Question

我目前正在尝试在pygame上编写一个简单的平台游戏，但是当我尝试将相机功能添加到游戏中时，我遇到了碰撞问题。

这是我的代码：

为了不使问题太大，我会剪切包含移动，碰撞和绘图的代码部分。

Index.py

删除了 init 和setup_tiles函数。

import pygame
from settings import *
from tiles import *
from player import *
from camera import *

pygame.init()


class Window:

  def game_loop(self):

    while not self.crashed:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self.crashed = True

        self.movement()

        self.window.blit(self.background, (0, 0))
        self.all_sprites.clear(self.window, self.background)
        self.player.update(self.all_sprites)
        self.camera.update(self.player)
        self.player.draw(self.window)
        # self.all_sprites.draw(self.window)
        for sprite in self.all_sprites:
            self.window.blit(sprite.image, self.camera.apply(sprite))

        pygame.display.flip()

        self.clock.tick(60)

    quit()
    pygame.quit()

def movement(self):
    keys = pygame.key.get_pressed()

    if keys[pygame.K_w]:
        self.player.velocity_y = -3
        self.player.rect.y += self.player.velocity_y
        for sprite in self.all_sprites:
            if self.player.collide_Y(sprite):
                self.player.rect.y = self.player.rect.y - self.player.velocity_y

    elif keys[pygame.K_s]:
        self.player.velocity_y = 3
        self.player.rect.y += self.player.velocity_y
        for sprite in self.all_sprites:
            if self.player.collide_Y(sprite):
                self.player.rect.y = self.player.rect.y - self.player.velocity_y

    if keys[pygame.K_a]:
        self.player.velocity_x = -3
        self.player.rect.x += self.player.velocity_x
        for sprite in self.all_sprites:
            if self.player.collide_X(sprite):
                self.player.rect.x = self.player.rect.x - self.player.velocity_x

    elif keys[pygame.K_d]:
        self.player.velocity_x = 3
        self.player.rect.x += self.player.velocity_x
        for sprite in self.all_sprites:
            if self.player.collide_X(sprite):
                self.player.rect.x = self.player.rect.x - self.player.velocity_x

window = Window()

window.game_loop()

Tiles.py

import pygame
from settings import *

class Tiles(pygame.sprite.Sprite):

    def __init__(self, file, pos):
        pygame.sprite.Sprite.__init__(self)
        self.bitmap = pygame.image.load(file)
        self.bitmap = pygame.transform.scale(self.bitmap, (TILE_SIZE, TILE_SIZE))
        self.image = pygame.Surface((TILE_SIZE, TILE_SIZE), pygame.HWSURFACE | pygame.SRCALPHA)
        self.image.blit(self.bitmap, (0, 0))
        self.rect = self.image.get_rect()
        self.rect.x, self.rect.y = pos

Player.py

删除了 init 功能

import pygame
from settings import *


class Player(pygame.sprite.Sprite):

def draw(self, window):
    window.blit(self.image, (self.rect.x, self.rect.y))

def collide_X(self, sprite):
    if (self.rect.x + self.width >= sprite.rect.x >= self.rect.x and self.rect.y + self.height >= sprite.rect.y + TILE_SIZE >=
        self.rect.y) or (self.rect.x + self.width >= sprite.rect.x + TILE_SIZE >= self.rect.x
        and self.rect.y + self.height >= sprite.rect.y + TILE_SIZE >= self.rect.y) or (self.rect.x + self.width >= sprite.rect.x >= self.rect.x and
        sprite.rect.y + TILE_SIZE >= self.rect.y + self.height >= sprite.rect.y >= self.rect.y):
        print 'True'
        return True
    else:
        return False

def collide_Y(self, sprite):
    if (self.rect.y + self.height + self.velocity_y >= sprite.rect.y >= self.rect.y and self.rect.x + self.width >=
        sprite.rect.x >= self.rect.x) or (self.rect.y + self.height >= sprite.rect.y + TILE_SIZE >= self.rect.y + self.velocity_y
        and self.rect.x + self.width >= sprite.rect.x >= self.rect.x):
        return True
    else:
        return False

Camera.py

import pygame
from settings import *


class Camera:
    def __init__(self, width, height):
        self.camera = pygame.Rect(0, 0, width, height)
        self.width = width
        self.height = height

    def apply(self, target):
        return target.rect.move(self.camera.topleft)

    def update(self, target):
        x = - target.rect.x + int(WIDTH/2)
        y = - target.rect.y + int(HEIGHT/2)
        self.camera = pygame.Rect(x, y, self.width, self.height)

Settings.py

WIDTH = 800
HEIGHT = 600

TILE_SIZE = 32

LEVEL_1 = [
    'TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'TTTTTTTTTB                    V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                             V                       V',
    'B                                                     V',
    'B                                                     V',
    'B                                                     V',
    'B              VTTTTTTTTTTTTTTTTTTTTTTTTB             V',
    'B                             V                       V',
    'B                             V                       V',
    'TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT'
]

LEVEL_1_WIDTH = len(LEVEL_1[0])*TILE_SIZE
LEVEL_1_HEIGHT = len(LEVEL_1)*TILE_SIZE

没有相机的碰撞

这是没有相机的碰撞，因为你可以看到它工作正常。

与相机碰撞

当我添加相机功能时，会发生这种情况

如果你想测试它，请从game_loop中删除＃并使用相机应用来评论绘图。

    # self.all_sprites.draw(self.window)
    for sprite in self.all_sprites:
        self.window.blit(sprite.image, self.camera.apply(sprite))

我在Window 10 x64机器中使用python 2.7。

Answer 1

您根本没有将相机变换应用于player实例：它以绝对游戏坐标绘制，而其他所有内容都以相机坐标绘制。

另一方面，碰撞检查总是在游戏绝对坐标中完成。

在绘制之前，您必须将相机应用到播放器。正如您的代码所示，看起来您只需将播放器添加到all_sprites组，并完全删除Player.draw方法。然后，如果您愿意，请更正Camera.update方法上的某些内容，以便在地图的边界处，播放器并不总是以屏幕为中心。

pygame中的摄像头设置和碰撞问题

1 个答案: