Level Editor
OBJ Export — Three Fixes
- map_Kd lines in the MTL (user-reported bug)
The MTL file only contained newmtl, Kd, Ka, Ks, Ns, d — no map_Kd line, so renderers that rely on it (Raylib, others) showed no texture. Fix: ExportObjOptions now carries a texture_paths map (texture name → absolute file path) and an optional copy_textures flag. In OnExportOBJ, the map is populated from g_projectSettings.textures before calling the exporter. ObjWriter stores a mat_to_tex map built at triangle-add time. write_mtl now emits map_Kd <path> for every material that has a resolved path. When copy_textures is true, the files are copied into a textures/ subfolder next to the OBJ and the MTL references them with a relative path.
- Duplicate materials
Every texture previously produced three MTL entries: FLOOR_X, CEIL_X, WALL_X. A map with ten unique textures generated thirty material slots in Blender. The fix removes the prefix entirely — the material name is now the texture name itself. Floor, ceiling, and wall surfaces that share the same texture automatically share one MTL entry.