Pygame中的圖像與矩形之間的碰撞

Question

我在處理PNG與用戶控制的矩形對象之間的碰撞時遇到了一些問題。如果矩形與牆壁（另一個矩形）相碰撞沒有問題，但是當我嘗試賦予PNG與牆壁相同的功能時，出現錯誤。

sprite_image_filename = 'tails.PNG' 
import pygame 
from pygame.locals import * 


speed = [7, 4] 
e = 1.001 
position=(50,50) 
sprite = pygame.image.load(sprite_image_filename).convert_alpha() 

rect = (sprite.get_rect()) 

wall1 = Block(sort,20, 400) 
wall1.set_position(0,200) 


block_group.add(a_block, wall1)  

running=True 
while running: 
    for event in pygame.event.get(): 
     if event.type == QUIT: 
      pygame.quit() 
      sys.exit() 
    if event.type == pygame.MOUSEMOTION : 
     mouse_position = pygame.mouse.get_pos() 
     a_block.set_position(mouse_position[0],mouse_position[1]) 
    clock.tick(frames_per_second) 
    window.fill(a) 
    #here 
    rect = rect.move(speed) 

    if rect.left < 0 or rect.right > 380: 
     speed[0] = -speed[0] * e 
     pygame.display.update() 
    if rect.top < 0 or rect.bottom > 370: 
     speed[1] = -speed[1] * e 
     pygame.display.update() 
    window.blit(sprite, rect) 
    pygame.display.update() 
    #here 



    if pygame.sprite.collide_rect(a_block, sprite) or pygame.sprite.collide_rect(a_block,wall1): 
     time_string = "Du overlevede {} sekunder".format(pygame.time.get_ticks()/1000) 
     text = font.render(time_string, True, sort) 

     pygame.display.update() 
     pygame.time.wait(5000) 
     running = False 


    block_group.draw(window) 
    pygame.display.update()#opdater skærmen 



pygame.quit() 

該錯誤的回溯是：

回溯（最近通話最後一個）： 文件 「C：\ Python33 \ eskappa1.py」，線路105，在 如果pygame.sprite .collide_rect（a_block，子畫面）或pygame.sprite.collide_rect（a_block，wall1）

File "C:\Python33\lib\site-packages\pygame\sprite.py", line 1300, in collide_rect 
    return left.rect.colliderect(right.rect) 
AttributeError: 'pygame.Surface' object has no attribute 'rect' 

sprite_image_filename = 'tails.PNG' 
sprite2_image_filename = 'block 2.PNG' 
sprite3_image_filename = 'block 3.PNG' 
sprite4_image_filename = 'block 4.PNG' 

import pygame 
from pygame.locals import * 
r=(255,0,0) 
b=(0,0,255) 
sort =(0,0,0) 
class Block(pygame.sprite.Sprite): 
    def __init__(self, color=b, width= 40, height= 40): 
     super(Block, self).__init__() 
     self.image = pygame.Surface((width, height)) 
     self.image.fill(color) 
     self.rect = self.image.get_rect() 
     self.origin_x=self.rect.centerx 
     self.origin_y=self.rect.centery 

    def set_position(self, x, y): 
     self.rect.x=x-self.origin_x 
     self.rect.y=y-self.origin_y 
pygame.init() 

pygame.display.set_caption("EsKappa!") 

window_size =window_width, window_height = 400, 400 
window = pygame.display.set_mode(window_size) 

a=(0,201,0) 


clock = pygame.time.Clock() 
frames_per_second = 30 

block_group = pygame.sprite.Group() 

a_block= Block(b) 
a_block.set_position(window_width/2 -30, window_height/2) 

speed = [7, 4] 
e = 1.01 
position=(50,50) 
sprite = pygame.image.load(sprite_image_filename).convert_alpha() 
sprite2= pygame.image.load(sprite2_image_filename).convert_alpha() 
sprite3= pygame.image.load(sprite2_image_filename).convert_alpha() 
sprite4= pygame.image.load(sprite2_image_filename).convert_alpha() 
rect = (sprite.get_rect()) 
rect2 = sprite2.get_rect() 
rect3 = sprite2.get_rect() 
rect4 = sprite2.get_rect() 



wall1 = Block(sort,20, 400) 
wall1.set_position(0,200) 
wall2= Block(sort,400, 20) 
wall2.set_position(200,0) 
wall3=Block(sort,20, 400) 
wall3.set_position(400,200) 
wall4=Block(sort,400, 20) 
wall4.set_position(200,400) 


block_group.add(a_block, wall1,wall2,wall3,wall4) 


b2=(270, 70) 
b3=(80,20) 
b4=(70, 250) 

h=pygame.time.get_ticks()/1000 
font = pygame.font.SysFont("Times New Roman", 20) 
font2 = pygame.font.SysFont("Times New Roman", 50) 
text = font.render("Time", False, sort) 
#lukke funktion 
running=True 
while running: 
    for event in pygame.event.get(): 
     if event.type == QUIT: 
      pygame.quit() 
      sys.exit() 
    if event.type == pygame.MOUSEMOTION : 
     mouse_position = pygame.mouse.get_pos() 
     a_block.set_position(mouse_position[0],mouse_position[1]) 
    clock.tick(frames_per_second) 
    window.fill(a) 
    #here 
    rect = rect.move(speed) 

    if rect.left < 0 or rect.right > 380: 
     speed[0] = -speed[0] * e 
     pygame.display.update() 
    if rect.top < 0 or rect.bottom > 370: 
     speed[1] = -speed[1] * e 
     pygame.display.update() 
    window.blit(sprite, rect) 
    #window.blit(sprite2, rect) 
    #window.blit(sprite3, rect) 
    #window.blit(sprite4, rect) 
    pygame.display.update() 
    #here 



    if pygame.sprite.collide_rect(a_block, wall1) or pygame.sprite.collide_rect(a_block, wall2) or pygame.sprite.collide_rect(a_block, wall3) or pygame.sprite.collide_rect(a_block, wall4): 
     time_string = "Du overlevede {} sekunder".format(round(pygame.time.get_ticks()/1000 -0.225)) 
     text = font.render(time_string, True, sort) 
     window.blit(text, (window_width/2-100, window_height/2-100)) 
     if pygame.time.get_ticks()/1000>10: 
      time_string1 = "Flot!" 
      text = font2.render(time_string1, True, sort) 
      window.blit(text, (20, 20)) 
     else: 
      time_string2 = "Ikke så godt :c" 
      text = font2.render(time_string2, True, sort) 
      window.blit(text, window.blit(text, (20, 20))) 
     pygame.display.update() 
     pygame.time.wait(5000) 
     running = False 


    block_group.draw(window) 
    pygame.display.update()#opdater skærmen 



pygame.quit() 

Answer 1

錯誤消息很明顯。

您致電left.rect.colliderect(right.rect)，但right是pygame.Surface並且沒有任何屬性rect。

注意您如何在Block類使用rect屬性：

class Block(pygame.sprite.Sprite): 
    def __init__(self, color=b, width= 40, height= 40): 
     super(Block, self).__init__() 
     ... 
     self.rect = self.image.get_rect() 
     ... 

但pygame.Surface本身並無rect屬性。

要麼通過只包含一個rect屬性對象的功能，或者使用多態，並添加get_rect()功能您Block類，並使用你的函數，函數，它的碰撞檢測，以便它同時適用於Block和Surface對象。