Enhance blood stain mechanics: add dynamic blood surface generation and integrate blood stains into game rendering

units/bomb.py

@@ -71,14 +71,12 @@ class Timer(Bomb):
                     for victim in self.game.unit_positions.get((x, y), []):
                         if victim.id in self.game.units:
                             if victim.partial_move >= 0.5:
-                               print(f"Victim {victim.id} at {x}, {y} dies")
                                victim.die(score=score)
                                if score < 160:
                                    score *= 2                              
                     for victim in self.game.unit_positions_before.get((x, y), []):
                         if victim.id in self.game.units:
                             if victim.partial_move < 0.5:
-                                print(f"Victim {victim.id} at {x}, {y} dies")
                                 victim.die(score=score)
                                 if score < 160:
                                     score *= 2

units/rat.py

@@ -91,12 +91,18 @@ class Rat(Unit):
     def die(self, unit=None, score=10):
         """Handle rat death and spawn points."""
         target_unit = unit if unit else self
+        death_position = target_unit.position_before
+        
         # Use base class cleanup
         if target_unit.id in self.game.units:
             self.game.units.pop(target_unit.id)
-        # Rat-specific behavior: spawn points
-        self.game.spawn_unit(Point, target_unit.position_before, value=score)
         
+        # Rat-specific behavior: spawn points
+        self.game.spawn_unit(Point, death_position, value=score)
+        
+        # Add blood stain directly to background
+        self.game.add_blood_stain(death_position)
+
     def draw(self):
         start_perf = self.game.render_engine.get_perf_counter()
         direction = self.calculate_rat_direction()

units/unit.py

@@ -64,7 +64,7 @@ class Unit(ABC):
         """Handle collisions with other units. Default implementation does nothing."""
         pass
 
-    def die(self):
+    def die(self, score=None):
         """Remove unit from game and handle basic cleanup."""
         if self.id in self.game.units:
             self.game.units.pop(self.id)