Pygame - AttributeError：'int'对象没有属性'y'

Question

您好我正在使用pygame进行游戏，现在我正在尝试添加地面，重力和跳跃。当我运行代码时，我得到一个属性错误。如果您有解决方案，请提供帮助，以下是代码：

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

pygame.init()

# A few variables
zx = 320
zy = 320
x = 25
y = 320
velX = 0
velY = 0
gravity = .50
ground = 720
clock = pygame.time.Clock()

# Screen
size = 1280, 720
screen = pygame.display.set_mode(size)
pygame.display.set_caption('Moon Survival!')

# Moon
moon = pygame.image.load('images/arena2.jpg')
pygame.display.update()

# Player
class Player(pygame.sprite.Sprite):
    global gravity

    def __init__(self, x, y):

        # Player dimensions and position
        self.x = x
        self.y = y
        self.width = 80
        self.height = 80

        # Player image and animation
        self.i0 = pygame.image.load('images/soldier.png')
        self.i1 = pygame.image.load('images/soldier2.png')
        self.timeTarget = 10
        self.timeNum = 0
        self.currentImage = 0

        # Jump and gravity
        self.vSpeed = 1
        self.jumpForce = 8
        self.maxVspeed = 3
        self.isJumping = False

    # Jump inputs
    def getInput(self):
        keys = pygame.key.get_pressed()
        if keys[pygame.K_SPACE]:
            if not self.isJumping:
                self.isJumping = True

    # PLayer updates
    def update(self):

        # Jumping
        self.getInput()
        self.vSpeed += gravity
        if self.vSpeed >  self.maxVspeed:
            self.vSpeed = self.maxVspeed
        self.y += self.vSpeed
        if self.y >= ground.y:
            self.vSpeed = 0
            self.y = ground.y
            self.isJumping = False
        if self.isJumping:
            self.vSpeed += -self.jumpForce

        # Animations
        #self.timeNum += 1
        if (self.timeNum == self.timeTarget):
            if (self.currentImage == 0):
                self.currentImage = 0
            else:
                self.currentImage = 0
            self.timeNum = 0
        self.render()

    # Player rendering
    def render(self):

        if (self.currentImage == 0):
            screen.blit(self.i0, (self.x, self.y))
        #else:
            #screen.blit(self.i1, (self.x, self.y))


# Zombies
zombie = pygame.image.load('images/zombie.png')
pygame.display.update()

# Sprite variables
player = Player(25, 320)

# Game loop
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    # Movement
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_a:
                velX = -5
            if event.key == pygame.K_d:
                velX = +5
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_a:
                velX = 0
            if event.key == pygame.K_d:
                velX = 0 

    # Image blitting
    screen.blit(moon, (0,0))
    screen.blit(zombie, (zx, zy))

    # Movement variables
    player.x += velX
    player.y += velY

    player.update()

    # Screen wrap
    if player.x >= 1240:
        player.x = 1
    if player.x <= 0:
        player.x = 1240

    # Display updating
    clock.tick(75)
    pygame.display.update()

非常感谢任何帮助，谢谢。

Answer 1

在某些地方，您尝试将int值用作object：

ground = 720

self.y = ground.y # error !!!

ground是数字int（整数）不是.y的对象

您可以使用pygame.Rect()

ground = pygame.Rect(0, 750, 0, 0) # (x, y, width, heigh)

然后您可以使用ground.x，ground.y和其他人 - 请参阅pygame.Rect()。

---

btw：你应该将#Movement代码，# Movement variables代码，# Screen wrap代码作为函数移动到Player类中，并在主循环中调用该函数 - 以使主循环更多可读的。

# Movement variables代码，# Screen wrap代码可能位于player.update

# Movement代码可以在Player类中event_handler(self, event)

def event_handler(self, event):

    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_a:
            velX = -5
        elif event.key == pygame.K_d:
            velX = +5
    elif event.type == pygame.KEYUP:
        if event.key in (pygame.K_a, pygame.K_d):
            velX = 0 

（您可以使用上述elif）

现在您可以在主循环player.event_handler(event)

中使用它

---

修改

我在你的代码中做了很多修改 - 但我没有时间完成它。

玩家仍然没有跳跃。但你有10个移动的僵尸，暂停（按P）和所有类。

import pygame
import random

# Player
class Player(pygame.sprite.Sprite):

    def __init__(self, x, y, gravity):

        # Player dimensions and position

        self.gravity = gravity

        # Player image and animation
        self.images = []
        self.images.append(pygame.image.load('images/soldier.png'))
        self.images.append(pygame.image.load('images/soldier2.png'))
        #~ self.images.append(pygame.image.load('ball1.png'))
        #~ self.images.append(pygame.image.load('ball2.png'))
        self.maxImage = len(self.images)
        self.currentImage = 0

        #~ self.rect = pygame.Rect(x, y, 80, 80)
        self.rect = self.images[0].get_rect()
        self.rect.x = x
        self.rect.y = y

        self.timeTarget = 10
        self.timeNum = 0

        self.velX = 0
        self.velY = 0

        # Jump and gravity
        self.vSpeed = 1
        self.jumpForce = 8
        self.maxVspeed = 3
        self.isJumping = False

    # Jump inputs
    def handle_events(self, event):

        if event.type == pygame.KEYDOWN:

            if event.key == pygame.K_SPACE:
                if not self.isJumping:
                    self.isJumping = True

            elif event.key == pygame.K_a:
                self.velX = -5

            elif event.key == pygame.K_d:
                self.velX = +5

        elif event.type == pygame.KEYUP:
            if event.key in (pygame.K_a, pygame.K_d):
                self.velX = 0 

        print "isJumping:", self.isJumping

    # PLayer updates
    def update(self, ground):

        # Jumping

        self.vSpeed -= self.gravity

        if self.vSpeed > self.maxVspeed:
            self.vSpeed = self.maxVspeed

        self.rect.y -= self.vSpeed

        if self.isJumping:
            self.vSpeed -= self.jumpForce

        if self.rect.bottom >= ground.y:
            self.vSpeed = 0
            self.rect.bottom = ground.y
            self.isJumping = False


        # Animations

        if self.timeNum == self.timeTarget:
            self.currentImage += 1
            if self.currentImage >= self.maxImage:
                self.currentImage = 0
            self.timeNum = 0

        self.rect.centerx += self.velX
        self.rect.centery += self.velY

        # Screen wrap
        if self.rect.right > 1280:
            self.rect.left = 0

        elif self.rect.left < 0:
            self.rect.right = 1280

    # Player rendering
    def render(self, surface):
        surface.blit(self.images[self.currentImage], self.rect)

#----------------------------------------------------------------------

class Zombie():

    def __init__(self, x, y):

        self.image = pygame.image.load('images/zombie.png')
        #~ self.image = pygame.image.load('ball2.png')
        self.rect = self.image.get_rect()

        self.rect.x = x
        self.rect.y = y

        self.direction_left = True

    def update(self, surface_rect):
        if self.direction_left:
            self.rect.x -= 1
            if self.rect.left <= surface_rect.left:
                self.direction_left = not self.direction_left
        else:
            self.rect.x += 1
            if self.rect.right >= surface_rect.right:
                self.direction_left = not self.direction_left

    def render(self, surface):
        surface.blit(self.image, self.rect)

#----------------------------------------------------------------------

class Background():

    def __init__(self):

        self.image = pygame.image.load('images/arena2.jpg')
        #~ self.image = pygame.image.load('background.jpg')
        self.rect = self.image.get_rect()

    def render(self, surface):
        surface.blit(self.image, self.rect)

#----------------------------------------------------------------------

class Game():

    def __init__(self):
        pygame.init()

        # A few variables
        self.gravity = .50
        self.ground = pygame.Rect(0, 720, 0, 0)

        # Screen
        size = (1280, 720)
        self.screen = pygame.display.set_mode(size)
        pygame.display.set_caption('Moon Survival!')

        # Moon / Background
        self.moon = Background()

        # Zombies
        self.zombies = []
        for i in range(10):
            self.zombies.append( Zombie(random.randint(0,1280), random.randint(0,720)) )

        # Player
        self.player = Player(25, 320, self.gravity)

        # Font for text
        self.font = pygame.font.SysFont(None, 72)

        # Pause - center on screen
        self.pause_text = self.font.render("PAUSE", -1, (255,0,0))
        self.pause_rect = self.pause_text.get_rect(center = self.screen.get_rect().center)

    def run(self):

        clock = pygame.time.Clock()

        # "state machine" 
        RUNNING   = True
        PAUSED    = False 
        GAME_OVER = False

        # Game loop
        while RUNNING:

            # (all) Events

            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

                    elif event.key == pygame.K_p:
                        PAUSED = not PAUSED

                # Player/Zomies events  

                if not PAUSED and not GAME_OVER:
                    self.player.handle_events(event)

            # (all) Movements / Updates

            if not PAUSED and not GAME_OVER:
                self.player.update(self.ground)
                for z in self.zombies:
                    z.update(self.screen.get_rect())

            # (all) Display updating

            self.moon.render(self.screen)

            for z in self.zombies:
                z.render(self.screen)

            self.player.render(self.screen)

            if PAUSED:
                self.screen.blit(self.pause_text, self.pause_rect)

            pygame.display.update()

            # FTP

            clock.tick(75)

        # --- the end ---
        pygame.quit()

#---------------------------------------------------------------------

Game().run()