Tracking projectiles are very easy to set up in UE4. We must simply provide the projectile movement component with information on how much the tracking will affect the projectiles during flight, and a target to track to. The first is simple, as I will be providing you with good starting values for any tracking behavior. The latter, on the other hand, will require that we create another custom collision channel and perform something called a line trace.
Let's first acquire the target we wish the projectiles to track to. We can do this by creating another object collision channel specifically for boss objects, we will then perform a line trace looking for objects that are part of this collision channel. If the line trace returns a successful collision, we have found a target for our projectiles.
We are going to have to add a couple more members to the ABMCharacter object as well. Navigate to BMCharacter.h now and add the following code to the...