什么是精灵(CCSprite),在官网文档中是这么定义的
Sprites
A cocos2d CCSprite is similar to sprites you find in other game engines. It is a 2D image that can be moved, rotated, scaled, animated, and undergo other transformations. Sprites (implemented using the CCSprite class) can have other sprites as children. When a parent is transformed, all its children are transformed as well. Because sprites are a subclass of CCNode, they can be transformed manually or by using CCActions. SeeActions for more information.
他们说Cocos2d-x的精灵和其他游戏引擎中的精灵一样,是一个2D图像,能被移动,旋转,压缩,活动以及其他的变换。精灵可以拥有别的精灵作为儿子,当父精灵变化时,儿子精灵也会跟随着变换。
怎么创建精灵对象:
在cocos2dx中,精灵是由类CCSprite封装的,创建精灵的方法有:
1) 从文件创建
CCSprite::create()
2)从帧缓存创建
默认属性:
默认锚点为0.5,0.5
默认位置为0,0
默认contentSize为图片像素尺寸
常用属性和操作:
缩放 setScale, setScaleX, setScaleY
旋转 setRotation
透明度 setOpacity
锚点 setAnchorPoint
位置 setPosition
反转 setFlipX,setFlipY
隐藏/显示 setVisible
颜色 setColor
zOrder 创建时指定,不可更改,只能通过父对象更改
设置纹理区域 setTextureRect
换图片
setTexture 直接通过图片换
setDisplayFrame 通过缓存帧来更换