如何让图像在屏幕上移动,然后让它在python中消失?

时间:2013-12-04 02:57:59

标签: python pygame

我在编程类的介绍中,我们必须使用pygame制作我们的owm游戏。我希望我的游戏成为一个试图避免掉落物体的人。我已经让这个男人移动,但我无法弄清楚一个得分系统以及如何让图像下降然后消失。这就是我所拥有的:

import pygame             
import os,sys               
from pygame.locals import *

green = (0,255,0)

white = (255,255,255)

red = (255,0,0)

black = (0,0,0)


def draw_stick_figure(screen,x,y):

    # Head
    pygame.draw.ellipse(screen,black,[1+x,y,10,10],0)

    # Legs
    pygame.draw.line(screen,black,[5+x,17+y],[10+x,27+y],2)
    pygame.draw.line(screen,black,[5+x,17+y],[x,27+y],2)

    # Body
    pygame.draw.line(screen,green,[5+x,17+y],[5+x,7+y],2)

    # Arms
    pygame.draw.line(screen,green,[5+x,7+y],[9+x,17+y],2)
    pygame.draw.line(screen,green,[5+x,7+y],[1+x,17+y],2)

pygame.init()

size = [700,500]

screen = pygame.display.set_mode(size)


x_coord=350

y_coord=250


x_speed=0

y_speed=0

done = False

clock=pygame.time.Clock()

while done == False:

    for event in pygame.event.get():

        if event.type == pygame.QUIT:

            done = True

        elif event.type == pygame.KEYDOWN:

            if event.key == pygame.K_LEFT:

                x_speed = -3

            elif event.key == pygame.K_RIGHT:

                x_speed = 3

            elif event.key == pygame.K_UP:

                y_speed = -3

            elif event.key == pygame.K_DOWN:

                y_speed = 3

        elif event.type == pygame.KEYUP:

            if event.key == pygame.K_LEFT:

                x_speed = 0

            elif event.key == pygame.K_RIGHT:

                x_speed = 0

            elif event.key == pygame.K_UP:

                y_speed = 0

            elif event.key == pygame.K_DOWN:

                y_speed = 0



    x_coord = x_coord + x_speed

    y_coord = y_coord + y_speed


    screen.fill(red)


    draw_stick_figure(screen,x_coord,y_coord)


    pygame.display.flip()

    clock.tick(20)
pygame.quit()

2 个答案:

答案 0 :(得分:2)

你可以做的是使用精灵类

为这样的块创建一个类:

from pygame.locals import *
import pygame
import os
#added spaces show up as part of the code

class Block(pygame.sprite.Sprite):
    def __init__(self, pos):

        #make it a sprite
        pygame.sprite.Sprite.__init__(self)

        #create a rect at position (pos) that is 25 by 25 pixels
        self.image = pygame.Rect(pos[0], pos[1] 25, 25)

        #make the rect a class variable that can be moved
        self.rect = self.image.get_rect()

   def update(self):
       #move rect 20 pixels each update (can be adjusted)
       self.rect.y += 20
       #if it goes to to the bottom of the screen delete it
       if self.rect.y > screen_height:
           self.kill()

然后创建一个这样的块:

block = Block([20, 20])

然后绘制它并在主循环中更新它,如下所示:

block.update()
block.draw()

你可以使用精灵组创建多个会掉落的块:

block_list = pygame.sprite.Group()
for i in xrange(10):
    block = Block([i,i])
    block_list.add(block)

现在你可以用同样的方式更新整个组:

block_list.draw()
block_list.update()

你应该对玩家做同样的事情并使用图像而不是用线条绘制他

the Sprite class

the Rect class

对不起,如果我不知所措,一开始很难,但学习非常有用

祝你好运:)

答案 1 :(得分:0)

加载图片。设置图片xyy_speed。更改主循环中的图像位置。如果图片y大于屏幕高度,请将图片y设置为0以再次使用它。使用pygame.Rect()用于图像和播放器,您可以使用pygame.rect.collision_rect()来检测碰撞玩家和图像并更改分数。

等等。