axmol/extensions/cocostudio/CCBatchNode.cpp

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#include "CCBatchNode.h"
#include "CCArmature.h"
#include "CCSkin.h"

#include "renderer/CCRenderer.h"
#include "renderer/CCGroupCommand.h"
#include "base/CCDirector.h"

USING_NS_AX;
namespace cocostudio
{
BatchNode* BatchNode::create()
{
    BatchNode* batchNode = new BatchNode();
    if (batchNode->init())
    {
        batchNode->autorelease();
        return batchNode;
    }
    AX_SAFE_DELETE(batchNode);
    return nullptr;
}
BatchNode::BatchNode() : _groupCommand(nullptr) {}
BatchNode::~BatchNode()
{
    AX_SAFE_DELETE(_groupCommand);
}

bool BatchNode::init()
{
    bool ret = Node::init();
    return ret;
}

void BatchNode::addChild(Node* child, int zOrder, int tag)
{
    Node::addChild(child, zOrder, tag);
    Armature* armature = dynamic_cast<Armature*>(child);
    if (armature != nullptr)
    {
        armature->setBatchNode(this);
        if (_groupCommand == nullptr)
        {
            _groupCommand = new GroupCommand();
        }
    }
}

void BatchNode::addChild(ax::Node* child, int zOrder, std::string_view name)
{
    Node::addChild(child, zOrder, name);
    Armature* armature = dynamic_cast<Armature*>(child);
    if (armature != nullptr)
    {
        armature->setBatchNode(this);
        if (_groupCommand == nullptr)
        {
            _groupCommand = new GroupCommand();
        }
    }
}

void BatchNode::removeChild(Node* child, bool cleanup)
{
    Armature* armature = dynamic_cast<Armature*>(child);
    if (armature != nullptr)
    {
        armature->setBatchNode(nullptr);
    }

    Node::removeChild(child, cleanup);
}

void BatchNode::visit(Renderer* renderer, const Mat4& parentTransform, uint32_t parentFlags)
{
    // quick return if not visible. children won't be drawn.
    if (!_visible)
    {
        return;
    }

    uint32_t flags = processParentFlags(parentTransform, parentFlags);

    if (isVisitableByVisitingCamera())
    {
        // IMPORTANT:
        // To ease the migration to v3.0, we still support the Mat4 stack,
        // but it is deprecated and your code should not rely on it
        Director* director = Director::getInstance();
        director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
        director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

        sortAllChildren();
        draw(renderer, _modelViewTransform, flags);

        // FIX ME: Why need to set _orderOfArrival to 0??
        // Please refer to https://github.com/cocos2d/cocos2d-x/pull/6920
        // setOrderOfArrival(0);

        director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    }
}

void BatchNode::draw(Renderer* renderer, const Mat4& transform, uint32_t flags)
{
    if (_children.empty())
    {
        return;
    }

    //    AX_NODE_DRAW_SETUP();

    bool pushed = false;
    for (auto&& object : _children)
    {
        Armature* armature = dynamic_cast<Armature*>(object);
        if (armature)
        {
            if (!pushed)
            {
                generateGroupCommand();
                pushed = true;
            }

            armature->visit(renderer, transform, flags);
        }
        else
        {
            renderer->popGroup();
            pushed = false;

            ((Node*)object)->visit(renderer, transform, flags);
        }
    }
}

void BatchNode::generateGroupCommand()
{
    Renderer* renderer = Director::getInstance()->getRenderer();
    _groupCommand->init(_globalZOrder);
    renderer->addCommand(_groupCommand);

    renderer->pushGroup(_groupCommand->getRenderQueueID());
}

}  // namespace cocostudio