//function to detect the collision with some specific objects (depending on the tags)
private void OnTriggerEnter(Collider other)
{
//disable the projectile object collided, detect using tag system
//if the collided object is a "Platform" tag object, make it disappeared
//remember to set "isTriggered" option for this Collider
if (other.gameObject.CompareTag("Platform"))
{
//due to I set the single platform object as the parent object of walls, we can't
//directly set the platform to invisible, since it will set the walls to invisible too
//so we have to change the MeshRenderer of the single platform
((MeshRenderer)other.gameObject.GetComponent("MeshRenderer")).enabled = false;
//Since for platform we have one triggered BoxCollider for the collision between projectile and the platform
// and one non-triggered BoxCollider for the physical interaction between player and platform.
//We have to disable both of them
BoxCollider[] bcs = (other.gameObject.GetComponents <BoxCollider>());
foreach (BoxCollider bc in bcs)
{
bc.enabled = false;
}
//destroy the projectile after collision with platform
Destroy(this.gameObject);
//call the OnDestroying(GameObject destroyedPlatform) function in the gameFlowManager to pass the destroyed platform to the gameFlowManager
gameFlowManager.OnDestroying(other.gameObject);
}
}