The next sense we'll be implementing is Touch.cs, which triggers when the player tank entity is within a certain area near the AI entity. Our AI character has a box collider component and its IsTrigger flag is on.
We need to implement the OnTriggerEnter event, which will be called whenever another collider enters the collision area of this game object's collider. Since our tank entity also has a collider and rigid body components, collision events will be raised as soon as the colliders of the AI character and player tank collide.
Unity provides two other trigger events besides OnTriggerEnter: OnTriggerExit and OnTriggerStay. Use these to detect when a collider leaves a trigger, and to fire off every frame that a collider ...
