kayjaydee
cd5d0bedd3
Adds com.mythlane.chainlightning.chain package with 7 types (Vec3, ChainEntity, EntitySource, RayCaster, ChainParameters, ChainHit, ChainResolver). Algorithm: ray-cast primary target then BFS hops with distanceSquared closest-neighbor selection, deterministic lexicographic tie-breaker on entity id, max 5 targets, 8-block radius, damage curve [8,6,4,3,2]. Strict no-Hytale-imports boundary — runtime adapters land in Phase 3. JUnit 5 suite: 25 tests green (Vec3 5 + ChainParameters 10 + ChainResolver 10). All 10 mandatory cases covered (no primary, primary-only, full chain, overflow, out-of-radius, no-double-hit, closest, tie-breaker determinism, dead entity, custom maxTargets).