add recharge

generate_rivers.py

@@ -103,6 +103,17 @@ def build_rivermap(output_path="/home/bart/git/Ascent-of-Man/images/rivermap.png
         print(f"Saved preview to {preview_path}")
 
         # Build orthographic hex-tile minimap.png
+        water_threshold = 6
+        try:
+            with open("/home/bart/git/Ascent-of-Man/config/terrain_movement.yaml", "r") as yf:
+                for line in yf:
+                    if line.strip().startswith("water_height_threshold:"):
+                        val_str = line.split(":", 1)[1].split("#", 1)[0].strip()
+                        water_threshold = int(val_str)
+                        break
+        except Exception:
+            pass
+
         h_arr = np.array(Image.open("/home/bart/git/Ascent-of-Man/images/heightmap.jpg"))
         R = 8.0
         W = 3608
@@ -122,11 +133,11 @@ def build_rivermap(output_path="/home/bart/git/Ascent-of-Man/images/rivermap.png
 
                 px = min(3599, max(0, int(round(wx * SCALE_X))))
                 py = min(1499, max(0, int(round(wy * SCALE_Y))))
-                h = h_arr[1500 - 1 - py, px]
+                h = int(h_arr[1500 - 1 - py, px, 0]) if h_arr.ndim == 3 else int(h_arr[1500 - 1 - py, px])
                 tp = t_arr[1500 - 1 - py, px]
                 dist_pole = abs((wy / 108.22) - 0.5) * 2.0
 
-                if h <= 2:
+                if h < water_threshold:
                     color = (220, 235, 250) if dist_pole > 0.85 else (28, 95, 175) # Water (blue) / polar ice
                 elif h > 182 or (dist_pole > 0.80 and h > 20):
                     color = (245, 250, 255) # Snow (white) above 2500m