lasers = []
# Create the enemies; choose starting location and starting speed for each sprite
enemies = []
for i in range(NUM_ENEMIES):
enemies.append(Enemy(screen, randint(1, (screen.get_size()[0]/2 - 19)),
0, randint(1, MAX_SPEED), randint(1, MAX_SPEED)))
# Keep track of events
events = {'down': 0, 'up': 0, 'right': 0, 'left': 0}
# Create battlecruiser
cruiser = Battlecruiser(screen, SCREEN_WIDTH/2, SCREEN_HEIGHT-100, 4)
# Create background
bg = ScrollingBackground(screen, SCROLL_SPEED)
# Game loop
while True:
if cruiser.active == False:
render_game_over(screen, score)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == KEYDOWN:
if event.key == K_ESCAPE:
pygame.quit()
sys.exit()
else:
time_passed = clock.tick(FPS)
def main():
# Check if sound and font are supported
if not pygame.font:
print "Warning, fonts disabled"
if not pygame.mixer:
print "Warning, sound disabled"
# Constants
FPS = 50
SCREEN_WIDTH, SCREEN_HEIGHT = 800, 600
BACKGROUND_COLOR = (0, 0, 0)
LASER_SPEED = 300
SHIP_SPEED = 300
SCROLL_SPEED = 50
SCORE_POS = (20, 20)
ENEMY_RELEASE_DELAY = 750
MIN_SPEED = 100
MAX_SPEED = 350
# Initialize Pygame, the clock, a font, and a screen
pygame.init()
pygame.display.set_caption("Game.py")
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT), 0, 32)
clock = pygame.time.Clock()
font = pygame.font.Font(None, 36)
endfont = pygame.font.Font(None, 60)
# Create the sprite group
lasers = pygame.sprite.Group()
enemies = pygame.sprite.Group()
player = Battlecruiser(screen, (SCREEN_WIDTH / 2), -1, SHIP_SPEED)
background = ScrollingBackground(screen, SCROLL_SPEED)
# Initialize variables
score = 0
delay_counter = 0
# Game loop
while True:
time_passed = clock.tick(FPS)
# Event handling here (to quit)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
elif event.type == KEYDOWN:
if event.key == K_ESCAPE:
pygame.quit()
sys.exit()
if event.key == K_SPACE and player.get_state() == "Flying":
lasers.add(player.shoot())
if event.key == K_UP:
player.up()
if event.key == K_DOWN:
player.down()
if event.key == K_LEFT:
player.left()
if event.key == K_RIGHT:
player.right()
if event.key == K_r and player.get_state() == "Dead":
enemies.empty()
lasers.empty()
background.kill()
background = ScrollingBackground(screen, SCROLL_SPEED)
player.kill()
player = Battlecruiser(screen, (SCREEN_WIDTH / 2), -1, SHIP_SPEED)
elif event.type == KEYUP:
if event.key == K_UP:
if player.get_direction()[1] < 0:
player.zero_vert()
if event.key == K_DOWN:
if player.get_direction()[1] > 0:
player.zero_vert()
if event.key == K_LEFT:
if player.get_direction()[0] < 0:
player.zero_hort()
if event.key == K_RIGHT:
if player.get_direction()[0] > 0:
player.zero_hort()
# Update if player still alive
if player.get_state() == "Flying":
delay_counter += time_passed
if delay_counter >= ENEMY_RELEASE_DELAY:
enemies.add(
Enemy(
screen,
randint(1, SCREEN_WIDTH),
0,
randint(MIN_SPEED, MAX_SPEED),
randint(MAX_SPEED * -1, MAX_SPEED),
randint(MIN_SPEED, MAX_SPEED) * -1,
)
)
delay_counter = 0
# Redraw the background
background.update(time_passed)
background.draw()
# Draw score
fontscore = font.render(str(score), 1, (255, 255, 255))
screen.blit(fontscore, SCORE_POS)
# Check for collisions
player_collision = pygame.sprite.spritecollideany(player, enemies)
if player_collision is not None:
if player_collision.get_state() is not "Dead":
player.explode()
collided = pygame.sprite.groupcollide(enemies, lasers, False, False)
for enemy in collided:
if enemy.get_state() == "Flying":
enemy.explode()
score += 100
# Update and redraw all enemies
enemies.update(time_passed)
for enemy in enemies.sprites():
enemy.draw()
# Update and redraw all lasers
lasers.update(time_passed)
for laser in lasers.sprites():
laser.draw()
player.update(time_passed)
player.draw()
# Allow death to progress
else:
player.update(time_passed)
player.draw()
if player.get_active():
endtext = endfont.render("Final Score: " + str(score), 1, (255, 255, 255))
screen.blit(endtext, (240, 180))
else:
endtext = endfont.render(("'r' to restart."), 1, (255, 255, 255))
screen.blit(endtext, (240, 250))
# Draw the sprites
pygame.display.update()
