| name | structural-physics |
| description | Structural validation and damage systems for Three.js building games. Use when implementing building stability (Fortnite/Rust/Valheim style), damage propagation, cascading collapse, or realistic physics simulation. Supports arcade, heuristic, and realistic physics modes. |
Structural Physics
Stability validation and damage systems for building mechanics.
Quick Start
import { HeuristicValidator } from './scripts/heuristic-validator.js';
import { DamageSystem } from './scripts/damage-propagation.js';
// Rust/Valheim style stability
const validator = new HeuristicValidator({ mode: 'heuristic' });
validator.addPiece(piece);
const result = validator.validatePlacement(newPiece);
// result: { valid: true, stability: 0.85, supports: [...] }
// Damage and collapse
const damage = new DamageSystem(validator);
damage.applyDamage(piece, 50, 'physical');
damage.applyExplosiveDamage(position, 100, 10); // radius damage
Reference
See references/structural-physics-advanced.md for:
- Physics mode comparison (arcade vs heuristic vs realistic)
- Material properties and decay rates
- Damage state thresholds
- Cascade mechanics
Scripts
scripts/heuristic-validator.js- Fast validation (Fortnite/Rust/Valheim modes)scripts/stability-optimizer.js- Caching and batch updates for large structuresscripts/damage-propagation.js- Damage states, fire spread, cascading collapsescripts/physics-engine-lite.js- Optional realistic stress/strain simulation
Physics Modes
- Arcade (Fortnite): Connectivity only, instant collapse, best for combat
- Heuristic (Rust/Valheim): Stability %, predictable rules, best for survival
- Realistic: Full stress/strain, computationally expensive, best for engineering sims