Hey, I am trying to make some custom Cocos2DX examples to get to know the engine better.

As far as I can see, the "automatic" method:

spine::SkeletonAnimation::createWithJsonFile

doesn't seem to be efficient in case you want to create lots of copies of an animated object. The correct way is probably this:

create atlas from file
create skeleton data from atlas + (json) file
create as many instances as you like from skeleton data

Well, that crashes when I try to

addChild

the created instance in my scene. Here is my crashing code:

   if (true)
   {
// this works
      skeletonInstance = spine::SkeletonAnimation::createWithJsonFile(PATH + "goblins.json", PATH + "goblins.atlas", 1.f);
      addChild(skeletonInstance);
      skeletonInstance->setPosition(400, 300);
      skeletonInstance->setAnimation(0, "walk", true);
      skeletonInstance->setSkin("goblin");
   }
   else
   {
// this crashes at render time
      spAtlas* atlas = spAtlas_createFromFile((PATH + "goblins.atlas").c_str(), 0);
      spSkeletonJson* json = spSkeletonJson_create(atlas);
      json->scale = 1.f;
      spSkeletonData* skeletonData = spSkeletonJson_readSkeletonDataFile(json, (PATH + "goblins.json").c_str());
      if (!skeletonData) {
         CCLOG("OOPSA: %s\n", json->error);
         //exit(0);
      }
      skeletonInstance = spine::SkeletonAnimation::createWithData(skeletonData, true);
      addChild(skeletonInstance);
      spSkeletonJson_dispose(json);
   }

crash info:

Exception thrown: read access violation.
attachmentVertices->_triangles was 0x2D.

in file

SkeletonRenderer.cpp, line 226

I've checked how

spine::SkeletonAnimation::createWithJsonFile

works, and it seems it has these lines different:

_attachmentLoader = SUPER(Cocos2dAttachmentLoader_create(_atlas));
spSkeletonJson* json = spSkeletonJson_createWithLoader(_attachmentLoader);

The spine docs IIRC don't mention that the attachmentLoader is essential, but maybe it is? Or is it a library (spine-cpp) bug? Or what? 🙂