Add new game assets and update asset paths in code

tools/generate_textures.py

@@ -373,23 +373,32 @@ def _api_key() -> str:
 
 
 def generate_image(prompt: str, model: str, size: int,
-                   transparent: bool = False) -> Image.Image:
+                   transparent: bool = False,
+                   aspect_ratio: str = "1:1") -> Image.Image:
     """Call the OpenRouter image API and return the decoded PIL image.
 
-    Requests a square image at `size` px and decodes the base64 PNG/JPEG/WebP
-    bytes returned in `data[].b64_json`. The requested size is clamped to at
-    least GEN_SIZE because some models (e.g. seedream) reject small outputs;
-    callers downscale the result to MAX_DIM afterwards. When `transparent` is
-    true, the API is asked for a transparent background (PNG alpha).
+    Requests a square image at `size` px or a role-shaped image at the matching
+    resolution tier and decodes `data[].b64_json`. Seedream's square requests
+    retain the existing GEN_SIZE floor. When `transparent` is true, the API is
+    asked for a transparent PNG background.
     """
-    size = max(GEN_SIZE, int(size))
+    size = max(1, int(size))
+    if model == DEFAULT_IMAGE_MODEL:
+        size = max(GEN_SIZE, size)
     body = {
         "model": model,
         "prompt": prompt,
-        "size": f"{size}x{size}",
         "output_format": "png",
         "n": 1,
     }
+    if aspect_ratio == "1:1":
+        body["size"] = f"{size}x{size}"
+    else:
+        body["aspect_ratio"] = aspect_ratio
+        body["resolution"] = next(
+            (tier for limit, tier in ((512, "512"), (768, "768"), (1024, "1K"),
+                                      (1536, "1.5K"), (2048, "2K"), (4096, "4K"))
+             if size <= limit), "4K")
     if transparent:
         body["background"] = "transparent"
     req = urllib.request.Request(