Release Healer Man 0.1.7

src/scene/dungeonLineOfSight.ts

@@ -0,0 +1,60 @@
+import { interactionGroups } from "@react-three/rapier";
+import type {
+  QueryFilterFlags,
+  Ray,
+  Vector,
+  World,
+} from "@dimforge/rapier3d-compat";
+
+interface RapierApi {
+  readonly Ray: new (origin: Vector, direction: Vector) => Ray;
+  readonly QueryFilterFlags: {
+    readonly EXCLUDE_DYNAMIC: QueryFilterFlags;
+    readonly EXCLUDE_KINEMATIC: QueryFilterFlags;
+  };
+}
+
+type WorldPosition = readonly [number, number, number];
+
+export const DUNGEON_LINE_OF_SIGHT_GROUP = 15;
+export const DUNGEON_PHYSICAL_COLLISION_GROUPS = interactionGroups(0);
+export const DUNGEON_SIGHT_BLOCKER_COLLISION_GROUPS = interactionGroups(DUNGEON_LINE_OF_SIGHT_GROUP);
+export const DUNGEON_WALL_COLLISION_GROUPS = interactionGroups([0, DUNGEON_LINE_OF_SIGHT_GROUP]);
+export const DUNGEON_SIGHT_QUERY_GROUPS = interactionGroups(
+  DUNGEON_LINE_OF_SIGHT_GROUP,
+  DUNGEON_LINE_OF_SIGHT_GROUP,
+);
+
+const ACTOR_SIGHT_HEIGHT = 1.05;
+const TARGET_MARGIN = 0.08;
+
+/**
+ * Checks only the dedicated wall/pillar collision layer. Walkable terrain and
+ * ceilings remain physical, but never participate in combat visibility.
+ */
+export function hasDungeonLineOfSight(
+  rapier: RapierApi,
+  world: World,
+  start: WorldPosition,
+  end: WorldPosition,
+): boolean {
+  const dx = end[0] - start[0];
+  const dy = end[1] - start[1];
+  const dz = end[2] - start[2];
+  const distance = Math.hypot(dx, dy, dz);
+  if (!Number.isFinite(distance)) return false;
+  if (distance <= TARGET_MARGIN) return true;
+
+  const ray = new rapier.Ray(
+    { x: start[0], y: start[1] + ACTOR_SIGHT_HEIGHT, z: start[2] },
+    { x: dx / distance, y: dy / distance, z: dz / distance },
+  );
+  const hit = world.castRay(
+    ray,
+    distance,
+    true,
+    rapier.QueryFilterFlags.EXCLUDE_DYNAMIC | rapier.QueryFilterFlags.EXCLUDE_KINEMATIC,
+    DUNGEON_SIGHT_QUERY_GROUPS,
+  );
+  return !hit || hit.timeOfImpact >= distance - TARGET_MARGIN;
+}