/**
* Apply force on joint, pushing the attached entity out of place.
*
* @param attached Attached component of entity to push
* @param rotation Direction of force
* @param force strength of force (don't factor in delta).
*/
public void push(final Attached attached, float rotation, float force) {
vTmp.set(force, 0)
.rotate(rotation)
.add(attached.slackX, attached.slackY)
.clamp(0f, attached.maxSlack);
attached.slackX = vTmp.x;
attached.slackY = vTmp.y;
}
/**
* Slack, like weapon recoil on the joint.
*
* @param attached
*/
protected void updateSlack(final Attached attached) {
float len = vTmp.set(attached.slackX, attached.slackY).len() - world.delta * attached.tension;
if (len > 0) {
vTmp.nor().scl(len);
} else {
vTmp.set(0, 0);
}
attached.slackX = vTmp.x;
attached.slackY = vTmp.y;
}