Designing an Advanced Game - Learning Unreal Engine iOS Game Development - page 149

enemyRed
I've added two rectangles in the scene to represent walls and gave them a wall tag. Then, I
started using OnComponentHit that is caused by the sphere component of the enemy
blueprint.
We check whether the enemy hit a wall tagged actor with the Actor Has Tag node, or an-
other enemy tagged component with the Component Has Tag node. If yes, then the en-
emy changes its movement direction by changing the velocity direction of the projectile
component and changing scale of sprite between 1 and -1 to emulate a flip.