Pygame, self 未定义 [英] Pygame, self is not defined

问题描述

所以我在编译时遇到这个错误，我不明白，因为我有 2 个相同的类，一个工作正常，另一个抛出这个错误.

So I'm getting this error when I compile, I don't understand though because I've got 2 identical classes, one works fine the other throws out this error.

如果 self.currentState2==1:NameError: 名称self"未定义

class EnemyShip(pygame.sprite.Sprite):
    def __init__(self, (x, y), playerShip):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load("enemy.png")
        self.image = self.image.convert()
        tranColor = self.image.get_at((1, 1))
        self.image.set_colorkey(tranColor)
        self.rect = self.image.get_rect()
        self.enemyX = float(x)
        self.enemyY = float(y)
        self.ship = playerShip
        self.count = 0
        self.currentState2 = 0

    def update(self):
        self.count += 1
        x_component = self.ship.rect.centerx-self.enemyX
        y_component = self.ship.rect.centery-self.enemyY
        distance = math.hypot(x_component, y_component)
        if distance < 100:
            self.currentState2 = 1
            print distance
        elif distance > 100:
            self.currentState2 = 0
            print "test2"


        if self.count < 600:
            self.caculateNextPosition()
            self.rect.center = (self.enemyX, self.enemyY)
        elif self.count < 600:
            self.caculateNextPositionEvade()
            self.rect.center = (self.enemyX, self.enemyY)
        else:
            self.count = 0    

    def caculateNextPosition(self):
        shipX = self.ship.rect.centerx
        shipY = self.ship.rect.centery
    if self.currentState2==1:
        if self.enemyY < shipY:
            self.enemyY += 4
        elif self.enemyY > shipY:
            self.enemyY -= 4

        if self.enemyX < shipX:
            self.enemyX += 4
        elif self.enemyX > shipX:
            self.enemyX -= 4
    elif self.currentState2==0: 
        if self.enemyY < shipY:
            self.enemyY += 0
        elif self.enemyY > shipY:
            self.enemyY -= 0

        if self.enemyX < shipX:
            self.enemyX += 0
        elif self.enemyX > shipX:
        self.enemyX -= 0

推荐答案

这些行需要缩进:

if self.currentState2==1:

elif self.currentState2==0: 

它们不被视为函数 def 的一部分，因为它们与函数名称具有相同的缩进.

They are not considered part of the function def since they have the same indentation as the function name.

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