Blast Valve 12

Blast Valve 12 adds manually operated blast doors, trapdoors, a Blast Valve and a custom-size bunker lift for Kiloton.

Build a bunker

• Dig a rectangular shaft. A 3×3 opening can use a 3×3 platform and a 3-block drop.
• Fill the opening with connected Blast Lift Platform Tiles. They must form a complete rectangle.
• Put radar, SAM launchers and other equipment on the platform. Place the Blast Shelter Controller on the rim, up to 12 blocks away horizontally. Right-click it to lower or raise the lift; this works while holding an item.
• For blast protection, place two rows of Horizontal Blast Doors on opposite sides of the opening at platform level +4. For a 3×3 opening, use a 2×3 row and a 1×3 row. These roof leaves slide into the opening. The lift can also be used without roof doors, but that leaves the shaft unsealed.

When a Kiloton radar tracks a missile predicted to impact within five seconds and 48 blocks of the platform, an armed Kiloton SAM can fire for up to three seconds. If no SAM is armed or an engagement does not begin, the lift lowers immediately. Otherwise, it lowers before impact. It stays down through impact and five seconds afterward, then restores the platform and equipment.

When the lift is lowered and both roof doors are closed, blocks inside the covered shaft are protected from Kiloton block destruction, including fully loaded thermonuclear blasts. The add-on does not stop the explosion itself; terrain outside the sealed shelter can still be destroyed. Blast Door 12, both trapdoors, the roof doors, Blast Valve and controller can be opened or closed by right-click, including with an item in hand. Blast locks override manual opening during a blast.

The Thermonuclear-Proof Block is individually indestructible by Kiloton blast damage at any warhead yield and crafts four blocks from eight obsidian and one netherite ingot.

Requirements: Minecraft 1.21.1, NeoForge 21.1 and Kiloton 1.3.x. Install this add-on on both the client and server.