enemies are hitted correctly

This is playable completely... now I will add a menu at start and pause etc... but game can be played :)

bullets.py

@@ -1,3 +1,5 @@
+from math import sqrt
+
 class Bullet():
 	def __init__(self, plus_x, plus_y, x, y):
 		self.x = x
@@ -11,6 +13,10 @@ def __init__(self, plus_x, plus_y, x, y):
 		self.correcture = 0
 		self.color = (50,200,0)
 
+	def distance_to(self, target):
+		vector = (self.x - target.x, self.y - target.y)
+		return abs(sqrt(vector[0]*vector[0]+vector[1]*vector[1]))
+
 	def move(self):
 		self.x += self.x_speed
 		self.y += self.y_speed

player.py

@@ -33,16 +33,14 @@ def shoot(self, x, y):
         self.bullets.append(bullets.Bullet(-(self.top_x*self.bul_c), -(self.top_y*self.bul_c), x+(self.top_x*self.top_c), y+(self.top_y*self.top_c)))
 
     def check_enemy_hit(self, enemy):
-        bullets_to_remove = []
         death = False
         for idx, b in enumerate(self.bullets):
             if b.x > self.game.screen_x+900  or b.x < -900 or b.y > self.game.screen_y +900 or b.y < -900:
                 del self.bullets[idx]
                 next
-            elif b.x > enemy.x and b.x < enemy.x + enemy.width:
-                if b.y > enemy.y and b.y < enemy.y + enemy.height:
-                    death = enemy.register_hit()
-                    del self.bullets[idx]
+            elif b.distance_to(enemy) < 20:
+                death = enemy.register_hit()
+                del self.bullets[idx]
 
         return death
 

zombiii.py

@@ -21,7 +21,7 @@ def draw_bullet(bullet, X, Y):
     pygame.draw.line(window, bullet.color, (bullet.x, bullet.y), (X + bullet.x_end, Y + bullet.y_end), 2)
 
 def draw_enemy(enemy):
-    pygame.draw.circle(window, enemy.color, (math.ceil(enemy.x), math.ceil(enemy.y)), 20 ,1)
+    pygame.draw.circle(window, enemy.color, (math.ceil(enemy.x), math.ceil(enemy.y)), 20 ,4)
 
 def update_game():
     window.fill((0,0,0))
@@ -81,10 +81,6 @@ def show_menu(game, name, items, chosen):
         else:
             drawing.print_text(window, item, ((game.screen_x-(len(item)*size))/2,((game.screen_y)/2-name_size-(len(items)*(size+space))+space)+name_size+space*2+ (size+space)*idx), thickness, size, color)
 
-def menu_item(game, name):
-    pass
-
-
 def pause_game(game, enemy_time,pause):
     time = GAME_TIME.get_ticks() - enemy_time
     chosen = 0
@@ -100,8 +96,7 @@ def pause_game(game, enemy_time,pause):
                     pause = False;
                     enemy_time = (GAME_TIME.get_ticks() + time)
                 if event.key == pygame.K_RETURN:
-                    if menu_item(game, menu[chosen]):
-                        break
+                    pass
             if event.type == pygame.KEYDOWN:
                 if event.key == pygame.K_DOWN:
                     chosen +=1