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DR-042 Phase C (legibility, part 2): walls block enemies (C5) — restore the fortress fantasy

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Player-built structures now physically block enemies (husks walked straight through walls before). Dedicated
"Structure" physics layer (slot 9) so the player passes its own walls while enemies are stopped:

- New WorldCollisionConfig.StructureMask, baked from the "Structure" layer in WorldCollisionAuthoring (mirrors
  EnvironmentMask). EnemyAISystem ORs it into the movement sweep filter (CollidesWith = envMask | structMask) —
  no new system, same 1-2 SphereCasts per enemy.
- Wall/Turret/Pylon prefabs get a cell-sized BoxCollider on the Structure layer (Wall's existing one relayered).
- Physics matrix: Default x Structure unchecked, so the kinematic player CC (Default) passes its own walls while
  the enemy's explicit cast still hits them. Despawn frees collision for free (collider dies with the entity).

Play-verified baked filters: StructMask=512; structure colliders BelongsTo=512, CollidesWith=0xFFFFFFFE
(includes Environment for the enemy cast, EXCLUDES bit 0 so the player passes). 389/389 EditMode, no exceptions.
Server-only/static colliders -> deterministic, no client divergence. SaveData stays v5.

Phase C complete (C5-C7). A visual fun-gate (husk stops at wall, player walks through) is the operator's eyes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Luis Gonzalez
2026-06-25 21:26:56 -07:00
parent 419debad74
commit bd8458853b
8 changed files with 78 additions and 12 deletions
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Assets/_Project/Scripts/Server/Combat/EnemyAISystem.cs
+3 -2
View File
@@ -100,8 +100,9 @@ namespace ProjectM.Server
var ecb = new EntityCommandBuffer(Allocator.Temp);
bool havePhysics = SystemAPI.TryGetSingleton<PhysicsWorldSingleton>(out var physics);
uint envMask = SystemAPI.TryGetSingleton<WorldCollisionConfig>(out var worldCol) ? worldCol.EnvironmentMask : 0u;
var envFilter = new CollisionFilter { BelongsTo = ~0u, CollidesWith = envMask, GroupIndex = 0 };
bool sweep = havePhysics && envMask != 0u;
uint sweepMask = envMask | worldCol.StructureMask; // DR-042 C5: also collide enemies against player-built walls
var envFilter = new CollisionFilter { BelongsTo = ~0u, CollidesWith = sweepMask, GroupIndex = 0 };
bool sweep = havePhysics && sweepMask != 0u;
const float SweepRadius = 0.5f; // collide-and-slide sphere radius for Husk movement
foreach (var (xform, stats, cooldown, knockback, windup, region) in