llpartdata.cpp

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#include "linden_common.h"

#include "llpartdata.h"
#include "message.h"

#include "lldatapacker.h"
#include "v4coloru.h"

#include "llsdutil.h"


const S32 PS_PART_DATA_BLOCK_SIZE = 4 + 2 + 4 + 4 + 2 + 2; // 18
const S32 PS_DATA_BLOCK_SIZE = 68 + PS_PART_DATA_BLOCK_SIZE; // 68 + 18 = 86


const F32 MAX_PART_SCALE = 4.f;

BOOL LLPartData::pack(LLDataPacker &dp)
{
        LLColor4U coloru;
        dp.packU32(mFlags, "pdflags");
        dp.packFixed(mMaxAge, "pdmaxage", FALSE, 8, 8);
        coloru.setVec(mStartColor);
        dp.packColor4U(coloru, "pdstartcolor");
        coloru.setVec(mEndColor);
        dp.packColor4U(coloru, "pdendcolor");
        dp.packFixed(mStartScale.mV[0], "pdstartscalex", FALSE, 3, 5);
        dp.packFixed(mStartScale.mV[1], "pdstartscaley", FALSE, 3, 5);
        dp.packFixed(mEndScale.mV[0], "pdendscalex", FALSE, 3, 5);
        dp.packFixed(mEndScale.mV[1], "pdendscaley", FALSE, 3, 5);
        return TRUE;
}

LLSD LLPartData::asLLSD() const
{
        LLSD sd = LLSD();
        sd["pdflags"] = ll_sd_from_U32(mFlags);
        sd["pdmaxage"] = mMaxAge;
        sd["pdstartcolor"] = ll_sd_from_color4(mStartColor);
        sd["pdendcolor"] = ll_sd_from_color4(mEndColor);
        sd["pdstartscale"] = ll_sd_from_vector2(mStartScale);
        sd["pdendscale"] = ll_sd_from_vector2(mEndScale);
        return sd;
}

bool LLPartData::fromLLSD(LLSD& sd)
{
        mFlags = ll_U32_from_sd(sd["pdflags"]);
        mMaxAge = (F32)sd["pdmaxage"].asReal();
        mStartColor = ll_color4_from_sd(sd["pdstartcolor"]);
        mEndColor = ll_color4_from_sd(sd["pdendcolor"]);
        mStartScale = ll_vector2_from_sd(sd["pdstartscale"]);
        mEndScale = ll_vector2_from_sd(sd["pdendscale"]);
        return true;
}


BOOL LLPartData::unpack(LLDataPacker &dp)
{
        LLColor4U coloru;

        dp.unpackU32(mFlags, "pdflags");
        dp.unpackFixed(mMaxAge, "pdmaxage", FALSE, 8, 8);

        dp.unpackColor4U(coloru, "pdstartcolor");
        mStartColor.setVec(coloru);
        dp.unpackColor4U(coloru, "pdendcolor");
        mEndColor.setVec(coloru);
        dp.unpackFixed(mStartScale.mV[0], "pdstartscalex", FALSE, 3, 5);
        dp.unpackFixed(mStartScale.mV[1], "pdstartscaley", FALSE, 3, 5);
        dp.unpackFixed(mEndScale.mV[0], "pdendscalex", FALSE, 3, 5);
        dp.unpackFixed(mEndScale.mV[1], "pdendscaley", FALSE, 3, 5);
        return TRUE;
}


void LLPartData::setFlags(const U32 flags)
{
        mFlags = flags;
}


void LLPartData::setMaxAge(const F32 max_age)
{
        mMaxAge = llclamp(max_age, 0.f, 30.f);
}


void LLPartData::setStartScale(const F32 xs, const F32 ys)
{
        mStartScale.mV[VX] = llmin(xs, MAX_PART_SCALE);
        mStartScale.mV[VY] = llmin(ys, MAX_PART_SCALE);
}


void LLPartData::setEndScale(const F32 xs, const F32 ys)
{
        mEndScale.mV[VX] = llmin(xs, MAX_PART_SCALE);
        mEndScale.mV[VY] = llmin(ys, MAX_PART_SCALE);
}


void LLPartData::setStartColor(const LLVector3 &rgb)
{
        mStartColor.setVec(rgb.mV[0], rgb.mV[1], rgb.mV[2]);
}


void LLPartData::setEndColor(const LLVector3 &rgb)
{
        mEndColor.setVec(rgb.mV[0], rgb.mV[1], rgb.mV[2]);
}

void LLPartData::setStartAlpha(const F32 alpha)
{
        mStartColor.mV[3] = alpha;
}
void LLPartData::setEndAlpha(const F32 alpha)
{
        mEndColor.mV[3] = alpha;
}


LLPartSysData::LLPartSysData()
{
        mCRC = 0;
        mFlags = 0;

        mPartData.mFlags = 0;
        mPartData.mStartColor = LLColor4(1.f, 1.f, 1.f, 1.f);
        mPartData.mEndColor = LLColor4(1.f, 1.f, 1.f, 1.f);
        mPartData.mStartScale = LLVector2(1.f, 1.f);
        mPartData.mEndScale = LLVector2(1.f, 1.f);
        mPartData.mMaxAge = 10.0;

        mMaxAge = 0.0;
        mStartAge = 0.0;
        mPattern = LL_PART_SRC_PATTERN_DROP;                    // Pattern for particle velocity
        mInnerAngle = 0.0;                                                              // Inner angle of PATTERN_ANGLE_*
        mOuterAngle = 0.0;                                                              // Outer angle of PATTERN_ANGLE_*
        mBurstRate = 0.1f;                                                              // How often to do a burst of particles
        mBurstPartCount = 1;                                                    // How many particles in a burst
        mBurstSpeedMin = 1.f;                                           // Minimum particle velocity
        mBurstSpeedMax = 1.f;                                           // Maximum particle velocity
        mBurstRadius = 0.f;

        mNumParticles = 0;
}


BOOL LLPartSysData::pack(LLDataPacker &dp)
{
        dp.packU32(mCRC, "pscrc");
        dp.packU32(mFlags, "psflags");
        dp.packU8(mPattern, "pspattern");
        dp.packFixed(mMaxAge, "psmaxage", FALSE, 8, 8);
        dp.packFixed(mStartAge, "psstartage", FALSE, 8, 8);
        dp.packFixed(mInnerAngle, "psinnerangle", FALSE, 3, 5);
        dp.packFixed(mOuterAngle, "psouterangle", FALSE, 3, 5);
        dp.packFixed(mBurstRate, "psburstrate", FALSE, 8, 8);
        dp.packFixed(mBurstRadius, "psburstradius", FALSE, 8, 8);
        dp.packFixed(mBurstSpeedMin, "psburstspeedmin", FALSE, 8, 8);
        dp.packFixed(mBurstSpeedMax, "psburstspeedmax", FALSE, 8, 8);
        dp.packU8(mBurstPartCount, "psburstpartcount");

        dp.packFixed(mAngularVelocity.mV[0], "psangvelx", TRUE, 8, 7);
        dp.packFixed(mAngularVelocity.mV[1], "psangvely", TRUE, 8, 7);
        dp.packFixed(mAngularVelocity.mV[2], "psangvelz", TRUE, 8, 7);

        dp.packFixed(mPartAccel.mV[0], "psaccelx", TRUE, 8, 7);
        dp.packFixed(mPartAccel.mV[1], "psaccely", TRUE, 8, 7);
        dp.packFixed(mPartAccel.mV[2], "psaccelz", TRUE, 8, 7);

        dp.packUUID(mPartImageID, "psuuid");
        dp.packUUID(mTargetUUID, "pstargetuuid");
        mPartData.pack(dp);
        return TRUE;
}


BOOL LLPartSysData::unpack(LLDataPacker &dp)
{
        dp.unpackU32(mCRC, "pscrc");
        dp.unpackU32(mFlags, "psflags");
        dp.unpackU8(mPattern, "pspattern");
        dp.unpackFixed(mMaxAge, "psmaxage", FALSE, 8, 8);
        dp.unpackFixed(mStartAge, "psstartage", FALSE, 8, 8);
        dp.unpackFixed(mInnerAngle, "psinnerangle", FALSE, 3, 5);
        dp.unpackFixed(mOuterAngle, "psouterangle", FALSE, 3, 5);
        dp.unpackFixed(mBurstRate, "psburstrate", FALSE, 8, 8);
        mBurstRate = llmax(0.01f, mBurstRate);
        dp.unpackFixed(mBurstRadius, "psburstradius", FALSE, 8, 8);
        dp.unpackFixed(mBurstSpeedMin, "psburstspeedmin", FALSE, 8, 8);
        dp.unpackFixed(mBurstSpeedMax, "psburstspeedmax", FALSE, 8, 8);
        dp.unpackU8(mBurstPartCount, "psburstpartcount");

        dp.unpackFixed(mAngularVelocity.mV[0], "psangvelx", TRUE, 8, 7);
        dp.unpackFixed(mAngularVelocity.mV[1], "psangvely", TRUE, 8, 7);
        dp.unpackFixed(mAngularVelocity.mV[2], "psangvelz", TRUE, 8, 7);

        dp.unpackFixed(mPartAccel.mV[0], "psaccelx", TRUE, 8, 7);
        dp.unpackFixed(mPartAccel.mV[1], "psaccely", TRUE, 8, 7);
        dp.unpackFixed(mPartAccel.mV[2], "psaccelz", TRUE, 8, 7);

        dp.unpackUUID(mPartImageID, "psuuid");
        dp.unpackUUID(mTargetUUID, "pstargetuuid");
        mPartData.unpack(dp);
        return TRUE;
}

std::ostream& operator<<(std::ostream& s, const LLPartSysData &data)
{
        s << "Flags: " << std::hex << data.mFlags;
        s << " Pattern: " << std::hex << (U32) data.mPattern << "\n";
        s << "Age: [" << data.mStartAge << ", " << data.mMaxAge << "]\n";
        s << "Angle: [" << data.mInnerAngle << ", " << data.mOuterAngle << "]\n";
        s << "Burst Rate: " << data.mBurstRate << "\n";
        s << "Burst Radius: " << data.mBurstRadius << "\n";
        s << "Burst Speed: [" << data.mBurstSpeedMin << ", " << data.mBurstSpeedMax << "]\n";
        s << "Burst Part Count: " << std::hex << (U32) data.mBurstPartCount << "\n";
        s << "Angular Velocity: " << data.mAngularVelocity << "\n";
        s << "Accel: " << data.mPartAccel;
        return s;
}

BOOL LLPartSysData::isNullPS(const S32 block_num)
{
        U8 ps_data_block[PS_DATA_BLOCK_SIZE];
        U32 crc;

        S32 size;
        // Check size of block
        size = gMessageSystem->getSize("ObjectData", block_num, "PSBlock");
        
        if (!size)
        {
                return TRUE;
        }
        else if (size != PS_DATA_BLOCK_SIZE)
        {
                llwarns << "PSBlock is wrong size for particle system data - got " << size << ", expecting " << PS_DATA_BLOCK_SIZE << llendl;
                return TRUE;
        }
        gMessageSystem->getBinaryData("ObjectData", "PSBlock", ps_data_block, PS_DATA_BLOCK_SIZE, block_num, PS_DATA_BLOCK_SIZE);

        LLDataPackerBinaryBuffer dp(ps_data_block, PS_DATA_BLOCK_SIZE);
        dp.unpackU32(crc, "crc");

        if (crc == 0)
        {
                return TRUE;
        }
        return FALSE;
}


//static
BOOL LLPartSysData::packNull()
{
        U8 ps_data_block[PS_DATA_BLOCK_SIZE];
        gMessageSystem->addBinaryData("PSBlock", ps_data_block, 0);
        return TRUE;
}


BOOL LLPartSysData::packBlock()
{
        U8 ps_data_block[PS_DATA_BLOCK_SIZE];

        LLDataPackerBinaryBuffer dp(ps_data_block, PS_DATA_BLOCK_SIZE);
        pack(dp);

        // Add to message
        gMessageSystem->addBinaryData("PSBlock", ps_data_block, PS_DATA_BLOCK_SIZE);

        return TRUE;
}                                         


BOOL LLPartSysData::unpackBlock(const S32 block_num)
{
        U8 ps_data_block[PS_DATA_BLOCK_SIZE];

        // Check size of block
        S32 size = gMessageSystem->getSize("ObjectData", block_num, "PSBlock");

        if (size != PS_DATA_BLOCK_SIZE)
        {
                llwarns << "PSBlock is wrong size for particle system data - got " << size << ", expecting " << PS_DATA_BLOCK_SIZE << llendl;
                return FALSE;
        }

        // Get from message
        gMessageSystem->getBinaryData("ObjectData", "PSBlock", ps_data_block, PS_DATA_BLOCK_SIZE, block_num, PS_DATA_BLOCK_SIZE);

        LLDataPackerBinaryBuffer dp(ps_data_block, PS_DATA_BLOCK_SIZE);
        unpack(dp);

        return TRUE;
}

void LLPartSysData::clampSourceParticleRate()
{
        F32 particle_rate = 0;
        particle_rate = mBurstPartCount/mBurstRate;
        if (particle_rate > 256.f)
        {
                mBurstPartCount = llfloor(((F32)mBurstPartCount)*(256.f/particle_rate));
        }
}

void LLPartSysData::setPartAccel(const LLVector3 &accel)
{
        mPartAccel.mV[VX] = llclamp(accel.mV[VX], -100.f, 100.f);
        mPartAccel.mV[VY] = llclamp(accel.mV[VY], -100.f, 100.f);
        mPartAccel.mV[VZ] = llclamp(accel.mV[VZ], -100.f, 100.f);
}

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