教你用Python写一个水果忍者小游戏

import pygame, sys
    import os
    import random

# 游戏窗口
    WIDTH = 800
    HEIGHT = 500
    FPS = 15             # gameDisplay的帧率，1/12秒刷新一次
    pygame.init()
    pygame.display.set_caption('水果忍者') # 标题
    gameDisplay = pygame.display.set_mode((WIDTH, HEIGHT)) # 固定窗口大小
    clock = pygame.time.Clock()
    # 用到的颜色
    WHITE = (255,255,255)
    BLACK = (0,0,0)
    RED = (255,0,0)
    GREEN = (0,255,0)
    BLUE = (0,0,255)
    background = pygame.image.load('背景.jpg') # 背景
    font = pygame.font.Font(os.path.join(os.getcwd(), 'comic.ttf'), 42) # 字体
    score_text = font.render('Score : ' + str(score), True, (255, 255, 255)) # 得分字体样式

def generate_random_fruits(fruit):
        fruit_path = "images/" + fruit + ".png"
        data[fruit] = {
            'img': pygame.image.load(fruit_path),
            'x' : random.randint(100,500),
            'y' : 800,
            'speed_x': random.randint(-10,10),
            'speed_y': random.randint(-80, -60),
            'throw': False,
            't': 0,
            'hit': False,
        }
        if random.random() >= 0.75:
            data[fruit]['throw'] = True
        else:
            data[fruit]['throw'] = False
    data = {}
    for fruit in fruits:
        generate_random_fruits(fruit)

font_name = pygame.font.match_font('comic.ttf')
    def draw_text(display, text, size, x, y):
        font = pygame.font.Font(font_name, size)
        text_surface = font.render(text, True, WHITE)
        text_rect = text_surface.get_rect()
        text_rect.midtop = (x, y)
        gameDisplay.blit(text_surface, text_rect)

# 绘制玩家的生命
    def draw_lives(display, x, y, lives, image) :
    for i in range(lives) :
    img = pygame.image.load(image)
    img_rect = img.get_rect()
    img_rect.x = int(x + 35 * i)
    img_rect.y = y
    display.blit(img, img_rect)
    def hide_cross_lives(x, y):
    gameDisplay.blit(pygame.image.load("images/red_lives.png"), (x, y))

def show_gameover_screen():
        gameDisplay.blit(background, (0,0))
        draw_text(gameDisplay, "FRUIT NINJA!", 90, WIDTH / 2, HEIGHT / 4)
        if not game_over :
            draw_text(gameDisplay,"Score : " + str(score), 50, WIDTH / 2, HEIGHT /2)
        draw_text(gameDisplay, "Press a key to begin!", 64, WIDTH / 2, HEIGHT * 3 / 4)
        pygame.display.flip()
        waiting = True
        while waiting:
            clock.tick(FPS)
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                if event.type == pygame.KEYUP:
                    waiting = False

first_round = True
    game_over = True        
    game_running = True    
    while game_running :
        if game_over :
            if first_round :
                show_gameover_screen()
                first_round = False
            game_over = False
            player_lives = 3
            draw_lives(gameDisplay, 690, 5, player_lives, 'images/red_lives.png')
            score = 0
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_running = False
        gameDisplay.blit(background, (0, 0))
        gameDisplay.blit(score_text, (0, 0))
        draw_lives(gameDisplay, 690, 5, player_lives, 'images/red_lives.png')
        for key, value in data.items():
            if value['throw']:
                value['x'] += value['speed_x']
                value['y'] += value['speed_y']
                value['speed_y'] += (1 * value['t'])
                value['t'] += 1
                if value['y'] <= 800:
                    gameDisplay.blit(value['img'], (value['x'], value['y']))
                else:
                    generate_random_fruits(key)
                current_position = pygame.mouse.get_pos()
                if not value['hit'] and current_position[0] > value['x'] and current_position[0] < value['x']+60 \
                        and current_position[1] > value['y'] and current_position[1] < value['y']+60:
                    if key == 'bomb':
                        player_lives -= 1
                        if player_lives == 0:
                            hide_cross_lives(690, 15)
                        elif player_lives == 1 :
                            hide_cross_lives(725, 15)
                        elif player_lives == 2 :
                            hide_cross_lives(760, 15)
                        if player_lives < 0 :
                            show_gameover_screen()
                            game_over = True
                        half_fruit_path = "images/explosion.png"
                    else:
                        half_fruit_path = "images/" + "half_" + key + ".png"
                    value['img'] = pygame.image.load(half_fruit_path)
                    value['speed_x'] += 10
                    if key != 'bomb' :
                        score += 1
                    score_text = font.render('Score : ' + str(score), True, (255, 255, 255))
                    value['hit'] = True
            else:
                generate_random_fruits(key)
        pygame.display.update()
        clock.tick(FPS)
    pygame.quit()