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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/>.
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==*/
#ifndef plParticleEmitter_inc
#define plParticleEmitter_inc
#include "hsGeometry3.h"
#include "hsBounds.h"
#include "pnNetCommon/plSynchedValue.h"
#include "hsColorRGBA.h"
class hsBounds3Ext;
class plParticleSystem;
class plParticleCore;
class plParticleExt;
class plParticleGenerator;
class plSimpleParticleGenerator;
class hsResMgr;
#include "plEffectTargetInfo.h"
// This just holds a bunch of parameters for an emission location. A particle system can have several of these
class plParticleEmitter : public plCreatable
{
friend class plParticleSystem;
friend class plSimpleParticleGenerator;
public:
plParticleEmitter();
~plParticleEmitter();
void Init(plParticleSystem *system, UInt32 maxParticles, UInt32 spanIndex, UInt32 miscFlags,
plParticleGenerator *gen = nil);
void Clone(plParticleEmitter* src, UInt32 spanIndex);
plParticleCore *GetParticleArray() const { return fParticleCores; }
UInt32 GetParticleCount() const { return fNumValidParticles; }
UInt32 GetNumTiles() const;
const hsBounds3Ext &GetBoundingBox() const { return fBoundBox; }
UInt32 GetSpanIndex() const { return fSpanIndex; }
const hsMatrix44 &GetLocalToWorld() const;
void AddParticle(hsPoint3 &pos, hsVector3 &velocity, UInt32 tileIndex,
hsScalar hSize, hsScalar vSize, hsScalar scale, hsScalar invMass, hsScalar life,
hsPoint3 &orientation, UInt32 miscFlags, hsScalar radsPerSec=0);
void WipeExistingParticles();
void KillParticles(hsScalar num, hsScalar timeToDie, UInt8 flags);
UInt16 StealParticlesFrom(plParticleEmitter *victim, UInt16 num); // returns the number actually stolen
void TranslateAllParticles(hsPoint3 &amount); // Used to recenter the system when linking between ages.
void UpdateGenerator(UInt32 paramID, hsScalar paramValue);
static UInt32 CreateHexColor(const hsColorRGBA &color);
static UInt32 CreateHexColor(const hsScalar r, const hsScalar g, const hsScalar b, const hsScalar a);
void OverrideLocalToWorld(const hsMatrix44& l2w);
void UnOverrideLocalToWorld() { fMiscFlags &= ~kOverrideLocalToWorld; }
hsBool LocalToWorldOverridden() const { return 0 != (fMiscFlags & kOverrideLocalToWorld); }
void SetTimeToLive(hsScalar dt) { fTimeToLive = dt; }
hsScalar GetTimeToLive() const { return fTimeToLive; } // 0 time to live is never turn off.
CLASSNAME_REGISTER( plParticleEmitter );
GETINTERFACE_ANY( plParticleEmitter, plCreatable);
virtual void Read(hsStream* s, hsResMgr *mgr);
virtual void Write(hsStream* s, hsResMgr *mgr);
enum // Miscellaneous flags
{
kMatIsEmissive = 0x00000001,
kNormalUp = 0x00000010,
kNormalVelUpVel = 0x00000020,
kNormalFromCenter = 0x00000040,
kNormalDynamicMask = kNormalVelUpVel | kNormalFromCenter, // precalc methods that need updating each frame
kNormalPrecalcMask = kNormalDynamicMask | kNormalUp, // All types where emitter precalculates the normal
kNormalViewFacing = 0x00000100,
kNormalNearestLight = 0x00000200,
kNeedsUpdate = 0x01000000,
kBorrowedGenerator = 0x02000000,
kOverrideLocalToWorld = 0x04000000,
kOnReserve = 0x08000000,
kOrientationUp = 0x10000000,
kOrientationVelocityBased = 0x20000000,
kOrientationVelocityStretch = 0x40000000,
kOrientationVelocityFlow = 0x80000000,
kOrientationVelocityMask = kOrientationVelocityBased | kOrientationVelocityStretch | kOrientationVelocityFlow, // Velocity dependent
kOrientationMask = kOrientationUp | kOrientationVelocityMask,
};
UInt32 fMiscFlags;
protected:
plParticleSystem *fSystem; // The particle system this belongs to.
plParticleCore *fParticleCores; // The particle pool, created on init, initialized as needed, and recycled.
plParticleExt *fParticleExts; // Same mapping as the Core pool. Contains extra info the render pipeline
// doesn't need.
plParticleGenerator *fGenerator; // Optional auto generator (have this be nil if you don't want auto-generation)
UInt32 fSpanIndex; // Index of the span that this emitter uses.
UInt32 fNumValidParticles;
UInt32 fMaxParticles;
hsBounds3Ext fBoundBox;
plEffectTargetInfo fTargetInfo; // A collection of pointers and strides that plParticleEffects will manipulate.
hsColorRGBA fColor;
hsMatrix44 fLocalToWorld;
hsScalar fTimeToLive;
void IClear();
void ISetupParticleMem();
void ISetSystem(plParticleSystem *sys) { fSystem = sys; }
hsBool IUpdate(hsScalar delta);
void IUpdateParticles(hsScalar delta);
void IUpdateBoundsAndNormals(hsScalar delta);
void IRemoveParticle(UInt32 index);
};
#endif