Update asset loading to include transparent color and adjust white flash timing; enhance nuclear bomb scoring and gas unit die method

engine/graphics.py

@@ -21,7 +21,7 @@ class Graphics():
         self.assets = {}
         for file in os.listdir("assets/Rat"):
             if file.endswith(".png"):
-                self.assets[file[:-4]] = self.render_engine.load_image(f"Rat/{file}")
+                self.assets[file[:-4]] = self.render_engine.load_image(f"Rat/{file}", transparent_color=(128, 128, 128))
         
 
 

engine/sdl2.py

@@ -455,12 +455,12 @@ class GameWindow:
         current_time = sdl2.SDL_GetTicks()
         elapsed_time = current_time - self.white_flash_start_time
 
-        if elapsed_time < 1000:  # First 1 second   : full white
+        if elapsed_time < 500:  # First 500ms   : full white
             self.white_flash_opacity = 255
             return True
-        elif elapsed_time < 3000:  # Next 2 seconds: fade out
-            # Calculate fade based on remaining time (2000ms fade duration)
-            fade_progress = (elapsed_time - 1000) / 2000.0  # 0.0 to 1.0
+        elif elapsed_time < 2000:  # Next 2 seconds: fade out
+            # Calculate fade based on remaining time (1000ms fade duration)
+            fade_progress = (elapsed_time - 500) / 1000.0  # 0.0 to 1.0
             self.white_flash_opacity = int(255 * (1.0 - fade_progress))
             return True
         else:  # Effect is complete