/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     gfx_SceneNode.cpp
  
  Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc.  All rights reserved.
  
  These coded instructions, statements, and computer programs contain proprietary
  information of Nintendo and/or its licensed developers and are protected by
  national and international copyright laws. They may not be disclosed to third
  parties or copied or duplicated in any form, in whole or in part, without the
  prior written consent of Nintendo.
  
  The content herein is highly confidential and should be handled accordingly.
  
  $Revision: 31311 $
 *---------------------------------------------------------------------------*/

#include "precompiled.h"

#include <nw/gfx/gfx_SceneNode.h>
#include <nw/gfx/gfx_ISceneVisitor.h>

#include <nw/ut/ut_ResUtil.h>
#include <nw/ut/ut_ResDictionary.h>
#include <nw/ut/ut_Foreach.h>

namespace nw
{
namespace gfx
{

NW_UT_RUNTIME_TYPEINFO_DEFINITION(SceneNode, SceneObject);

//----------------------------------------
SceneNode*
SceneNode::DynamicBuilder::Create(
    os::IAllocator* allocator
)
{
    NW_NULL_ASSERT(allocator);

    void* memory = allocator->Alloc(sizeof(SceneNode));
    NW_NULL_ASSERT(memory);

    SceneNode* node = new(memory) SceneNode(
        allocator, ResSceneNode(), m_Description);
    
    Result result = node->Initialize(allocator);

    NW_ASSERT(result.IsSuccess());

    return node;
    
}

//----------------------------------------
SceneNode*
SceneNode::Create(
    SceneNode* parent,
    ResSceneObject resource,
    const SceneNode::Description& description,
    os::IAllocator* allocator
)
{
    NW_NULL_ASSERT(allocator);
    
    ResSceneNode resNode = ResStaticCast<ResSceneNode>(resource);
    
    void* memory = allocator->Alloc(sizeof(SceneNode));
    NW_NULL_ASSERT(memory);

    SceneNode* node = new(memory) SceneNode(
        allocator, resNode, description);
    
    Result result = node->Initialize(allocator);

    NW_ASSERT(result.IsSuccess());
    
    if (parent)
    {
        bool isAttached = parent->AttachChild(node);
        NW_ASSERT(isAttached);
    }
    return node;
}

//----------------------------------------
void
SceneNode::Accept(
    ISceneVisitor* visitor
)
{    
    visitor->VisitSceneNode(this);
    AcceptChildren(visitor);
}

//----------------------------------------
Result
SceneNode::CreateAnimBinding(os::IAllocator* allocator)
{
    Result result = INITIALIZE_RESULT_OK;

    if (!m_Description.isAnimationEnabled)
    {
        return result;
    }

    ResSceneObject resSceneObject = GetResSceneObject();
    ResSceneNode resSceneNode = *reinterpret_cast<ResSceneNode*>(&resSceneObject);
    if(!resSceneNode.IsValid())
    {
        return result;
    }
    
    const int animGroupCount = resSceneNode.GetAnimGroupsCount();
    if (animGroupCount == 0)
    {
        return result;
    }

    bool hasAnimGroupMember = false;
    for (int idx = 0; idx < animGroupCount; ++idx)
    {
        if (0 < resSceneNode.GetAnimGroups(idx).GetMemberInfoSetCount())
        {
            hasAnimGroupMember = true;
            break;
        }
    }
    if (!hasAnimGroupMember)
    {
        return result;
    }

    AnimBinding* animBinding = AnimBinding::Builder()
        .MaxAnimGroups(animGroupCount)
        .MaxAnimObjectsPerGroup(m_Description.maxAnimObjectsPerGroup) 
        .Create(allocator);

    if (animBinding == NULL)
    {
        result |= Result::MASK_FAIL_BIT;
    }

    NW_ENSURE_AND_RETURN(result);

    SetAnimBinding(animBinding);

    return result;
}

//----------------------------------------
Result
SceneNode::CreateChildren(os::IAllocator* allocator)
{
    Result result = INITIALIZE_RESULT_OK;

    if (m_Description.isFixedSizeMemory)
    {
        if (m_Description.maxChildren == 0)
        {
            m_Children = SceneNodeChildren(NULL, NULL, 0, NULL);
        }
        else
        {
            void* memory = allocator->Alloc(
                sizeof(SceneNode*) * m_Description.maxChildren, CHILDREN_MEMORY_ALIGNMENT);

            if (memory == NULL)
            {
                result |= Result::MASK_FAIL_BIT;
            }
            NW_ENSURE_AND_RETURN(result);

            m_Children = SceneNodeChildren(NULL, memory, m_Description.maxChildren, allocator);
        }
    }
    else
    {
        m_Children = SceneNodeChildren(NULL, allocator);
    }

    return result;
}

//----------------------------------------
Result
SceneNode::CreateCallbacks(os::IAllocator* allocator)
{
    Result result = INITIALIZE_RESULT_OK;

    if (m_Description.isFixedSizeMemory)
    {
        if (m_Description.maxCallbacks == 0)
        {
            this->m_PreUpdateSignal =
                UpdateSignal::CreateInvalidateSignal(allocator);
        }
        else
        {
            this->m_PreUpdateSignal =
                UpdateSignal::CreateFixedSizedSignal(m_Description.maxCallbacks, allocator);
        }
    }
    else
    {
        this->m_PreUpdateSignal =
            UpdateSignal::CreateVariableSizeSignal(allocator);
    }

    // 動的配列のメモリ確保に失敗した場合
    if (m_PreUpdateSignal == NULL)
    {
        result |= Result::MASK_FAIL_BIT;
    }

    return result;
}

//----------------------------------------
Result
SceneNode::Initialize(os::IAllocator* allocator)
{
    Result result = INITIALIZE_RESULT_OK;

    result |= CreateChildren(allocator);
    NW_ENSURE_AND_RETURN(result);

    this->m_Children.SetParent(this);

    result |= CreateCallbacks(allocator);
    NW_ENSURE_AND_RETURN(result);

    result |= CreateAnimBinding(allocator);
    NW_ENSURE_AND_RETURN(result);

    return result;
}

} // namespace gfx
} // namespace nw