如何移动pygame rect?

时间:2018-03-01 18:44:31

标签: python python-3.x pygame

当我运行下面的代码时,pygame rect不会移动。它设置为在每个左箭头按下时沿x方向移动-7,但没有任何反应。我试图打印矩形的位置,看起来它的位置从初始位置300更新到293,尽管屏幕上没有移动。非常感谢任何帮助!

import sys
import pygame

PINK = (255, 102, 255)
BLACK = (0, 0, 0)

pygame.init()
clock = pygame.time.Clock()
pygame.display.init()

font = pygame.font.SysFont("impact", 20)


screen = pygame.display.set_mode(750, 550)

class Paddle:
    def __init__(self):
        self.paddle = pygame.Rect(300, 730,
                                  10,
                                  52)

    def draw_paddle(self):
        # Draw paddle
        pygame.draw.rect(screen, PINK,
                         self.paddle)

    def move_paddle_left(self):
        key = pygame.key.get_pressed()
        if key[pygame.K_LEFT]:
            self.paddle.left -= 7
            if self.paddle.left < 0:
                self.paddle.left = 0
            print(self.paddle)


class Game:
    def __init__(self):
        self.run()
        Paddle()
        # Levels().draw_level_one()
    def run(self):
        while 1:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    sys.exit()
            # fps lock, screen fill and method call for input
            clock.tick(60)
            screen.fill(BLACK)
            Paddle().draw_paddle()
            Paddle().move_paddle_left()
            pygame.display.flip()
# Creates instance of the game class, and runs it
if __name__ == "__main__":
    Game()
    Game().run()

1 个答案:

答案 0 :(得分:1)

虽然我无法让你的代码实际绘制一个paddle,但我注意到你在循环的每次迭代中都创建了一个新的Paddle实例,因此每次位置都会重置为300.

请改为尝试:

// HTML
<div class="container">
    <div class="img first-background"></div>
    <div class="img second-background"></div>
    <div class="img third-background"></div>
</div>

// CSS
.img{
    width: 100%;
    height: 33vh; // vh means ViewHeight, 33% of your window height
    background-size: cover;
    background-position: center;
}

.first-background{ background-image: url('/a-link-to-your-image.jpg') }
.second-background{ background-image: url('/a-second-link-to-your-image.jpg') }
.third-background{ background-image: url('/a-third-link-to-your-image.jpg') }

这样你就可以创建一个paddle对象,然后在每次迭代中重复使用它的值,并且它会一直向左移动直到它达到0。