Pygame 游戏地图的碰撞

如何解决Pygame 游戏地图的碰撞

我正在尝试在 Pygame 中制作迷宫游戏，但无法实现阵列中 1（迷宫墙）的碰撞。我试图将碰撞检测放在创建地图的循环中，但它不起作用。我还将碰撞检测放在主循环中，但只有左上角的矩形检测到碰撞，而不是所有 1 个矩形。我将如何解决这个问题？谢谢！

import pygame
pygame.init()

screen = pygame.display.set_mode((700,700))
pygame.display.set_caption("Game")

speed = 20
x = 200
y = 600


def game_map():

    global rect_one
    surface = pygame.Surface((100,100),pygame.SRCALPHA)
    rect_one = pygame.draw.rect(surface,(0,255),50,50)) 

    global rect_two
    surface_one = pygame.Surface((80,80),pygame.SRCALPHA)
    rect_two = pygame.draw.rect(surface_one,(255,255,50)) 

    tileX = 0
    tileY = 0

    global tile_list
    tile_list = []
    map = [
            [1,1,1],[1,1]
            ]

    for y,row in enumerate(map):
        tileX = 0
        for x,cell in enumerate(row):
            image = surface if cell == 1 else surface_one
            screen.blit(image,[x*50,y*50]) 
            tile_list.append(rect_one)
    pygame.display.update() 


def player():
    player = pygame.draw.rect(screen,0),(x,y,20,20))   

    for i in tile_list:
        if player.colliderect(i):
            print("hello")

loop = True

while loop:
    pygame.time.delay(100)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            loop = False

    #player controls
    keys = pygame.key.get_pressed()
    
    if keys[pygame.K_LEFT]:
        x -= speed
    if keys[pygame.K_RIGHT]:
        x += speed
    if keys[pygame.K_UP]:
        y -= speed
    if keys[pygame.K_DOWN]:
        y += speed

    screen.fill((255,255))
    game_map()
    player()
    pygame.display.update()


pygame.quit()

解决方法

您的 tile_list 多次只包含一个 Rect。

我稍微简化了您的代码，并为地图中的每个 Rect 使用了带有正确坐标的 1。另请注意评论：

import pygame
pygame.init()

screen = pygame.display.set_mode((700,700))
pygame.display.set_caption("Game")

speed = 10
player_x = 200
player_y = 600

# Use a constant. There's not need to make big Surfaces and then draw a smaller rect on them to create the map.
TILESIZE = 50

tile_list = []
map = [
        [1,1,1],[1,1]
        ]

# let's create a single Surface for the map and reuse that
grid = pygame.Surface((len(map[0]) * TILESIZE,len(map) * TILESIZE),pygame.SRCALPHA)
for y,row in enumerate(map):
    for x,cell in enumerate(row):

        # if we want a wall,we draw it on the new Surface
        # also,we store the Rect in the tile_list so collision detection works
        if cell:
            rect = pygame.draw.rect(grid,'blue',(x*TILESIZE,y*TILESIZE,TILESIZE,TILESIZE))
            tile_list.append(rect)

loop = True
clock = pygame.time.Clock()
while loop:
    clock.tick(60)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            loop = False

    #player controls
    keys = pygame.key.get_pressed()

    if keys[pygame.K_LEFT]:
        player_x -= speed
    if keys[pygame.K_RIGHT]:
        player_x += speed
    if keys[pygame.K_UP]:
        player_y -= speed
    if keys[pygame.K_DOWN]:
        player_y += speed

    screen.fill((255,255,255))

    # draw the map surface to the screen
    screen.blit(grid,(0,0))
    player = pygame.draw.rect(screen,(255,0),(player_x,player_y,20,20))   

    # now collision detection works because for each 1 in the map
    # there's a Rect in tile_list with the correct coordinates
    for i in tile_list:
        if player.colliderect(i):
            print("colliding")
            break
    else:
        print('not colliding')
        
    pygame.display.update()


pygame.quit()

,

在移动之前保存玩家的位置：

pos = x,y

计算玩家移动后的row和column：

row = y // 50
column = x // 50

如果新位置在墙上，则重置玩家的位置：

if map[row][column] == 1:
    x,y = pos

此外，您必须将 map 变量移动到全局命名空间。 speed 应该是图块大小的整数分隔符。将起始位置更改为网格中的某个位置：

speed = 25
x = 50
y = 50

---

完整代码：

import pygame
pygame.init()

screen = pygame.display.set_mode((700,700))
pygame.display.set_caption("Game")

speed = 25
x = 50
y = 50

map = [
    [1,1]
]

def game_map():

    global rect_one
    surface = pygame.Surface((100,100),pygame.SRCALPHA)
    rect_one = pygame.draw.rect(surface,255),50,50)) 

    global rect_two
    surface_one = pygame.Surface((80,80),pygame.SRCALPHA)
    rect_two = pygame.draw.rect(surface_one,50)) 

    tileX = 0
    tileY = 0
    
    for y,row in enumerate(map):
        tileX = 0
        for x,cell in enumerate(row):
            image = surface if cell == 1 else surface_one
            screen.blit(image,[x*50,y*50]) 
    pygame.display.update() 


def player():
    player = pygame.draw.rect(screen,(x,y,25,25))   

loop = True

while loop:
    pygame.time.delay(100)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            loop = False

    #player controls
    keys = pygame.key.get_pressed()
    
    pos = x,y
    if keys[pygame.K_LEFT]:
        x -= speed
    if keys[pygame.K_RIGHT]:
        x += speed
    if keys[pygame.K_UP]:
        y -= speed
    if keys[pygame.K_DOWN]:
        y += speed

    row = y // 50
    column = x // 50
    if map[row][column] == 1:
        x,y = pos

    screen.fill((255,255))
    game_map()
    player()
    pygame.display.update()

pygame.quit()