Don't clamp to a circle in the virtual stick.

ui/virtual_input.cpp

@@ -130,12 +130,15 @@ void TouchStick::update(InputState &input_state)
 			if (!dragging_[i])
 				goto skip;
 
-			// Clamp to a circle
-			float len = sqrtf(dx * dx + dy * dy);
-			if (len > 1.0f) {
-				dx /= len;
-				dy /= len;
-			}
+			// Do not clamp to a circle! The PSP has nearly square range!
+
+			// Old code to clamp to a circle
+			// float len = sqrtf(dx * dx + dy * dy);
+			// if (len > 1.0f) {
+			//	dx /= len;
+			//	dy /= len;
+			//}
+
 			if (stick_ == 0) {
 				input_state.pad_lstick_x = dx;
 				input_state.pad_lstick_y = -dy;