C60 for Melon Playground

C60 anti-aircraft artillery complex using UBR-281 armor-piercing shells

Notes:
• Cassette power for 4 shells (as in the original)
• The first working implementation of a fail-safe automatic cannon
• First, the bouncing charge explodes, after 20 cells it detonates, and the projectile goes to supersonic speed
• To shoot, you need to freeze the wheel at the barrel