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Tofu Linden authored
Checker: UNINIT_CTOR Function: LLPartSysCompressedPacket::LLPartSysCompressedPacket() File: /indra/llmessage/partsyspacket.cpp
Tofu Linden authoredChecker: UNINIT_CTOR Function: LLPartSysCompressedPacket::LLPartSysCompressedPacket() File: /indra/llmessage/partsyspacket.cpp
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partsyspacket.cpp 30.89 KiB
/**
* @file partsyspacket.cpp
* @brief Object for packing particle system initialization parameters
* before sending them over the network.
*
* $LicenseInfo:firstyear=2000&license=viewergpl$
*
* Copyright (c) 2000-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "partsyspacket.h"
#include "imageids.h"
// this function is global
void gSetInitDataDefaults(LLPartInitData *setMe)
{
U32 i;
//for(i = 0; i < 18; i++)
//{
// setMe->k[i] = 0.0f;
//}
//setMe->kill_p[0] = setMe->kill_p[1] = setMe->kill_p[2] = 0.0f;
//setMe->kill_p[3] = -0.2f; // time parameter, die when t= 5.0f
//setMe->kill_p[4] = 1.0f;
//setMe->kill_p[5] = -0.5f; // or radius == 2 (contracting)
//setMe->bounce_p[0] = setMe->bounce_p[1] =
// setMe->bounce_p[2] = setMe->bounce_p[3] = 0.0f;
//setMe->bounce_p[4] = 1.0f;
setMe->bounce_b = 1.0f;
// i just changed the meaning of bounce_b
// its now the attenuation from revlecting your velocity across the normal
// set by bounce_p
//setMe->pos_ranges[0] = setMe->pos_ranges[2] = setMe->pos_ranges[4] = -1.0f;
//setMe->pos_ranges[1] = setMe->pos_ranges[3] = setMe->pos_ranges[5] = 1.0f;
//setMe->vel_ranges[0] = setMe->vel_ranges[2] = setMe->vel_ranges[4] = -1.0f;
//setMe->vel_ranges[1] = setMe->vel_ranges[3] = setMe->vel_ranges[5] = 1.0f;
for(i = 0; i < 3; i++)
{ setMe->diffEqAlpha[i] = 0.0f;
setMe->diffEqScale[i] = 0.0f;
}
setMe->scale_range[0] = 1.00f;
setMe->scale_range[1] = 5.00f;
setMe->scale_range[2] = setMe->scale_range[3] = 0.0f;
setMe->alpha_range[0] = setMe->alpha_range[1] = 1.0f;
setMe->alpha_range[2] = setMe->alpha_range[3] = 0.0f;
setMe->vel_offset[0] = 0.0f;
setMe->vel_offset[1] = 0.0f;
setMe->vel_offset[2] = 0.0f;
// start dropping particles when I'm more then one sim away
setMe->mDistBeginFadeout = 256.0f;
setMe->mDistEndFadeout = 1.414f * 512.0f;
// stop displaying particles when I'm more then two sim diagonals away
setMe->mImageUuid = IMG_SHOT;
for(i = 0; i < 8; i++)
{
setMe->mFlags[i] = 0x00;
}
setMe->createMe = TRUE;
setMe->maxParticles = 25;
setMe->initialParticles = 25;
//These defaults are for an explosion - a short lived set of debris affected by gravity.
//Action flags default to PART_SYS_AFFECTED_BY_WIND + PART_SYS_AFFECTED_BY_GRAVITY + PART_SYS_DISTANCE_DEATH
setMe->mFlags[PART_SYS_ACTION_BYTE] = PART_SYS_AFFECTED_BY_WIND | PART_SYS_AFFECTED_BY_GRAVITY | PART_SYS_DISTANCE_DEATH;
setMe->mFlags[PART_SYS_KILL_BYTE] = PART_SYS_DISTANCE_DEATH + PART_SYS_TIME_DEATH;
setMe->killPlaneNormal[0] = 0.0f;setMe->killPlaneNormal[1] = 0.0f;setMe->killPlaneNormal[2] = 1.0f; //Straight up
setMe->killPlaneZ = 0.0f; //get local ground z as an approximation if turn on PART_SYS_KILL_PLANE
setMe->bouncePlaneNormal[0] = 0.0f;setMe->bouncePlaneNormal[1] = 0.0f;setMe->bouncePlaneNormal[2] = 1.0f; //Straight up
setMe->bouncePlaneZ = 0.0f; //get local ground z as an approximation if turn on PART_SYS_BOUNCE
setMe->spawnRange = 1.0f;
setMe->spawnFrequency = 0.0f; //Create the instant one dies
setMe->spawnFreqencyRange = 0.0f;
setMe->spawnDirection[0] = 0.0f;setMe->spawnDirection[1] = 0.0f;setMe->spawnDirection[2] = 1.0f; //Straight up
setMe->spawnDirectionRange = 1.0f; //global scattering
setMe->spawnVelocity = 0.75f;
setMe->spawnVelocityRange = 0.25f; //velocity +/- 0.25
setMe->speedLimit = 1.0f;
setMe->windWeight = 0.5f; //0.0f means looks like a heavy object (if gravity is on), 1.0f means light and fluffy
setMe->currentGravity[0] = 0.0f;setMe->currentGravity[1] = 0.0f;setMe->currentGravity[2] = -9.81f;
//This has to be constant to allow for compression
setMe->gravityWeight = 0.5f; //0.0f means boyed by air, 1.0f means it's a lead weight
setMe->globalLifetime = 0.0f; //Arbitrary, but default is no global die, so doesn't matter
setMe->individualLifetime = 5.0f;
setMe->individualLifetimeRange = 1.0f; //Particles last 5 secs +/- 1
setMe->alphaDecay = 1.0f; //normal alpha fadeout
setMe->scaleDecay = 0.0f; //no scale decay
setMe->distanceDeath = 10.0f; //die if hit unit radius
setMe->dampMotionFactor = 0.0f;
setMe->windDiffusionFactor[0] = 0.0f;
setMe->windDiffusionFactor[1] = 0.0f;
setMe->windDiffusionFactor[2] = 0.0f;
}
LLPartSysCompressedPacket::LLPartSysCompressedPacket()
{ // default constructor for mDefaults called implicitly/automatically here
for(int i = 0; i < MAX_PART_SYS_PACKET_SIZE; i++)
{
mData[i] = '\0';
}
mNumBytes = 0;
gSetInitDataDefaults(&mDefaults);
}
LLPartSysCompressedPacket::~LLPartSysCompressedPacket()
{
// no dynamic data is stored by this class, do nothing.
}
void LLPartSysCompressedPacket::writeFlagByte(LLPartInitData *in)
{
mData[0] = mData[1] = mData[2] = '\0';
U32 i;
//for(i = 1; i < 18; i++) {
// if(in->k[i] != mDefaults.k[i])
// {
// mData[0] |= PART_SYS_K_MASK;
// break;
// }
//}
if(in->killPlaneZ != mDefaults.killPlaneZ ||
in->killPlaneNormal[0] != mDefaults.killPlaneNormal[0] ||
in->killPlaneNormal[1] != mDefaults.killPlaneNormal[1] ||
in->killPlaneNormal[2] != mDefaults.killPlaneNormal[2] ||
in->distanceDeath != mDefaults.distanceDeath)
{
mData[0] |= PART_SYS_KILL_P_MASK;
}
if(in->bouncePlaneZ != mDefaults.bouncePlaneZ ||
in->bouncePlaneNormal[0] != mDefaults.bouncePlaneNormal[0] ||
in->bouncePlaneNormal[1] != mDefaults.bouncePlaneNormal[1] ||
in->bouncePlaneNormal[2] != mDefaults.bouncePlaneNormal[2])
{
mData[0] |= PART_SYS_BOUNCE_P_MASK;
}
if(in->bounce_b != mDefaults.bounce_b)
{
mData[0] |= PART_SYS_BOUNCE_B_MASK;
}
//if(in->pos_ranges[0] != mDefaults.pos_ranges[0] || in->pos_ranges[1] != mDefaults.pos_ranges[1] ||
// in->pos_ranges[2] != mDefaults.pos_ranges[2] || in->pos_ranges[3] != mDefaults.pos_ranges[3] ||
// in->pos_ranges[4] != mDefaults.pos_ranges[4] || in->pos_ranges[5] != mDefaults.pos_ranges[5])
//{
// mData[0] |= PART_SYS_POS_RANGES_MASK;
//}
//if(in->vel_ranges[0] != mDefaults.vel_ranges[0] || in->vel_ranges[1] != mDefaults.vel_ranges[1] ||
// in->vel_ranges[2] != mDefaults.vel_ranges[2] || in->vel_ranges[3] != mDefaults.vel_ranges[3] ||
// in->vel_ranges[4] != mDefaults.vel_ranges[4] || in->vel_ranges[5] != mDefaults.vel_ranges[5])
//{
// mData[0] |= PART_SYS_VEL_RANGES_MASK;
//}
if(in->diffEqAlpha[0] != mDefaults.diffEqAlpha[0] || in->diffEqAlpha[1] != mDefaults.diffEqAlpha[1] ||
in->diffEqAlpha[2] != mDefaults.diffEqAlpha[2] ||
in->diffEqScale[0] != mDefaults.diffEqScale[0] ||
in->diffEqScale[1] != mDefaults.diffEqScale[1] ||
in->diffEqScale[2] != mDefaults.diffEqScale[2])
{
mData[0] |= PART_SYS_ALPHA_SCALE_DIFF_MASK;
}
if(in->scale_range[0] != mDefaults.scale_range[0] ||
in->scale_range[1] != mDefaults.scale_range[1] ||
in->scale_range[2] != mDefaults.scale_range[2] ||
in->scale_range[3] != mDefaults.scale_range[3])
{
mData[0] |= PART_SYS_SCALE_RANGE_MASK;
}
if(in->alpha_range[0] != mDefaults.alpha_range[0] ||
in->alpha_range[1] != mDefaults.alpha_range[1] ||
in->alpha_range[2] != mDefaults.alpha_range[2] ||
in->alpha_range[3] != mDefaults.alpha_range[3])
{
mData[2] |= PART_SYS_BYTE_3_ALPHA_MASK;
}
if(in->vel_offset[0] != mDefaults.vel_offset[0] ||
in->vel_offset[1] != mDefaults.vel_offset[1] ||
in->vel_offset[2] != mDefaults.vel_offset[2])
{
mData[0] |= PART_SYS_VEL_OFFSET_MASK;
}
if(in->mImageUuid != mDefaults.mImageUuid)
{
mData[0] |= PART_SYS_M_IMAGE_UUID_MASK;
}
for( i = 0; i < 8; i++)
{
if(in->mFlags[i])
{
mData[1] |= 1<<i;
// llprintline("Flag \"%x\" gets byte \"%x\"\n", i<<i, in->mFlags[i]);
}
}
if(in->spawnRange != mDefaults.spawnRange ||
in->spawnFrequency != mDefaults.spawnFrequency ||
in->spawnFreqencyRange != mDefaults.spawnFreqencyRange ||
in->spawnDirection[0] != mDefaults.spawnDirection[0] ||
in->spawnDirection[1] != mDefaults.spawnDirection[1] ||
in->spawnDirection[2] != mDefaults.spawnDirection[2] ||
in->spawnDirectionRange != mDefaults.spawnDirectionRange ||
in->spawnVelocity != mDefaults.spawnVelocity ||
in->spawnVelocityRange != mDefaults.spawnVelocityRange)
{
mData[3] |= PART_SYS_BYTE_SPAWN_MASK;
}
if(in->windWeight != mDefaults.windWeight ||
in->currentGravity[0] != mDefaults.currentGravity[0] ||
in->currentGravity[1] != mDefaults.currentGravity[1] ||
in->currentGravity[2] != mDefaults.currentGravity[2] ||
in->gravityWeight != mDefaults.gravityWeight)
{ mData[3] |= PART_SYS_BYTE_ENVIRONMENT_MASK;
}
if(in->globalLifetime != mDefaults.globalLifetime ||
in->individualLifetime != mDefaults.individualLifetime ||
in->individualLifetimeRange != mDefaults.individualLifetimeRange)
{
mData[3] |= PART_SYS_BYTE_LIFESPAN_MASK;
}
if(in->speedLimit != mDefaults.speedLimit ||
in->alphaDecay != mDefaults.alphaDecay ||
in->scaleDecay != mDefaults.scaleDecay ||
in->dampMotionFactor != mDefaults.dampMotionFactor)
{
mData[3] |= PART_SYS_BYTE_DECAY_DAMP_MASK;
}
if(in->windDiffusionFactor[0] != mDefaults.windDiffusionFactor[0] ||
in->windDiffusionFactor[1] != mDefaults.windDiffusionFactor[1] ||
in->windDiffusionFactor[2] != mDefaults.windDiffusionFactor[2])
{
mData[3] |= PART_SYS_BYTE_WIND_DIFF_MASK;
}
}
F32 floatFromTwoBytes(S8 bMant, S8 bExp)
{
F32 result = bMant;
while(bExp > 0)
{
result *= 2.0f;
bExp--;
}
while(bExp < 0)
{
result *= 0.5f;
bExp++;
}
return result;
}
void twoBytesFromFloat(F32 fIn, S8 &bMant, S8 &bExp)
{
bExp = 0;
if(fIn > 127.0f)
{
fIn = 127.0f;
}
if(fIn < -127.0f)
{
fIn = -127.0f;
}
while(fIn < 64 && fIn > -64 && bExp > -127)
{
fIn *= 2.0f;
bExp--;
}
while((fIn > 128 || fIn < -128) && bExp < 127)
{
fIn *= 0.5f;
bExp++;
}
bMant = (S8)fIn;
}
/*
U32 LLPartSysCompressedPacket::writeK(LLPartInitData *in, U32 startByte)
{
U32 i, kFlag, i_mod_eight;
S8 bMant, bExp;
kFlag = startByte;
startByte += 3; // 3 bytes contain enough room for 18 flag bits
mData[kFlag] = 0x00;
// llprintline("In the writeK\n");
i_mod_eight = 0;
for(i = 0; i < 18; i++)
{
if(in->k[i] != mDefaults.k[i])
{
mData[kFlag] |= 1<<i_mod_eight;
twoBytesFromFloat(in->k[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
i_mod_eight++;
while(i_mod_eight >= 8)
{
kFlag++;
i_mod_eight -= 8;
}
}
return startByte;
}*/
U32 LLPartSysCompressedPacket::writeKill_p(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
twoBytesFromFloat(in->killPlaneNormal[0], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->killPlaneNormal[1], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->killPlaneNormal[2], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->killPlaneZ, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->distanceDeath, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeBounce_p(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
twoBytesFromFloat(in->bouncePlaneNormal[0], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->bouncePlaneNormal[1], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->bouncePlaneNormal[2], bMant, bExp); mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->bouncePlaneZ, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeBounce_b(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
twoBytesFromFloat(in->bounce_b, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
//U32 LLPartSysCompressedPacket::writePos_ranges(LLPartInitData *in, U32 startByte)
//{
// S8 tmp;
// int i;
// for(i = 0; i < 6; i++)
// {
// tmp = (S8) in->pos_ranges[i]; // float to int conversion (keep the sign)
// mData[startByte++] = (U8)tmp; // signed to unsigned typecast
// }
// return startByte;
//}
//U32 LLPartSysCompressedPacket::writeVel_ranges(LLPartInitData *in, U32 startByte)
//{
// S8 tmp;
// int i;
// for(i = 0; i < 6; i++)
// {
// tmp = (S8) in->vel_ranges[i]; // float to int conversion (keep the sign)
// mData[startByte++] = (U8)tmp; // signed to unsigned typecast
// }
// return startByte;
//}
U32 LLPartSysCompressedPacket::writeAlphaScaleDiffEqn_range(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
for(i = 0; i < 3; i++)
{
twoBytesFromFloat(in->diffEqAlpha[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
for(i = 0; i < 3; i++)
{
twoBytesFromFloat(in->diffEqScale[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
return startByte;
}
U32 LLPartSysCompressedPacket::writeScale_range(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
for(i = 0; i < 4; i++)
{
twoBytesFromFloat(in->scale_range[i], bMant, bExp); mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
return startByte;
}
U32 LLPartSysCompressedPacket::writeAlpha_range(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
for(i = 0; i < 4; i++)
{
twoBytesFromFloat(in->alpha_range[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
return startByte;
}
U32 LLPartSysCompressedPacket::writeVelocityOffset(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
for(i = 0; i < 3; i++)
{
twoBytesFromFloat(in->vel_offset[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
return startByte;
}
U32 LLPartSysCompressedPacket::writeUUID(LLPartInitData *in, U32 startByte)
{
U8 * bufPtr = mData + startByte;
if(in->mImageUuid == IMG_SHOT) {
mData[startByte++] = 0x01;
return startByte;
}
if(in->mImageUuid == IMG_SPARK) {
mData[startByte++] = 0x02;
return startByte;
}
if(in->mImageUuid == IMG_BIG_EXPLOSION_1) {
mData[startByte++] = 0x03;
return startByte;
}
if(in->mImageUuid == IMG_BIG_EXPLOSION_2) {
mData[startByte++] = 0x04;
return startByte;
}
if(in->mImageUuid == IMG_SMOKE_POOF) {
mData[startByte++] = 0x05;
return startByte;
}
if(in->mImageUuid == IMG_FIRE) {
mData[startByte++] = 0x06;
return startByte;
}
if(in->mImageUuid == IMG_EXPLOSION) { mData[startByte++] = 0x07;
return startByte;
}
if(in->mImageUuid == IMG_EXPLOSION_2) {
mData[startByte++] = 0x08;
return startByte;
}
if(in->mImageUuid == IMG_EXPLOSION_3) {
mData[startByte++] = 0x09;
return startByte;
}
if(in->mImageUuid == IMG_EXPLOSION_4) {
mData[startByte++] = 0x0A;
return startByte;
}
mData[startByte++] = 0x00; // flag for "read whole UUID"
memcpy(bufPtr, in->mImageUuid.mData, 16); /* Flawfinder: ignore */
return (startByte+16);
}
U32 LLPartSysCompressedPacket::writeSpawn(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
twoBytesFromFloat(in->spawnRange, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->spawnFrequency, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->spawnFreqencyRange, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
for(i = 0; i < 3; i++)
{
twoBytesFromFloat(in->spawnDirection[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
twoBytesFromFloat(in->spawnDirectionRange, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->spawnVelocity, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->spawnVelocityRange, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeEnvironment(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
int i;
twoBytesFromFloat(in->windWeight, bMant, bExp);
mData[startByte++] = bMant; mData[startByte++] = bExp;
for(i = 0; i < 3; i++)
{
twoBytesFromFloat(in->currentGravity[i], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
}
twoBytesFromFloat(in->gravityWeight, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeLifespan(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
twoBytesFromFloat(in->globalLifetime, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->individualLifetime, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->individualLifetimeRange, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeDecayDamp(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
twoBytesFromFloat(in->speedLimit, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->alphaDecay, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->scaleDecay, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->dampMotionFactor, bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
U32 LLPartSysCompressedPacket::writeWindDiffusionFactor(LLPartInitData *in, U32 startByte)
{
S8 bExp, bMant;
twoBytesFromFloat(in->windDiffusionFactor[0], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->windDiffusionFactor[1], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
twoBytesFromFloat(in->windDiffusionFactor[2], bMant, bExp);
mData[startByte++] = bMant;
mData[startByte++] = bExp;
return startByte;
}
/*
U32 LLPartSysCompressedPacket::readK(LLPartInitData *in, U32 startByte)
{
U32 i, i_mod_eight, kFlag;
S8 bMant, bExp; // 1 bytes mantissa and exponent for a float
kFlag = startByte;
startByte += 3; // 3 bytes has enough room for 18 bits
i_mod_eight = 0;
for(i = 0; i < 18; i++)
{
if(mData[kFlag]&(1<<i_mod_eight))
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->k[i] = floatFromTwoBytes(bMant, bExp); // much tighter platform-independent
// way to ship floats
}
i_mod_eight++;
if(i_mod_eight >= 8)
{
i_mod_eight -= 8;
kFlag++;
}
}
return startByte;
}
*/
U32 LLPartSysCompressedPacket::readKill_p(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->killPlaneNormal[0] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->killPlaneNormal[1] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->killPlaneNormal[2] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->killPlaneZ = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->distanceDeath = floatFromTwoBytes(bMant, bExp);
return startByte;}
U32 LLPartSysCompressedPacket::readBounce_p(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->bouncePlaneNormal[0] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->bouncePlaneNormal[1] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->bouncePlaneNormal[2] = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->bouncePlaneZ = floatFromTwoBytes(bMant, bExp);
return startByte;
}
U32 LLPartSysCompressedPacket::readBounce_b(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->bounce_b = floatFromTwoBytes(bMant, bExp);
return startByte;
}
//U32 LLPartSysCompressedPacket::readPos_ranges(LLPartInitData *in, U32 startByte)
//{
// S8 tmp;
// int i;
// for(i = 0; i < 6; i++)
// {
// tmp = (S8)mData[startByte++];
// in->pos_ranges[i] = tmp;
// }
// return startByte;
//}
//U32 LLPartSysCompressedPacket::readVel_ranges(LLPartInitData *in, U32 startByte)
//{
// S8 tmp;
// int i;
// for(i = 0; i < 6; i++)
// {
// tmp = (S8)mData[startByte++];
// in->vel_ranges[i] = tmp;
// }
// return startByte;
//}
U32 LLPartSysCompressedPacket::readAlphaScaleDiffEqn_range(LLPartInitData *in, U32 startByte)
{
int i;
S8 bMant, bExp;
for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->diffEqAlpha[i] = floatFromTwoBytes(bMant, bExp);
} for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->diffEqScale[i] = floatFromTwoBytes(bMant, bExp);
}
return startByte;
}
U32 LLPartSysCompressedPacket::readAlpha_range(LLPartInitData *in, U32 startByte)
{
int i;
S8 bMant, bExp;
for(i = 0; i < 4; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->alpha_range[i] = floatFromTwoBytes(bMant, bExp);
}
return startByte;
}
U32 LLPartSysCompressedPacket::readScale_range(LLPartInitData *in, U32 startByte)
{
int i;
S8 bMant, bExp;
for(i = 0; i < 4; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->scale_range[i] = floatFromTwoBytes(bMant, bExp);
}
return startByte;
}
U32 LLPartSysCompressedPacket::readVelocityOffset(LLPartInitData *in, U32 startByte)
{
int i;
S8 bMant, bExp;
for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->vel_offset[i] = floatFromTwoBytes(bMant, bExp);
}
return startByte;
}
U32 LLPartSysCompressedPacket::readUUID(LLPartInitData *in, U32 startByte)
{
U8 * bufPtr = mData + startByte;
if(mData[startByte] == 0x01)
{
in->mImageUuid = IMG_SHOT;
return startByte+1;
}
if(mData[startByte] == 0x02)
{
in->mImageUuid = IMG_SPARK;
return startByte+1;
}
if(mData[startByte] == 0x03)
{
in->mImageUuid = IMG_BIG_EXPLOSION_1;
return startByte+1;
}
if(mData[startByte] == 0x04)
{
in->mImageUuid = IMG_BIG_EXPLOSION_2; return startByte+1;
}
if(mData[startByte] == 0x05)
{
in->mImageUuid = IMG_SMOKE_POOF;
return startByte+1;
}
if(mData[startByte] == 0x06)
{
in->mImageUuid = IMG_FIRE;
return startByte+1;
}
if(mData[startByte] == 0x07)
{
in->mImageUuid = IMG_EXPLOSION;
return startByte+1;
}
if(mData[startByte] == 0x08)
{
in->mImageUuid = IMG_EXPLOSION_2;
return startByte+1;
}
if(mData[startByte] == 0x09)
{
in->mImageUuid = IMG_EXPLOSION_3;
return startByte+1;
}
if(mData[startByte] == 0x0A)
{
in->mImageUuid = IMG_EXPLOSION_4;
return startByte+1;
}
startByte++; // cause we actually have to read the UUID now.
memcpy(in->mImageUuid.mData, bufPtr, 16); /* Flawfinder: ignore */
return (startByte+16);
}
U32 LLPartSysCompressedPacket::readSpawn(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
U32 i;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnRange = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnFrequency = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnFreqencyRange = floatFromTwoBytes(bMant, bExp);
for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnDirection[i] = floatFromTwoBytes(bMant, bExp);
}
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnDirectionRange = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->spawnVelocity = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++]; bExp = mData[startByte++];
in->spawnVelocityRange = floatFromTwoBytes(bMant, bExp);
return startByte;
}
U32 LLPartSysCompressedPacket::readEnvironment(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
U32 i;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->windWeight = floatFromTwoBytes(bMant, bExp);
for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->currentGravity[i] = floatFromTwoBytes(bMant, bExp);
}
bMant = mData[startByte++];
bExp = mData[startByte++];
in->gravityWeight = floatFromTwoBytes(bMant, bExp);
return startByte;
}
U32 LLPartSysCompressedPacket::readLifespan(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->globalLifetime = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->individualLifetime = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->individualLifetimeRange = floatFromTwoBytes(bMant, bExp);
return startByte;
}
U32 LLPartSysCompressedPacket::readDecayDamp(LLPartInitData *in, U32 startByte)
{
S8 bMant, bExp;
bMant = mData[startByte++];
bExp = mData[startByte++];
in->speedLimit = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->alphaDecay = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->scaleDecay = floatFromTwoBytes(bMant, bExp);
bMant = mData[startByte++];
bExp = mData[startByte++];
in->dampMotionFactor = floatFromTwoBytes(bMant, bExp);
return startByte;
}
U32 LLPartSysCompressedPacket::readWindDiffusionFactor(LLPartInitData *in, U32 startByte)
{
int i; S8 bMant, bExp;
for(i = 0; i < 3; i++)
{
bMant = mData[startByte++];
bExp = mData[startByte++];
in->windDiffusionFactor[i] = floatFromTwoBytes(bMant, bExp);
}
return startByte;
}
BOOL LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed)
{
writeFlagByte(in);
U32 currByte = 4;
// llprintline("calling \"fromLLPartInitData\"\n");
//if(mData[0] & PART_SYS_K_MASK)
//{
// currByte = writeK(in, 3); // first 3 bytes are reserved for header data
//}
if(mData[0] & PART_SYS_KILL_P_MASK)
{
currByte = writeKill_p(in, currByte);
}
if(mData[0] & PART_SYS_BOUNCE_P_MASK)
{
currByte = writeBounce_p(in, currByte);
}
if(mData[0] & PART_SYS_BOUNCE_B_MASK)
{
currByte = writeBounce_b(in, currByte);
}
//if(mData[0] & PART_SYS_POS_RANGES_MASK)
//{
// currByte = writePos_ranges(in, currByte);
//}
//if(mData[0] & PART_SYS_VEL_RANGES_MASK)
//{
// currByte = writeVel_ranges(in, currByte);
//}
if(mData[0] & PART_SYS_ALPHA_SCALE_DIFF_MASK)
{
currByte = writeAlphaScaleDiffEqn_range(in, currByte);
}
if(mData[0] & PART_SYS_SCALE_RANGE_MASK)
{
currByte = writeScale_range(in, currByte);
}
if(mData[0] & PART_SYS_VEL_OFFSET_MASK)
{
currByte = writeVelocityOffset(in, currByte);
}
if(mData[0] & PART_SYS_M_IMAGE_UUID_MASK)
{
currByte = writeUUID(in, currByte);
}
if(mData[3] & PART_SYS_BYTE_SPAWN_MASK)
{
currByte = writeSpawn(in, currByte);
}
if(mData[3] & PART_SYS_BYTE_ENVIRONMENT_MASK)
{
currByte = writeEnvironment(in, currByte);
}
if(mData[3] & PART_SYS_BYTE_LIFESPAN_MASK)
{
currByte = writeLifespan(in, currByte);
}
if(mData[3] & PART_SYS_BYTE_DECAY_DAMP_MASK)
{
currByte = writeDecayDamp(in, currByte);
}
if(mData[3] & PART_SYS_BYTE_WIND_DIFF_MASK)
{
currByte = writeWindDiffusionFactor(in, currByte);
}
if(mData[2] & PART_SYS_BYTE_3_ALPHA_MASK)
{
currByte = writeAlpha_range(in, currByte);
}
mData[currByte++] = (U8)in->maxParticles;
mData[currByte++] = (U8)in->initialParticles;
U32 flagFlag = 1; // flag indicating which flag bytes are non-zero
// yeah, I know, the name sounds funny
for(U32 i = 0; i < 8; i++)
{
// llprintline("Flag \"%x\" gets byte \"%x\"\n", flagFlag, in->mFlags[i]);
if(mData[1] & flagFlag)
{
mData[currByte++] = in->mFlags[i];
// llprintline("and is valid...\n");
}
flagFlag <<= 1;
}
bytesUsed = mNumBytes = currByte;
// llprintline("returning from \"fromLLPartInitData\" with %d bytes\n", bytesUsed);
return TRUE;
}
BOOL LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytesUsed)
{
U32 currByte = 4;
gSetInitDataDefaults(out);
if(mData[0] & PART_SYS_KILL_P_MASK)
{
currByte = readKill_p(out, currByte);
}
if(mData[0] & PART_SYS_BOUNCE_P_MASK)
{
currByte = readBounce_p(out, currByte);
}
if(mData[0] & PART_SYS_BOUNCE_B_MASK)
{
currByte = readBounce_b(out, currByte);
}
if(mData[0] & PART_SYS_ALPHA_SCALE_DIFF_MASK)
{
currByte = readAlphaScaleDiffEqn_range(out, currByte);
}
if(mData[0] & PART_SYS_SCALE_RANGE_MASK)
{
currByte = readScale_range(out, currByte);
}
if(mData[0] & PART_SYS_VEL_OFFSET_MASK)
{
currByte = readVelocityOffset(out, currByte);
}
if(mData[0] & PART_SYS_M_IMAGE_UUID_MASK)
{
currByte = readUUID(out, currByte);
}
if(mData[3] & PART_SYS_BYTE_SPAWN_MASK)
{
currByte = readSpawn(out, currByte);
}
if(mData[3] & PART_SYS_BYTE_ENVIRONMENT_MASK)
{
currByte = readEnvironment(out, currByte);
}
if(mData[3] & PART_SYS_BYTE_LIFESPAN_MASK)
{
currByte = readLifespan(out, currByte);
}
if(mData[3] & PART_SYS_BYTE_DECAY_DAMP_MASK)
{
currByte = readDecayDamp(out, currByte);
}
if(mData[3] & PART_SYS_BYTE_WIND_DIFF_MASK)
{
currByte = readWindDiffusionFactor(out, currByte);
}
if(mData[2] & PART_SYS_BYTE_3_ALPHA_MASK)
{
currByte = readAlpha_range(out, currByte);
}
out->maxParticles = mData[currByte++];
out->initialParticles = mData[currByte++];
U32 flagFlag = 1; // flag indicating which flag bytes are non-zero
// yeah, I know, the name sounds funny
for(U32 i = 0; i < 8; i++)
{
flagFlag = 1<<i;
if((mData[1] & flagFlag))
{
out->mFlags[i] = mData[currByte++];
}
}
*bytesUsed = currByte;
return TRUE;
}
BOOL LLPartSysCompressedPacket::fromUnsignedBytes(U8 *in, U32 bytesUsed)
{
if ((in != NULL) && (bytesUsed <= sizeof(mData)))
{
memcpy(mData, in, bytesUsed); /* Flawfinder: ignore */
mNumBytes = bytesUsed;
return TRUE;
}
else
{
llerrs << "NULL input data or number of bytes exceed mData size" << llendl;
return FALSE;
}
}
U32 LLPartSysCompressedPacket::bufferSize()
{
return mNumBytes;
}
BOOL LLPartSysCompressedPacket::toUnsignedBytes(U8 *out)
{
memcpy(out, mData, mNumBytes); /* Flawfinder: ignore */
return TRUE;
}
U8 * LLPartSysCompressedPacket::getBytePtr()
{
return mData;
}