CWE-ou-minkata/Sources/Plasma/PubUtilLib/plScene/plVisMgr.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 "plVisMgr.h"

#include "plVisRegion.h"

hsBitVector plVisMgr::fIdxSet;
hsBitVector plVisMgr::fIdxNot;

plVisMgr::plVisMgr()
:   fMaxSet(kCharacter),
    fMaxNot(-1)
{
    ResetNormal();
}

plVisMgr::~plVisMgr()
{
}

hsBool plVisMgr::MsgReceive(plMessage* msg)
{

    return hsKeyedObject::MsgReceive(msg);
}

void plVisMgr::Read(hsStream* s, hsResMgr* mgr)
{
    hsKeyedObject::Read(s, mgr);

}

void plVisMgr::Write(hsStream* s, hsResMgr* mgr)
{
    hsKeyedObject::Write(s, mgr);
}

void plVisMgr::Register(plVisRegion* reg, hsBool bnot)
{
    // This should happen pretty infrequently, or
    // I wouldn't be doing it so cloth-headed-ly.
    hsTArray<plVisRegion*>& regions = bnot ? fNotRegions : fRegions;
    hsBitVector& indices = bnot ? fIdxNot : fIdxSet;
    int& maxIdx = bnot ? fMaxNot : fMaxSet;
    int i;
    for( i = kNumReserved; ; i++ )
    {
        if( !indices.IsBitSet(i) )
        {
            if( i > maxIdx )
                maxIdx = i;

            indices.SetBit(i);
            reg->SetIndex(i);
            regions.Append(reg);
            return;
        }
    }
    hsAssert(false, "Infinite bitvector has all bits set?");
}

void plVisMgr::UnRegister(plVisRegion* reg, hsBool bnot)
{
    // Mark our index for recycling
    hsBitVector& indices= bnot ? fIdxNot : fIdxSet;
    indices.ClearBit(reg->GetIndex());

    // Nuke the region from our list.
    hsTArray<plVisRegion*>& regions = bnot ? fNotRegions : fRegions;
    int idx = regions.Find(reg);
    if( regions.kMissingIndex != idx )
        regions.Remove(idx);
}

void plVisMgr::Eval(const hsPoint3& pos)
{
    fVisSet = fOnBitSet;

    int i;
    for( i = 0; i < fRegions.GetCount(); i++ )
    {
        hsAssert(fRegions[i], "Nil region in list");
        if( !fOffBitSet.IsBitSet(fRegions[i]->GetIndex()) )
        {
            if( fRegions[i]->Eval(pos) )
            {
                fVisSet.SetBit(fRegions[i]->GetIndex());
                if( fRegions[i]->DisableNormal() )
                {
                    fVisSet.ClearBit(kNormal);
                    fVisSet.SetBit(kCharacter);
                }
            }
        }
    }

    fVisNot = fOnBitNot;

    for( i = 0; i < fNotRegions.GetCount(); i++ )
    {
        hsAssert(fNotRegions[i], "Nil region in list");
        if( !fOffBitNot.IsBitSet(fNotRegions[i]->GetIndex()) )
        {
            if( fNotRegions[i]->Eval(pos) )
            {
                fVisNot.SetBit(fNotRegions[i]->GetIndex());
            }
        }
    }

    ResetNormal();
}

void plVisMgr::ResetNormal()
{
    fOnBitSet.Clear();
    fOnBitSet.SetBit(kNormal);

    fOffBitSet.Clear();
    fOnBitNot.Clear();
    fOffBitNot.Clear();
}

void plVisMgr::DisableNormal()
{
    fOnBitSet.Clear();
    if( fMaxSet > 0 )
        fOffBitSet.Set(fMaxSet);

    fOnBitNot.Clear();
    if( fMaxNot > 0 )
        fOffBitNot.Set(fMaxNot);
}

void plVisMgr::EnableVisSet(int idx, hsBool isNot)
{
    hsBitVector& offs = isNot ? fOffBitNot : fOffBitSet;

    offs.ClearBit(idx);
}

void plVisMgr::EnableVisSets(const hsBitVector& enabled, hsBool isNot)
{
    hsBitVector& offs = isNot ? fOffBitNot : fOffBitSet;
    offs -= enabled;
}

void plVisMgr::ForceVisSet(int idx, hsBool isNot)
{
    EnableVisSet(idx, isNot);
    hsBitVector& ons = isNot ? fOnBitNot : fOnBitSet;
    ons.SetBit(idx);
}

void plVisMgr::ForceVisSets(const hsBitVector& enabled, hsBool isNot)
{
    EnableVisSets(enabled, isNot);
    hsBitVector& ons = isNot ? fOnBitNot : fOnBitSet;
    ons |= enabled;
}

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

plVisMgr* plGlobalVisMgr::fInstance = nil;

void plGlobalVisMgr::Init()
{
    fInstance = TRACKED_NEW plVisMgr;
    fInstance->RegisterAs(kGlobalVisMgr_KEY);
}

void plGlobalVisMgr::DeInit()
{
    if (fInstance)
    {
        fInstance->UnRegisterAs(kGlobalVisMgr_KEY);
        fInstance = nil;
    }
}