如何在 Pygame 中连续移动图像 [英] How to continuously move an image in Pygame
问题描述
我有一个使用 Pygame 库用 Python 制作的游戏.在其中,我有两个类,一个是 Main 类,它使屏幕出现,图像闪烁等.Monster 类,它创建和渲染我的怪物精灵,它们是:
I have a game I am making in Python with the Pygame library. In it, I have two classes, the Main class, which causes the screen to appear, blits the images, etc. and the Monster class, which creates and renders my monster sprites, here they are:
主类:
import pygame, sys, random
from monster import *
pygame.init()
class Main:
clock = pygame.time.Clock()
screenSize = (500,500)
background = pygame.image.load("C:/Users/Nathan/PycharmProjects/Monsters II A Dark Descent/images/background.jpg")
screen = pygame.display.set_mode(screenSize)
pygame.display.set_caption("MONSTERS!")
monsters = pygame.sprite.Group()
counter = 0
x = 450
while counter < 5:
y = random.randint(50,450)
monster = Monster(x,y)
monsters.add(monster)
counter = counter + 1
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
screen.blit(background,(0,0))
for monster in monsters:
monster.render(screen)
x=x-1 #This doesn't move the sprites
clock.tick(60)
pygame.display.flip()
Main()
怪物类:
import random, pygame
class Monster(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.x = x
self.y = y
self.image = pygame.image.load("C:\Users\Nathan\PycharmProjects\Monsters II A Dark Descent\images\monster.png")
def render(self, screen):
screen.blit(self.image, (self.x, self.y))
我希望怪物连续向左移动一个随机的 x 值,直到它们撞到屏幕的另一侧.在那之后,我希望他们传送回他们的起点,然后再做一次.在主类中,我尝试在主循环中添加x=x+1"以至少让它们移动一个,但它没有用.我还尝试用 "x=x+1" 制作一个不同的循环,但没有用.如果您需要更多详细信息,请告诉我.感谢您抽出宝贵时间.
I want the Monsters to move to the left by a random x value continuously until they hit the other side of the screen. After that happens I want them to teleport back to their starting point and do it again. In the main class, I tried adding "x=x+1" in the main loop to at least get them to move by one but it didn't work. I also tried making a different loop with "x=x+1" which didn't work. If you need more details let me know. Thank you for your time.
推荐答案
您正在修改 x 变量,该变量仅用于创建对象.要修改 Monster 对象的成员,您需要像这样更改它们:
You are modifying the x variable, which was only used to create objects. To modify the members of a Monster object, you want to change them like this:
monster.x += 1
我建议创建一个新函数来移动精灵,并将其重置回原位.一些类似的东西:
I would suggest to create a new function that will move the sprite, and reset it back to position. Something along these lines:
def move(self):
if(self.x > 500):
self.x = 0
self.x += 1
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