blit pygame 中的图像数组

编程问答 2022-04-30

问题描述

我正在做一个简单的游戏，我想在随机位置显示一些带有各自矩形的 img，这是我的代码：

class Juego1:
    def __init__(self,next_scene):
        self.background = pygame.Surface(size)
        self.imagenes1_array = ['autobus.png','coche.png','barco.png','autobus2.png','grua.png','bici.png']
        for i in self.imagenes1_array:
            self.imagenes1 = pygame.image.load(i)
            self.imagenes1_rect = self.imagenes1.get_rect()
            self.imagenes1_rect = self.imagenes1_rect.move(random.randint(0,1600),random.randint(0,900))
        
    def start(self,gamestate):
        self.gamestate = gamestate
        
       
    def draw(self,screen):
        self.background = pygame.Surface(size)
        x = random.randint(0,1600)
        y = random.randint(0,900)
        coordinates = (x,y)
        for i in self.imagenes1_array:
            imagenes1 = pygame.image.load(i).convert()
            screen.blit(imagenes1,x,y)

    
    def update(self,events,dt):
        for event in events:
            if event.type == pygame.MOUSEBUTTONDOWN:
                if event.type == pygame.MOUSEBUTTONDOWN:
                    return (self.next_scene,None)

但它不断向我发送此错误： blit 的目标位置无效

我做错了什么？ 另外，我不知道我想显示图像数组的 img 加载和矩形的方式很好，所以让我知道谢谢

完整代码如下：

# Importamos las librerías necesarias
import sys,pygame,pygame.freetype,random
from pygame.locals import *

size = 1600,900

# Colours    R    G    B
GRAY     = (100,100,100)
NAVYBLUE = ( 60,60,100)
BLACK    = (  0,0)
WHITE    = (255,255,255)
RED      = (255,0)
GREEN    = (  0,0)
BLUE     = (  0,255)
YELLOW   = (255,0)
ORANGE   = (255,128,0)
PURPLE   = (127,255)
CYAN     = (  0,255)

class PrimeraEscena:

    def __init__(self,next_scene):
        self.background = pygame.Surface(size)

        self.flechaimg = pygame.image.load('flecha.png')
        self.flechaimg_rect = self.flechaimg.get_rect()
        self.flechaimg_rect = self.flechaimg_rect.move(1300,600)

        self.next_scene = next_scene
        
    def draw(self,screen):
        font = pygame.font.SysFont("comicsansms",90)
        img = font.render('Memory',True,PURPLE)
        screen.blit(img,(620,400)) 
        screen.blit(self.flechaimg,(1300,600))
    
    def update(self,dt):
        for event in events:
            if event.type == pygame.MOUSEBUTTONDOWN:
                mouse_pos = event.pos
                if self.flechaimg_rect.collidepoint(mouse_pos):
                    return (self.next_scene,None)


class Juego1:
    def __init__(self,next_scene):
        self.background = pygame.Surface(size)
        
        self.images = []
        self.rects = []
        self.imagenes1_array = ['autobus.png','bici.png']
        for i in self.imagenes1_array:
            self.images.append(pygame.image.load(i))
            s = pygame.Surface((20,20))
            self.rects.append(s.get_rect())

        print(self.images)
        print(self.imagenes1_array)
        

    def start(self,gamestate):
        self.gamestate = gamestate
        for rect in self.rects:
            x = random.randint(300,1000)
            y = random.randint(200,700)
            rect.x = x
            rect.y = y
        
       
    def draw(self,screen):
        self.background = pygame.Surface(size)
        
        for i in range(len(self.images)):
            screen.blit(self.images[i],(self.rects[i].x,self.rects[i].y))
        
    
    def update(self,dt):
        for event in events:
            if event.type == pygame.MOUSEBUTTONDOWN:
                for rect in self.rects:
                    if rect.collidepoint(event.pos):
                        print('works!')

def main():
    # Inicializamos pygame
    pygame.init()
    
    # Definimos las dimensiones de la ventana (1600 x 900px) y reloj
    screen = pygame.display.set_mode(size)
    clock = pygame.time.Clock()

    # Ponemos el título e icono y fondo de la ventana
    pygame.display.set_caption("Quiz Game")
    icon = pygame.image.load('icon.png')
    pygame.display.set_icon(icon)
    fondoImg = pygame.image.load('fondo_memory.png')

    dt = 0
    scenes = {
        'PORTADA': PrimeraEscena('SEGUNDA'),'SEGUNDA': Juego1('SEGUNDA'),}
    scene = scenes['PORTADA']
    # Comenzamos el bucle del juego
    run=True
    while run:
        # RGB - Red,Green,Blue
        screen.fill ((255,255))
        
        # Imagen fondo
        screen.blit(fondoImg,(0,0))

        # Eventos del mouse 
        events = pygame.event.get()

        # Capturamos los eventos que se han producido
        for event in events:
            
            # Definimos eventos:
            if event.type == pygame.QUIT: # Si el evento es salir de la ventana,terminamos
                run = False
            
        result = scene.update(events,dt)
        if result:
            next_scene,state = result
            if next_scene:
                scene = scenes[next_scene]
                scene.start(state)
        scene.draw(screen)
        pygame.display.flip()
        dt = clock.tick(60)
        #pygame.display.update()
   

if __name__ == '__main__':
    main()

解决方法

第二个参数 oh pygame.Surface.blit 是一对坐标（例如元组或列表）与位置：

screen.blit(imagenes1,x,y)

screen.blit(imagenes1,(x,y))
,

您没有将加载的图像存储到列表中，您只需调用加载，分配它，然后再去。您不应该在绘图中加载图像。在 init 中将它们加载到列表中，然后在 draw 中遍历列表。

初始化：

self.images = []
self.imagenes1_array = ['autobus.png','coche.png','barco.png','autobus2.png','grua.png','bici.png']
        for i in self.imagenes1_array:
            self.images.append(pygame.image.load(i))

画：

def draw(self,screen):
        self.background = pygame.Surface(size)
        x = random.randint(0,1600)
        y = random.randint(0,900)
        coordinates = (x,y)
        for i in self.images:
            screen.blit(i,y))
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