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/**
* @file llviewerpartsim.h
* @brief LLViewerPart class header file
*
* $LicenseInfo:firstyear=2003&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLVIEWERPARTSIM_H
#define LL_LLVIEWERPARTSIM_H
#include "llframetimer.h"
#include "llpointer.h"
#include "llpartdata.h"
#include "llviewerpartsource.h"
class LLViewerTexture;
class LLViewerPart;
class LLViewerRegion;
class LLVOPartGroup;
#define LL_MAX_PARTICLE_COUNT 8192
typedef void (*LLVPCallback)(LLViewerPart &part, const F32 dt);
///////////////////
//
// An individual particle
//
class LLViewerPart : public LLPartData
{
public:
~LLViewerPart();
public:
LLViewerPart();
void init(LLPointer<LLViewerPartSource> sourcep, LLViewerTexture *imagep, LLVPCallback cb);
U32 mPartID; // Particle ID used primarily for moving between groups
F32 mLastUpdateTime; // Last time the particle was updated
F32 mSkipOffset; // Offset against current group mSkippedTime
LLVPCallback mVPCallback; // Callback function for more complicated behaviors
LLPointer<LLViewerPartSource> mPartSourcep; // Particle source used for this object
LLViewerPart* mParent; // particle to connect to if this is part of a particle ribbon
LLViewerPart* mChild; // child particle for clean reference destruction
// Current particle state (possibly used for rendering)
LLPointer<LLViewerTexture> mImagep;
LLVector3 mPosAgent;
LLVector3 mVelocity;
LLVector3 mAccel;
LLVector3 mAxis;
LLColor4 mColor;
LLVector2 mScale;
F32 mStartGlow;
F32 mEndGlow;
LLColor4U mGlow;
static U32 sNextPartID;
};
class LLViewerPartGroup
{
public:
LLViewerPartGroup(const LLVector3 ¢er,
const F32 box_radius,
bool hud);
virtual ~LLViewerPartGroup();
void cleanup();
BOOL addPart(LLViewerPart* part, const F32 desired_size = -1.f);
void updateParticles(const F32 lastdt);
BOOL posInGroup(const LLVector3 &pos, const F32 desired_size = -1.f);
void shift(const LLVector3 &offset);
F32 getBoxRadius() { return mBoxRadius; }
F32 getBoxSide() { return mBoxSide; }
typedef std::vector<LLViewerPart*> part_list_t;
part_list_t mParticles;
const LLVector3 &getCenterAgent() const { return mCenterAgent; }
S32 getCount() const { return (S32) mParticles.size(); }
LLViewerRegion *getRegion() const { return mRegionp; }
void removeParticlesByID(const U32 source_id);
LLPointer<LLVOPartGroup> mVOPartGroupp;
BOOL mUniformParticles;
U32 mID;
F32 mSkippedTime;
bool mHud;
protected:
LLVector3 mCenterAgent;
F32 mBoxRadius;
F32 mBoxSide;
LLVector3 mMinObjPos;
LLVector3 mMaxObjPos;
LLViewerRegion *mRegionp;
};
class LLViewerPartSim : public LLSingleton<LLViewerPartSim>
{
LLSINGLETON(LLViewerPartSim);
public:
void destroyClass();
typedef std::vector<LLViewerPartGroup *> group_list_t;
typedef std::vector<LLPointer<LLViewerPartSource> > source_list_t;
void enable(bool enabled);
void shift(const LLVector3 &offset);
void updateSimulation();
void addPartSource(LLPointer<LLViewerPartSource> sourcep);
void cleanupRegion(LLViewerRegion *regionp);
static BOOL shouldAddPart(); // Just decides whether this particle should be added or not (for particle count capping)
F32 maxRate() // Return maximum particle generation rate
{
if (sParticleCount >= MAX_PART_COUNT)
{
return 1.f;
}
if (sParticleCount > PART_THROTTLE_THRESHOLD*sMaxParticleCount)
{
return (((F32)sParticleCount/(F32)sMaxParticleCount)-PART_THROTTLE_THRESHOLD)*PART_THROTTLE_RESCALE;
}
return 0.f;
}
F32 getRefRate() { return sParticleAdaptiveRate; }
F32 getBurstRate() {return sParticleBurstRate; }
void addPart(LLViewerPart* part);
void updatePartBurstRate() ;
void clearParticlesByID(const U32 system_id);
void clearParticlesByOwnerID(const LLUUID& task_id);
void removeLastCreatedSource();
const source_list_t* getParticleSystemList() const { return &mViewerPartSources; }
friend class LLViewerPartGroup;
BOOL aboveParticleLimit() const { return sParticleCount > sMaxParticleCount; }
static void setMaxPartCount(const S32 max_parts) { sMaxParticleCount = max_parts; }
static S32 getMaxPartCount() { return sMaxParticleCount; }
static void incPartCount(const S32 count) { sParticleCount += count; }
static void decPartCount(const S32 count) { sParticleCount -= count; }
U32 mID;
protected:
LLViewerPartGroup *createViewerPartGroup(const LLVector3 &pos_agent, const F32 desired_size, bool hud);
LLViewerPartGroup *put(LLViewerPart* part);
group_list_t mViewerPartGroups;
source_list_t mViewerPartSources;
LLFrameTimer mSimulationTimer;
static S32 sMaxParticleCount;
static S32 sParticleCount;
static F32 sParticleAdaptiveRate;
static F32 sParticleBurstRate;
static const S32 MAX_PART_COUNT;
static const F32 PART_THROTTLE_THRESHOLD;
static const F32 PART_THROTTLE_RESCALE;
static const F32 PART_ADAPT_RATE_MULT;
static const F32 PART_ADAPT_RATE_MULT_RECIP;
//debug use only
public:
static S32 sParticleCount2;
static void checkParticleCount(U32 size = 0) ;
};
#endif // LL_LLVIEWERPARTSIM_H
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