void OnTriggerEnter2D(Collider2D other)
{
/* When FootSteps meets the collider, will code be executed.
* Freezes FootSteps, which means that sprites are deactivated.
* TutorialSceneController is being called and stone puzzle is activated.
* Destroys Footstep GameObject.
* Destroys itself.
*/
FootStepsScript controller = other.GetComponent <FootStepsScript>();
if (controller != null)
{
controller.freeze();
ctrl.setActive();
Destroy(controller);
Destroy(this);
}
}
