ADDING EXPLOSIONS

PyGame/practice/gameprac/hybrid.py

@@ -55,6 +55,11 @@ class Spaceship(pygame.sprite.Sprite):
             bullet_group.add(bullet)
             self.last_shot = time_now
 
+        # update mask
+        self.mask = pygame.mask.from_surface(self.image) # this does pixel perfect collison becasue it ignores anything that is not spaceship
+        
+        
+
         pygame.draw.rect(screen, RED, (self.rect.x, (self.rect.bottom +10), self.rect.width, 15))
         if self.health_remaining > 0:
             pygame.draw.rect(screen, GREEN, (self.rect.x, (self.rect.bottom +10), int(self.rect.width * (self.health_remaining / self.health_start)), 15) )
@@ -70,6 +75,9 @@ class Bullets(pygame.sprite.Sprite):
         self.rect.y -= 5
         if self.rect.bottom < 0:
             self.kill() 
+        if pygame.sprite.spritecollide(self, alien_group, True):
+            self.kill()
+    
 # video for this https://www.youtube.com/watch?v=mqz1_wRSMwo
 class Aliens(pygame.sprite.Sprite): 
     def __init__(self,x ,y):
@@ -95,7 +103,10 @@ class Alien_Bullets(pygame.sprite.Sprite):
     def update(self):
         self.rect.y += 2
         if self.rect.top > HEIGHT:
-            self.kill() 
+            self.kill()
+        if pygame.sprite.spritecollide(self, spaceship_group, False, pygame.sprite.collide_mask):
+           self.kill()
+           spaceship.health_remaining -= 1  
 
 # create sprite groups
 spaceship_group = pygame.sprite.Group()