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102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/**
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* Copyright (c) 2026 Dominic Masters
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*/
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#include "input/input.h"
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#include "assert/assert.h"
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#include "display/display.h"
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void inputUpdateSDL2(void) {
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#ifdef DUSK_INPUT_GAMEPAD
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INPUT.platform.controller = NULL;
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for(int32_t i = 0; i < SDL_NumJoysticks(); i++) {
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if(!SDL_IsGameController(i)) continue;
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INPUT.platform.controller = SDL_GameControllerOpen(i);
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if(INPUT.platform.controller) break;
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}
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#endif
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#ifdef DUSK_INPUT_KEYBOARD
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INPUT.platform.keyboardState = SDL_GetKeyboardState(NULL);
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#endif
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#ifdef DUSK_INPUT_POINTER
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int pointerX, pointerY;
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SDL_GetMouseState(&pointerX, &pointerY);
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int windowWidth, windowHeight;
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SDL_GetWindowSize(DISPLAY.window, &windowWidth, &windowHeight);
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INPUT.platform.mouseX = (float_t)pointerX / (float_t)windowWidth;
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INPUT.platform.mouseY = (float_t)pointerY / (float_t)windowHeight;
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INPUT.platform.scrollX = 0.0f;
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INPUT.platform.scrollY = 0.0f;
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#endif
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}
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float_t inputButtonGetValueSDL2(const inputbutton_t button) {
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switch(button.type) {
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#ifdef DUSK_INPUT_KEYBOARD
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case INPUT_BUTTON_TYPE_KEYBOARD: {
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return INPUT.platform.keyboardState[button.scancode] ? 1.0f : 0.0f;
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}
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#endif
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#ifdef DUSK_INPUT_POINTER
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case INPUT_BUTTON_TYPE_POINTER: {
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switch(button.pointerAxis) {
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case INPUT_POINTER_AXIS_X:
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return INPUT.platform.mouseX;
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case INPUT_POINTER_AXIS_Y:
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return INPUT.platform.mouseY;
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case INPUT_POINTER_AXIS_Z:
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return 0.0f; // Not supported in SDL2
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case INPUT_POINTER_AXIS_WHEEL_X:
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return INPUT.platform.scrollX;
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case INPUT_POINTER_AXIS_WHEEL_Y:
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return INPUT.platform.scrollY;
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default:
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assertUnreachable("Unknown pointer axis");
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return 0.0f;
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}
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}
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#endif
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#ifdef DUSK_INPUT_GAMEPAD
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case INPUT_BUTTON_TYPE_GAMEPAD: {
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if(SDL_GameControllerGetButton(
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INPUT.platform.controller, button.gpButton
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)) {
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return 1.0f;
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}
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return 0.0f;
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}
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case INPUT_BUTTON_TYPE_GAMEPAD_AXIS: {
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float_t value = 0.0f;
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Sint16 axis = SDL_GameControllerGetAxis(
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INPUT.platform.controller, button.gpAxis.axis
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);
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value = (float_t)axis / 32767.0f;
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if(!button.gpAxis.positive) value = -value;
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value = inputDeadzone(value, inputGetDeadzoneSDL2(button));
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return value;
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}
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#endif
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default: {
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assertUnreachable("Unknown input button type");
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return 0.0f;
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}
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}
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} |