麻烦的pygame事件循环

时间:2014-05-21 23:34:40

标签: python pygame

Pygame新手在这里,我正在尝试制作Flappy Bird克隆。我想设置控件,以便按住跳键不会让鸟跳。与原始游戏一样,玩家必须继续点击跳跃以保持鸟类漂浮。我尝试使用pygame.key.set_repeat()来关闭键重复,但它似乎没有工作。通过回顾关于同一主题的其他帖子,我开始认为它可能是我的事件循环中的一个问题。

谢谢你的帮助!

我的代码:

import pygame

class Bird(pygame.sprite.Sprite):
    def __init__(self):
        #load pic of bird
        self.image = pygame.image.load('ball.png')
        #sets bird pic as a rectangle object and moves position to centre
        self.rect = pygame.rect.Rect((320, 240), self.image.get_size())

        #default value for gravity
        self.dy = 0 #how much to add to current player position

    def update(self, dt, game):
        pygame.key.set_repeat()
        key = pygame.key.get_pressed()
        if key[pygame.K_UP]:
            print "jump!!!"
            self.dy = -400

        #apply gravity
        self.dy = min(400, self.dy + 40)
        self.rect.y += self.dy * dt

        #collision detection
        if(self.rect.top <= 0):   #top
            self.rect.y = 0
            self.dy = -4
        elif(self.rect.bottom >= 480):   #ground
            self.rect.y = (480-self.rect.width)

        #blit image to screen
        screen.blit(self.image, (320, self.rect.y))
        pygame.display.flip()

        print self.rect.center
        print self.dy

class Ground(pygame.sprite.Sprite):
    def __init__(self):
        self.image = pygame.image.load('ground.png')
        self.rect = pygame.rect.Rect((0, 480-self.image.get_width()), self.image.get_size())



class Game(object):
    def main(self, screen):
        clock = pygame.time.Clock()

        #create background and player object
        background = pygame.image.load('background.png')
        #instantiate bird object
        self.bird = Bird()
        self.ground = Ground()

        while 1:

            dt = clock.tick(30)

            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    return
                if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
                    return

            screen.blit(background, (0, 0))
            pygame.display.flip()
            self.bird.update(dt / 1000., self)  #for some reason, update must go last


if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((640, 480))
    Game().main(screen)
    pygame.quit()

1 个答案:

答案 0 :(得分:2)

pygame.key.set_repeat()在这里没有任何改变,因为默认情况下禁用了键重复。

你的错误很简单:你的程序检查&#34; update()&#34;方法,如果K_UP 当前按下 - 但您应该只检查事件,因为按钮被事件拦截。

简而言之:事件告诉您是否按下了键并且&#34; get_pressed()&#34;告诉我是否按下

所以你必须编写类似&#34; jump()&#34;的方法。当你按下K_UP接收事件时执行它 - 不检查内部的键状态&#34;更新()&#34;方法。并且不要忘记从&#34; update()&#34;删除跳转代码方法!

class Bird(pygame.sprite.Sprite):

    def jump(self):
        print "jump!!!"
        self.dy = -400

(...)

for event in pygame.event.get():
    if event.type == pygame.QUIT:
        return
    if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
        return
    if event.type == pygame.KEYDOWN and event.key == pygame.K_UP:
        self.bird.jump()