@Override public void update(float deltaTime) { List<TouchEvent> touchEvents = game.getInput().getTouchEvents(); game.getInput().getKeyEvents(); int len = touchEvents.size(); for (int i = 0; i < len; i++) { TouchEvent event = touchEvents.get(i); camera.touchToWorld(touchPos.set(event.x, event.y)); cannon.angle = touchPos.sub(cannon.position).angle(); if (event.type == TouchEvent.TOUCH_UP) { float radians = cannon.angle * Vector2.TO_RADIANS; float ballSpeed = touchPos.len() * 2; ball.position.set(cannon.position); ball.velocity.x = FloatMath.cos(radians) * ballSpeed; ball.velocity.y = FloatMath.sin(radians) * ballSpeed; ball.bounds.lowerLeft.set(ball.position.x - 0.1f, ball.position.y - 0.1f); } } if (ball.velocity.x != 0 || ball.velocity.y != 0) { ball.velocity.add(gravity.x * deltaTime, gravity.y * deltaTime); ball.position.add(ball.velocity.x * deltaTime, ball.velocity.y * deltaTime); ball.bounds.lowerLeft.add(ball.velocity.x * deltaTime, ball.velocity.y * deltaTime); } List<GameObject> colliders = grid.getPotentialColliders(ball); len = colliders.size(); for (int i = 0; i < len; i++) { GameObject collider = colliders.get(i); if (OverlapTester.overlapRectangles(ball.bounds, collider.bounds)) { grid.removeObject(collider); targets.remove(collider); } } if (ball.position.y > 0) { camera.position.set(ball.position); camera.zoom = 1 + ball.position.y / WORLD_HEIGHT; } else { camera.position.set(WORLD_WIDTH / 2, WORLD_HEIGHT / 2); camera.zoom = 1; } }