public Camera2DScreen(Game game) {
super(game);
glGraphics = ((GLGame) game).getGLGraphics();
cannon = new Cannon(0, 0, 1, 1);
ball = new DynamicGameObject(0, 0, 0.2f, 0.2f);
targets = new ArrayList<GameObject>(NUM_TARGETS);
grid = new SpatialHashGrid(WORLD_WIDTH, WORLD_HEIGHT, 2.5f);
for (int i = 0; i < NUM_TARGETS; i++) {
GameObject target =
new GameObject(
(float) Math.random() * WORLD_WIDTH,
(float) Math.random() * WORLD_HEIGHT,
0.5f,
0.5f);
grid.insertStaticObject(target);
targets.add(target);
}
camera = new Camera2D(glGraphics, WORLD_WIDTH, WORLD_HEIGHT);
cannonVertices = new Vertices(glGraphics, 3, 0, false, false);
cannonVertices.setVertices(new float[] {-0.5f, -0.5f, 0.5f, 0.0f, -0.5f, 0.5f}, 0, 6);
ballVertices = new Vertices(glGraphics, 4, 6, false, false);
ballVertices.setVertices(
new float[] {-0.1f, -0.1f, 0.1f, -0.1f, 0.1f, 0.1f, -0.1f, 0.1f}, 0, 8);
ballVertices.setIndices(new short[] {0, 1, 2, 2, 3, 0}, 0, 6);
targetVertices = new Vertices(glGraphics, 4, 6, false, false);
targetVertices.setVertices(
new float[] {-0.25f, -0.25f, 0.25f, -0.25f, 0.25f, 0.25f, -0.25f, 0.25f}, 0, 8);
targetVertices.setIndices(new short[] {0, 1, 2, 2, 3, 0}, 0, 6);
}
@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;
}
}