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在Irrlicht中的人物添加武器 其实相当简单：找到关节然后attach上去就ok了。

 scene::IAnimatedMesh* pManMesh = smgr->getMesh("../../media/noblade.ms3d");
 scene::IAnimatedMeshSceneNode* pnMan = smgr->addAnimatedMeshSceneNode( pManMesh );
 pnMan->setMaterialTexture(0, driver->getTexture("../../media/skin.jpg"));
 pnMan->setMaterialFlag(video::EMF_LIGHTING, false);
 pnMan->setPosition(core::vector3df(50,50,-60));
 pnMan->setScale(core::vector3df(5,5,5));
 pnMan->setAnimationSpeed(25*10);
 // this is a scene node where we can attach things to joints
 scene::ISceneNode* pJointNode = pnMan->getMS3DJointNode("leftWeaponJoint");
 if(pJointNode)
 {
  scene::IAnimatedMesh* pWeapon = smgr->getMesh("../../media/blade.ms3d");
  scene::IAnimatedMeshSceneNode* pnWeapon = smgr->addAnimatedMeshSceneNode( pWeapon );
  pnWeapon->setScale(core::vector3df(2,2,2));
  core::vector3df jointPos = pJointNode->getAbsolutePosition();
  //pnWeapon->setPosition(jointPos);
  pJointNode->addChild( pnWeapon );
  printf("Join weapon to body, x=%d, y=%d, z=%d\n", jointPos.X, jointPos.Y, jointPos.Z);
 }