Some minor cleanup.

src/projectile.py

@@ -10,21 +10,21 @@ class Projectile:
         self.damage = 5  # All projectiles do same damage for now
         self.range = 12  # Maximum travel distance in tiles
         self.start_x = start_x
-        
+
     def update(self):
         """Update projectile position and check if it should still exist"""
         if not self.isActive:
             return False
-            
+
         self.x += self.direction * self.speed
-        
+
         # Check if projectile has gone too far
         if abs(self.x - self.start_x) > self.range:
             self.isActive = False
             return False
-            
+
         return True
-        
+
     def hit_enemy(self, enemy):
         """Handle hitting an enemy"""
         enemy.take_damage(self.damage)