Question

我的代码有问题。所以，我想在Pygame创造一个游戏，香蕉从天而降，猴子必须抓住它们。我很难在这两者之间造成碰撞（花了几个小时尝试）。

所以，这是我的代码：

import pygame, sys, random, time, os
from pygame.locals import * 

#Variáveis necessárias
banana_speed = 5
monkey_speed = 20
WIDTH = 800
HEIGHT = 800
pontos = 0
vidas = 3

#Nome do jogo
pygame.display.set_caption("Catch the fruit")

#Tamanho do ecrã do jogo
screen = pygame.display.set_mode((WIDTH, HEIGHT))

class Macaco(pygame.sprite.Sprite):
    def __init__(self):
        self.image = pygame.image.load('monkey.png')
        self.rect = self.image
        self.x = 300
        self.y = 640 
    def keyboard(self):
        key = pygame.key.get_pressed()
        if key[pygame.K_RIGHT]:
            self.x += monkey_speed
        elif key[pygame.K_LEFT]:
            self.x -= monkey_speed
    def draw (self, screen):
        screen.blit(self.rect, (self.x, self.y))

class Background(pygame.sprite.Sprite):
    def __init__(self, image_file, location):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location

class Banana(pygame.sprite.Sprite):
    def __init__(self):
        self.image = pygame.image.load('banana.png')
        self.rect = self.image
        self.x = random.randrange(0,WIDTH)
        self.y = -50
    def draw(self, screen):
        self.y = self.y + banana_speed
        screen.blit(self.rect,(self.x, self.y))

#Funções necessárias para o Loop
macaco = Macaco()
banana = Banana()
Background = Background('background.png', [0,0])

os.environ["SDL_VIDEO_CENTERED"] = "1"
pygame.init()

while vidas > 0:
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == K_ESCAPE:
                running = False
        elif event.type == QUIT:
            running = False

    screen.blit(Background.image, Background.rect)
    pressed_keys = pygame.key.get_pressed()
    macaco.keyboard()
    macaco.draw(screen)
    banana.draw(screen)
    pygame.display.update()

编辑：所以我尝试了另一种解决方案并做到了这一点：

import pygame, sys, random, time, os
from pygame.locals import * 

#Variáveis necessárias
banana_speed = 5
monkey_speed = 20
WIDTH = 800
HEIGHT = 800
pontos = 0
vidas = 3
green = (0, 0 , 255)

#Nome do jogo
pygame.display.set_caption("Catch the fruit")

#Tamanho do ecrã do jogo
screen = pygame.display.set_mode((WIDTH, HEIGHT))

class Macaco(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.rect = pygame.image.load('monkey.png')
        self.image = pygame.Surface([WIDTH, HEIGHT])
        self.x = 300
        self.y = 640
        self.image.fill(green)
    def keyboard(self):
        key = pygame.key.get_pressed()
        if key[pygame.K_RIGHT]:
            self.x += monkey_speed
        elif key[pygame.K_LEFT]:
            self.x -= monkey_speed
    def draw (self, screen):
        screen.blit(self.rect, (self.x, self.y))

class Background(pygame.sprite.Sprite):
    def __init__(self, image_file, location):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location

class Banana(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.rect = pygame.image.load('banana.png')
        self.image = pygame.Surface([WIDTH, HEIGHT])
        self.x = random.randrange(0, WIDTH)
        self.y = -50
    def draw(self, screen):
        self.y = self.y + banana_speed
        screen.blit(self.rect,(self.x, self.y))


#Funções necessárias para o Loop
macaco = Macaco()
banana = Banana()
Background = Background('background.png', [0,0])

os.environ["SDL_VIDEO_CENTERED"] = "1"
pygame.init()

while vidas > 0:
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == K_ESCAPE:
                running = False
        elif event.type == QUIT:
            running = False
    screen.blit(Background.image, Background.rect)
    pressed_keys = pygame.key.get_pressed()
    macaco.keyboard()
    macaco.draw(screen)
    banana.draw(screen)
    blocks_hit_list = pygame.sprite.spritecollide(macaco, banana, True)
    for blocks in blocks_hit_list:
        pontos +=1
    pygame.display.update()

请你给我一些帮助吗？

Answer 1

我创建了两个精灵组：all_sprites，其中包含所有精灵，用于仅用两行代码更新和绘制它们，以及用于检查的bananas组对于macaco和香蕉之间的碰撞。然后我们需要pygame.sprite.spritecollide函数来获取碰撞的精灵。你必须传递一个精灵实例和一个精灵组，如果精灵与组中的精灵发生碰撞，它就会检查你。它将碰撞的香蕉作为列表返回，您可以通过该列表迭代以对其执行某些操作，或者例如增加点计数器。

你必须在sprite中调用父类的__init__方法才能正确使用sprite组（使用super函数super().__init__()（在Python中） 2 super(Macaco, self).__init__()）。

要更新精灵的位置，请将topleft（或center）属性设置为新的x，y坐标。

从图像调用self.rect = self.image.get_rect()获取矩形。

import sys
import random
import pygame


pygame.init()
screen = pygame.display.set_mode((800, 800))


class Macaco(pygame.sprite.Sprite):

    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((30, 30))
        self.image.fill((190, 140, 20))
        self.rect = self.image.get_rect()
        self.x = 300
        self.y = 640
        self.speed = 20

    def keyboard(self, keys):
        if keys[pygame.K_RIGHT]:
            self.x += self.speed
        elif keys[pygame.K_LEFT]:
            self.x -= self.speed

    def update(self):
        self.rect.topleft = self.x, self.y


class Banana(pygame.sprite.Sprite):

    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((30, 30))
        self.image.fill((230, 230, 40))
        self.rect = self.image.get_rect()
        self.x = random.randrange(0, 770)
        self.y = -50
        self.speed = 5

    def update(self):
        self.y += self.speed
        self.rect.topleft = self.x, self.y


macaco = Macaco()
banana = Banana()

all_sprites = pygame.sprite.Group(macaco, banana)
bananas = pygame.sprite.Group(banana)

clock = pygame.time.Clock()
running = True

while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                running = False

    keys = pygame.key.get_pressed()
    macaco.keyboard(keys)
    all_sprites.update()
    # Collision detection. Check if macaco collided with bananas group,
    # return collided bananas as a list. dokill argument is True, so
    # that collided bananas will be deleted.
    collided_bananas = pygame.sprite.spritecollide(macaco, bananas, True)
    for collided_banana in collided_bananas:
        print('Collision.')

    screen.fill((70, 40, 70))
    all_sprites.draw(screen)

    pygame.display.update()
    clock.tick(30)

pygame.quit()
sys.exit()

在pygame中创建碰撞

1 个答案: