firing.js

GameEngineClass = Class.extend({

	move_dir: new Vec2(0,0),
	dirVec: new Vec2(0,0),

	gPlayer0: {
		pos: {
			x: 100,
			y: 100
		},

		walkSpeed: 1,
		mpPhysBody: new BodyDef()
	},

	//-----------------------------
	setup: function () {
		gInputEngine.setup();
	},

	update: function () {
		if (gInputEngine.actions['move-up']) {
			gGameEngine.move_dir.y -= 1;
		}
		if (gInputEngine.actions['move-down']) {
			gGameEngine.move_dir.y += 1;
		}
		if (gInputEngine.actions['move-left']) {
			gGameEngine.move_dir.x -= 1;
		}
		if (gInputEngine.actions['move-right']) {
			gGameEngine.move_dir.x += 1;
		}

		if (gGameEngine.move_dir.LengthSquared()) {
			gGameEngine.move_dir.Normalize();
			gGameEngine.move_dir.Multiply(gGameEngine.gPlayer0.walkSpeed);
		}

		gGameEngine.gPlayer0.mpPhysBody.setLinearVelocity(gGameEngine.move_dir.x, gGameEngine.move_dir.y);

		if (gInputEngine.actions.fire0 || gInputEngine.actions.fire1) {
			var playerInScreenSpace = {
				x: gRenderEngine.getScreenPosition(this.gPlayer0.pos).x,
				y: gRenderEngine.getScreenPosition(this.gPlayer0.pos).y
			};

			dirVec.x = gInputEngine.mouse.x - playerInScreenSpace.x;
			dirVec.y = gInputEngine.mouse.y - playerInScreenSpace.y;

			dirVec.normalize();
		}

		if (gInputEngine.state('fire-up')) {
			gGameEngine.dirVec.y--;
		}
		else if (gInputEngine.state('fire-down')) {
			gGameEngine.dirVec.y++;
		}
		if (gInputEngine.state('fire-left')) {
			gGameEngine.dirVec.x--;
		}
		else if (gInputEngine.state('fire-right')) {
			gGameEngine.dirVec.x++;
		}
	}

});

gGameEngine = new GameEngineClass();