HUD and Height Changes

Assets/_Project/Scripts/Simulation/Combat/EnemyAIMath.cs

@@ -35,6 +35,24 @@ namespace ProjectM.Simulation
             d.y = 0f;
             return math.lengthsq(d) <= range * range;
         }
+        /// <summary>
+        /// Projects a planar movement <paramref name="vel"/> onto a wall plane defined by <paramref name="surfaceNormal"/>
+        /// (collide-and-slide): removes the component of <paramref name="vel"/> that pushes into the surface so the
+        /// mover glances along the wall instead of stopping dead. Both inputs are flattened to the XZ plane (top-down).
+        /// Returns <paramref name="vel"/> unchanged when the normal is degenerate.
+        /// </summary>
+        public static float3 SlideVelocity(float3 vel, float3 surfaceNormal)
+        {
+            surfaceNormal.y = 0f;
+            float len = math.length(surfaceNormal);
+            if (len < 1e-6f)
+                return vel;
+            float3 n = surfaceNormal / len;
+            float3 slid = vel - math.dot(vel, n) * n;
+            slid.y = 0f;
+            return slid;
+        }
+
 
         /// <summary>
         /// Deterministic planar ring position around <paramref name="center"/> for spawn

Assets/_Project/Scripts/Simulation/World/WorldCollisionComponents.cs

@@ -0,0 +1,17 @@
+using Unity.Entities;
+
+namespace ProjectM.Simulation
+{
+    /// <summary>
+    /// Singleton holding the physics-filter mask of the static world-collision layer ("Environment"): the baked
+    /// boundary ring + landmark colliders the player CC sweeps. Baked from the GameObject layer at edit-time (see
+    /// WorldCollisionAuthoring) so server systems can build a <c>CollisionFilter</c> in Burst WITHOUT a managed
+    /// <c>LayerMask.NameToLayer</c> call or a hardcoded layer index. Read by <see cref="ProjectM.Server"/>'s
+    /// EnemyAISystem to sweep-test Husk movement against the environment only (never the player / other Husks).
+    /// </summary>
+    public struct WorldCollisionConfig : IComponentData
+    {
+        /// <summary>BelongsTo bitmask of the Environment physics layer (<c>1u &lt;&lt; layerIndex</c>).</summary>
+        public uint EnvironmentMask;
+    }
+}

Assets/_Project/Scripts/Simulation/World/WorldCollisionComponents.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 70c75b96478d39f43aca221c926c9561