Trying to fix a bug

Main.py

@@ -20,10 +20,13 @@ def play():
     pygame.mouse.set_visible(False)
     slowsurf = SlowTimeSurf(384,64)
     enemy = Enemy(100,100)
+    #enemies_on_screen.append(enemy)
     enemy2 = Enemy(windowX,200)
+    #enemies_on_screen.append(enemy2)
     player = Player()
     death_timer = 70
     SCORE = 0
+    ppp = False
 ########################## LAYER 0
     while True:
         for event in pygame.event.get():
@@ -50,15 +53,16 @@ def play():
                 print("Colliding !")
                 slowsurf.switch = False
         else:
-            if slowsurf.timer >= 0:
+            if slowsurf.activation_timer >= 0:
-                slowsurf.timer -= 1
+                slowsurf.activation_timer -= 1
                 enemy.vel = 3 - 2
                 enemy2.vel = 3 - 2
                 enemy.bul_cooldown += 1.5
                 enemy2.bul_cooldown += 1.5
             else:
-                enemy.vel = 3
+                enemy.refresh()
-                enemy2.vel = 3
+                enemy2.refresh()
+
 
         player.teleportation()
         player.shoot(window)
@@ -81,17 +85,17 @@ def play():
 
 ########################## LAYER 2
         if enemy.alive == True:
-            enemy.enemy_shoot(window)
             enemy.draw(window)
             enemy.move('right')
+            enemy.enemy_shoot(window)
             enemy.collision(window)
             if enemy.enemy_x >= windowX-10: #That returning thingy
                 enemy.enemy_x = 5
 
         if enemy2.alive == True:
+            enemy2.draw(window)
             enemy2.enemy_shoot(window)
             enemy2.move('left')
-            enemy2.draw(window)
             enemy2.collision(window)
             if enemy2.enemy_x <= 5: #That returning thingy
                 enemy2.enemy_x = windowX
@@ -106,6 +110,15 @@ def play():
         if enemy.alive == False and enemy2.alive == False:
             print('Win-win')
             break
+
+        # for enemy in enemies_on_screen:
+        #     if enemy[0].alive == True:
+        #         enemy[0].move('right')
+        #         enemy[0].enemy_shoot(window)
+        #         enemy[0].draw(window)
+        #         enemy[0].collision(window)
+        #     else:
+        #         enemy[0].draw(window)
 ########################## LAYER 2 END
 
 ########################## LAYER 3

beings.py

@@ -7,7 +7,7 @@ from settings import windowX,windowY,bullet_image,enemy_bul_img,enemy_image,play
 import time
 import sys
 
-
+enemies_on_screen = []
 
 class Player:
     def __init__(self):
@@ -163,3 +163,6 @@ class Enemy:
             for particle in particles_on_screen_e:
                 particle.draw(window)
                 particle.update("up")
+    def refresh(self):
+        #self.bul_cooldown = 10
+        self.vel = 3

surfaces.py

@@ -22,7 +22,7 @@ class SlowTimeSurf:
         self.color = (0,0,0)
         self.rect = pygame.Rect(self.x, self.y, self.width, self.height)
         self.switch = True
-        self.timer = 500
+        self.activation_timer = 500
     def place(self,window):
         pygame.draw.rect(window,self.color,self.rect)
         window.blit(timesurf_image,(self.rect[0], self.rect[1]))