tools

wgt01/generator/tiles.py

@@ -32,6 +32,28 @@ COLORS = {
 }
 CURB = "MAT_curb_dark_stone"
 
+# NWN needs a real texture (bitmap) per trimesh; material name -> texture resref
+# (<=16 chars, prefix eats 6). make_mdl.py writes a solid-colour .tga per entry.
+TEXTURES = {
+    "MAT_wet_cobble_dark":   "twu01_wcob",
+    "MAT_cobble_patch":      "twu01_cpat",
+    "MAT_plaza_slab":        "twu01_plaz",
+    "MAT_sidewalk_stone":    "twu01_swlk",
+    "MAT_curb_dark_stone":   "twu01_curb",
+    "MAT_canal_black_water": "twu01_watr",
+    "MAT_void_black":        "twu01_void",
+    "MAT_ramp_stone":        "twu01_ramp",
+    "MAT_drain_iron":        "twu01_iron",
+    "MAT_foundation_pad":    "twu01_fnd",
+    "MAT_debug_walkmesh":    "twu01_dwlk",
+    "MAT_debug_blocker":     "twu01_dblk",
+}
+
+
+def texname(mat):
+    return TEXTURES.get(mat, "twu01_wcob")
+
+
 F, R, C, RP, MX = "FLAT", "RAISED", "CANAL", "RAMP", "MIXED"
 
 
@@ -281,6 +303,32 @@ def wok_quads(spec):
     return [(_rect(-5, 5, -5, 5, 0.0), True)]
 
 
+# --- visible mesh: subdivided 10x10 plane, faces tagged by material ----------
+# Same source as build.py's build_vis so the Blender preview and the exported
+# .mdl never drift. Faces are quads here; make_mdl.py triangulates on emit.
+
+def vis_geometry(spec):
+    """Return (verts, faces): 100-quad plane. faces = (a, b, c, d, matname)."""
+    n, step = 10, 1.0
+    paint = make_paint(spec)
+    verts, vidx = [], {}
+
+    def vi(i, j):
+        if (i, j) not in vidx:
+            x, y = -HALF + i * step, -HALF + j * step
+            vidx[(i, j)] = len(verts)
+            verts.append((x, y, height(spec, x, y)))
+        return vidx[(i, j)]
+
+    faces = []
+    for i in range(n):
+        for j in range(n):
+            cx, cy = -HALF + (i + 0.5) * step, -HALF + (j + 0.5) * step
+            faces.append((vi(i, j), vi(i + 1, j), vi(i + 1, j + 1), vi(i, j + 1),
+                          paint(cx, cy)))
+    return verts, faces
+
+
 # --- NWN .set mapping (AGENTS.md §4, §7) -------------------------------------
 # Minimal, deliberate vocabulary (AGENTS.md §2.1: every terrain pairing multiplies
 # tile count). Ground tiles all share 'cobble' so they interconnect freely