TNT Logic - Realistic Explosion Physics : Realism Meets Ruin

Destruction, Reimagined

Vanilla Minecraft explosions are instant - one tick, and a sphere of blocks simply disappears. TNT Logic changes that completely. When an explosion occurs, affected blocks don't vanish. Instead, they lose structural support and start to fall, carrying everything above them down in a cascading, realistic collapse.

The result looks exactly like what you'd expect from real demolition: the base crumbles, the walls lean, and the roof caves in. Block by block. One after another.

How the Collapse Works

The mod hooks into the game's explosion event and replaces the standard block removal with a physics-based fall simulation. Here is the process:

1. Detonation: TNT detonates and marks all blocks within its blast radius as unstable.
2. Support Check: Each unstable block checks whether it still has valid support beneath it.
3. Physics Conversion: Unsupported blocks convert into falling block entities and begin to drop.
4. Chain Reaction: As they fall, neighboring blocks that relied on them for support are re-evaluated, triggering a reaction that spreads through the structure.
5. Impact: Falling blocks land, break, and drop their items just like sand or gravel would.

The bigger and taller the structure, the more dramatic the collapse. A single TNT at the base of a tower can bring the entire thing down.

Features

• Realistic structural collapse triggered by any explosion source.
• Chain reactions - falling blocks destabilize their neighbors.
• Works with TNT, creepers, beds in the Nether, respawn anchors in the Overworld, and mod-added explosions.

Performance

The collapse simulation runs on the server thread, calculating structural support in real time. For most builds, the experience is completely smooth and lag is imperceptible.

However, when a very large structure — think a massive stone castle or a densely packed city — collapses all at once, the simulation may cause brief lag spikes. Smaller, controlled demolitions are always smooth.

Tips

• Foundations: Place TNT at the base of a structure for the most dramatic full collapse.
• Directional Demolition: Use multiple TNT charges at strategic points to dictate the direction of a collapse.
• Server Management: On servers, consider limiting TNT chain sizes if you notice significant lag.
• Visuals: Pair with a shader pack — the dust and particle effects from collapsing blocks look incredible.