public Vector2d getForceFor(MovingEntity be) {
Vector2d currentVector = be.getCurrentVelocity();
double force = (1 - m_ForceScalar) / 25;
if (m_ForceScalar > 1) force /= 5;
force /= be.getMass();
currentVector.scale(force * -1);
return currentVector;
}
// ----------------------------- Update -----------------------------------
//
// updates the ball physics, tests for any collisions and adjusts
// the ball's velocity accordingly
// ------------------------------------------------------------------------
public void update(float tpf) {
// keep a record of the old position so the goal::scored method
// can utilize it for goal testing
if (position != null) {
oldPos.cloneVec(position);
}
// Test for collisions
testCollisionWithWalls(pitchBoundary);
// Simulate Params.Instance().Friction. Make sure the speed is positive
// first though
double friction = Params.Instance().Friction;
// println (velocity)
// println("LengthSq" + velocity.LengthSq() +" friction " + friction)
if (velocity.LengthSq() > friction * friction) {
velocity = velocity.plus(Vec2DNormalize(velocity).multiply(friction));
// println (velocity)
position = position.plus(velocity.multiply(tpf));
// println (position)
// update heading
heading = Vec2DNormalize(velocity);
}
super.update(tpf);
}
/**
* Renders the given entity
*
* @param camera Camera which is used to render the entity
*/
@Override
public void render(Camera camera, float delta) {
super.render(camera, delta);
if (Gdx.input.isTouched()) {
Vector3 touchPos = new Vector3(Gdx.input.getX(), Gdx.input.getY(), 0);
camera.unproject(touchPos);
setDestination(new Vector2(touchPos.x - 24 / 2, touchPos.y - 24 / 2));
}
setHeading(new Vector2(destination).sub(position).nor());
}