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Add TouchCrossPad widget which actually can do diagonals reasonably.

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Henrik Rydgard
2013-03-30 16:48:02 +01:00
parent 1f34f8ff60
commit faf8b260ed
2 changed files with 92 additions and 0 deletions
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ui/virtual_input.cpp
+62
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@@ -1,4 +1,5 @@
#include <stdio.h>
#include "base/logging.h"
#include "gfx_es2/draw_buffer.h"
#include "gfx/texture_atlas.h"
#include "input/input_state.h"
@@ -45,6 +46,67 @@ void TouchButton::draw(DrawBuffer &db, uint32_t color, uint32_t colorOverlay)
db.DrawImageRotated(overlayImageIndex_, x_ + w_*scale_/2, y_ + h_*scale_/2, scale, rotationAngle_, colorOverlay);
}
TouchCrossPad::TouchCrossPad(const Atlas *atlas, int arrowIndex, int overlayIndex)
: atlas_(atlas), arrowIndex_(arrowIndex), overlayIndex_(overlayIndex)
{
}
void TouchCrossPad::update(InputState &input_state)
{
float stick_size_ = radius_ * 2;
float inv_stick_size = 1.0f / (stick_size_ * scale_);
const float deadzone = 0.17f;
bool all_up = true;
input_state.pad_buttons &= ~(PAD_BUTTON_LEFT | PAD_BUTTON_RIGHT | PAD_BUTTON_UP | PAD_BUTTON_DOWN);
for (int i = 0; i < MAX_POINTERS; i++) {
if (input_state.pointer_down[i]) {
float dx = (input_state.pointer_x[i] - x_) * inv_stick_size;
float dy = (input_state.pointer_y[i] - y_) * inv_stick_size;
float rad = sqrtf(dx*dx+dy*dy);
if (rad < deadzone || rad > 1.0f)
continue;
all_up = false;
if (dx == 0 && dy == 0)
continue;
int direction = (int)(floorf((atan2f(dy, dx) / (2 * M_PI) * 8) + 0.5f)) & 7;
switch (direction) {
case 0: input_state.pad_buttons |= PAD_BUTTON_RIGHT; break;
case 1: input_state.pad_buttons |= PAD_BUTTON_RIGHT | PAD_BUTTON_DOWN; break;
case 2: input_state.pad_buttons |= PAD_BUTTON_DOWN; break;
case 3: input_state.pad_buttons |= PAD_BUTTON_DOWN | PAD_BUTTON_LEFT; break;
case 4: input_state.pad_buttons |= PAD_BUTTON_LEFT; break;
case 5: input_state.pad_buttons |= PAD_BUTTON_UP | PAD_BUTTON_LEFT; break;
case 6: input_state.pad_buttons |= PAD_BUTTON_UP; break;
case 7: input_state.pad_buttons |= PAD_BUTTON_UP | PAD_BUTTON_RIGHT; break;
}
}
}
down_ = input_state.pad_buttons & (PAD_BUTTON_LEFT | PAD_BUTTON_RIGHT | PAD_BUTTON_UP | PAD_BUTTON_DOWN);
}
void TouchCrossPad::draw(DrawBuffer &db, uint32_t color, uint32_t colorOverlay)
{
static const float xoff[4] = {1, 0, -1, 0};
static const float yoff[4] = {0, 1, 0, -1};
static const int dir[4] = {PAD_BUTTON_RIGHT, PAD_BUTTON_DOWN, PAD_BUTTON_LEFT, PAD_BUTTON_UP};
for (int i = 0; i < 4; i++) {
float x = x_ + xoff[i] * scale_ * radius_;
float y = y_ + yoff[i] * scale_ * radius_;
float angle = i * M_PI / 2;
float imgScale = (down_ & dir[i]) ? scale_ * 2 : scale_;
db.DrawImageRotated(arrowIndex_, x, y, imgScale, angle + PI, color, false);
if (overlayIndex_ != -1)
db.DrawImageRotated(overlayIndex_, x, y, imgScale, angle + PI, colorOverlay);
}
}
TouchStick::TouchStick(const Atlas *atlas, int bgImageIndex, int stickImageIndex, int stick)
: atlas_(atlas), bgImageIndex_(bgImageIndex), stickImageIndex_(stickImageIndex), stick_(stick)
{