Tile Z is now hypotenused to 1 rather than stretching to have Z of 1.

editor/client/public/map/map.js

@@ -262,6 +262,13 @@
     return modelIndex;
   }
 
+  // Scales a mesh's stored [x, y, z] offset for preview, matching the
+  // Z scaling mapChunkLoaded() applies at runtime (chunk.meshOffsets[m][2]
+  // * WORLD_LAYER_HEIGHT) - x/y stay 1:1 since only Z is height-scaled.
+  function scaledMeshOffset(pos) {
+    return [pos[0], pos[1], pos[2] * ChunkTerrain.WORLD_LAYER_HEIGHT];
+  }
+
   // Resolves a chunk mesh entry's bare filename (e.g. "house_5_3.dmf") to
   // its model JSON by basename, mirroring find_model() in
   // tools/asset/chunk/__main__.py - the chunk JSON only ever stores a bare
@@ -330,7 +337,7 @@
       for(const m of neighborMeshes) {
         try {
           const resolved = await resolveModelForMeshFile(m.file);
-          if(resolved) models.push({ ...resolved, offset: m.pos });
+          if(resolved) models.push({ ...resolved, offset: scaledMeshOffset(m.pos) });
         } catch(e) {
           console.warn("Failed to load neighbor mesh preview", m.file, e);
         }
@@ -619,7 +626,7 @@
     for(const m of meshes) {
       try {
         const resolved = await resolveModelForMeshFile(m.file);
-        if(resolved) models.push({ ...resolved, offset: m.pos });
+        if(resolved) models.push({ ...resolved, offset: scaledMeshOffset(m.pos) });
       } catch(e) {
         console.warn("Failed to load mesh preview", m.file, e);
       }
@@ -637,13 +644,14 @@
       models: n.models,
     }));
 
+    const zLevelHeight = currentZLevel * ChunkTerrain.WORLD_LAYER_HEIGHT;
     mapRenderer.render({
-      target: [ChunkTerrain.CHUNK_WIDTH / 2, ChunkTerrain.CHUNK_HEIGHT / 2, currentZLevel],
+      target: [ChunkTerrain.CHUNK_WIDTH / 2, ChunkTerrain.CHUNK_HEIGHT / 2, zLevelHeight],
       worldH: zoomWorldH,
       terrain: terrainMesh ? { mesh: terrainMesh, texture: terrainTexture } : null,
       models,
       neighbors,
-      highlight: hoverTile ? { x: hoverTile.x, y: hoverTile.y, z: currentZLevel } : null,
+      highlight: hoverTile ? { x: hoverTile.x, y: hoverTile.y, z: zLevelHeight } : null,
     });
   }