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用 Python 写游戏 第一篇 课后习题答案
source link: http://www.jtianling.com/learn-python-by-game-examples-1-answer.html
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用 Python 写游戏 第一篇 课后习题答案
第一篇课后练习
这里我留下一个思考题, 我们平时操作游戏的时候, 不会一直不停的按键盘, 那样太累, 怎么样把上面的程序改成当我们按下方向键的时候, 圆一直移动呢?
这里给个提示, 你还需要实现 on_key_up
函数, 来获得我们松开键盘按键的信息.
答案
player_pos_x = 100 player_pos_y = 100 def draw(): screen.clear() screen.draw.filled_circle((player_pos_x, player_pos_y), 3, (255, 255, 255)) up = False down = False left = False right = False def on_key_down(key): global up,down, left,right if key == keys.UP: up = True elif key == keys.DOWN: down = True elif key == keys.LEFT: left = True elif key == keys.RIGHT: right = True def update(): global up, down, left, right, player_pos_x, player_pos_y if up: player_pos_y = player_pos_y - 1 if down: player_pos_y = player_pos_y + 1 if left: player_pos_x = player_pos_x - 1 if right: player_pos_x = player_pos_x + 1 def on_key_up(key): global down,up,left,right if key == keys.UP: up = False elif key == keys.DOWN: down = False elif key == keys.LEFT: left = False elif key == keys.RIGHT: right = False
该习题完成后, 我们就有了一个可以较自由操作的主角了, 期待接下来的课程吧.
分类:编程
标签: 编程 pyzero
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