var KEY = { D: 68, W: 87, A: 65, S:83, RIGHT:39, UP:38, LEFT:37, DOWN:40, Q:81 };
var input = {
	right: false,
	up: false,
	left: false,
	down: false,
	quit: false
};

function press(evt) {
	var code = evt.keyCode;
	switch(code) {
		case KEY.RIGHT:
		case KEY.D: input.right = true; break;
		
		case KEY.UP:
		case KEY.W: input.up = true; break;
		
		case KEY.LEFT:
		case KEY.A: input.left = true; break;
		
		case KEY.DOWN: 
		case KEY.S: input.down = true; break;
		
		case KEY.Q: input.quit = true; break;
	}
}

function release(evt) {
	var code = evt.keyCode;
	switch(code) {
		case KEY.RIGHT:
		case KEY.D: input.right = false; break;
		
		case KEY.UP:
		case KEY.W: input.up = false; break;
		
		case KEY.LEFT:
		case KEY.A: input.left = false; break;
		
		case KEY.DOWN:
		case KEY.S: input.down = false; break;
		
		case KEY.Q: break;
		
		default: trace('unrecognized key code: ' +code); break;
	}
}