/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     gfx_SceneNode.cpp

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  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.

  $Revision: 24950 $
 *---------------------------------------------------------------------------*/

#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;
    }
    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