Method Update

src/input.cpp:111–175

}

void Input::Update() {
	wait_input = false; // clear each frame

	source->Update();
	auto& pressed_buttons = source->GetPressedButtons();

	// Check button states
	for (unsigned i = 0; i < BUTTON_COUNT; ++i) {
		bool pressed = pressed_buttons[i];
		UpdateButton(i, pressed);
	}

	auto& directions = source->GetDirectionMappings();

	// Press time for directional buttons, the less they have been pressed, the higher their priority will be
	int dirpress[Direction::NUM_DIRECTIONS] = {};

	// Get max pressed time for each directional button
	for (auto& dm: directions) {
		if (dirpress[dm.first] < press_time[dm.second]) {
			dirpress[dm.first] = press_time[dm.second];
		};
	}

	// Calculate diagonal directions pressed time by dir4 combinations
	dirpress[Direction::DOWNLEFT] += (dirpress[Direction::DOWN] > 0 && dirpress[Direction::LEFT] > 0) ? dirpress[Direction::DOWN] + dirpress[Direction::LEFT] : 0;
	dirpress[Direction::DOWNRIGHT] += (dirpress[Direction::DOWN] > 0 && dirpress[Direction::RIGHT] > 0) ? dirpress[Direction::DOWN] + dirpress[Direction::RIGHT] : 0;
	dirpress[Direction::UPLEFT] += (dirpress[Direction::UP] > 0 && dirpress[Direction::LEFT] > 0) ? dirpress[Direction::UP] + dirpress[Direction::LEFT] : 0;
	dirpress[Direction::UPRIGHT] += (dirpress[Direction::UP] > 0 && dirpress[Direction::RIGHT] > 0) ? dirpress[Direction::UP] + dirpress[Direction::RIGHT] : 0;

	dir4 = Direction::NONE;
	dir8 = Direction::NONE;

	// Check if no opposed keys are being pressed at the same time
	if (!(dirpress[Direction::DOWN] > 0 && dirpress[Direction::UP] > 0) && !(dirpress[Direction::LEFT] > 0 && dirpress[Direction::RIGHT] > 0)) {

		// Get dir4 by the with lowest press time (besides 0 frames)
		int min_press_time = 0;
		for (int i = 2; i <= 8; i += 2) {
			if (dirpress[i] > 0) {
				if (min_press_time == 0 || dirpress[i] < min_press_time) {
					dir4 = i;
					min_press_time = dirpress[i];
				}
			}
		}

		// Dir8 will be at least equal to Dir4
		dir8 = dir4;

		// Check diagonal directions (There is a priority order)
		if		(dirpress[Direction::UPRIGHT] > 0)	dir8 = Direction::UPRIGHT;
		else if (dirpress[Direction::UPLEFT] > 0)	dir8 = Direction::UPLEFT;
		else if (dirpress[Direction::DOWNRIGHT] > 0)	dir8 = Direction::DOWNRIGHT;
		else if (dirpress[Direction::DOWNLEFT] > 0)	dir8 = Direction::DOWNLEFT;
	}

	// Determine pressed & released keys from raw keystate