Pygame

import random,math
import pygame

BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (  0, 255,   0)

pygame.init()


class SpaceShip(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load("ship.png").convert()
        self.image.set_colorkey(WHITE)
        self.rect = self.image.get_rect()
        self.rect.x = 320
        self.rect.y = 420
        self.speed = 3
        self.ammo = 0

    def checkForKeyPress(self):
        keys = pygame.key.get_pressed()
        if keys[pygame.K_LEFT]:
            if self.rect.x > 5:
                self.rect.x -= self.speed
        if keys[pygame.K_RIGHT]:
            if self.rect.x < 590:
                self.rect.x += self.speed
        if keys[pygame.K_SPACE]:
            pass
            """bullet = Bullet()
            bullet.rect.x = self.rect.centerx
            bullet.rect.y = (self.rect.top - 10)
            bullet.speed = 3
                

            if len(pbulletList)<7:
                pbulletList.add(bullet)
                allSprites.add(bullet)"""

    def update(self):
        self.checkForKeyPress()

    def shoot(self):

        bullet1 = Bullet()
        bullet1.rect.x = self.rect.left
        bullet1.rect.y = (self.rect.top - 10)
        bullet1.speed = 3
        bullet2 = Bullet()
        bullet2.rect.x = self.rect.right
        bullet2.rect.y = (self.rect.top - 10)
        bullet2.speed = 3
        if len(pbulletList) < 7:
            pbulletList.add(bullet1,bullet2)
            allSprites.add(bullet1,bullet2)

class Alien(pygame.sprite.Sprite):
    def __init__(self, x, y,img):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load("c%d.png" %img).convert()
        self.transColor = self.image.get_at((10, 10))
        self.image.set_colorkey(self.transColor)
        self.image = pygame.transform.scale(self.image, (50, 50))
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed = 1
        self.way = 0
        self.timex = 0
    def update(self):

        if self.way < 0:
            self.speed = -1 * self.speed
        if self.way > 25:
            self.speed = -1 * self.speed
            self.way = 0
        self.way +=0.3
        self.rect.x += self.speed
        #self.fire()
        
        
    def fire(self):
        if random.randrange(10)==5:
            if self.timex > 40:
                bullet = Bullet()
                bullet.rect.x = self.rect.centerx
                bullet.rect.y = self.rect.bottom
                bullet.speed -= 1
                self.timex = 0
                ebulletList.add(bullet)
                allSprites.add(bullet)

            else:
                self.timex +=1
    
class Brick(pygame.sprite.Sprite):
    def __init__(self,x,y):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((4, 10))
        self.image.fill(GREEN)
        self.rect = self.image.get_rect()
        self.speed = -1
        self.rect.x = x
        self.rect.y = y
            

class Bullet(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((4, 10))
        self.image.fill(RED)
        self.rect = self.image.get_rect()
        self.speed = -1
    def update(self):
        self.rect.y -= self.speed
        if self.rect.y < 0 or self.rect.y > 480:
            self.kill()


    def is_collided_with(self, sprite):
        return self.rect.colliderect(sprite.rect)


class ScoreBoard(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.score = 0
        self.font = pygame.font.SysFont("None", 25)

    def update(self):
        self.text = " score: %d" % (self.score)
        self.image = self.font.render(self.text, 1, (RED))
        self.rect = self.image.get_rect()
pygame.display.set_caption("AlienTR: V0.1")
screen = pygame.display.set_mode((640, 480))
timex = 0

allSprites = pygame.sprite.Group()
ebulletList = pygame.sprite.Group()
pbulletList = pygame.sprite.Group()
alienList = pygame.sprite.Group()
shipList = pygame.sprite.Group()
brickList = pygame.sprite.Group()
aliens = []
def main():
    
    clock = pygame.time.Clock()
    gameRunning = True
    ship = SpaceShip()
    shipList.add(ship)
    bricks = []
    for x in range(50,160):
        for y in range(360,380):
            brick = Brick(x, y)
            bricks.append(brick)

    for x in range(250, 360):
        for y in range(360, 380):
            brick = Brick(x, y)
            bricks.append(brick)
    for x in range(450, 560):
        for y in range(360, 380):
            brick = Brick(x, y)
            bricks.append(brick)
    brickList.add(bricks)
    for i in range(1,6):

        alien1 = Alien(10,30,1)
        alien = Alien(i*100,30,i)
        aliens.append(alien)
        aliens.append(alien1)
    for i in range(1, 6):
        alien1 = Alien(10, 95, 1)
        alien = Alien(i * 100, 95, i)
        aliens.append(alien)
        aliens.append(alien1)
    for i in range(1, 6):
        alien1 = Alien(10, 160, 1)
        alien = Alien(i * 100, 160, i)
        aliens.append(alien)
        aliens.append(alien1)
    for i in range(1, 6):
        alien1 = Alien(10, 225, 1)
        alien = Alien(i * 100, 225, i)
        aliens.append(alien)
        aliens.append(alien1)

    timer = random.uniform(2, 6)  # Random float between 2 and 6.
    dt = 4



    
    

        
    start_ticks=pygame.time.get_ticks()
    # alien = Alien(30,30)
    score = ScoreBoard()
    allSprites.add(ship, aliens, score,bricks)
    alienList.add(aliens)
    while gameRunning:
        seconds=(pygame.time.get_ticks()-start_ticks)/1000
        for event in pygame.event.get():  # User did something
            if event.type == pygame.QUIT:  # If user clicked close
                gameRunning = False  # Flag that we are done so we exit this loop
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE:
                    ship.shoot()

        """timer -= dt
        if timer < 3:  # Ready to fire.
            random_alien = random.choice(aliens)
            random_alien.fire()
            
            timer = random.uniform(2, 6)  # Reset the timer.

        # Collision detection and drawing omitted.

        # clock.tick returns the time that has passed since the last frame.
        #dt = clock.tick(60) / 1000
        print timer
        """
        """for bullet in ebulletList:
            if bullet.rect.y > 480:
                ebulletList.remove(bullet)
                allSprites.remove(bullet)
                print bullet.rect.y"""
        """for bullet in bulletList:
            hit = pygame.sprite.spritecollide(bullet, alienList, True)
            if hit:
                score.score = score.score + 1
                print hit[0]
                alienList.remove(hit)
                bulletList.remove(bullet)
                allSprites.remove(bullet)
                
                aliens.pop(1)
                       
            hit2 = pygame.sprite.spritecollide(bullet,shipList,True)"""
        hit = pygame.sprite.groupcollide(pbulletList, alienList, True, True)
        if hit:
            score.score = score.score + 1
        hit2 = pygame.sprite.groupcollide(pbulletList,brickList,True,True)
        hit3 = pygame.sprite.groupcollide(ebulletList,brickList,True,True)
        """for bullet in pbulletList:

            hit_list = pygame.sprite.spritecollide(bullet,alienList,True)

            for hit in hit_list:
                alienList.remove(hit)
                allSprites.remove(hit)"""
        for alien in alienList:
            alien.fire()
        """for bullets in pbulletList:
            for enemy in alienList:
                if(pygame.sprite.spritecollide(bullets,allSprites,False)):
                    alienList.remove(enemy)
                    allSprites.remove(enemy)"""
        """for bullet in ebulletList:
            hit = pygame.sprite.spritecollide(bullet,ebulletList,False)
            if len(hit) > 0:
                for block in hit:
                    ebulletList.remove(bullet)
                    allSprites.remove(bullet)
                #ebulletList.remove(bullet)
                #allSprites.remove(bullet)
"""
        ebulletList.update()
        pbulletList.update()
        alienList.update()
        shipList.update()
        allSprites.update()
        screen.fill(BLACK)
        clock.tick(30)
        allSprites.draw(screen)
        # bulletList.update()
        # bulletList.draw(screen)
        pygame.display.flip()
        #print len(ebulletList)
        print len(pbulletList)


if __name__ == "__main__":
    main()
pygame.quit()