696 lines
16 KiB
C++
696 lines
16 KiB
C++
/**
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* @file llviewerpartsim.cpp
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* @brief LLViewerPart class implementation
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*
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* Copyright (c) 2003-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "llviewerpartsim.h"
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#include "llviewercontrol.h"
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#include "llagent.h"
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#include "llviewercamera.h"
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#include "llviewerobjectlist.h"
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#include "llviewerpartsource.h"
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#include "llviewerregion.h"
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#include "llvopartgroup.h"
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#include "llworld.h"
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#include "pipeline.h"
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const S32 MAX_PART_COUNT = 4096;
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const F32 PART_SIM_BOX_SIDE = 16.f;
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const F32 PART_SIM_BOX_OFFSET = 0.5f*PART_SIM_BOX_SIDE;
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const F32 PART_SIM_BOX_RAD = 0.5f*F_SQRT3*PART_SIM_BOX_SIDE;
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//static
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S32 LLViewerPartSim::sMaxParticleCount = 0;
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S32 LLViewerPartSim::sParticleCount = 0;
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U32 LLViewerPart::sNextPartID = 1;
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F32 calc_desired_size(LLVector3 pos, LLVector2 scale)
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{
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F32 desired_size = (pos-gCamera->getOrigin()).magVec();
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desired_size /= 4;
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return llclamp(desired_size, scale.magVec()*0.5f, PART_SIM_BOX_SIDE*2);
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}
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LLViewerPart::LLViewerPart()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mPartSourcep = NULL;
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}
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LLViewerPart::~LLViewerPart()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mPartSourcep = NULL;
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}
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LLViewerPart &LLViewerPart::operator=(const LLViewerPart &part)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mPartID = part.mPartID;
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mFlags = part.mFlags;
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mMaxAge = part.mMaxAge;
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mStartColor = part.mStartColor;
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mEndColor = part.mEndColor;
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mStartScale = part.mStartScale;
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mEndScale = part.mEndScale;
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mPosOffset = part.mPosOffset;
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mParameter = part.mParameter;
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mLastUpdateTime = part.mLastUpdateTime;
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mVPCallback = part.mVPCallback;
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mPartSourcep = part.mPartSourcep;
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mImagep = part.mImagep;
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mPosAgent = part.mPosAgent;
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mVelocity = part.mVelocity;
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mAccel = part.mAccel;
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mColor = part.mColor;
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mScale = part.mScale;
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return *this;
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}
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void LLViewerPart::init(LLViewerPartSource *sourcep, LLViewerImage *imagep, LLVPCallback cb)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mPartID = LLViewerPart::sNextPartID;
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LLViewerPart::sNextPartID++;
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mFlags = 0x00f;
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mLastUpdateTime = 0.f;
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mMaxAge = 10.f;
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mVPCallback = cb;
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mPartSourcep = sourcep;
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mImagep = imagep;
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}
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/////////////////////////////
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//
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// LLViewerPartGroup implementation
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//
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//
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LLViewerPartGroup::LLViewerPartGroup(const LLVector3 ¢er_agent, const F32 box_side)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mVOPartGroupp = NULL;
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mUniformParticles = TRUE;
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mRegionp = gWorldPointer->getRegionFromPosAgent(center_agent);
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llassert_always(center_agent.isFinite());
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if (!mRegionp)
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{
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//llwarns << "No region at position, using agent region!" << llendl;
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mRegionp = gAgent.getRegion();
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}
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mCenterAgent = center_agent;
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mBoxRadius = F_SQRT3*box_side*0.5f;
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mVOPartGroupp = (LLVOPartGroup *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_PART_GROUP, getRegion());
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mVOPartGroupp->setViewerPartGroup(this);
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mVOPartGroupp->setPositionAgent(getCenterAgent());
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F32 scale = box_side * 0.5f;
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mVOPartGroupp->setScale(LLVector3(scale,scale,scale));
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gPipeline.addObject(mVOPartGroupp);
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LLSpatialGroup* group = mVOPartGroupp->mDrawable->getSpatialGroup();
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LLVector3 center(group->mOctreeNode->getCenter());
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LLVector3 size(group->mOctreeNode->getSize());
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size += LLVector3(0.01f, 0.01f, 0.01f);
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mMinObjPos = center - size;
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mMaxObjPos = center + size;
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static U32 id_seed = 0;
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mID = ++id_seed;
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}
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LLViewerPartGroup::~LLViewerPartGroup()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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cleanup();
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S32 count = (S32) mParticles.size();
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mParticles.clear();
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LLViewerPartSim::decPartCount(count);
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}
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void LLViewerPartGroup::cleanup()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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if (mVOPartGroupp)
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{
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if (!mVOPartGroupp->isDead())
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{
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gObjectList.killObject(mVOPartGroupp);
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}
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mVOPartGroupp = NULL;
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}
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}
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BOOL LLViewerPartGroup::posInGroup(const LLVector3 &pos, const F32 desired_size)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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if ((pos.mV[VX] < mMinObjPos.mV[VX])
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|| (pos.mV[VY] < mMinObjPos.mV[VY])
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|| (pos.mV[VZ] < mMinObjPos.mV[VZ]))
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{
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return FALSE;
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}
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if ((pos.mV[VX] > mMaxObjPos.mV[VX])
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|| (pos.mV[VY] > mMaxObjPos.mV[VY])
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|| (pos.mV[VZ] > mMaxObjPos.mV[VZ]))
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{
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return FALSE;
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}
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if (desired_size > 0 &&
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(desired_size < mBoxRadius*0.5f ||
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desired_size > mBoxRadius*2.f))
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{
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return FALSE;
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}
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return TRUE;
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}
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BOOL LLViewerPartGroup::addPart(LLViewerPart* part, F32 desired_size)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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BOOL uniform_part = part->mScale.mV[0] == part->mScale.mV[1] &&
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!(part->mFlags & LLPartData::LL_PART_FOLLOW_VELOCITY_MASK);
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if (!posInGroup(part->mPosAgent, desired_size) ||
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(mUniformParticles && !uniform_part) ||
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(!mUniformParticles && uniform_part))
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{
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return FALSE;
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}
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gPipeline.markRebuild(mVOPartGroupp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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mParticles.push_back(part);
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LLViewerPartSim::incPartCount(1);
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return TRUE;
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}
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void LLViewerPartGroup::removePart(const S32 part_num)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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// Remove the entry for the particle we just deleted.
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mParticles.erase(mParticles.begin() + part_num);
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if (mVOPartGroupp.notNull())
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{
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gPipeline.markRebuild(mVOPartGroupp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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}
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LLViewerPartSim::decPartCount(1);
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}
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void LLViewerPartGroup::updateParticles(const F32 dt)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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S32 i;
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LLVector3 gravity(0.f, 0.f, -9.8f);
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LLViewerRegion *regionp = getRegion();
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S32 end = (S32) mParticles.size();
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for (i = 0; i < end; i++)
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{
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LLVector3 a(0.f, 0.f, 0.f);
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LLViewerPart& part = *((LLViewerPart*) mParticles[i]);
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// Update current time
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const F32 cur_time = part.mLastUpdateTime + dt;
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const F32 frac = cur_time/part.mMaxAge;
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// "Drift" the object based on the source object
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if (part.mFlags & LLPartData::LL_PART_FOLLOW_SRC_MASK)
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{
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part.mPosAgent = part.mPartSourcep->mPosAgent;
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part.mPosAgent += part.mPosOffset;
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}
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// Do a custom callback if we have one...
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if (part.mVPCallback)
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{
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(*part.mVPCallback)(part, dt);
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}
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if (part.mFlags & LLPartData::LL_PART_WIND_MASK)
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{
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LLVector3 tempVel(part.mVelocity);
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part.mVelocity *= 1.f - 0.1f*dt;
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part.mVelocity += 0.1f*dt*regionp->mWind.getVelocity(regionp->getPosRegionFromAgent(part.mPosAgent));
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}
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// Now do interpolation towards a target
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if (part.mFlags & LLPartData::LL_PART_TARGET_POS_MASK)
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{
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F32 remaining = part.mMaxAge - part.mLastUpdateTime;
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F32 step = dt / remaining;
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step = llclamp(step, 0.f, 0.1f);
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step *= 5.f;
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// we want a velocity that will result in reaching the target in the
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// Interpolate towards the target.
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LLVector3 delta_pos = part.mPartSourcep->mTargetPosAgent - part.mPosAgent;
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delta_pos /= remaining;
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part.mVelocity *= (1.f - step);
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part.mVelocity += step*delta_pos;
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}
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if (part.mFlags & LLPartData::LL_PART_TARGET_LINEAR_MASK)
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{
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LLVector3 delta_pos = part.mPartSourcep->mTargetPosAgent - part.mPartSourcep->mPosAgent;
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part.mPosAgent = part.mPartSourcep->mPosAgent;
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part.mPosAgent += frac*delta_pos;
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part.mVelocity = delta_pos;
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}
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else
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{
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// Do velocity interpolation
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part.mPosAgent += dt*part.mVelocity;
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part.mPosAgent += 0.5f*dt*dt*part.mAccel;
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part.mVelocity += part.mAccel*dt;
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}
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// Do a bounce test
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if (part.mFlags & LLPartData::LL_PART_BOUNCE_MASK)
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{
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// Need to do point vs. plane check...
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// For now, just check relative to object height...
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F32 dz = part.mPosAgent.mV[VZ] - part.mPartSourcep->mPosAgent.mV[VZ];
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if (dz < 0)
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{
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part.mPosAgent.mV[VZ] += -2.f*dz;
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part.mVelocity.mV[VZ] *= -0.75f;
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}
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}
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// Reset the offset from the source position
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if (part.mFlags & LLPartData::LL_PART_FOLLOW_SRC_MASK)
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{
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part.mPosOffset = part.mPosAgent;
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part.mPosOffset -= part.mPartSourcep->mPosAgent;
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}
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// Do color interpolation
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if (part.mFlags & LLPartData::LL_PART_INTERP_COLOR_MASK)
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{
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part.mColor.setVec(part.mStartColor);
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part.mColor *= 1.f - frac;
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part.mColor.mV[3] *= (1.f - frac)*part.mStartColor.mV[3];
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part.mColor += frac*part.mEndColor;
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part.mColor.mV[3] += frac*part.mEndColor.mV[3];
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}
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// Do scale interpolation
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if (part.mFlags & LLPartData::LL_PART_INTERP_SCALE_MASK)
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{
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part.mScale.setVec(part.mStartScale);
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part.mScale *= 1.f - frac;
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part.mScale += frac*part.mEndScale;
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}
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// Set the last update time to now.
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part.mLastUpdateTime = cur_time;
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// Kill dead particles (either flagged dead, or too old)
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if ((part.mLastUpdateTime > part.mMaxAge) || (LLViewerPart::LL_PART_DEAD_MASK == part.mFlags))
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{
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end--;
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LLPointer<LLViewerPart>::swap(mParticles[i], mParticles[end]);
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}
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else
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{
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F32 desired_size = calc_desired_size(part.mPosAgent, part.mScale);
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if (!posInGroup(part.mPosAgent, desired_size))
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{
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// Transfer particles between groups
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gWorldPointer->mPartSim.put(&part);
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end--;
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LLPointer<LLViewerPart>::swap(mParticles[i], mParticles[end]);
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}
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}
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}
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S32 removed = (S32)mParticles.size() - end;
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if (removed > 0)
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{
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// we removed one or more particles, so flag this group for update
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mParticles.erase(mParticles.begin() + end, mParticles.end());
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if (mVOPartGroupp.notNull())
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{
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gPipeline.markRebuild(mVOPartGroupp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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}
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LLViewerPartSim::decPartCount(removed);
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}
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// Kill the viewer object if this particle group is empty
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if (mParticles.empty())
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{
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gObjectList.killObject(mVOPartGroupp);
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mVOPartGroupp = NULL;
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}
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}
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void LLViewerPartGroup::shift(const LLVector3 &offset)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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mCenterAgent += offset;
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mMinObjPos += offset;
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mMaxObjPos += offset;
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S32 count = (S32) mParticles.size();
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S32 i;
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for (i = 0; i < count; i++)
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{
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mParticles[i]->mPosAgent += offset;
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}
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}
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//////////////////////////////////
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//
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// LLViewerPartSim implementation
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//
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//
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LLViewerPartSim::LLViewerPartSim()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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sMaxParticleCount = gSavedSettings.getS32("RenderMaxPartCount");
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static U32 id_seed = 0;
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mID = ++id_seed;
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}
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LLViewerPartSim::~LLViewerPartSim()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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S32 i;
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S32 count;
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// Kill all of the groups (and particles)
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count = (S32) mViewerPartGroups.size();
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for (i = 0; i < count; i++)
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{
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delete mViewerPartGroups[i];
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}
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mViewerPartGroups.clear();
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// Kill all of the sources
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mViewerPartSources.clear();
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}
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BOOL LLViewerPartSim::shouldAddPart()
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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if (sParticleCount > 0.75f*sMaxParticleCount)
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{
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F32 frac = (F32)sParticleCount/(F32)sMaxParticleCount;
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frac -= 0.75;
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frac *= 3.f;
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if (ll_frand() < frac)
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{
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// Skip...
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return FALSE;
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}
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}
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if (sParticleCount >= MAX_PART_COUNT)
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{
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return FALSE;
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}
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return TRUE;
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}
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void LLViewerPartSim::addPart(LLViewerPart* part)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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if (sParticleCount < MAX_PART_COUNT)
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{
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put(part);
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}
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}
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LLViewerPartGroup *LLViewerPartSim::put(LLViewerPart* part)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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const F32 MAX_MAG = 1000000.f*1000000.f; // 1 million
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if (part->mPosAgent.magVecSquared() > MAX_MAG || !part->mPosAgent.isFinite())
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{
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#if 0 && !LL_RELEASE_FOR_DOWNLOAD
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llwarns << "LLViewerPartSim::put Part out of range!" << llendl;
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llwarns << part->mPosAgent << llendl;
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#endif
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return NULL;
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}
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F32 desired_size = calc_desired_size(part->mPosAgent, part->mScale);
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S32 count = (S32) mViewerPartGroups.size();
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for (S32 i = 0; i < count; i++)
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{
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if (mViewerPartGroups[i]->addPart(part, desired_size))
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{
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// We found a spatial group that we fit into, add us and exit
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return mViewerPartGroups[i];
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}
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}
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// Hmm, we didn't fit in any of the existing spatial groups
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// Create a new one...
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llassert_always(part->mPosAgent.isFinite());
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LLViewerPartGroup *groupp = createViewerPartGroup(part->mPosAgent, desired_size);
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groupp->mUniformParticles = (part->mScale.mV[0] == part->mScale.mV[1] &&
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!(part->mFlags & LLPartData::LL_PART_FOLLOW_VELOCITY_MASK));
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if (!groupp->addPart(part))
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{
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llwarns << "LLViewerPartSim::put - Particle didn't go into its box!" << llendl;
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llinfos << groupp->getCenterAgent() << llendl;
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llinfos << part->mPosAgent << llendl;
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delete groupp;
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return NULL;
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}
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return groupp;
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}
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LLViewerPartGroup *LLViewerPartSim::createViewerPartGroup(const LLVector3 &pos_agent, const F32 desired_size)
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{
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LLMemType mt(LLMemType::MTYPE_PARTICLES);
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//find a box that has a center position divisible by PART_SIM_BOX_SIDE that encompasses
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//pos_agent
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LLViewerPartGroup *groupp = new LLViewerPartGroup(pos_agent, desired_size);
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mViewerPartGroups.push_back(groupp);
|
|
return groupp;
|
|
}
|
|
|
|
|
|
void LLViewerPartSim::shift(const LLVector3 &offset)
|
|
{
|
|
S32 i;
|
|
S32 count;
|
|
|
|
count = (S32) mViewerPartSources.size();
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
mViewerPartSources[i]->mPosAgent += offset;
|
|
mViewerPartSources[i]->mTargetPosAgent += offset;
|
|
mViewerPartSources[i]->mLastUpdatePosAgent += offset;
|
|
}
|
|
|
|
count = (S32) mViewerPartGroups.size();
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
mViewerPartGroups[i]->shift(offset);
|
|
}
|
|
}
|
|
|
|
S32 dist_rate_func(F32 distance)
|
|
{
|
|
//S32 dist = (S32) sqrtf(distance);
|
|
//dist /= 2;
|
|
//return llmax(dist,1);
|
|
return 1;
|
|
}
|
|
|
|
void LLViewerPartSim::updateSimulation()
|
|
{
|
|
LLMemType mt(LLMemType::MTYPE_PARTICLES);
|
|
|
|
static LLFrameTimer update_timer;
|
|
|
|
const F32 dt = update_timer.getElapsedTimeAndResetF32();
|
|
|
|
if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_PARTICLES)))
|
|
{
|
|
return;
|
|
}
|
|
|
|
LLFastTimer ftm(LLFastTimer::FTM_SIMULATE_PARTICLES);
|
|
|
|
// Start at a random particle system so the same
|
|
// particle system doesn't always get first pick at the
|
|
// particles. Theoretically we'd want to do this in distance
|
|
// order or something, but sorting particle sources will be a big
|
|
// pain.
|
|
S32 i;
|
|
S32 count = (S32) mViewerPartSources.size();
|
|
S32 start = (S32)ll_frand((F32)count);
|
|
S32 dir = 1;
|
|
if (ll_frand() > 0.5f)
|
|
{
|
|
dir = -1;
|
|
}
|
|
|
|
S32 num_updates = 0;
|
|
for (i = start; num_updates < count;)
|
|
{
|
|
if (i >= count)
|
|
{
|
|
i = 0;
|
|
}
|
|
if (i < 0)
|
|
{
|
|
i = count - 1;
|
|
}
|
|
|
|
if (!mViewerPartSources[i]->isDead())
|
|
{
|
|
LLViewerObject* source_object = mViewerPartSources[i]->mSourceObjectp;
|
|
if (source_object && source_object->mDrawable.notNull())
|
|
{
|
|
S32 dist = dist_rate_func(source_object->mDrawable->mDistanceWRTCamera);
|
|
if ((LLDrawable::getCurrentFrame()+mViewerPartSources[i]->mID)%dist == 0)
|
|
{
|
|
mViewerPartSources[i]->update(dt*dist);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mViewerPartSources[i]->update(dt);
|
|
}
|
|
}
|
|
|
|
if (mViewerPartSources[i]->isDead())
|
|
{
|
|
mViewerPartSources.erase(mViewerPartSources.begin() + i);
|
|
count--;
|
|
}
|
|
else
|
|
{
|
|
i += dir;
|
|
}
|
|
num_updates++;
|
|
}
|
|
|
|
|
|
count = (S32) mViewerPartGroups.size();
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
LLViewerObject* vobj = mViewerPartGroups[i]->mVOPartGroupp;
|
|
|
|
S32 dist = vobj && !vobj->mDrawable->isState(LLDrawable::IN_REBUILD_Q1) ?
|
|
dist_rate_func(vobj->mDrawable->mDistanceWRTCamera) : 1;
|
|
if (vobj)
|
|
{
|
|
LLSpatialGroup* group = vobj->mDrawable->getSpatialGroup();
|
|
if (group && !group->isVisible()) // && !group->isState(LLSpatialGroup::OBJECT_DIRTY))
|
|
{
|
|
dist *= 8;
|
|
}
|
|
}
|
|
|
|
if ((LLDrawable::getCurrentFrame()+mViewerPartGroups[i]->mID)%dist == 0)
|
|
{
|
|
if (vobj)
|
|
{
|
|
gPipeline.markRebuild(vobj->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
|
|
}
|
|
mViewerPartGroups[i]->updateParticles(dt*dist);
|
|
if (!mViewerPartGroups[i]->getCount())
|
|
{
|
|
delete mViewerPartGroups[i];
|
|
mViewerPartGroups.erase(mViewerPartGroups.begin() + i);
|
|
i--;
|
|
count--;
|
|
}
|
|
}
|
|
}
|
|
//llinfos << "Particles: " << sParticleCount << llendl;
|
|
}
|
|
|
|
|
|
void LLViewerPartSim::addPartSource(LLViewerPartSource *sourcep)
|
|
{
|
|
LLMemType mt(LLMemType::MTYPE_PARTICLES);
|
|
if (!sourcep)
|
|
{
|
|
llwarns << "Null part source!" << llendl;
|
|
return;
|
|
}
|
|
mViewerPartSources.push_back(sourcep);
|
|
}
|
|
|
|
|
|
void LLViewerPartSim::cleanupRegion(LLViewerRegion *regionp)
|
|
{
|
|
LLMemType mt(LLMemType::MTYPE_PARTICLES);
|
|
for (group_list_t::iterator i = mViewerPartGroups.begin(); i != mViewerPartGroups.end(); )
|
|
{
|
|
group_list_t::iterator iter = i++;
|
|
|
|
if ((*iter)->getRegion() == regionp)
|
|
{
|
|
delete *iter;
|
|
i = mViewerPartGroups.erase(iter);
|
|
}
|
|
}
|
|
}
|
|
|
|
void LLViewerPartSim::cleanMutedParticles(const LLUUID& task_id)
|
|
{
|
|
LLMemType mt(LLMemType::MTYPE_PARTICLES);
|
|
for (source_list_t::iterator i = mViewerPartSources.begin(); i != mViewerPartSources.end(); )
|
|
{
|
|
source_list_t::iterator iter = i++;
|
|
|
|
if ((*iter)->getOwnerUUID() == task_id)
|
|
{
|
|
i = mViewerPartSources.erase(iter);
|
|
}
|
|
}
|
|
}
|