Hi, I'm having some troubles with a game that I am attempting to modify at this moment. I just got working a health meter or sorts, not really a meter but a just numbers that go down to zero when the ship is hit. But now when my character dies, the game spawns way too many enemies at one time, making my game crash. Any help is appreciated. The Spawn method given by the program. def SpawnAliens(level, aliens): # this creates our starting aliens # aliencount * x -- must be less than SCREEN_WIDTH game contant aliencount = 10 + (level*2) while aliencount > 0: Alien() aliencount = aliencount - 1 x = 0 y = 30 for alien in aliens.sprites(): alien.SetPosition(x, y) x = x + 50 if (x > SCREEN_WIDTH): # if there too many aliens to fit on one line # start a new line of them y = y + 50 x = 0 code for where i implemented player health, life and reposition of ship for alien in pygame.sprite.spritecollide(player, aliens, 1): # when the player is hit by an alien ship the level # restarts playerHealth = playerHealth - 20 if playerHealth == 0: player.Explode() SpaceShipExplosion(player) playerLife = playerLife - 1 playerHealth = 100 player.rect.bottom = SCREEN_HEIGHT # clear the aliens group, and respawn them for alien in aliens.sprites(): alien.kill() SpawnAliens(gamelevel, aliens)

You should edit your post and put your code inside tags. This will maintain the indentation, which is necessary for us to understand your python code.

You should edit your post and put your code inside tags. This will maintain the indentation, which is necessary for us to understand your python code.

Hi I would just like to say that I solved the problem, however a new problem has become apparent. I would like to create a missile that goes from my ship to the top of the screen destroying all enemies who touch it. Unfortunately the missile kills itself when it hits any of the enemies. I tried to get rid of the kill line code, and am quite confused on how the group collide function works. Any help would be great.

## Modification of RAFT Invaders## Copyright 2004## by: RAFT CodeWalkers## Modification done by Justin Mah and Shannon Tinkleyimport os, sys, pygamefrom pygame.locals import *# Game constantsMAX_SHOTS = 10       # Max number of player bullets onscreenSCREEN_WIDTH = 640SCREEN_HEIGHT = 480MISSILE = 1# Global VariableplayerScore = 0global playerLifeplayerLife = 3global playerHealthplayerHealth = 100global gameLevelgameLevel = 1#################################### Functions to load sound and images#def load_sound(name):    class NoneSound:        def play(self): pass    if not pygame.mixer or not pygame.mixer.get_init():        return NoneSound()    fullname = os.path.join('data', name)    if os.path.exists(fullname) == True:        sound = pygame.mixer.Sound(fullname)     else:          print 'Cannot load sound:', fullname    return sound#################################### We need a spaceship class to handle the player's spaceship#class SpaceShip(pygame.sprite.Sprite):    name = ""    lives = 3    image = ""    rect = ""    ## set up the class when it starts    def __init__(self):        pygame.sprite.Sprite.__init__(self, self.containers)        self.image = pygame.image.load('jet1.gif')        self.rect = self.image.get_rect()                    ## give the ship a new name    def SetName(self, newName):        self.shipName = newName    ## set the position of the ship    def SetPosition(self, x, y):        self.rect.left = x        self.rect.top = y    ## move the ship to the left by a distance    def MoveLeft(self, distance):        self.rect.left = self.rect.left - distance    ## move the ship to the right by a distance    def MoveRight(self, distance):        self.rect.left = self.rect.left + distance    ## move the ship up by a distance    def MoveUp(self, distance):        self.rect.top = self.rect.top - distance    ## move the ship down by a distance    def MoveDown(self, distance):        self.rect.top = self.rect.top + distance    ## what happens when the ship is hit    def Explode(self):        self.lives = self.lives - 1#################################### When an alien hits the player they explode#class SpaceShipExplosion(pygame.sprite.Sprite):    animcycle = 3    images = []    def __init__(self, actor):        pygame.sprite.Sprite.__init__(self, self.containers)        self.explosion_sound = load_sound('explos.wav')        self.explosion_sound.play()        # define our explosion animation frames        self.images.append(pygame.image.load('jet2.bmp'))        self.images.append(pygame.image.load('jet2.bmp'))        self.images.append(pygame.image.load('jet4.bmp'))        self.image = self.images[0]        self.rect = self.image.get_rect()        self.life = playerLife        self.rect.center = actor.rect.center    def update(self):        self.life = self.life - 1        self.image = self.images[self.life/self.animcycle%3]        if self.life <= 0:            self.kill()#################################### A separate class for a spaceship bullet#class SpaceShipBullet(pygame.sprite.Sprite):    speed = [0, -8]    image = ""    rect = ""    ## set up the class when it starts    def __init__(self, x, y):        pygame.sprite.Sprite.__init__(self, self.containers)        self.image = pygame.image.load('bullet.bmp')        self.bullet_sound = load_sound('fire.wav')        self.bullet_sound.play()        self.rect  = self.image.get_rect()        self.SetPosition(x, y)    ## set the bullet speed    def SetSpeed(self, x, y):        self.speed = [x,y]    ## set the position of the ship    def SetPosition(self, x, y):        self.rect.left = x        self.rect.top = y    ## move the bullet    def update(self):        self.rect.move_ip(self.speed[0], self.speed[1])        if self.rect.top <= 0:            self.kill()#################################### A separate class for a spaceship bomb#class SpaceShipMissile(pygame.sprite.Sprite):    speed = [0, -4]    image = ""    rect = ""    images = []    ## set up the class when it starts    def __init__(self, x, y):        pygame.sprite.Sprite.__init__(self, self.containers)        self.image = pygame.image.load('missile.gif')        self.missileX_sound = load_sound('bomb.wav')        self.missileX_sound.play()        self.rect  = self.image.get_rect()        self.SetPosition(x, y)    ## set the bullet speed    def SetSpeed(self, x, y):        self.speed = [x,y]    ## set the position of the ship    def SetPosition(self, x, y):        self.rect.left = x        self.rect.top = y    ## move the bullet    def update(self):        self.rect.move_ip(self.speed[0], self.speed[1])        if self.rect.top <= 0:            self.kill()                     #################################### The bad guys in our game deserve a class too!#class Alien(pygame.sprite.Sprite):    horzspeed = 5    vertspeed = 0    alive = 1    image = ""    rect = ""    ## set up the class when it starts    def __init__(self):        pygame.sprite.Sprite.__init__(self, self.containers)        self.image = pygame.image.load('enemy1.gif')        self.rect = self.image.get_rect()        self.vertspeed = self.rect.height + 5    ## set the position of the alien    def SetPosition(self, x, y):        self.rect.left = x        self.rect.top = y    ## the aliens move mindlessly    def update(self):        self.rect.move_ip(self.horzspeed, 0)        # turn around at the edges of the screen        # and move vertically too        if self.rect.right > SCREEN_WIDTH or self.rect.left < 0:            self.horzspeed = -self.horzspeed            self.rect.move_ip(self.horzspeed, self.vertspeed)#################################### When an alien is hit it needs a custom explosion# otherwise it just disappears from the screen#class AlienExplosion(pygame.sprite.Sprite):    defaultlife = 9    animcycle = 3    images = []    def __init__(self, actor):        pygame.sprite.Sprite.__init__(self, self.containers)        # define our explosion animation frames        self.explosion_sound = load_sound('explos.wav')        self.explosion_sound.play()        self.images.append(pygame.image.load('enemy2.gif'))        self.images.append(pygame.image.load('enemy3.gif'))        self.images.append(pygame.image.load('enemy4.gif'))        self.image = self.images[0]        self.rect = self.image.get_rect()        self.life = self.defaultlife        self.rect.center = actor.rect.center    def update(self):        self.life = self.life - 1        self.image = self.images[self.life/self.animcycle%3]        if self.life <= 0: self.kill()#################################### The score text will be a sprite#class Score(pygame.sprite.Sprite):    global playerScore    image = ""    rect = ""    def __init__(self):        pygame.sprite.Sprite.__init__(self)        self.font = pygame.font.Font(None, 20)        self.color = Color('white')        self.update()        self.rect = self.image.get_rect().move(75, 1)    def update(self):        msg = "Score: %d" % playerScore        self.image = self.font.render(msg, 0, self.color)#################################### The ship health text will be a sprite#class Health(pygame.sprite.Sprite):    image = ""    rect = ""    def __init__(self):        pygame.sprite.Sprite.__init__(self)        self.font = pygame.font.Font(None, 20)        self.color = Color('white')        self.update()        self.rect = self.image.get_rect().move(250, 1)    def update(self):        msg = "Health: %d" % playerHealth        self.image = self.font.render(msg, 0, self.color)#################################### The player's Lives text will be a sprite#class Lives(pygame.sprite.Sprite):    image = ""    rect = ""    def __init__(self):        pygame.sprite.Sprite.__init__(self)        self.font = pygame.font.Font(None, 20)        self.color = Color('white')        self.update()        self.rect = self.image.get_rect().move(150, 1)    def update(self):        msg = "Lives: %d" % playerLife        self.image = self.font.render(msg, 0, self.color)#################################### The game level will also be sprite#class Level(pygame.sprite.Sprite):    image = ""    rect = ""    level = 0        def __init__(self, gamelevel):        pygame.sprite.Sprite.__init__(self)        self.level = gamelevel        self.font = pygame.font.Font(None, 20)        self.color = Color('white')        self.update()        self.rect = self.image.get_rect().move(1, 1)    def update(self):        msg = "Level: %d" % self.level        self.image = self.font.render(msg, 0, self.color)#################################### Spawn aliens based on the game level#def SpawnAliens(level, aliens):    # this creates our starting aliens    # aliencount * x -- must be less than SCREEN_WIDTH game contant    aliencount = 10 + level    while aliencount > 0:        Alien()        aliencount = aliencount - 1    x = 0    y = 30    for alien in aliens.sprites():        alien.SetPosition(x, y)        x = x + 50        if (x > SCREEN_WIDTH):            # if there too many aliens to fit on one line            # start a new line of them            y = y + 50            x = 0            #################################### Main Game Code#def PlayGame(gamelevel):    global playerScore    global playerLife    global playerHealth    # This function is called when the program starts.    # it initializes everything it needs, then runs in    # a loop until the function returns.        # Initialize everything    pygame.init()    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))    pygame.display.set_caption('RAFT Invaders')    pygame.mouse.set_visible(0)    # Create the backgound surface    background = pygame.Surface(screen.get_size())    background = background.convert()    background.fill((0, 0, 0))        # Display the default background    screen.blit(background, (0, 0))    pygame.display.flip()        # Prepare game objects    clock = pygame.time.Clock()    # Initialize game groups    allsprites = pygame.sprite.RenderUpdates()    shots = pygame.sprite.Group()    aliens = pygame.sprite.Group()    # Assign default groups to each sprite class    SpaceShip.containers = allsprites    SpaceShipExplosion.containers = allsprites    SpaceShipBullet.containers = shots, allsprites    SpaceShipMissile.containers = shots, allsprites    Alien.containers = aliens, allsprites    AlienExplosion.containers = allsprites    Score.containers = allsprites    Level.containers = allsprites    Lives.containers = allsprites    Health.containers = allsprites        # Prepare game objects    player = SpaceShip()    player.SetPosition( (SCREEN_WIDTH/2)-(player.rect.width/2),                         (SCREEN_HEIGHT - player.rect.height) )    # spawn the aliens based on the game level    SpawnAliens(gamelevel, aliens)    # Set up the score and level sprites    player.score = 0    if pygame.font:        allsprites.add(Score())        allsprites.add(Level(gamelevel))        allsprites.add(Lives())        allsprites.add(Health())            # Main Loop    while 1:        # Keep the game at a set speed        clock.tick(60)                # Handle input events        for event in pygame.event.get():            if event.type == QUIT:                return 0            elif event.type == KEYDOWN and event.key == K_ESCAPE:                return 0        # Get the key pressed        keystate = pygame.key.get_pressed()        # Move player based on arrow input        if keystate[K_RIGHT] == 1:            player.MoveRight(8)            # Keep the ship on the screen            if player.rect.right >= SCREEN_WIDTH:                player.rect.right = SCREEN_WIDTH        elif keystate[K_LEFT] == 1:            player.MoveLeft(8)            # Keep the ship on the screen            if player.rect.left <= 0:                player.rect.left = 0        elif keystate[K_UP] == 1:            player.MoveUp(8)            # Keep the ship on the screen            if player.rect.top <= 0:                player.rect.top = 0        elif keystate[K_DOWN] == 1:            player.MoveDown(8)            # Keep the ship on the screen            if player.rect.bottom >= SCREEN_HEIGHT:                player.rect.bottom = SCREEN_HEIGHT        # Shoot a bullet when the space bar is pressed        if keystate[K_SPACE] == 1:            if len(shots) < MAX_SHOTS:                SpaceShipBullet(player.rect.centerx,                                 player.rect.centery)        if keystate[K_x] == 1:            if len(shots) < MISSILE:                SpaceShipMissile(player.rect.centerx,                                 player.rect.centery)        # Check for collisions        for alien in pygame.sprite.groupcollide(shots, aliens, 1, 1).keys():            AlienExplosion(alien)            # add to the score            playerScore = playerScore + 10        #player will lose life, but continue on in the game        #the level will not reset itself        for alien in pygame.sprite.spritecollide(player, aliens, 1):            playerHealth = playerHealth - 20            if playerHealth == 0:                player.Explode()                SpaceShipExplosion(player)                playerHealth = 100                player.rect.bottom = SCREEN_HEIGHT                playerLife = playerLife - 1                if playerLife <= 0:                    playerLife = 3                    gameLevel = 1                    IntroScreen() #for now until a gameover screen is made                    ### Draw everything        # Clear/erase the last drawn sprites        allsprites.clear(screen, background)        # Update sprites via their update functions        allsprites.update()        # Locate all the sprite rectangles and update        # their location on the screen        dirty = allsprites.draw(screen)        pygame.display.update(dirty)        pygame.display.flip()        if len(aliens) == 0:            # No more aliens?            # Level completed!            return 2        if player.lives <= 0:            # No more lives?            # Game Over            return 1#################################### Show the intro screen#def IntroScreen():    # Initialize everything    pygame.init()    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))    pygame.display.set_caption('RAFT Invaders')    pygame.mouse.set_visible(0)     # Create the backgound surface    background = pygame.Surface(screen.get_size())    background = background.convert()    background.fill((0, 0, 0))    # Display some text    font = pygame.font.Font(None, 26)    text = font.render("Press SPACE to play", 1, (250, 250, 250))    textpos = text.get_rect()    textpos.centerx = background.get_rect().centerx    textpos.centery = 20    background.blit(text, textpos)    # Display some text    font = pygame.font.Font(None, 26)    text = font.render("Press Q to quit", 1, (250, 250, 250))    textpos = text.get_rect()    textpos.centerx = background.get_rect().centerx    textpos.centery = 60    background.blit(text, textpos)    # Blit everything to the screen    screen.blit(background, (0, 0))    pygame.display.flip()    # wait for a decision    while 1:        # Handle input events        for event in pygame.event.get():            if event.type == QUIT:                return 0            elif event.type == KEYDOWN and event.key == K_q:                return 0            elif event.type == KEYDOWN and event.key == K_SPACE:                return 2    ###################### Python runs the code below first#while 1:    exitcode = IntroScreen()    if exitcode == 0:        # player asked to quit        sys.exit(0)    elif exitcode == 2:        # player has chosen to play!        exitcode = 2    gamelevel = 1    playerScore = 0    while exitcode == 2:        print "Going to level", gamelevel        exitcode = PlayGame(gamelevel)        if exitcode == 0:            # player asked to quit, return to the intro screen            exitcode == 2        elif exitcode == 1:            # end of game, player has died            break        elif exitcode == 2:            # level cleared, go to the next            gamelevel = gamelevel + 1        elif player.live <= 0:            gamelevel = 1

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