时间戳

首页 > 解决方案 > 使用基于地图的碰撞检测 Pygame 滚动背景

python - 使用基于地图的碰撞检测 Pygame 滚动背景

问题描述

我正在创建一个使用地图进行碰撞的游戏，这一切都有效，直到我尝试将滚动添加到游戏中。它应该让背景而不是玩家移动，它确实如此，但问题在于碰撞检测。

每个碰撞点的大小从 16 x 16 变为 1 x 1。事实证明，这是非常有问题的，任何修复它的帮助将不胜感激

我尝试更改玩家的碰撞值、屏幕尺寸，但最后我不确定这个问题的确切原因是什么，我最好的猜测是我移除了玩家的移动，而是让它保持在相同的位置在屏幕上，已经导致碰撞如何随着位置的变化而发生问题，但这并不能解释碰撞点的缩小。

import pygame, sys

clock = pygame.time.Clock()

from pygame.locals import *
pygame.init() # initiates pygame

pygame.display.set_caption('The Game')

WINDOW_SIZE = (600,400)

screen = pygame.display.set_mode(WINDOW_SIZE,0,32)

display = pygame.Surface((300,200))

moving_right = False
moving_left = False
moving_up = False
moving_down = False

game_map = [['2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2'],
           ['2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2'],
           ['2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'],
           ['2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2'],
           ['2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2','2'],
           ['0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0']]

player_rect = pygame.Rect(100,100,16,16)
black = (45,45,45)
black1 = (60,60,60)

def collision_test(rect,tiles):
   hit_list = []
   for tile in tiles:
       if rect.colliderect(tile):
           hit_list.append(tile)
   return hit_list

def move(rect,movement,tiles):
   collision_types = {'top':False,'bottom':False,'right':False,'left':False}
   rect.x += movement[0]
   hit_list = collision_test(rect,tiles)
   for tile in hit_list:
       if movement[0] > 0:
           rect.right = tile.left
           collision_types['right'] = True
       elif movement[0] < 0:
           rect.left = tile.right
           collision_types['left'] = True
   rect.y += movement[1]
   hit_list = collision_test(rect,tiles)
   for tile in hit_list:
       if movement[1] > 0:
           rect.bottom = tile.top
           collision_types['bottom'] = True
       elif movement[1] < 0:
           rect.top = tile.bottom
           collision_types['top'] = True
   return rect, collision_types

while True:
   display.fill((155,155,155))
   tile_rects = []
   y = 0
   for layer in game_map:
       x = 0
       for tile in layer: # tiles
           if tile == '2':
               pygame.draw.rect(display,black,(x*16-player_rect.x,y*16-player_rect.y,16,16))
           if tile != '0':
               tile_rects.append(pygame.Rect(x*16-player_rect.x,y*16-player_rect.y,16,16))
           x += 1
       y += 1

   player_movement = [0,0]
   if moving_right == True:
       player_movement[0] += 2
   if moving_left == True:
       player_movement[0] -= 2
   if moving_up == True:
       player_movement[1] -= 2
   if moving_down == True:
       player_movement[1] += 2
   player_rect,collisions = move(player_rect,player_movement,tile_rects)

   pygame.draw.rect(display,black1,(142,100,16,16)) #replacing the 142 and 100 with the rect.x and y, and remove the rect.x and y from the tiles, will make it work like the original


   for event in pygame.event.get(): # event loop
       if event.type == QUIT:
           pygame.quit()
           sys.exit()
       if event.type == KEYDOWN:
           if event.key == K_RIGHT:
               moving_right = True
           if event.key == K_LEFT:
               moving_left = True
           if event.key == K_UP:
               moving_up = True
           if event.key == K_DOWN:
               moving_down = True
       if event.type == KEYUP:
           if event.key == K_RIGHT:
               moving_right = False
           if event.key == K_LEFT:
               moving_left = False
           if event.key == K_UP:
               moving_up = False
           if event.key == K_DOWN:
               moving_down = False
   screen.blit(pygame.transform.scale(display,WINDOW_SIZE),(0,0))
   pygame.display.update()
   clock.tick(60)

我的预期结果是碰撞点不会改变并保持 16 x 16，不幸的是，瓷砖的碰撞点已经缩小到 1 x 1，导致很多问题。

标签： pythonpygame

解决方案

您的代码有点难以理解，但我知道问题出在哪里。

在您的move函数中，您更改 的坐标player_rect以使其移动。但是当你画它时 ( pygame.draw.rect(display,black1,(142,100,16,16))) 你把它画在中心。因此，您绘制的内容与测试的运动内容之间存在不匹配。

老实说，如果不更改大量代码，我无法找到解决它的方法。
如果您想保持背景滚动，请考虑不要移动玩家，而是向相反方向移动瓷砖。我的意思是，如果玩家向左移动，则向右移动瓷砖，依此类推。
目前，您正在每次迭代创建切片。我建议在主循环之外创建它们，并在循环中移动它们（编辑它们的坐标rect）。

推荐阅读