CWE-ou-minkata/Sources/Plasma/PubUtilLib/plDrawable/plDynaRippleMgrVS.cpp

/*==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/>.

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 "hsTypes.h"
#include "plDynaRippleVSMgr.h"
#include "plDynaDecal.h"

#include "plPrintShape.h"

#include "plCutter.h"

#include "plgDispatch.h"

#include "hsStream.h"
#include "hsResMgr.h"
#include "hsTimer.h"

#include "plWaveSetBase.h"
#include "plRipVSConsts.h"

#include "plSurface/hsGMaterial.h"
#include "plSurface/plLayerInterface.h"

#include "plMessage/plDynaDecalEnableMsg.h"
#include "plMessage/plRippleShapeMsg.h"

#include "plMessage/plAvatarMsg.h"
#include "plAvatar/plAvBrainHuman.h"
#include "plAvatar/plArmatureMod.h"

#include "plMath/plRandom.h"
static plRandom sRand;

#include "plTweak.h"

int plDynaRippleVSMgr::INewDecal()
{
    int idx = fDecals.GetCount();

    plDynaRippleVS* rip = TRACKED_NEW plDynaRippleVS();
    rip->fC1U = fInitUVW.fX;
    rip->fC2U = (fInitUVW.fX - fFinalUVW.fX) / (fLifeSpan * fFinalUVW.fX);

    rip->fC1V = fInitUVW.fY;
    rip->fC2V = (fInitUVW.fY - fFinalUVW.fY) / (fLifeSpan * fFinalUVW.fY);

    fDecals.Append(rip);

    return idx;
}


plDynaRippleVSMgr::plDynaRippleVSMgr()
:   fWaveSetBase(nil)
{
}

plDynaRippleVSMgr::~plDynaRippleVSMgr()
{
}

void plDynaRippleVSMgr::Read(hsStream* stream, hsResMgr* mgr)
{
    plDynaRippleMgr::Read(stream, mgr);

    mgr->ReadKeyNotifyMe(stream, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, 0, kRefWaveSetBase), plRefFlags::kPassiveRef);
}

void plDynaRippleVSMgr::Write(hsStream* stream, hsResMgr* mgr)
{
    plDynaRippleMgr::Write(stream, mgr);

    mgr->WriteKey(stream, fWaveSetBase);
}

hsBool plDynaRippleVSMgr::MsgReceive(plMessage* msg)
{
    hsBool retVal = plDynaRippleMgr::MsgReceive(msg);
    if( retVal )
        return true;

    plGenRefMsg* refMsg = plGenRefMsg::ConvertNoRef(msg);
    if( refMsg )
    {
        switch( refMsg->fType )
        {
        case kRefWaveSetBase:
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
                fWaveSetBase = plWaveSetBase::ConvertNoRef(refMsg->GetRef());
            else
                fWaveSetBase = nil;
            return true;
        }
    }
    return false;
}

hsBool plDynaRippleVSMgr::ICheckRTMat()
{
    if( !fMatRTShade )
        return false;

    if( !fWaveSetBase )
        return false;

    if( fMatRTShade->GetLayer(0)->GetVertexShader() )
        return true;

    plRipVSConsts ripConsts;

    ripConsts.fC1U = fInitUVW.fX;
    ripConsts.fC2U = (fInitUVW.fX - fFinalUVW.fX) / (fLifeSpan * fFinalUVW.fX);

    ripConsts.fC1V = fInitUVW.fY;
    ripConsts.fC2V = (fInitUVW.fY - fFinalUVW.fY) / (fLifeSpan * fFinalUVW.fY);

    ripConsts.fInitAtten = fInitAtten;
    ripConsts.fLife = fLifeSpan;
    ripConsts.fDecay = fDecayStart;
    ripConsts.fRamp = fRampEnd;

    return fWaveSetBase->SetupRippleMat(fMatRTShade, ripConsts);
}

hsBool plDynaRippleVSMgr::IRippleFromShape(const plPrintShape* shape, hsBool force)
{
    if( !ICheckRTMat() )
        return false;

    if( !shape )
        return false;

    hsBool retVal = false;

    plDynaDecalInfo& info = IGetDecalInfo(UInt32(shape), shape->GetKey());

    const hsMatrix44& shapeL2W = shape->GetOwner()->GetLocalToWorld();

    plConst(hsScalar) kMinDist(2.0f);
    plConst(hsScalar) kMinTime(1.5f);
    double t = hsTimer::GetSysSeconds();
    hsScalar dt = hsScalar(t - info.fLastTime) * sRand.RandZeroToOne();
    hsBool longEnough = (dt >= kMinTime);
    hsBool farEnough = (hsVector3(&info.fLastPos, &shapeL2W.GetTranslate()).Magnitude() > kMinDist);
    if( force || longEnough || farEnough )
    {
        hsPoint3 pos = shapeL2W.GetTranslate();

        // We'll perturb the position a little so it doesn't look quite so regular,
        // but we perturb it more if we're just standing still
        hsVector3 randPert(sRand.RandMinusOneToOne(), sRand.RandMinusOneToOne(), 0);
        randPert.Normalize();
        if( !farEnough )
        {
            plConst(hsScalar) kRandPert = 0.5f;
            randPert *= kRandPert;
        }
        else
        {
            plConst(hsScalar) kRandPert = 0.15f;
            randPert *= kRandPert;
        }
        pos += randPert;

        // Are we potentially touching the water?
        hsScalar waterHeight = fWaveSetBase->GetHeight();
        if( (pos.fZ - fScale.fZ * shape->GetHeight() < waterHeight)
            &&(pos.fZ + fScale.fZ * shape->GetHeight() > waterHeight) )
        {

            hsVector3 dir(fWaveSetBase->GetWindDir());
            hsVector3 up(0.f, 0.f, 1.f);

            hsScalar wid = hsMaximum(shape->GetWidth(), shape->GetLength());
            
            plConst(hsScalar) kMaxWaterDepth(1000.f);

            hsVector3 size(wid * fScale.fX, wid * fScale.fY, kMaxWaterDepth);
            fCutter->SetLength(size);
            fCutter->Set(pos, dir, up);


            hsBool hit = ICutoutTargets(t);
            if( hit )
            {
                info.fLastTime = t;
                info.fLastPos = shapeL2W.GetTranslate();
                retVal = true;
            }
            else
            {
                retVal = false; // No-effect else just for break points.
            }
        }
    }
    return retVal;
}