.1).unwrap()
+            == sdl2::joystick::HatState::from_raw(joystick_hat.2);
+    } else if key.0 {
+        pressed =
+            keyboard_state.is_scancode_pressed(sdl2::keyboard::Scancode::from_i32(key.1).unwrap());
+    }
+    pressed
+}
+
+pub fn get(ui: &mut ui::Ui, channel: usize) -> (u32, bool) {
     let events = ui.sdl_context.as_ref().unwrap().event_pump().unwrap();
     let keyboard_state = events.keyboard_state();
 
@@ -256,10 +321,10 @@ pub fn get(ui: &mut ui::Ui, channel: usize) -> u32 {
             }
         }
 
-        if joystick.is_some() {
-            set_buttons_from_joystick(profile, i, joystick.as_ref().unwrap(), &mut keys);
-        } else if controller.is_some() {
+        if controller.is_some() {
             set_buttons_from_controller(profile, i, controller.as_ref().unwrap(), &mut keys);
+        } else if joystick.is_some() {
+            set_buttons_from_joystick(profile, i, joystick.as_ref().unwrap(), &mut keys);
         }
     }
 
@@ -267,19 +332,23 @@ pub fn get(ui: &mut ui::Ui, channel: usize) -> u32 {
     let mut y: f64 = 0.0;
 
     if profile_name != "default" || channel == 0 {
-        (x, y) = set_axis_from_keys(profile, keyboard_state);
+        (x, y) = set_axis_from_keys(profile, &keyboard_state);
     }
 
-    if joystick.is_some() {
-        (x, y) = set_axis_from_joystick(profile, joystick.as_ref().unwrap())
-    } else if controller.is_some() {
+    if controller.is_some() {
         (x, y) = set_axis_from_controller(profile, controller.as_ref().unwrap())
+    } else if joystick.is_some() {
+        (x, y) = set_axis_from_joystick(profile, joystick.as_ref().unwrap())
     }
     bound_axis(&mut x, &mut y);
 
-    keys |= (x.round() as i8 as u8 as u32) << X_AXIS;
-    keys |= (y.round() as i8 as u8 as u32) << Y_AXIS;
-    keys
+    keys |= (x.round() as i8 as u8 as u32) << X_AXIS_SHIFT;
+    keys |= (y.round() as i8 as u8 as u32) << Y_AXIS_SHIFT;
+
+    (
+        keys,
+        change_paks(profile, joystick, controller, &keyboard_state),
+    )
 }
 
 pub fn list_controllers(ui: &ui::Ui) {
@@ -323,7 +392,7 @@ pub fn clear_bindings(ui: &mut ui::Ui) {
     }
 }
 
-pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
+pub fn configure_input_profile(ui: &mut ui::Ui, profile: String, dinput: bool) {
     if profile == "default" {
         println!("Profile name cannot be default");
         return;
@@ -332,10 +401,20 @@ pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
         println!("Profile name cannot be empty");
         return;
     }
+    let controller_subsystem = ui.controller_subsystem.as_ref().unwrap();
     let joystick_subsystem = ui.joystick_subsystem.as_ref().unwrap();
+    let mut controllers = vec![];
     let mut joysticks = vec![];
     for i in 0..joystick_subsystem.num_joysticks().unwrap() {
-        joysticks.push(joystick_subsystem.open(i));
+        if !dinput {
+            if let Ok(controller) = controller_subsystem.open(i) {
+                controllers.push(controller);
+                continue;
+            }
+        }
+        if let Ok(joystick) = joystick_subsystem.open(i) {
+            joysticks.push(joystick);
+        }
     }
 
     let mut builder =
@@ -349,7 +428,7 @@ pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
     let font =
         rusttype::Font::try_from_bytes(include_bytes!("../../data/Roboto-Regular.ttf")).unwrap();
 
-    let key_labels = [
+    let key_labels: [(&str, usize); PROFILE_SIZE] = [
         ("A", A_BUTTON),
         ("B", B_BUTTON),
         ("Start", START_BUTTON),
@@ -368,14 +447,18 @@ pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
         ("Control Stick Down", AXIS_DOWN),
         ("Control Stick Left", AXIS_LEFT),
         ("Control Stick Right", AXIS_RIGHT),
+        ("Change Pak", CHANGE_PAK),
     ];
 
-    let mut new_keys = [(false, 0); 18];
-    let mut new_joystick_buttons = [(false, 0u32); 14];
-    let mut new_joystick_hat = [(false, 0u32, 0); 14];
-    let mut new_joystick_axis = [(false, 0u32, 0); 18];
+    let mut new_keys = [(false, 0); PROFILE_SIZE];
+    let mut new_joystick_buttons = [(false, 0u32); PROFILE_SIZE];
+    let mut new_joystick_hat = [(false, 0u32, 0); PROFILE_SIZE];
+    let mut new_joystick_axis = [(false, 0u32, 0); PROFILE_SIZE];
+    let mut new_controller_buttons = [(false, 0i32); PROFILE_SIZE];
+    let mut new_controller_axis = [(false, 0i32, 0); PROFILE_SIZE];
 
-    let mut last_axis_result = (false, 0, 0);
+    let mut last_joystick_axis_result = (false, 0, 0);
+    let mut last_controller_axis_result = (false, 0, 0);
     let mut events = ui.sdl_context.as_ref().unwrap().event_pump().unwrap();
     for (key, value) in key_labels.iter() {
         for _event in events.poll_iter() {} // clear events
@@ -402,32 +485,57 @@ pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
                         new_keys[*value] = (true, scancode as i32);
                         key_set = true
                     }
+                    sdl2::event::Event::ControllerButtonDown { button, .. } => {
+                        if !controllers.is_empty() {
+                            new_controller_buttons[*value] = (true, button as i32);
+                            key_set = true
+                        }
+                    }
+                    sdl2::event::Event::ControllerAxisMotion {
+                        axis,
+                        value: axis_value,
+                        ..
+                    } => {
+                        if !controllers.is_empty() && axis_value.saturating_abs() > i16::MAX / 2 {
+                            let result =
+                                (true, axis as i32, axis_value / axis_value.saturating_abs());
+                            if result != last_controller_axis_result {
+                                new_controller_axis[*value] = result;
+                                last_controller_axis_result = result;
+                                key_set = true
+                            }
+                        }
+                    }
                     sdl2::event::Event::JoyButtonDown { button_idx, .. } => {
-                        new_joystick_buttons[*value] = (true, button_idx as u32);
-                        key_set = true
+                        if !joysticks.is_empty() {
+                            new_joystick_buttons[*value] = (true, button_idx as u32);
+                            key_set = true
+                        }
                     }
                     sdl2::event::Event::JoyHatMotion { hat_idx, state, .. } => {
-                        new_joystick_hat[*value] = (
-                            true,
-                            hat_idx as u32,
-                            sdl2::joystick::HatState::to_raw(state),
-                        );
-                        key_set = true
+                        if !joysticks.is_empty() && state != sdl2::joystick::HatState::Centered {
+                            new_joystick_hat[*value] = (
+                                true,
+                                hat_idx as u32,
+                                sdl2::joystick::HatState::to_raw(state),
+                            );
+                            key_set = true
+                        }
                     }
                     sdl2::event::Event::JoyAxisMotion {
                         axis_idx,
                         value: axis_value,
                         ..
                     } => {
-                        if axis_value.saturating_abs() > 24576 {
+                        if !joysticks.is_empty() && axis_value.saturating_abs() > i16::MAX / 2 {
                             let result = (
                                 true,
                                 axis_idx as u32,
                                 axis_value / axis_value.saturating_abs(),
                             );
-                            if result != last_axis_result {
+                            if result != last_joystick_axis_result {
                                 new_joystick_axis[*value] = result;
-                                last_axis_result = result;
+                                last_joystick_axis_result = result;
                                 key_set = true
                             }
                         }
@@ -440,19 +548,20 @@ pub fn configure_input_profile(ui: &mut ui::Ui, profile: String) {
 
     let new_profile = ui::config::InputProfile {
         keys: new_keys,
-        controller_buttons: Default::default(),
-        controller_axis: Default::default(),
+        controller_buttons: new_controller_buttons,
+        controller_axis: new_controller_axis,
         joystick_buttons: new_joystick_buttons,
         joystick_hat: new_joystick_hat,
         joystick_axis: new_joystick_axis,
+        dinput,
     };
     ui.config.input.input_profiles.insert(profile, new_profile);
 }
 
 pub fn get_default_profile() -> ui::config::InputProfile {
-    let mut default_controller_buttons = [(false, 0); 14];
-    let mut default_controller_axis = [(false, 0, 0); 18];
-    let mut default_keys = [(false, 0); 18];
+    let mut default_controller_buttons = [(false, 0); PROFILE_SIZE];
+    let mut default_controller_axis = [(false, 0, 0); PROFILE_SIZE];
+    let mut default_keys = [(false, 0); PROFILE_SIZE];
     default_keys[R_DPAD] = (true, sdl2::keyboard::Scancode::D as i32);
     default_keys[L_DPAD] = (true, sdl2::keyboard::Scancode::A as i32);
     default_keys[D_DPAD] = (true, sdl2::keyboard::Scancode::S as i32);
@@ -471,6 +580,7 @@ pub fn get_default_profile() -> ui::config::InputProfile {
     default_keys[AXIS_RIGHT] = (true, sdl2::keyboard::Scancode::Right as i32);
     default_keys[AXIS_UP] = (true, sdl2::keyboard::Scancode::Up as i32);
     default_keys[AXIS_DOWN] = (true, sdl2::keyboard::Scancode::Down as i32);
+    default_keys[CHANGE_PAK] = (true, sdl2::keyboard::Scancode::Comma as i32);
 
     default_controller_buttons[R_DPAD] = (true, sdl2::controller::Button::DPadRight as i32);
     default_controller_buttons[L_DPAD] = (true, sdl2::controller::Button::DPadLeft as i32);
@@ -490,6 +600,7 @@ pub fn get_default_profile() -> ui::config::InputProfile {
     default_controller_axis[AXIS_RIGHT] = (true, sdl2::controller::Axis::LeftX as i32, 1);
     default_controller_axis[AXIS_UP] = (true, sdl2::controller::Axis::LeftY as i32, -1);
     default_controller_axis[AXIS_DOWN] = (true, sdl2::controller::Axis::LeftY as i32, 1);
+    default_controller_buttons[CHANGE_PAK] = (true, sdl2::controller::Button::Back as i32);
 
     ui::config::InputProfile {
         keys: default_keys,
@@ -498,6 +609,7 @@ pub fn get_default_profile() -> ui::config::InputProfile {
         joystick_buttons: Default::default(),
         joystick_hat: Default::default(),
         joystick_axis: Default::default(),
+        dinput: false,
     }
 }
 
@@ -520,12 +632,24 @@ pub fn init(ui: &mut ui::Ui) {
                 }
             }
             if joystick_index < u32::MAX {
-                if ui.config.input.input_profile_binding[i] == "default" {
+                let profile_name = ui.config.input.input_profile_binding[i].clone();
+                let profile = ui.config.input.input_profiles.get(&profile_name).unwrap();
+
+                if !profile.dinput {
                     let controller_result = controller_subsystem.open(joystick_index);
                     if controller_result.is_ok() {
                         ui.controllers[i].game_controller = Some(controller_result.unwrap());
+                        if ui.controllers[i]
+                            .game_controller
+                            .as_ref()
+                            .unwrap()
+                            .has_rumble()
+                        {
+                            ui.controllers[i].rumble = true;
+                        }
                     }
                 }
+
                 if ui.controllers[i].game_controller.is_none() {
                     let joystick_result = joystick_subsystem.open(joystick_index);
                     if joystick_result.is_err() {
@@ -535,6 +659,9 @@ pub fn init(ui: &mut ui::Ui) {
                         )
                     } else {
                         ui.controllers[i].joystick = Some(joystick_result.unwrap());
+                        if ui.controllers[i].joystick.as_ref().unwrap().has_rumble() {
+                            ui.controllers[i].rumble = true;
+                        }
                     }
                 }
             } else {

src/ui/storage.rs

@@ -1,3 +1,5 @@
+use crate::device;
+use crate::netplay;
 use crate::ui;
 
 #[derive(PartialEq)]
@@ -28,7 +30,7 @@ pub struct Saves {
     pub romsave: (serde_json::Map<String, serde_json::Value>, bool),
 }
 
-pub fn get_save_type(game_id: &str) -> Vec<SaveTypes> {
+fn get_save_type(game_id: &str) -> Vec<SaveTypes> {
     match game_id {
         "NB7" | // Banjo-Tooie [Banjo to Kazooie no Daiboken 2 (J)]
         "NGT" | // City Tour GrandPrix - Zen Nihon GT Senshuken
@@ -118,53 +120,114 @@ pub fn init(ui: &mut ui::Ui, data_dir: std::path::PathBuf) {
         .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".romsave");
 }
 
-pub fn load_saves(ui: &mut ui::Ui) {
-    let eep = std::fs::read(&mut ui.paths.eep_file_path);
-    if eep.is_ok() {
-        ui.saves.eeprom.0 = eep.unwrap();
+pub fn load_saves(ui: &mut ui::Ui, netplay: &mut Option<netplay::Netplay>) {
+    if netplay.is_none() || netplay.as_ref().unwrap().player_number == 0 {
+        let eep = std::fs::read(&mut ui.paths.eep_file_path);
+        if eep.is_ok() {
+            ui.saves.eeprom.0 = eep.unwrap();
+        }
+        let sra = std::fs::read(&mut ui.paths.sra_file_path);
+        if sra.is_ok() {
+            ui.saves.sram.0 = sra.unwrap();
+        }
+        let fla = std::fs::read(&mut ui.paths.fla_file_path);
+        if fla.is_ok() {
+            ui.saves.flash.0 = fla.unwrap();
+        }
+        let mempak = std::fs::read(&mut ui.paths.pak_file_path);
+        if mempak.is_ok() {
+            ui.saves.mempak.0 = mempak.unwrap();
+        }
+        if netplay.is_none() {
+            // can't do romsaves with the current netplay implementation
+            let romsave = std::fs::read(&mut ui.paths.romsave_file_path);
+            if romsave.is_ok() {
+                ui.saves.romsave.0 = serde_json::from_slice(romsave.unwrap().as_ref()).unwrap();
+            }
+        }
     }
-    let sra = std::fs::read(&mut ui.paths.sra_file_path);
-    if sra.is_ok() {
-        ui.saves.sram.0 = sra.unwrap();
-    }
-    let fla = std::fs::read(&mut ui.paths.fla_file_path);
-    if fla.is_ok() {
-        ui.saves.flash.0 = fla.unwrap();
-    }
-    let mempak = std::fs::read(&mut ui.paths.pak_file_path);
-    if mempak.is_ok() {
-        ui.saves.mempak.0 = mempak.unwrap();
-    }
-    let romsave = std::fs::read(&mut ui.paths.romsave_file_path);
-    if romsave.is_ok() {
-        ui.saves.romsave.0 = serde_json::from_slice(romsave.unwrap().as_ref()).unwrap();
+
+    if netplay.is_some() {
+        if netplay.as_ref().unwrap().player_number == 0 {
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "eep",
+                &ui.saves.eeprom.0,
+                device::cart::EEPROM_MAX_SIZE,
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "sra",
+                &ui.saves.sram.0,
+                device::sram::SRAM_SIZE,
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "fla",
+                &ui.saves.flash.0,
+                device::sram::FLASHRAM_SIZE,
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "mpk",
+                &ui.saves.mempak.0,
+                device::controller::mempak::MEMPAK_SIZE * 4,
+            );
+        } else {
+            netplay::receive_save(
+                netplay.as_mut().unwrap(),
+                "eep",
+                &mut ui.saves.eeprom.0,
+                device::cart::EEPROM_MAX_SIZE,
+            );
+            netplay::receive_save(
+                netplay.as_mut().unwrap(),
+                "sra",
+                &mut ui.saves.sram.0,
+                device::sram::SRAM_SIZE,
+            );
+            netplay::receive_save(
+                netplay.as_mut().unwrap(),
+                "fla",
+                &mut ui.saves.flash.0,
+                device::sram::FLASHRAM_SIZE,
+            );
+            netplay::receive_save(
+                netplay.as_mut().unwrap(),
+                "mpk",
+                &mut ui.saves.mempak.0,
+                device::controller::mempak::MEMPAK_SIZE * 4,
+            );
+        }
     }
 }
 
-pub fn write_rom_save(ui: &ui::Ui) {
+fn write_rom_save(ui: &ui::Ui) {
     let f = std::fs::File::create(ui.paths.romsave_file_path.clone()).unwrap();
     serde_json::to_writer(f, &ui.saves.romsave.0).unwrap();
 }
 
-pub fn write_saves(ui: &ui::Ui) {
-    if ui.saves.eeprom.1 {
-        write_save(ui, SaveTypes::Eeprom16k)
-    }
-    if ui.saves.sram.1 {
-        write_save(ui, SaveTypes::Sram)
-    }
-    if ui.saves.flash.1 {
-        write_save(ui, SaveTypes::Flash)
-    }
-    if ui.saves.mempak.1 {
-        write_save(ui, SaveTypes::Mempak)
-    }
-    if ui.saves.romsave.1 {
-        write_save(ui, SaveTypes::Romsave)
+pub fn write_saves(ui: &ui::Ui, netplay: &Option<netplay::Netplay>) {
+    if netplay.is_none() || netplay.as_ref().unwrap().player_number == 0 {
+        if ui.saves.eeprom.1 {
+            write_save(ui, SaveTypes::Eeprom16k)
+        }
+        if ui.saves.sram.1 {
+            write_save(ui, SaveTypes::Sram)
+        }
+        if ui.saves.flash.1 {
+            write_save(ui, SaveTypes::Flash)
+        }
+        if ui.saves.mempak.1 {
+            write_save(ui, SaveTypes::Mempak)
+        }
+        if ui.saves.romsave.1 && netplay.is_none() {
+            write_save(ui, SaveTypes::Romsave)
+        }
     }
 }
 
-pub fn write_save(ui: &ui::Ui, save_type: SaveTypes) {
+fn write_save(ui: &ui::Ui, save_type: SaveTypes) {
     let path: &std::path::Path;
     let data: &Vec<u8>;
     match save_type {

src/ui/video.rs

@@ -38,8 +38,9 @@ pub fn init(device: &mut device::Device, fullscreen: bool) {
         rdp_init(
             device.ui.window.as_ref().unwrap().raw() as *mut std::ffi::c_void,
             gfx_info,
-            fullscreen,
             device.ui.config.video.upscale,
+            device.ui.config.video.integer_scaling,
+            fullscreen,
         )
     }
 }
@@ -65,12 +66,6 @@ pub fn process_rdp_list() -> u64 {
     unsafe { rdp_process_commands() }
 }
 
-pub fn full_sync() {
-    unsafe {
-        rdp_full_sync();
-    }
-}
-
 pub fn draw_text(
     text: &str,
     canvas: &mut sdl2::render::Canvas<sdl2::video::Window>,

src/ui/vru.rs

@@ -4,18 +4,18 @@ use crate::ui;
 
 pub fn prompt_for_match(
     words: &[String],
-    window_notifier: &std::sync::mpsc::Sender<Vec<String>>,
-    word_index_notifier: &std::sync::mpsc::Receiver<String>,
+    window_notifier: &tokio::sync::mpsc::Sender<Vec<String>>,
+    word_index_receiver: &mut tokio::sync::mpsc::Receiver<String>,
     gui_ctx: &egui::Context,
 ) -> u16 {
     let mut dedup_words = words.to_owned();
     dedup_words.sort();
     dedup_words.dedup();
-    window_notifier.send(dedup_words).unwrap();
+    window_notifier.try_send(dedup_words).unwrap();
     gui_ctx.request_repaint(); // this is so the window pops up right away
-    let mut result = word_index_notifier.try_recv();
+    let mut result = word_index_receiver.try_recv();
     while result.is_err() {
-        result = word_index_notifier.try_recv();
+        result = word_index_receiver.try_recv();
         std::thread::sleep(std::time::Duration::from_secs_f64(1.0 / 60.0));
         ui::video::update_screen(); // so the OS doesn't complain about the game window being frozen
     }