added alien shooting

PyGame/practice/gameprac/hybrid.py

@@ -12,9 +12,16 @@ HEIGHT = 800
 WINDOW_SIZE = (WIDTH, HEIGHT)
 FPS = 60
 
+WHITE = (255, 255, 255)
+BLACK = (0, 0, 0)
+RED = (255, 0, 0)
+GREEN = (0, 255, 0)
+BLUE = (0, 0, 255)
 
 ROWS = 5
 COLS = 5
+alien_cooldown = 1000
+last_alien_shot = pygame.time.get_ticks()
 
 # load background image
 bg = pygame.image.load("img/bg.png")  # FUCK THIS IN THE ASS FIXXED IT FUCK YEA
@@ -72,7 +79,6 @@ class Aliens(pygame.sprite.Sprite):
         self.rect.center = [x, y]
         self.move_counter = 0
         self.move_direction = 1
-#  WONT MOVE TO THE RIGHT ONLY TO THE LEFT AND STOP
     def update(self): 
         self.rect.x += self.move_direction
         self.move_counter += 1
@@ -80,14 +86,28 @@ class Aliens(pygame.sprite.Sprite):
             self.move_direction *= -1
             self.move_counter *= self.move_direction
 
+class Alien_Bullets(pygame.sprite.Sprite):
+    def __init__(self, x, y):
+        pygame.sprite.Sprite.__init__(self) 
+        self.image = pygame.image.load("img/alien_bullet.png")
+        self.rect = self.image.get_rect()
+        self.rect.center = [x, y]
+    def update(self):
+        self.rect.y += 2
+        if self.rect.top > HEIGHT:
+            self.kill() 
+
 # create sprite groups
 spaceship_group = pygame.sprite.Group()
 bullet_group = pygame.sprite.Group()
-
+alien_group = pygame.sprite.Group()
+alien_bullet_group = pygame.sprite.Group()
 # create player
 spaceship = Spaceship(int(WIDTH / 2), HEIGHT - 100, 3)
 spaceship_group.add(spaceship)
-alien_group = pygame.sprite.Group()
+
+
+
 
 def create_aliens():
     for row in range(ROWS):
@@ -98,14 +118,6 @@ def create_aliens():
 create_aliens()
 
 
-
-
-WHITE = (255, 255, 255)
-BLACK = (0, 0, 0)
-RED = (255, 0, 0)
-GREEN = (0, 255, 0)
-BLUE = (0, 0, 255)
-
 pygame.init()
 pygame.mixer.init()
 screen = pygame.display.set_mode(WINDOW_SIZE)
@@ -120,20 +132,33 @@ while running:
  
     draw_bg()
 
-    # event handlers
+    # create randomw alien bullets
+    #record current time
+    time_now = pygame.time.get_ticks()
+    #shoot
+    if time_now - last_alien_shot > alien_cooldown and len(alien_bullet_group) < 5 and len(alien_group) > 0:
+        attacking_alien = random.choice(alien_group.sprites())
+        alien_bullet = Alien_Bullets(attacking_alien.rect.centerx, attacking_alien.rect.bottom)
+        alien_bullet_group.add(alien_bullet)
+        last_alien_shot = time_now 
         
+
+    # event handlers
     for event in pygame.event.get():
         if event.type == pygame.QUIT:
             running = False
     
     spaceship.update()
+
     bullet_group.update()
     alien_group.update()
+    alien_bullet_group.update()
     # draw sprite groups on screen
     spaceship_group.draw(screen)
     bullet_group.draw(screen)
     alien_group.draw(screen)
-    pygame.display.update() # Go over it again FLIP vs UPDATE Which to use When
+    alien_bullet_group.draw(screen)
+    pygame.display.update()