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/*==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==*/
#ifndef plSpaceTree_inc
#define plSpaceTree_inc
#include "hsTemplates.h"
#include "hsBounds.h"
#include "pnFactory/plCreatable.h"
#include "hsBitVector.h"
class hsStream;
class hsResMgr;
class plVolumeIsect;
class plSpaceTreeNode
{
public:
enum {
kNone = 0x0,
kIsLeaf = 0x1,
kDirty = 0x2,
kDisabled = 0x4,
kEmpty = 0x8,
kEnabledTemp = 0x10
};
hsBounds3Ext fWorldBounds;
UInt16 fFlags; // mostly for alignment;
Int16 fParent;
union {
Int16 fChildren[2]; // Children are actually in same array as parent
Int16 fLeafIndex;
};
Int16 GetChild(int w) const { hsAssert(!(fFlags & kIsLeaf), "Getting Child of leaf node"); return fChildren[w]; }
Int16 GetParent() const { return fParent; }
Int16 GetLeaf() const { hsAssert(fFlags & kIsLeaf, "Getting leaf idx off interior node"); return fLeafIndex; }
hsBool IsLeaf() const { return 0 != (fFlags & kIsLeaf); }
const hsBounds3Ext& GetWorldBounds() const { return fWorldBounds; }
// Kind of hate this. Would like to blast the whole thing in, but
// the bounds are a real class.
void Read(hsStream* s);
void Write(hsStream* s);
};
class plSpaceTree : public plCreatable
{
public:
enum plHarvestFlags {
kNone = 0x0,
kSortBackToFront = 0x1,
kSortFrontToBack = 0x2
};
enum {
kRootParent = -1
};
private:
hsTArray<plSpaceTreeNode> fTree;
const hsBitVector* fCache;
Int16 fRoot;
Int16 fNumLeaves;
UInt16 fHarvestFlags;
mutable plVolumeIsect* fCullFunc;
hsPoint3 fViewPos;
void IRefreshRecur(Int16 which);
void IHarvestAndCullLeaves(const plSpaceTreeNode& subRoot, hsTArray<Int16>& list) const;
void IHarvestLeaves(const plSpaceTreeNode& subRoot, hsTArray<Int16>& list) const;
void IHarvestAndCullLeaves(const plSpaceTreeNode& subRoot, hsBitVector& totList, hsBitVector& list) const;
void IHarvestLeaves(const plSpaceTreeNode& subRoot, hsBitVector& totList, hsBitVector& list) const;
void IHarvestLevel(Int16 subRoot, int level, int currLevel, hsTArray<Int16>& list) const;
void IHarvestAndCullEnabledLeaves(Int16 subRoot, const hsBitVector& cache, hsTArray<Int16>& list) const;
void IHarvestEnabledLeaves(Int16 subRoot, const hsBitVector& cache, hsTArray<Int16>& list) const;
void IHarvestEnabledLeaves(Int16 subIdx, const hsBitVector& cache, hsBitVector& totList, hsBitVector& list) const;
void IEnableLeaf(Int16 idx, hsBitVector& cache) const;
public:
plSpaceTree();
virtual ~plSpaceTree();
CLASSNAME_REGISTER( plSpaceTree );
GETINTERFACE_ANY( plSpaceTree, plCreatable );
void SetViewPos(const hsPoint3& p) { fViewPos = p; }
const hsPoint3& GetViewPos() const { return fViewPos; }
const plSpaceTreeNode& GetNode(Int16 w) const { return fTree[w]; }
Int16 GetRoot() const { return fRoot; }
hsBool IsRoot(Int16 w) const { return fRoot == w; }
hsBool IsLeaf(Int16 w) const { return GetNode(w).IsLeaf(); }
void HarvestLeaves(hsBitVector& totList, hsBitVector& list) const;
void HarvestLeaves(hsBitVector& list) const;
void HarvestLeaves(plVolumeIsect* cullFunc, hsBitVector& list) const;
void HarvestLeaves(Int16 subRoot, hsBitVector& list) const;
void HarvestLeaves(Int16 subRoot, hsBitVector& totList, hsBitVector& list) const;
void HarvestLeaves(hsTArray<Int16>& list) const;
void HarvestLeaves(plVolumeIsect* cullFunc, hsTArray<Int16>& list) const;
void HarvestLeaves(Int16 subRoot, hsTArray<Int16>& list) const;
void EnableLeaf(Int16 idx, hsBitVector& cache) const;
void EnableLeaves(const hsTArray<Int16>& list, hsBitVector& cache) const;
void HarvestEnabledLeaves(plVolumeIsect* cullFunc, const hsBitVector& cache, hsTArray<Int16>& list) const;
void SetCache(const hsBitVector* cache) { fCache = cache; }
void BitVectorToList(hsTArray<Int16>& list, const hsBitVector& bitVec) const;
void SetHarvestFlags(plHarvestFlags f) { fHarvestFlags = f; }
UInt16 GetHarvestFlags() const { return fHarvestFlags; }
UInt16 HasLeafFlag(Int16 w, UInt16 f) const { return GetNode(w).fFlags & f; }
void SetLeafFlag(Int16 w, UInt16 f, hsBool on=true);
void ClearLeafFlag(Int16 w, UInt16 f);
void ClearTreeFlag(UInt16 f);
void SetTreeFlag(UInt16 f, hsBool on=true);
hsBool IsDisabled(UInt16 w) const { return (GetNode(w).fFlags & plSpaceTreeNode::kDisabled) || (fCache && !fCache->IsBitSet(w)); }
// Should GetWorldBounds check and refresh if needed?
const hsBounds3Ext& GetWorldBounds() const { return GetNode(GetRoot()).fWorldBounds; }
void MoveLeaf(Int16 idx, const hsBounds3Ext& newWorldBnd);
void Refresh();
hsBool IsEmpty() const { return 0 != (GetNode(GetRoot()).fFlags & plSpaceTreeNode::kEmpty); }
hsBool IsDirty() const { return 0 != (GetNode(GetRoot()).fFlags & plSpaceTreeNode::kDirty); }
void MakeDirty() { fTree[GetRoot()].fFlags |= plSpaceTreeNode::kDirty; }
Int16 GetNumLeaves() const { return fNumLeaves; }
virtual void Read(hsStream* s, hsResMgr* mgr);
virtual void Write(hsStream* s, hsResMgr* mgr);
void HarvestLevel(int level, hsTArray<Int16>& list) const;
friend class plSpaceTreeMaker;
};
#endif // plSpaceTree_inc