more destructibles, but this time barrels!

So for programming class we have to make a "barrel" that explodes when you damage it. It's also encouraged to have it fit the race track, but I wasn't really planning on having explodable objects in my race track so I'm going to make an exploding oil drum that smokes and then explodes after the player drives into it.

like those!!

for my turret I don't really know what to do so I'll just make a cannon turret thing