Pygame精灵触摸

Question

我正尝试着创造一款带有两个精灵的简单游戏。我不知道如何添加代码来检测一个精灵是否接触到另一个精灵。我也很难理解关于这个主题的无数教程。如果你能尽量简单地解释给我听，那就太棒了!

import pygame
import sys
from pygame.locals import *
pygame.init()
black = (0, 0, 0)
white = (255, 255, 255)
bg = black
square = pygame.image.load('square.png')
square1 = pygame.image.load('square1.png')
screen = pygame.display.set_mode((640, 400))
UP = 'UP'
DOWN = 'DOWN'
LEFT = 'LEFT'
RIGHT = 'RIGHT'
direction = RIGHT
movex, movey, movex1, movey1 = 100, 100, 200, 200
class player1(pygame.sprite.Sprite):
    """Player 1"""
    def __init__(self, xy):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('square.png')
        self.rect = self.image.get_rect()
class player2(pygame.sprite.Sprite):
    """Player 2"""
    def __init__(self, xy):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('square1.png')
        self.rect = self.image.get_rect()
while True:
    screen.fill(black)
    collide = pygame.sprite.collide_mask(player1, player2)
    if collide == True:
        print 'collision!'
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == K_w:
                movey -= 10 
            elif event.key == K_s:
                movey += 10
            elif event.key == K_a:
                movex -= 10
            elif event.key == K_d:
                movex += 10
            if event.key == K_UP:
                movey1 -= 10 
            elif event.key == K_DOWN:
                movey1 += 10
            elif event.key == K_LEFT:
                movex1 -= 10
            elif event.key == K_RIGHT:
                movex1 += 10
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
    screen.blit(square, (movex, movey))
    screen.blit(square1, (movex1, movey1))
    pygame.display.update()

Answer 1

先说几个问题:

• pygame.sprite.collide_mask从不返回True。它返回一个点或None。因此，您的检查collide == True将永远不会被评估为True
• pygame.sprite.collide_mask除了两个Sprite实例，但是你用class对象作为参数调用它(collide_mask(player1, player2))
• 你只需要pygame.sprite.collide_mask当你想做像素完美的碰撞检测
• 你实际上不使用类player1和player2在你的代码的其余部分

如果你正在使用Sprite类，一个简单的碰撞检测方法是使用Group类。但由于你只有两个精灵，你可以简单地用colliderect检查它们的Rects的交集。

我已经更新了你的代码，使Sprite类的使用:

import pygame
import sys
from pygame.locals import *
pygame.init()
black = (0, 0, 0)
white = (255, 255, 255)
screen = pygame.display.set_mode((640, 400))
class Player(pygame.sprite.Sprite):
    def __init__(self, image, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image)
        self.rect = self.image.get_rect(x=x, y=y)
player1, player2 = Player('square.png', 100, 100), Player('square1.png', 200, 200)
players = pygame.sprite.Group(player1, player2)
while True:
    screen.fill(black)
    if player1.rect.colliderect(player2.rect):
        print 'collision!'
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == K_w:
                player1.rect.move_ip(0, -10) 
            elif event.key == K_s:
                player1.rect.move_ip(0, 10)
            elif event.key == K_a:
                player1.rect.move_ip(-10, 0)
            elif event.key == K_d:
                player1.rect.move_ip(10, 0)
            if event.key == K_UP:
                player2.rect.move_ip(0, -10)
            elif event.key == K_DOWN:
                player2.rect.move_ip(0, 10)
            elif event.key == K_LEFT:
                player2.rect.move_ip(-10, 0)
            elif event.key == K_RIGHT:
                player2.rect.move_ip(10, 0)
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
    players.draw(screen)
    pygame.display.update()

碰撞检测是一个广泛的主题，但这应该让你开始。