wgt01: wire MAT_wgt01_* materials into blend

wgt01/wire_materials.py

@@ -0,0 +1,31 @@
+"""Create/refresh MAT_wgt01_* materials in wgt01.blend (run headless)."""
+import bpy, os
+SLOTS = ["cobble", "worn", "plaza", "sidewlk", "wall", "bridge", "gutter", "water"]
+BASE = os.path.dirname(bpy.data.filepath)
+
+for slot in SLOTS:
+    name = f"MAT_wgt01_{slot}"
+    mat = bpy.data.materials.get(name) or bpy.data.materials.new(name)
+    mat.use_nodes = True
+    nt = mat.node_tree; nt.nodes.clear()
+    out = nt.nodes.new("ShaderNodeOutputMaterial")
+    bsdf = nt.nodes.new("ShaderNodeBsdfPrincipled")
+    nt.links.new(bsdf.outputs["BSDF"], out.inputs["Surface"])
+    d = os.path.join(BASE, "textures", f"wgt01_{slot}_d.tga")
+    img = bpy.data.images.load(d, check_existing=True)
+    img.filepath = f"//textures/wgt01_{slot}_d.tga"
+    tex = nt.nodes.new("ShaderNodeTexImage"); tex.image = img
+    nt.links.new(tex.outputs["Color"], bsdf.inputs["Base Color"])
+    n = os.path.join(BASE, "textures", f"wgt01_{slot}_n.tga")
+    if os.path.exists(n):
+        nimg = bpy.data.images.load(n, check_existing=True)
+        nimg.filepath = f"//textures/wgt01_{slot}_n.tga"; nimg.colorspace_settings.name = "Non-Color"
+        ntex = nt.nodes.new("ShaderNodeTexImage"); ntex.image = nimg
+        nmap = nt.nodes.new("ShaderNodeNormalMap")
+        nt.links.new(ntex.outputs["Color"], nmap.inputs["Color"])
+        nt.links.new(nmap.outputs["Normal"], bsdf.inputs["Normal"])
+    # wet look: low roughness on ground slots
+    bsdf.inputs["Roughness"].default_value = 0.35 if slot in ("cobble", "gutter", "water") else 0.6
+
+bpy.ops.wm.save_mainfile()
+print("WIRED:", ", ".join(f"MAT_wgt01_{s}" for s in SLOTS))