@Override
public Array<IGameObject> getRenderObjects() {
renderObjects.clear();
Array<IGameObject> objects = gameWorld.getObjects();
for (int i = objects.size - 1; i >= 0; --i) {
IGameObject obj = objects.get(i);
// filter out objects that are not within the camera view
final float left = obj.getX();
final float bottom = obj.getY();
final float right = left + obj.getWidth();
final float top = bottom + obj.getHeight();
if (camera.frustum.pointInFrustum(left, bottom, 0) // bottom left within view or
|| camera.frustum.pointInFrustum(right, bottom, 0) // or bottom right within view
|| camera.frustum.pointInFrustum(right, top, 0) // or top right within view
|| camera.frustum.pointInFrustum(left, top, 0) // or bottom left within view
) {
renderObjects.add(obj);
}
}
// sort objects by y-coordinate
renderObjects.sort();
return renderObjects;
}
@Override
default int compareTo(IGameObject o) {
// first sort by z
int deltaZ = Integer.compare(getZ(), o.getZ());
if (deltaZ == 0) {
// if z is equal -> order by y
return Float.compare(getY(), o.getY());
}
return deltaZ;
}