Cocos2dx中通过plist文件加载动画答案

【问题标题】：Loading animations through plist files in Cocos2dxCocos2dx中通过plist文件加载动画
【发布时间】：2012-08-25 01:35:51
【问题描述】：

这些天我正在学习使用cocos2dx。从现在开始，我已经能够加载和播放保存为.plist 文件的精灵动画。我是这样加载动画的：

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("oras.plist");
CCAnimation *bearWalkingAnimation = CCAnimation::create();

for (int i = 0 ; i < 8 ; ++i )
{

    std::stringstream ss;
    ss << "bear" << i + 1  << ".png";

    std::string name = ss.str();
    CCSpriteFrame* sprite =  CCSpriteFrameCache::sharedSpriteFrameCache()>spriteFrameByName(name.c_str());
    bearWalkingAnimation->addSpriteFrame(sprite);

}

我依赖于我知道图像名称这一事实，但现在我正在尝试组织一点我的代码。

我想知道在加载时是否知道在哪个 plist 文件中关联精灵帧。我可以这样做吗？怎么做？

换句话说，我想编写一个能够加载动画的通用类，只知道plist 文件名。比如：

void MyLoaderClass::LoadAnimation(std::string plist_file_name){ ....}

【问题讨论】：

标签： c++ animation sprite cocos2d-x

【解决方案1】：

我已经解决了从加载的plist 文件构建CCDictionary 的问题：

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile(fileName.c_str());

mAnimation = CCAnimation::create();

CCFileUtils *fileUtils = CCFileUtils::sharedFileUtils();
const char *fullPath = fileUtils->fullPathFromRelativePath(fileName.c_str());


CCDictionary *dictionary = CCDictionary::createWithContentsOfFileThreadSafe(fullPath);
CCDictionary *framesDict = static_cast<CCDictionary*> (dictionary->objectForKey("frames"));

CCArray *keys = framesDict->allKeys();

for (int i = 0 ; i < keys->count(); ++i)
{
    CCString *spriteFileName = static_cast<CCString *> (keys->objectAtIndex(i));
    CCSpriteFrame* sprite =  CCSpriteFrameCache::sharedSpriteFrameCache()->spriteFrameByName(spriteFileName->getCString());
    mAnimation->addSpriteFrame(sprite);

}

【讨论】：

【解决方案2】：

//“horse.png”通过哪个batch node crate

CCSpriteBatchNode* spritebatch = CCSpriteBatchNode::create("horse.png");
CCSpriteFrameCache* cache = CCSpriteFrameCache::sharedSpriteFrameCache();
cache->addSpriteFramesWithFile("horse.plist");

// "hero" is CCSprite and "horse_1.png" is a sprite in "horse.png" batch node

hero = CCSprite::createWithSpriteFrameName("horse_1.png");

addChild(spritebatch);
spritebatch->addChild(hero);

CCLog("In the anim2");

CCArray* animFrames = CCArray::createWithCapacity(16);
char str[100] = {0};
for(int i = 1; i < 16; i++)
{
    // in my batch node all the sprite name as 'horse_1.png', 'horse_2.png'.....
    sprintf(str, "horse_%i.png", i);
    CCSpriteFrame* frame = cache->spriteFrameByName( str );
    animFrames->addObject(frame);
}
CCAnimation* animation = CCAnimation::createWithSpriteFrames(animFrames, .1f);
animation->setRestoreOriginalFrame(true);
hero->runAction( CCRepeatForever::create( CCAnimate::create(animation) ) );

【讨论】：