class Game(): def __init__(self): self.g = Graphics(self) # load background image self.g.loadBackground(BACKGROUND_IMAGE) # Initialize our player and set its position to (50,50) self.player = self.g.loadPlayer(PLAYER_IMAGE) self.player.setPos(START_X, START_Y) # game clock self.clock = pygame.time.Clock() # Loop until exit self.gameLoop() def gameLoop(self): self.frameCountSub = 0 while True: # ensure we're running at a stable FPS self.clock.tick(FRAME_RATE) # handle user input self.handle_input() # possibly create new enemy self.frameCountSub += 1 if self.frameCountSub == ENEMY_SPAWN_INTERVAL: self.g.addSub() self.frameCountSub = 0 # update positions, handle collisions, etc self.g.update() # draw self.g.drawScreen() def handle_input(self): ''' Handle all input from user. This includes keypresses, mouse clicks, exiting, etc. ''' # For each event that occurs this frame for event in pygame.event.get(): # If user exits the window if event.type == QUIT: sys.exit(0) # monitor keyboard self.handle_keys(event) def handle_keys(self, event): ''' Handle input from user keyboard ''' if event.type == pygame.KEYDOWN: # move left if event.key == K_LEFT: self.player.setVel(Vector2(-1,0) * PLAYER_SPEED) # move right elif event.key == K_RIGHT: self.player.setVel(Vector2(1,0) * PLAYER_SPEED) # fire elif event.key == K_SPACE: self.fireTorpedo() # exit game elif event.key == K_ESCAPE: sys.exit(0) elif event.type == pygame.KEYUP: # if we released either the left or right arrow key, stop moving if event.key == K_LEFT or event.key == K_RIGHT: self.player.setVel(Vector2(0,0)) def fireTorpedo(self): pos = self.player.getPos() self.g.addTorpedo(pos)
