/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/

#include "HeadSpin.h"

#include "MaxMain/MaxAPI.h"

#include "../resource.h"

#include "plClothingMtl.h"

#include "../Shaders.h"

#include "MaxMain/plPlasmaRefMsgs.h"
#include "../plBMSampler.h"
#include "../Layers/plLayerTex.h"
#include "../Layers/plLayerTexBitmapPB.h"
#include "plAvatar/plClothingLayout.h"

extern HINSTANCE hInstance;

class plClothingMtlClassDesc : public plMaxClassDesc<ClassDesc2>
{
public:
    int             IsPublic() override      { return TRUE; }
    void*           Create(BOOL loading) override { return new plClothingMtl(loading); }
    const TCHAR*    ClassName() override     { return GetString(IDS_CLOTHING_MTL); }
    SClass_ID       SuperClassID() override  { return MATERIAL_CLASS_ID; }
    Class_ID        ClassID() override       { return CLOTHING_MTL_CLASS_ID; }
    const TCHAR*    Category() override      { return nullptr; }
    const TCHAR*    InternalName() override  { return _T("ClothingMaterial"); }
    HINSTANCE       HInstance() override     { return hInstance; }
};
static plClothingMtlClassDesc plClothingMtlDesc;
ClassDesc2* GetClothingMtlDesc() { return &plClothingMtlDesc; }

// For initializing paramblock descriptor
ParamBlockDesc2 *GetClothingPB();
#include "plClothingMtlPBDec.h"

const UINT32 plClothingMtl::ButtonConstants[] =
{
    IDC_CLOTHING_TEXTURE1,
    IDC_CLOTHING_TEXTURE2,
    IDC_CLOTHING_TEXTURE3,
    IDC_CLOTHING_TEXTURE4
};

const UINT32 plClothingMtl::TextConstants[] =
{
    IDC_CLOTHING_TILE1_NAME,
    IDC_CLOTHING_TILE1_SIZE,
    IDC_CLOTHING_TILE2_NAME,
    IDC_CLOTHING_TILE2_SIZE,
    IDC_CLOTHING_TILE3_NAME,
    IDC_CLOTHING_TILE3_SIZE,
    IDC_CLOTHING_TILE4_NAME,
    IDC_CLOTHING_TILE4_SIZE
};

const TCHAR* plClothingMtl::LayerStrings[] =
{
    _T("Base"),
    _T("Skin"),
    _T("Skin Blend (1)"),
    _T("Skin Blend (2)"),
    _T("Skin Blend (3)"),
    _T("Skin Blend (4)"),
    _T("Skin Blend (5)"),
    _T("Skin Blend (6)"),
    _T("Tint 1"),
    _T("Tint 2")
};

const uint8_t plClothingMtl::LayerToPBIdx[] =
{
    kTexmapBase,
    kTexmapSkin,
    kTexmapSkinBlend1,
    kTexmapSkinBlend2,
    kTexmapSkinBlend3,
    kTexmapSkinBlend4,
    kTexmapSkinBlend5,
    kTexmapSkinBlend6,
    kTexmap,
    kTexmap2
};

plClothingMtl::plClothingMtl(BOOL loading) : fBasicPB()
{
    plClothingMtlDesc.MakeAutoParamBlocks(this);

    Reset();
    int i;
    for (i = 0; i < plClothingMtl::kMaxTiles; i++)
    {
        plLayerTex *tex = new plLayerTex;
        fBasicPB->SetValue(ParamID(kTexmap), 0, tex, i);
    }
    fBasicPB->SetValue(ParamID(kThumbnail), 0, new plLayerTex);
}

void plClothingMtl::IGetClassName(MSTR& s) const
{
    s = GetString(IDS_CLOTHING_MTL);
}

void plClothingMtl::Reset() 
{
    fIValid.SetEmpty();
}

ParamDlg* plClothingMtl::CreateParamDlg(HWND hwMtlEdit, IMtlParams *imp) 
{
    fIMtlParams = imp;
    IAutoMParamDlg* masterDlg = plClothingMtlDesc.CreateParamDlgs(hwMtlEdit, imp, this);

    return (ParamDlg*)masterDlg;    
}

BOOL plClothingMtl::SetDlgThing(ParamDlg* dlg)
{
    return FALSE;
}

Interval plClothingMtl::Validity(TimeValue t)
{
    // mf horse - Hacking in something like real validity checking
    // to get material animations working. No warranty, this is just
    // better than nothing.
    Interval v = FOREVER;
    fBasicPB->GetValidity(t, v);

    return v;
}

/*===========================================================================*\
 |  Subanim & References support
\*===========================================================================*/

/*
int plClothingMtl::NumSubs()
{
    return 2;
}

TSTR plClothingMtl::SubAnimName(int i) 
{
    switch (i)
    {
    case 0: return fBasicPB->GetLocalName();
    case 1: return "Texmap";
    }

    return "";
}

Animatable* plClothingMtl::SubAnim(int i)
{
    switch (i)
    {
    case 0: return fBasicPB;
    case 1: return fBasicPB->GetTexmap(kTexmap);
    }

    return nullptr;
}
*/

int plClothingMtl::NumRefs()
{
    return 1;
}

RefTargetHandle plClothingMtl::GetReference(int i)
{
    switch (i)
    {
    case kRefBasic:  return fBasicPB;
    }

    return nullptr;
}

void plClothingMtl::SetReference(int i, RefTargetHandle rtarg)
{
    if (i == kRefBasic)
        fBasicPB = (IParamBlock2 *)rtarg;
}

int plClothingMtl::NumParamBlocks()
{
    return 1;
}

IParamBlock2* plClothingMtl::GetParamBlock(int i)
{
    return (IParamBlock2*)GetReference(i);
}

IParamBlock2* plClothingMtl::GetParamBlockByID(BlockID id)
{
    if (fBasicPB->ID() == id)
        return fBasicPB;

    return nullptr;
}

RefResult plClothingMtl::NotifyRefChanged(MAX_REF_INTERVAL changeInt, RefTargetHandle hTarget,
                                          PartID& partID, RefMessage message MAX_REF_PROPAGATE)
{
    switch (message)
    {
        case REFMSG_CHANGE:
            fIValid.SetEmpty();

            // see if this message came from a changing parameter in the pblock,
            // if so, limit rollout update to the changing item
            if (hTarget == fBasicPB)
            {
                IParamBlock2 *pb = (IParamBlock2*)hTarget;

                ParamID changingParam = pb->LastNotifyParamID();
                pb->GetDesc()->InvalidateUI(changingParam);
                
                // And let the SceneWatcher know that the material on some of it's
                // referenced objects changed.
                if (MAX_REF_PROPAGATE_VALUE)
                    NotifyDependents(FOREVER, PART_ALL, REFMSG_USER_MAT);
            }
            break;
    }

    return REF_SUCCEED;
}

////////////////////////////////////////////////////////////////////////////////
// Subtexmap access

int plClothingMtl::NumSubTexmaps()
{
    return plClothingElement::kLayerMax * kMaxTiles + 1; // add one for the thumbnail
}

Texmap* plClothingMtl::GetSubTexmap(int i)
{
    if (i >= 0 && i < plClothingElement::kLayerMax * kMaxTiles)
        return fBasicPB->GetTexmap(ParamID(LayerToPBIdx[i / kMaxTiles]), 0, i % kMaxTiles);
    if (i == plClothingElement::kLayerMax * kMaxTiles)
        return fBasicPB->GetTexmap(ParamID(kThumbnail));

    return nullptr;
}

void plClothingMtl::SetSubTexmap(int i, Texmap *m)
{
    if (i >= 0 && i < plClothingElement::kLayerMax * kMaxTiles)
        fBasicPB->SetValue(ParamID(LayerToPBIdx[i / kMaxTiles]), 0, m, i % kMaxTiles);
    if (i == plClothingElement::kLayerMax * kMaxTiles)
        fBasicPB->SetValue(kThumbnail, 0, m);
}

MSTR plClothingMtl::IGetSubTexmapSlotName(int i)
{
    if (i >= 0 && i < plClothingElement::kLayerMax * kMaxTiles)
        return _M("Texmap");
    if (i == plClothingElement::kLayerMax * kMaxTiles)
        return _M("Thumbnail");

    return _M("");
}

MSTR plClothingMtl::GetSubTexmapTVName(int i)
{
    return GetSubTexmapSlotName(i);
}

Texmap *plClothingMtl::GetTexmap(int index, int layer)
{ 
    return fBasicPB->GetTexmap(ParamID(LayerToPBIdx[layer]), 0, index); 
}

/*===========================================================================*\
 |  Standard IO
\*===========================================================================*/

#define MTL_HDR_CHUNK 0x4000

IOResult plClothingMtl::Save(ISave *isave)
{ 
    IOResult res;
    isave->BeginChunk(MTL_HDR_CHUNK);
    res = MtlBase::Save(isave);
    if (res!=IO_OK) return res;
    isave->EndChunk();

    return IO_OK;
}   

IOResult plClothingMtl::Load(ILoad *iload)
{
    IOResult res;
    int id;
    while (IO_OK==(res=iload->OpenChunk()))
    {
        switch(id = iload->CurChunkID())
        {
            case MTL_HDR_CHUNK:
                res = MtlBase::Load(iload);
                break;
        }
        iload->CloseChunk();
        if (res!=IO_OK) 
            return res;
    }

    return IO_OK;
}

/*===========================================================================*\
 |  Updating and cloning
\*===========================================================================*/

RefTargetHandle plClothingMtl::Clone(RemapDir &remap)
{
    plClothingMtl *mnew = new plClothingMtl(FALSE);
    *((MtlBase*)mnew) = *((MtlBase*)this); 
    mnew->ReplaceReference(kRefBasic, remap.CloneRef(fBasicPB));

    BaseClone(this, mnew, remap);
    mnew->fIValid.SetEmpty();   

    return (RefTargetHandle)mnew;
}

void plClothingMtl::NotifyChanged() 
{
    NotifyDependents(FOREVER, PART_ALL, REFMSG_CHANGE);
}

void plClothingMtl::Update(TimeValue t, Interval& valid) 
{   
    //StdUVGen *gen = (StdUVGen *)fUVGen;
    //gen->SetUScl(1.0f, t);
    //gen->SetVScl(1.0f, t);
    //gen->Update(t, fIValid);
    valid &= fIValid;
}

/*===========================================================================*\
 |  Determine the characteristics of the material
\*===========================================================================*/

void plClothingMtl::SetAmbient(Color c, TimeValue t) {}     
void plClothingMtl::SetDiffuse(Color c, TimeValue t) {}     
void plClothingMtl::SetSpecular(Color c, TimeValue t) {}
void plClothingMtl::SetShininess(float v, TimeValue t) {}
                
Color plClothingMtl::GetAmbient(int mtlNum, BOOL backFace)  { return Color(0,0,0); }
Color plClothingMtl::GetDiffuse(int mtlNum, BOOL backFace)  { return Color(0,0,0); }
Color plClothingMtl::GetSpecular(int mtlNum, BOOL backFace) { return Color(0,0,0); }

float plClothingMtl::GetXParency(int mtlNum, BOOL backFace)
{
    /*
    int         opacity = fBasicPB->GetInt( kOpacity, 0 );
    float       alpha = 1.0f - ( (float)opacity / 100.0f );

    return alpha;
    */
    return 0;
}

float plClothingMtl::GetShininess(int mtlNum, BOOL backFace)    { return 0.0f; }
float plClothingMtl::GetShinStr(int mtlNum, BOOL backFace)  { return 0.0f; }
float plClothingMtl::WireSize(int mtlNum, BOOL backFace)        { return 0.0f; }

/////////////////////////////////////////////////////////////////

void plClothingMtl::SetupGfxMultiMaps(TimeValue t, Material *mtl, MtlMakerCallback &cb)
{
}

/*===========================================================================*\
 |  Actual shading takes place
\*===========================================================================*/

void plClothingMtl::Shade(ShadeContext& sc) 
{
    // Get the background color
    Color backColor, backTrans;
    sc.GetBGColor(backColor, backTrans);

    ShadeWithBackground(sc, backColor);
}

//// Requirements ////////////////////////////////////////////////////////////
//  Tells MAX what we need to render ourselves properly, such as translucency,
//  two-sidedness, etc. Flags are in imtl.h in the MAX SDK.

ULONG   plClothingMtl::Requirements( int subMtlNum ) 
{
    ULONG       req = 0;


    req = Mtl::Requirements( subMtlNum );

    // Uncomment this to get the background color fed to our ShadeWithBackground()
    // (slower processing tho)
//  req |= MTLREQ_BGCOL;

    //int blendType = fBasicPB->GetInt( kBlend );
    //if( blendType == kBlendAdd )
    //  req |= MTLREQ_ADDITIVE_TRANSP | MTLREQ_TRANSP;
    //else if( blendType == kBlendAlpha )
    //  req |= MTLREQ_TRANSP;
    //else if( fBasicPB->GetInt( kOpacity, 0 ) != 100 )
    //  req |= MTLREQ_TRANSP;

    return req;
}

void plClothingMtl::ShadeWithBackground(ShadeContext &sc, Color background)
{
#if 1
    TimeValue t = sc.CurTime();
    Color color(0, 0, 0);
    float alpha = 0.0;

    // Evaluate Base layer
    Texmap *map = fBasicPB->GetTexmap(kTexmap);
    if (map && map->ClassID() == LAYER_TEX_CLASS_ID)
    {
        plLayerTex *layer = (plLayerTex*)map;
        AColor evalColor = layer->EvalColor(sc);

        color = evalColor;
        alpha = evalColor.a;
    }

#if 1
    AColor black;
    black.Black();
    AColor white;
    white.White();


    SIllumParams ip;
    //if( fBasicPB->GetInt( kNormal ) == kEmissive )
    //{
        // Emissive objects don't get shaded
    //  ip.diffIllum = fBasicPB->GetColor(kColorAmb, t) * color;
    //  ip.diffIllum.ClampMinMax();
    //  ip.specIllum = black;
    //}
    //else
    {
        //
        // Shading setup
        //

        // Setup the parameters for the shader
        ip.amb = black;
        ip.diff = white; //fBasicPB->GetColor(kColor, t) * color;
        ip.spec = white;
        ip.diffIllum = black;
        ip.specIllum = black;
        ip.N = sc.Normal();
        ip.V = sc.V();


        //
        // Specularity
        //
        ip.sh_str = 0;
        ip.ph_exp = 0;
        ip.shine = 0;

        ip.softThresh = 0;



        // Do the shading
        Shader *myShader = GetShader(SHADER_BLINN);
        myShader->Illum(sc, ip);

        ip.diffIllum.ClampMinMax();
        ip.specIllum.ClampMinMax();
        ip.diffIllum = ip.amb * sc.ambientLight + ip.diff * ip.diffIllum;
    }

//  AColor returnColor = AColor(opac * ip.diffIllum + ip.specIllum, opac)
#endif

    // Get opacity and combine with alpha
    float opac = 1.0f; //float(fBasicPB->GetInt(kOpacity, t)) / 100.0f;
    //float opac = 1.0f;
    alpha *= opac;

    // MAX will do the additive/alpha/no blending for us based on what Requirements()
    // we tell it. However, since MAX's formula is bgnd*sc.out.t + sc.out.c,
    // we have to multiply our output color by the alpha.
    // If we ever need a more complicated blending function, you can request the
    // background color via Requirements() (otherwise it's just black) and then do
    // the blending yourself; however, if the transparency isn't set, the shadows
    // will be opaque, so be careful.
    Color outC = ip.diffIllum + ip.specIllum;

    sc.out.c = ( outC * alpha );
    sc.out.t = Color( 1.f - alpha, 1.f - alpha, 1.f - alpha );

#endif
}

float plClothingMtl::EvalDisplacement(ShadeContext& sc)
{
    return 0.0f;
}

Interval plClothingMtl::DisplacementValidity(TimeValue t)
{
    Interval iv;
    iv.SetInfinite();

    return iv;  
}

plClothingElement *plClothingMtl::FindElementByName(const ST::string &name) const
{
    for (plClothingElement* element : fElements)
    {
        if (element->fName == name)
            return element;
    }
    return nullptr;
}

void plClothingMtl::InitTilesets()
{
    hsAssert(fElements.empty(), "Tilesets already initialized");
    fElements.clear();
    fTilesets.assign(plClothingLayout::kMaxTileset, nullptr);

    plClothingElement::GetElements(fElements);
/*
    plClothingTileset *tileset = new plClothingTileset();
    tileset->SetName("shirt");
    tileset->AddElement(FindElementByName("shirt-chest"));
    tileset->AddElement(FindElementByName("shirt-sleeve"));
    fTilesets[plClothingLayout::kSetShirt] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("face");
    tileset->AddElement(FindElementByName("face"));
    fTilesets[plClothingLayout::kSetFace] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("eye");
    tileset->AddElement(FindElementByName("eyeball"));
    fTilesets[plClothingLayout::kSetEye] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("shoe");
    tileset->AddElement(FindElementByName("shoe-top"));
    tileset->AddElement(FindElementByName("shoe-bottom"));
    fTilesets[plClothingLayout::kSetShoe] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("pants");
    tileset->AddElement(FindElementByName("pants"));
    fTilesets[plClothingLayout::kSetPants] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("hand");
    tileset->AddElement(FindElementByName("hand-LOD"));
    tileset->AddElement(FindElementByName("hand-square"));
    tileset->AddElement(FindElementByName("hand-wide"));
    fTilesets[plClothingLayout::kSetHand] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("playerbook");
    tileset->AddElement(FindElementByName("playerbook"));
    fTilesets[plClothingLayout::kSetPlayerBook] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("backpack");
    tileset->AddElement(FindElementByName("backpack"));
    fTilesets[plClothingLayout::kSetBackpack] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("glasses");
    tileset->AddElement(FindElementByName("glasses-front"));
    tileset->AddElement(FindElementByName("glasses-side"));
    fTilesets[plClothingLayout::kSetGlasses] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("KI");
    tileset->AddElement(FindElementByName("KI"));
    fTilesets[plClothingLayout::kSetKI] = tileset;
    */
    plClothingTileset *tileset = new plClothingTileset();
    tileset->SetName("Torso");
    tileset->AddElement(FindElementByName("Chest"));
    tileset->AddElement(FindElementByName("Arm"));
    fTilesets[plClothingLayout::kSetShirt] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Head");
    tileset->AddElement(FindElementByName("Eye"));  
    tileset->AddElement(FindElementByName("Extra Hair"));
    tileset->AddElement(FindElementByName("Face"));
    tileset->AddElement(FindElementByName("Hat"));
    fTilesets[plClothingLayout::kSetFace] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Foot");
    tileset->AddElement(FindElementByName("Foot"));
    fTilesets[plClothingLayout::kSetShoe] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Legs");
    tileset->AddElement(FindElementByName("Legs"));
    fTilesets[plClothingLayout::kSetPants] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Hand");
    tileset->AddElement(FindElementByName("Finger"));
    tileset->AddElement(FindElementByName("LOD"));
    tileset->AddElement(FindElementByName("Palm"));
    fTilesets[plClothingLayout::kSetHand] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Player Book");
    tileset->AddElement(FindElementByName("Player Book"));
    fTilesets[plClothingLayout::kSetPlayerBook] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("Glasses");
    tileset->AddElement(FindElementByName("Glasses"));
    fTilesets[plClothingLayout::kSetGlasses] = tileset;
    
    tileset = new plClothingTileset();
    tileset->SetName("KI");
    tileset->AddElement(FindElementByName("KI"));
    fTilesets[plClothingLayout::kSetKI] = tileset;  

    tileset = new plClothingTileset();
    tileset->SetName("(unused)");
    fTilesets[plClothingLayout::kSetEye] = tileset;

    tileset = new plClothingTileset();
    tileset->SetName("(unused)");
    fTilesets[plClothingLayout::kSetBackpack] = tileset;    
}

void plClothingMtl::ReleaseTilesets()
{
    while (!fElements.empty()) {
        delete fElements.back();
        fElements.pop_back();
    }
    while (!fTilesets.empty()) {
        delete fTilesets.back();
        fTilesets.pop_back();
    }
}
