This is a nuclear weapon addon for Create: Big Cannons (Minecraft 1.20.1 / Forge). It adds two nuclear artillery shells to Create Big Cannons, complete with a full nuclear detonation package — mushroom cloud, screen flash & shake, ray-traced craters, radioactive contamination and a nuclear-materials production line.
Features
Nuclear Shells
| Shell | Blast Radius (max ray distance) | Scorched-Earth Radius |
|---|---|---|
| Fission Nuclear Shell | 150 blocks | ~285 blocks |
| Fusion Thermonuclear Shell | 230 blocks | ~370 blocks |
Detonation
Mushroom cloud: multi-layer smoke plume + fireball glow driven by a Citadel model, sized and prolonged per shell type;
Screen flash: full-screen whiteout
Camera shake: angular camera shake
Ray-traced crater: the ray-casting crater generator carves a radial blast scar, leaving vitrified slag, charred logs/planks, scorched soil and irradiated dirt;
Radiation System
Radioactive blocks (atomic slag, fallout, irradiated dirt, uranium blocks…) irradiate entities standing on them;
Holding radiation: carrying radioactive items in your inventory, hand or armor continuously irradiates you;
Radiation zones: each blast leaves a persistent fallout zone (fission 5 min / fusion 10 min) that damages and debuffs anything inside;
Radiation effects: the Irradiated effect deals true damage and applies Hunger/Weakness/Nausea/Wither scaling with level; Radiation Resistance (from the anti-rad suit) grants immunity tiers;
Anti-radiation suit: 4-piece set; 1 piece immunizes weak sources, 3 pieces immunize strong ones;
Radioactive tooltips: weak sources show
[Radioactive]in yellow, strong sources show[Highly Radioactive]in red (localized);Mekanism integration: when Mekanism is installed, radiation is delegated to Mekanism's radiation system instead of stacking this mod's buffs.

