Print done when done.

1 files changed, 1277 insertions, 0 deletions

diff --git a/indra/llmessage/partsyspacket.cpp b/indra/llmessage/partsyspacket.cpp
new file mode 100644
index 0000000000..4030cd815b
--- /dev/null
+++ b/indra/llmessage/partsyspacket.cpp
@@ -0,0 +1,1277 @@
+/** 
+ * @file partsyspacket.cpp
+ * @brief Object for packing particle system initialization parameters
+ * before sending them over the network.
+ *
+ * Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#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';
+	}
+
+	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);
+		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;
+}
+
+