In this section, we got our hands dirty by applying the different combinations of collision presets to the First Person Projectile blueprint to see how it interacts with the physics actors in our game world. By setting the Physics Body object response to Block, the Event Hit event node will be called. Also, an impulse will be created at the projectiles' location, resulting in a small push force applied to the physics actor the projectile collides with. By setting the Physics Body object response to Overlap, we can use the On Component Begin Overlap Event node to call different actions once the projectile overlaps with a physics actor. We just need to make sure that the physics actors in our level and our projectile have the Generate Overlap Events set to True. Lastly, we briefly discussed the results of when our projectile has the Physics Body object response set to Ignore. Like the name suggests, it ignores the object response, and no events are...