cocos study notes-Sprite

Reference: [jellythink](“http://www.jellythink.com/archives/742“)

1.Sprite class

Sprite is a 2D picture object,which can be defined by using a picture or part of picture.A Sprite can move, rotate, play action and so on. It consist of Texture,Frame,Animation.

important:

We usually use Texture2D to load the picture, then use it to produce SpriteFrame.After that , we add SpriteFrame to the Animation to produce action data.Finally, Animation produces Animate.Then Sprite puts it into action.

2.Sprite

API:

//create an empty sprite and then use `setTexture` to set the texture static Sprite* create(); //create a sprite with an image static Sprite* create(const std::string& filename); //create a sprite with a Texture2D object static Sprite* createWithTexture(Texture2D* texture); //create a sprite by using spriteframe static Sprite* createWithSpriteFrame(SpriteFrame *spriteFrame); /*create a sprite by using a spriteframe,inside the programe, IDE will get `SpriteFrame` from `SpriteFrameCache` according to `SpriteFrameName` parameter */ static Sprite* createWithSpriteFrameName(const std::string& spriteFrameName)

3.SpriteBatchNode

If we need to render many sprites,we can use SpriteBatchNode to render them in one time to save spending,like this:

auto batchNode = SpriteBatchNode::create("CloseNormal.png", 1000); batchNode->setPosition(Point::ZERO); this->addChild(batchNode); for (int i = 0;i < 1000;i++) { int x = rand() % 960; int y = rand() % 640; auto testIcon = Sprite::createWithTexture(batchNode->getTexture()); testIcon->setPosition(ccp(x, y)); batchNode->addChild(testIcon); }