Question

尝试运行我的代码时遇到2个错误，但可能还有更多错误，因为这是我第一次使用spritesheets。第一个错误是，在调用Spritesheet时，它给了我一个错误，说我只需要3个参数时就给出了4个参数。我似乎只看到3个参数。第二个错误是此代码行(-1*halfSpriteWidth,-1*spriteHeight),(-1*spriteWidth,-1*spriteHeight)])无法调用'tuple'对象。有人可以帮我解决这个问题。

class spritesheet:
    def __init__(filename,columns,rows):
        sheet = image.load(filename)
        totalCellCount = columns * rows
        rect = sheet.get_rect()
        spriteWidth = cellWidth = rect.width / columns
        spriteHeight = cellHeight = rect.height / rows
        halfSpriteWidth, halfSpriteHeight = cellCenter = (spriteWidth/2,spriteHeight/2)
        cells = list([(index % columns * spriteWidth, index / columns * spriteHeight,spriteWidth,spriteHeight)for index in range(totalCellCount)])
        handle = list([
            (0,0), (-1*halfSpriteWidth,0),(-1*spriteWidth,0),
            (0,-1*halfSpriteHeight),(-1*halfSpriteWidth,-1*halfSpriteHeight),
            (-1*spriteWidth,-1*halfSpriteHeight),(0,-1*spriteHeight)
            (-1*halfSpriteWidth,-1*spriteHeight),(-1*spriteWidth,-1*spriteHeight)])
        def draw(surface,cellIndex, x,y,handle = 0):
            surface.blit(self.sheet(x + handle[handle][0], y + handle[handle][1]),cells[cellIndex])

player = spritesheet('player.png',4,4)
centerHandle = 4
index = 0

Answer 1

您完全忘记了self参数。您的__init__方法应为：

def __init__(self,filename,columns,rows):

还有：

def draw(self,surface,cellIndex, x,y,handle = 0):

并且不要忘记，实例应记住的属性也需要在self之前。
您可能想要：

def __init__(filename,columns,rows):
    self.sheet = image.load(filename)
    self.totalCellCount = columns * rows
    self.rect = self.sheet.get_rect()
    #...
    self.handle = list([
        (0,0), (-1*halfSpriteWidth,0),(-1*spriteWidth,0),
        (0,-1*halfSpriteHeight),(-1*halfSpriteWidth,-1*halfSpriteHeight),
        (-1*spriteWidth,-1*halfSpriteHeight),(0,-1*spriteHeight)
        (-1*halfSpriteWidth,-1*spriteHeight),(-1*spriteWidth,-1*spriteHeight)])

，当您引用列表时，在draw中也self.handle中。顺便说一下，也不需要list调用，方括号就足够了。

元组错误是由于self.handle列表中两个元组之间缺少逗号引起的：

(0,-1*spriteHeight)(-1*halfSpriteWidth,-1*spriteHeight),
                  ^^^ insert comma here

在python中使用Spritesheet时，我不断收到错误消息

1 个答案: