pgzero：用 Python 进行游戏开发

Posted 2021-09-09 Gendan

import pgzrun

 全局变量和初始化信息

TITLE = \'xxx\'
WIDTH = 400
HEIGHT = 500

 绘制游戏元素

def draw():
    pass

 更新游戏状态

def update():
    pass

 处理键盘事件

def on_key_down():
    pass

 处理键盘事件

def on_mouse_down():
    pass

 执行

pgzrun.go()
import pgzrun
import random
TITLE = \'Flappy Bird\'
WIDTH = 400
HEIGHT = 500

 These constants control the difficulty of the game

GAP = 130
GRAVITY = 0.3
FLAP_STRENGTH = 6.5
SPEED = 3

 bird 

bird = Actor(\'bird1\', (75, 200))
bird.dead = False
bird.score = 0
bird.vy = 0
storage = {}
storage[\'highscore\'] = 0
def reset_pipes():
    # 设置随机的高度
    pipe_gap_y = random.randint(200, HEIGHT - 200)
    pipe_top.pos = (WIDTH, pipe_gap_y - GAP // 2)
    pipe_bottom.pos = (WIDTH, pipe_gap_y + GAP // 2)
pipe_top = Actor(\'top\', PerfectMoney下载anchor=(\'left\', \'bottom\'))
pipe_bottom = Actor(\'bottom\', anchor=(\'left\', \'top\'))
reset_pipes()  # Set initial pipe positions.
def update_pipes():
    # 不断的移动柱子
    pipe_top.left -= SPEED
    pipe_bottom.left -= SPEED
    if pipe_top.right < 0:
        reset_pipes()
        if not bird.dead:
            bird.score += 1
            if bird.score > storage[\'highscore\']:
                storage[\'highscore\'] = bird.score
def update_bird():
    # 小鸟下降
    uy = bird.vy
    bird.vy += GRAVITY
    bird.y += (uy + bird.vy) / 2
    bird.x = 75
    # 根据小鸟死亡切换小鸟的造型
    if not bird.dead:
        if bird.vy < -3:
            bird.image = \'bird2\'
        else:
            bird.image = \'bird1\'
    # 判断小鸟死亡： 是否触碰柱子
    if bird.colliderect(pipe_top) or bird.colliderect(pipe_bottom):
        bird.dead = True
        bird.image = \'birddead\'
    # 小鸟超过边界 初始化
    if not 0 < bird.y < 720:
        bird.y = 200
        bird.dead = False
        bird.score = 0
        bird.vy = 0
        reset_pipes()
def update():
    update_pipes()
    update_bird()

 按下任意键， 小鸟上升

def on_key_down():
    if not bird.dead:
        bird.vy = -FLAP_STRENGTH

 

def draw():
    # 背景图片
    screen.blit(\'background\', (0, 0))
    # 加载小鸟/柱子
    pipe_top.draw()
    pipe_bottom.draw()
    bird.draw()
    # 显示分数和最佳
    screen.draw.text(
        str(bird.score),
        color=\'white\',
        midtop=(WIDTH // 2, 10),
        fontsize=70,
        shadow=(1, 1)
    )
    screen.draw.text(
        "Best: {}".format(storage[\'highscore\']),
        color=(200, 170, 0),
        midbottom=(WIDTH // 2, HEIGHT - 10),
        fontsize=30,
        shadow=(1, 1)
    )
pgzrun.go()