Emil
0d54d987ac
Explosions: - trigger_explosion(x, y, radius, damage) in Game - Destroys non-static solids, ignites empty cells, pressure spike - Knockback to entities (velocity away from center + upward pop) - Particle burst on explosion (fire + smoke + debris) Particle system: - ParticleManager in src/physics/particle.rs (capacity 2000) - CPU-side: position, velocity, life, color, gravity, size - spawn_burst() for radial bursts, individual spawn() for ambient - Rendered as third draw call in graphics.rs (is_ui: 2 in shader) - ParticleInstance = ColorInstance compatible (12 bytes) - upload_particles() via GpuRenderer trait - Ambient: fire sparks, lava bubbles — scanned around player Electricity: - chunk.electricity: Vec<u8> (4KB/chunk) — current strength 0-255 - Material.conductive + conductivity fields (water = conductive) - electricity_step() in CA: propagates current through conductive neighbors, decays over time, skips non-conductive cells - cells_swap swaps electricity, serialization saves/loads it Structural integrity: - Material.structural: bool (stone, wood = true) - structural_step() in CA (every 30 ticks, infinite mode only): checks if structural cells have support (below, below-left, below-right) converts unsupported to Sand (falls) - Only active in infinite mode to avoid breaking test grids Graphics shader: is_ui==2 branch renders particles in world-space All 185 tests + 14 scenarios pass. 143 FPS benchmark.
