This week we are continuing where we left off by editing the collision system to call the OnCollisionEnter, OnCollisionStay, and OnCollisionExit functions that we wrote last week. This will lay the groundwork for many future features that require interaction between colliding objects.
Last week we wrote the code that will enable communication between objects when they collide. This communication can happen at three stages of a collision: when the collision occurs, every frame the collision is maintained, and when the collision ends. This week we are going to write a new component for our projectile that will remove it from the game when it collides with another object (so when collision first happens). It will be a simple component but will hopefully show you how to respond to collision events.
This week we are going to add a friend for the player. We’ll refractor the player creation code to reuse as much of it as possible and we’ll also create a new collision layer for the character and setup collisions between the player and his new friend.