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js/mechanical_shape_bridge.js

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+"use strict";
+
+// Layer: physics/mechanical-shape-bridge
+// Single read-only facade for mechanical shape/footprint queries.  It keeps
+// world, placement, and renderer code from binding directly to the body solver.
+(function (global) {
+  function mech() { return global.TarinaiMechanicalSystem || null; }
+
+  function isMechanicalType(itemOrType) { return Boolean(mech()?.isMechanicalType?.(itemOrType)); }
+  function worldSegments(item) { return mech()?.worldSegments?.(item) || []; }
+  function obstacleRects(item) { return mech()?.obstacleRects?.(item) || []; }
+  function placementRects(item) { return mech()?.placementRects?.(item) || obstacleRects(item); }
+  function poisonHazardRects(item) { return mech()?.poisonHazardRects?.(item) || []; }
+  function boundsAabb(item) { return mech()?.boundsAabb?.(item) || null; }
+  function hazardAabb(item) { return mech()?.hazardAabb?.(item) || null; }
+  function extent(item) { return mech()?.extent?.(item) || 0; }
+  function reach(item) { return mech()?.reach?.(item) || extent(item); }
+  function hitTest(item, x, y, worldRef, opts = {}) { return mech()?.hitTest?.(item, x, y, worldRef, opts) || { hit: false, distance: Infinity }; }
+
+  global.TarinaiMechanicalShapeSystem = Object.freeze({
+    isMechanicalType,
+    worldSegments,
+    obstacleRects,
+    placementRects,
+    poisonHazardRects,
+    boundsAabb,
+    hazardAabb,
+    extent,
+    reach,
+    hitTest,
+  });
+})(typeof window !== "undefined" ? window : globalThis);