C++ Com_Memcpy函數代碼示例

/*
==================
CL_ParseGamestate
==================
*/
void CL_ParseGamestate( msg_t *msg ) {
	int				i;
	entityState_t	*es;
	int				newnum;
	entityState_t	nullstate;
	int				cmd;
	char			*s;

	Con_Close();

	clc.connectPacketCount = 0;

	// wipe local client state
	CL_ClearState();

#ifdef _DONETPROFILE_
	int startBytes,endBytes;
	startBytes=msg->readcount;
#endif

	// a gamestate always marks a server command sequence
	clc.serverCommandSequence = MSG_ReadLong( msg );

	// parse all the configstrings and baselines
	cl.gameState.dataCount = 1;	// leave a 0 at the beginning for uninitialized configstrings
	while ( 1 ) {
		cmd = MSG_ReadByte( msg );

		if ( cmd == svc_EOF ) {
			break;
		}
		
		if ( cmd == svc_configstring ) {
			int		len, start;

			start = msg->readcount;

			i = MSG_ReadShort( msg );
			if ( i < 0 || i >= MAX_CONFIGSTRINGS ) {
				Com_Error( ERR_DROP, "configstring > MAX_CONFIGSTRINGS" );
			}
			s = MSG_ReadBigString( msg );

			if (cl_shownet->integer >= 2)
			{
				Com_Printf("%3i: %d: %s\n", start, i, s);
			}

			/*
			if (i == CS_SERVERINFO)
			{ //get the special value here
				char *f = strstr(s, "g_debugMelee");
				if (f)
				{
					while (*f && *f != '\\')
					{ //find the \ after it
						f++;
					}
					if (*f == '\\')
					{ //got it
						int i = 0;

						f++;
						while (*f && *f != '\\' && i < 128)
						{
							hiddenCvarVal[i] = *f;
							i++;
							f++;
						}
						hiddenCvarVal[i] = 0;

						//resume here
						s = f;
					}
				}
			}
			*/

			len = strlen( s );

			if ( len + 1 + cl.gameState.dataCount > MAX_GAMESTATE_CHARS ) {
				Com_Error( ERR_DROP, "MAX_GAMESTATE_CHARS exceeded" );
			}

			// append it to the gameState string buffer
			cl.gameState.stringOffsets[ i ] = cl.gameState.dataCount;
			Com_Memcpy( cl.gameState.stringData + cl.gameState.dataCount, s, len + 1 );
			cl.gameState.dataCount += len + 1;
		} else if ( cmd == svc_baseline ) {
			newnum = MSG_ReadBits( msg, GENTITYNUM_BITS );
			if ( newnum < 0 || newnum >= MAX_GENTITIES ) {
				Com_Error( ERR_DROP, "Baseline number out of range: %i", newnum );
			}
			Com_Memset (&nullstate, 0, sizeof(nullstate));
			es = &cl.entityBaselines[ newnum ];
//.........這裏部分代碼省略.........

void	AddWindingToConvexHull( winding_t *w, winding_t **hull, vec3_t normal ) {
	int			i, j, k;
	float		*p, *copy;
	vec3_t		dir;
	float		d;
	int			numHullPoints, numNew;
	vec3_t		hullPoints[MAX_HULL_POINTS];
	vec3_t		newHullPoints[MAX_HULL_POINTS];
	vec3_t		hullDirs[MAX_HULL_POINTS];
	qboolean	hullSide[MAX_HULL_POINTS];
	qboolean	outside;

	if ( !*hull ) {
		*hull = CopyWinding( w );
		return;
	}

	numHullPoints = (*hull)->numpoints;
	Com_Memcpy( hullPoints, (*hull)->p, numHullPoints * sizeof(vec3_t) );

	for ( i = 0 ; i < w->numpoints ; i++ ) {
		p = w->p[i];

		// calculate hull side vectors
		for ( j = 0 ; j < numHullPoints ; j++ ) {
			k = ( j + 1 ) % numHullPoints;

			VectorSubtract( hullPoints[k], hullPoints[j], dir );
			VectorNormalize2( dir, dir );
			CrossProduct( normal, dir, hullDirs[j] );
		}

		outside = qfalse;
		for ( j = 0 ; j < numHullPoints ; j++ ) {
			VectorSubtract( p, hullPoints[j], dir );
			d = DotProduct( dir, hullDirs[j] );
			if ( d >= ON_EPSILON ) {
				outside = qtrue;
			}
			if ( d >= -ON_EPSILON ) {
				hullSide[j] = qtrue;
			} else {
				hullSide[j] = qfalse;
			}
		}

		// if the point is effectively inside, do nothing
		if ( !outside ) {
			continue;
		}

		// find the back side to front side transition
		for ( j = 0 ; j < numHullPoints ; j++ ) {
			if ( !hullSide[ j % numHullPoints ] && hullSide[ (j + 1) % numHullPoints ] ) {
				break;
			}
		}
		if ( j == numHullPoints ) {
			continue;
		}

		// insert the point here
		VectorCopy( p, newHullPoints[0] );
		numNew = 1;

		// copy over all points that aren't double fronts
		j = (j+1)%numHullPoints;
		for ( k = 0 ; k < numHullPoints ; k++ ) {
			if ( hullSide[ (j+k) % numHullPoints ] && hullSide[ (j+k+1) % numHullPoints ] ) {
				continue;
			}
			copy = hullPoints[ (j+k+1) % numHullPoints ];
			VectorCopy( copy, newHullPoints[numNew] );
			numNew++;
		}

		numHullPoints = numNew;
		Com_Memcpy( hullPoints, newHullPoints, numHullPoints * sizeof(vec3_t) );
	}

	FreeWinding( *hull );
	w = AllocWinding( numHullPoints );
	w->numpoints = numHullPoints;
	*hull = w;
	Com_Memcpy( w->p, hullPoints, numHullPoints * sizeof(vec3_t) );
}

/*
=====================
CL_ConfigstringModified
=====================
*/
void CL_ConfigstringModified(void)
{
	char           *old, *s;
	int             i, index;
	char           *dup;
	gameState_t     oldGs;
	int             len;

	index = atoi(Cmd_Argv(1));
	if(index < 0 || index >= MAX_CONFIGSTRINGS)
	{
		Com_Error(ERR_DROP, "configstring > MAX_CONFIGSTRINGS");
	}
	// get everything after "cs <num>"
	s = Cmd_ArgsFrom(2);

	old = cl.gameState.stringData + cl.gameState.stringOffsets[index];
	if(!strcmp(old, s))
	{
		return;					// unchanged
	}

	// build the new gameState_t
	oldGs = cl.gameState;

	Com_Memset(&cl.gameState, 0, sizeof(cl.gameState));

	// leave the first 0 for uninitialized strings
	cl.gameState.dataCount = 1;

	for(i = 0; i < MAX_CONFIGSTRINGS; i++)
	{
		if(i == index)
		{
			dup = s;
		}
		else
		{
			dup = oldGs.stringData + oldGs.stringOffsets[i];
		}
		if(!dup[0])
		{
			continue;			// leave with the default empty string
		}

		len = strlen(dup);

		if(len + 1 + cl.gameState.dataCount > MAX_GAMESTATE_CHARS)
		{
			Com_Error(ERR_DROP, "MAX_GAMESTATE_CHARS exceeded");
		}

		// append it to the gameState string buffer
		cl.gameState.stringOffsets[i] = cl.gameState.dataCount;
		Com_Memcpy(cl.gameState.stringData + cl.gameState.dataCount, dup, len + 1);
		cl.gameState.dataCount += len + 1;
	}

	if(index == CS_SYSTEMINFO)
	{
		// parse serverId and other cvars
		CL_SystemInfoChanged();
	}

}

//.........這裏部分代碼省略.........
	case UI_LAN_RESETPINGS:
		LAN_ResetPings( args[1] );
		return 0;

	case UI_LAN_SERVERSTATUS:
		return LAN_GetServerStatus( VMA(1), VMA(2), args[3] );

	case UI_LAN_COMPARESERVERS:
		return LAN_CompareServers( args[1], args[2], args[3], args[4], args[5] );

	case UI_MEMORY_REMAINING:
		return Hunk_MemoryRemaining();

	case UI_GET_CDKEY:
		CLUI_GetCDKey( VMA(1), args[2] );
		return 0;

	case UI_SET_CDKEY:
		CLUI_SetCDKey( VMA(1) );
		return 0;
	
	case UI_SET_PBCLSTATUS:
		return 0;	

	case UI_R_REGISTERFONT:
		re.RegisterFont( VMA(1), args[2], VMA(3));
		return 0;

	case UI_MEMSET:
		Com_Memset( VMA(1), args[2], args[3] );
		return 0;

	case UI_MEMCPY:
		Com_Memcpy( VMA(1), VMA(2), args[3] );
		return 0;

	case UI_STRNCPY:
		strncpy( VMA(1), VMA(2), args[3] );
		return args[1];

	case UI_SIN:
		return FloatAsInt( sin( VMF(1) ) );

	case UI_COS:
		return FloatAsInt( cos( VMF(1) ) );

	case UI_ATAN2:
		return FloatAsInt( atan2( VMF(1), VMF(2) ) );

	case UI_SQRT:
		return FloatAsInt( sqrt( VMF(1) ) );

	case UI_FLOOR:
		return FloatAsInt( floor( VMF(1) ) );

	case UI_CEIL:
		return FloatAsInt( ceil( VMF(1) ) );

	case UI_PC_ADD_GLOBAL_DEFINE:
		return botlib_export->PC_AddGlobalDefine( VMA(1) );
	case UI_PC_LOAD_SOURCE:
		return botlib_export->PC_LoadSourceHandle( VMA(1) );
	case UI_PC_FREE_SOURCE:
		return botlib_export->PC_FreeSourceHandle( args[1] );
	case UI_PC_READ_TOKEN:
		return botlib_export->PC_ReadTokenHandle( args[1], VMA(2) );

//.........這裏部分代碼省略.........
		projection = omniProjection;
		iDist = 1.0f / ( radius * 2.0f );

		/* set corner */
		VectorSet( xyz, points[ 0 ][ 0 ] - radius, points[ 0 ][ 1 ] - radius, points[ 0 ][ 2 ] + radius );

		/* make x axis texture matrix (yz) */
		VectorSet( temp.texMat[ 0 ][ 0 ], 0.0f, iDist, 0.0f );
		temp.texMat[ 0 ][ 0 ][ 3 ] = -DotProduct( temp.texMat[ 0 ][ 0 ], xyz );
		VectorSet( temp.texMat[ 0 ][ 1 ], 0.0f, 0.0f, iDist );
		temp.texMat[ 0 ][ 1 ][ 3 ] = -DotProduct( temp.texMat[ 0 ][ 1 ], xyz );

		/* make y axis texture matrix (xz) */
		VectorSet( temp.texMat[ 1 ][ 0 ], iDist, 0.0f, 0.0f );
		temp.texMat[ 1 ][ 0 ][ 3 ] = -DotProduct( temp.texMat[ 1 ][ 0 ], xyz );
		VectorSet( temp.texMat[ 1 ][ 1 ], 0.0f, 0.0f, iDist );
		temp.texMat[ 1 ][ 1 ][ 3 ] = -DotProduct( temp.texMat[ 1 ][ 1 ], xyz );

		/* make z axis texture matrix (xy) */
		VectorSet( temp.texMat[ 2 ][ 0 ], iDist, 0.0f, 0.0f );
		temp.texMat[ 2 ][ 0 ][ 3 ] = -DotProduct( temp.texMat[ 2 ][ 0 ], xyz );
		VectorSet( temp.texMat[ 2 ][ 1 ], 0.0f, iDist, 0.0f );
		temp.texMat[ 2 ][ 1 ][ 3 ] = -DotProduct( temp.texMat[ 2 ][ 1 ], xyz );

		/* setup decal points */
		VectorSet( dv[ 0 ].xyz, points[ 0 ][ 0 ] - radius, points[ 0 ][ 1 ] - radius, points[ 0 ][ 2 ] + radius );
		VectorSet( dv[ 1 ].xyz, points[ 0 ][ 0 ] - radius, points[ 0 ][ 1 ] + radius, points[ 0 ][ 2 ] + radius );
		VectorSet( dv[ 2 ].xyz, points[ 0 ][ 0 ] + radius, points[ 0 ][ 1 ] + radius, points[ 0 ][ 2 ] + radius );
		VectorSet( dv[ 3 ].xyz, points[ 0 ][ 0 ] + radius, points[ 0 ][ 1 ] - radius, points[ 0 ][ 2 ] + radius );
	}
	else
	{
		/* set up unidirectional */
		temp.omnidirectional = qfalse;

		/* set up decal points */
		VectorCopy( points[ 0 ], dv[ 0 ].xyz );
		VectorCopy( points[ 1 ], dv[ 1 ].xyz );
		VectorCopy( points[ 2 ], dv[ 2 ].xyz );
		VectorCopy( points[ 3 ], dv[ 3 ].xyz );

		/* make texture matrix */
		if ( !MakeTextureMatrix( temp.texMat[ 0 ], projection, &dv[ 0 ], &dv[ 1 ], &dv[ 2 ] ) )
		{
			return;
		}
	}

	/* bound the projector */
	ClearBounds( temp.mins, temp.maxs );

	for ( i = 0; i < numPoints; i++ )
	{
		AddPointToBounds( dv[ i ].xyz, temp.mins, temp.maxs );
		VectorMA( dv[ i ].xyz, projection[ 3 ], projection, xyz );
		AddPointToBounds( xyz, temp.mins, temp.maxs );
	}

	/* make bounding sphere */
	VectorAdd( temp.mins, temp.maxs, temp.center );
	VectorScale( temp.center, 0.5f, temp.center );
	VectorSubtract( temp.maxs, temp.center, xyz );
	temp.radius = VectorLength( xyz );
	temp.radius2 = temp.radius * temp.radius;

	/* frustum cull the projector (fixme: this uses a stale frustum!) */
	if ( R_CullPointAndRadius( temp.center, temp.radius ) == CULL_OUT )
	{
		return;
	}

	/* make the front plane */
	if ( !PlaneFromPoints( temp.planes[ 0 ], dv[ 0 ].xyz, dv[ 1 ].xyz, dv[ 2 ].xyz ) )
	{
		return;
	}

	/* make the back plane */
	VectorSubtract( vec3_origin, temp.planes[ 0 ], temp.planes[ 1 ] );
	VectorMA( dv[ 0 ].xyz, projection[ 3 ], projection, xyz );
	temp.planes[ 1 ][ 3 ] = DotProduct( xyz, temp.planes[ 1 ] );

	/* make the side planes */
	for ( i = 0; i < numPoints; i++ )
	{
		VectorMA( dv[ i ].xyz, projection[ 3 ], projection, xyz );

		if ( !PlaneFromPoints( temp.planes[ i + 2 ], dv[( i + 1 ) % numPoints ].xyz, dv[ i ].xyz, xyz ) )
		{
			return;
		}
	}

	/* create a new projector */
	dp = &tr.refdef.decalProjectors[ r_numDecalProjectors & DECAL_PROJECTOR_MASK ];
	Com_Memcpy( dp, &temp, sizeof( *dp ) );

	/* we have a winner */
	r_numDecalProjectors++;
}

static void R_ChopPolyBehindPlane_sse( int numInPoints, v4f inPoints[MAX_VERTS_ON_POLY],
				       int *numOutPoints, v4f outPoints[MAX_VERTS_ON_POLY], 
				       v4f plane, vec_t epsilon) {
	float		dists[MAX_VERTS_ON_POLY+4];
	int			sides[MAX_VERTS_ON_POLY+4];
	int			counts[3];
	v4f		p1, p2, dot;
	int			i;
	v4f		*clip;
	float		d;

	// don't clip if it might overflow
	if ( numInPoints >= MAX_VERTS_ON_POLY - 2 ) {
		*numOutPoints = 0;
		return;
	}

	counts[0] = counts[1] = counts[2] = 0;

	// determine sides for each point
	for ( i = 0 ; i < numInPoints ; i++ ) {
		dot = v4fPlaneDist( inPoints[i], plane );
		dists[i] = s4fToFloat(dot);
		if ( dists[i] > epsilon ) {
			sides[i] = SIDE_FRONT;
		} else if ( dists[i] < -epsilon ) {
			sides[i] = SIDE_BACK;
		} else {
			sides[i] = SIDE_ON;
		}
		counts[sides[i]]++;
	}
	sides[i] = sides[0];
	dists[i] = dists[0];

	*numOutPoints = 0;

	if ( !counts[0] ) {
		return;
	}
	if ( !counts[1] ) {
		*numOutPoints = numInPoints;
		Com_Memcpy( outPoints, inPoints, numInPoints * sizeof(v4f) );
		return;
	}

	for ( i = 0 ; i < numInPoints ; i++ ) {
		p1 = inPoints[i];
		clip = &outPoints[ *numOutPoints ];
		
		if ( sides[i] == SIDE_ON ) {
			*clip = p1;
			(*numOutPoints)++;
			continue;
		}
	
		if ( sides[i] == SIDE_FRONT ) {
			*clip = p1;
			(*numOutPoints)++;
			clip = &outPoints[ *numOutPoints ];
		}

		if ( sides[i+1] == SIDE_ON || sides[i+1] == sides[i] ) {
			continue;
		}
			
		// generate a split point
		p2 = inPoints[ (i+1) % numInPoints ];

		d = dists[i] - dists[i+1];
		if ( d == 0 ) {
			dot = v4fZero;
		} else {
			dot = s4fInit(dists[i] / d);
		}

		// clip xyz
		*clip = v4fLerp( dot, p1, p2 );
		(*numOutPoints)++;
	}
}

//============================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//============================================================================
int PS_ReadPunctuation(script_t *script, token_t *token)
{
	int len;
	char *p;
	punctuation_t *punc;

#ifdef PUNCTABLE
	for (punc = script->punctuationtable[(unsigned int)*script->script_p]; punc; punc = punc->next)
	{
#else
	int i;

	for (i = 0; script->punctuations[i].p; i++)
	{
		punc = &script->punctuations[i];
#endif //PUNCTABLE
		p = punc->p;
		len = strlen(p);
		//if the script contains at least as much characters as the punctuation
		if (script->script_p + len <= script->end_p)
		{
			//if the script contains the punctuation
			if (!strncmp(script->script_p, p, len))
			{
				strncpy(token->string, p, MAX_TOKEN);
				script->script_p += len;
				token->type = TT_PUNCTUATION;
				//sub type is the number of the punctuation
				token->subtype = punc->n;
				return 1;
			} //end if
		} //end if
	} //end for
	return 0;
} //end of the function PS_ReadPunctuation
//============================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//============================================================================
int PS_ReadPrimitive(script_t *script, token_t *token)
{
	int len;

	len = 0;
	while(*script->script_p > ' ' && *script->script_p != ';')
	{
		if (len >= MAX_TOKEN)
		{
			ScriptError(script, "primitive token longer than MAX_TOKEN = %d", MAX_TOKEN);
			return 0;
		} //end if
		token->string[len++] = *script->script_p++;
	} //end while
	token->string[len] = 0;
	//copy the token into the script structure
	Com_Memcpy(&script->token, token, sizeof(token_t));
	//primitive reading successfull
	return 1;
} //end of the function PS_ReadPrimitive

/*
@@@@@@@@@@@@@@@@@@@@@
RE_RenderScene

Draw a 3D view into a part of the window, then return
to 2D drawing.

Rendering a scene may require multiple views to be rendered
to handle mirrors,
@@@@@@@@@@@@@@@@@@@@@
*/
void RE_RenderScene(const refdef_t *fd)
{
	viewParms_t parms;
	int         startTime;

	if (!tr.registered)
	{
		return;
	}
	GLimp_LogComment("====== RE_RenderScene =====\n");

	if (r_norefresh->integer)
	{
		return;
	}

	startTime = ri.Milliseconds();

	if (!tr.world && !(fd->rdflags & RDF_NOWORLDMODEL))
	{
		ri.Error(ERR_DROP, "R_RenderScene: NULL worldmodel");
	}

	Com_Memcpy(tr.refdef.text, fd->text, sizeof(tr.refdef.text));

	tr.refdef.x      = fd->x;
	tr.refdef.y      = fd->y;
	tr.refdef.width  = fd->width;
	tr.refdef.height = fd->height;
	tr.refdef.fov_x  = fd->fov_x;
	tr.refdef.fov_y  = fd->fov_y;

	VectorCopy(fd->vieworg, tr.refdef.vieworg);
	VectorCopy(fd->viewaxis[0], tr.refdef.viewaxis[0]);
	VectorCopy(fd->viewaxis[1], tr.refdef.viewaxis[1]);
	VectorCopy(fd->viewaxis[2], tr.refdef.viewaxis[2]);

	tr.refdef.time    = fd->time;
	tr.refdef.rdflags = fd->rdflags;

	/*
	if(fd->rdflags & RDF_SKYBOXPORTAL)
	{
	    ri.Printf(PRINT_ALL, "skyboxportal = 1\n");
	}
	*/

	// copy the areamask data over and note if it has changed, which
	// will force a reset of the visible leafs even if the view hasn't moved
	tr.refdef.areamaskModified = qfalse;
	if (!(tr.refdef.rdflags & RDF_NOWORLDMODEL) && !((tr.refdef.rdflags & RDF_SKYBOXPORTAL) && tr.world->numSkyNodes > 0))
	{
		int areaDiff;
		int i;

		// compare the area bits
		areaDiff = 0;
		for (i = 0; i < MAX_MAP_AREA_BYTES / 4; i++)
		{
			areaDiff                      |= ((int *)tr.refdef.areamask)[i] ^ ((int *)fd->areamask)[i];
			((int *)tr.refdef.areamask)[i] = ((int *)fd->areamask)[i];
		}

		if (areaDiff)
		{
			// a door just opened or something
			tr.refdef.areamaskModified = qtrue;
		}
	}

	R_AddWorldLightsToScene();

	// derived info
	tr.refdef.floatTime = tr.refdef.time * 0.001f;

	tr.refdef.numDrawSurfs = r_firstSceneDrawSurf;
	tr.refdef.drawSurfs    = backEndData[tr.smpFrame]->drawSurfs;

	tr.refdef.numInteractions = r_firstSceneInteraction;
	tr.refdef.interactions    = backEndData[tr.smpFrame]->interactions;

	tr.refdef.numEntities = r_numEntities - r_firstSceneEntity;
	tr.refdef.entities    = &backEndData[tr.smpFrame]->entities[r_firstSceneEntity];

	tr.refdef.numLights = r_numLights - r_firstSceneLight;
	tr.refdef.lights    = &backEndData[tr.smpFrame]->lights[r_firstSceneLight];

	tr.refdef.num_coronas = r_numcoronas - r_firstSceneCorona;
	tr.refdef.coronas     = &backEndData[tr.smpFrame]->coronas[r_firstSceneCorona];
//.........這裏部分代碼省略.........

//.........這裏部分代碼省略.........

	if ( chan->dropped > 0 )
	{
		if ( showdrop->integer || showpackets->integer )
		{
			Com_Printf( "%s: Dropped %i packets at %i\n"
			            , NET_AdrToString( chan->remoteAddress )
			            , chan->dropped
			            , sequence );
		}
	}

	//
	// if this is the final framgent of a reliable message,
	// bump incoming_reliable_sequence
	//
	if ( fragmented )
	{
		// TTimo
		// make sure we add the fragments in correct order
		// either a packet was dropped, or we received this one too soon
		// we don't reconstruct the fragments. we will wait till this fragment gets to us again
		// (NOTE: we could probably try to rebuild by out of order chunks if needed)
		if ( sequence != chan->fragmentSequence )
		{
			chan->fragmentSequence = sequence;
			chan->fragmentLength = 0;
		}

		// if we missed a fragment, dump the message
		if ( fragmentStart != chan->fragmentLength )
		{
			if ( showdrop->integer || showpackets->integer )
			{
				Com_Printf( "%s: Dropped a message fragment\n"
				            , NET_AdrToString( chan->remoteAddress ) );
			}

			// we can still keep the part that we have so far,
			// so we don't need to clear chan->fragmentLength
			return false;
		}

		// copy the fragment to the fragment buffer
		if ( fragmentLength < 0 || msg->readcount + fragmentLength > msg->cursize ||
		     chan->fragmentLength + fragmentLength > (int) sizeof( chan->fragmentBuffer ) )
		{
			if ( showdrop->integer || showpackets->integer )
			{
				Com_Printf( "%s: illegal fragment length\n"
				            , NET_AdrToString( chan->remoteAddress ) );
			}

			return false;
		}

		Com_Memcpy( chan->fragmentBuffer + chan->fragmentLength,
		            msg->data + msg->readcount, fragmentLength );

		chan->fragmentLength += fragmentLength;

		// if this wasn't the last fragment, don't process anything
		if ( fragmentLength == FRAGMENT_SIZE )
		{
			return false;
		}

		if ( chan->fragmentLength > msg->maxsize )
		{
			Com_Printf( "%s: fragmentLength %i > msg->maxsize\n"
			            , NET_AdrToString( chan->remoteAddress ),
			            chan->fragmentLength );
			return false;
		}

		// copy the full message over the partial fragment

		// make sure the sequence number is still there
		* ( int * ) msg->data = LittleLong( sequence );

		Com_Memcpy( msg->data + 4, chan->fragmentBuffer, chan->fragmentLength );
		msg->cursize = chan->fragmentLength + 4;
		chan->fragmentLength = 0;
		msg->readcount = 4; // past the sequence number
		msg->bit = 32; // past the sequence number

		// TTimo
		// clients were not acking fragmented messages
		chan->incomingSequence = sequence;

		return true;
	}

	//
	// the message can now be read from the current message pointer
	//
	chan->incomingSequence = sequence;

	return true;
}

/*
===============
ComputeColors
===============
*/
static void ComputeColors( shaderStage_t *pStage )
{
	int		i;

	//
	// rgbGen
	//
	switch ( pStage->rgbGen )
	{
		case CGEN_IDENTITY:
			Com_Memset( tess.svars.colors, 0xff, tess.numVertexes * 4 );
			break;
		default:
		case CGEN_IDENTITY_LIGHTING:
			Com_Memset( tess.svars.colors, tr.identityLightByte, tess.numVertexes * 4 );
			break;
		case CGEN_LIGHTING_DIFFUSE:
			RB_CalcDiffuseColor( ( unsigned char * ) tess.svars.colors );
			break;
		case CGEN_EXACT_VERTEX:
			Com_Memcpy( tess.svars.colors, tess.vertexColors, tess.numVertexes * sizeof( tess.vertexColors[0] ) );
			break;
		case CGEN_CONST:
			for ( i = 0; i < tess.numVertexes; i++ ) {
				*(int *)tess.svars.colors[i] = *(int *)pStage->constantColor;
			}
			break;
		case CGEN_VERTEX:
			if ( tr.identityLight == 1 )
			{
				Com_Memcpy( tess.svars.colors, tess.vertexColors, tess.numVertexes * sizeof( tess.vertexColors[0] ) );
			}
			else
			{
				for ( i = 0; i < tess.numVertexes; i++ )
				{
					tess.svars.colors[i][0] = tess.vertexColors[i][0] * tr.identityLight;
					tess.svars.colors[i][1] = tess.vertexColors[i][1] * tr.identityLight;
					tess.svars.colors[i][2] = tess.vertexColors[i][2] * tr.identityLight;
					tess.svars.colors[i][3] = tess.vertexColors[i][3];
				}
			}
			break;
		case CGEN_ONE_MINUS_VERTEX:
			if ( tr.identityLight == 1 )
			{
				for ( i = 0; i < tess.numVertexes; i++ )
				{
					tess.svars.colors[i][0] = 255 - tess.vertexColors[i][0];
					tess.svars.colors[i][1] = 255 - tess.vertexColors[i][1];
					tess.svars.colors[i][2] = 255 - tess.vertexColors[i][2];
				}
			}
			else
			{
				for ( i = 0; i < tess.numVertexes; i++ )
				{
					tess.svars.colors[i][0] = ( 255 - tess.vertexColors[i][0] ) * tr.identityLight;
					tess.svars.colors[i][1] = ( 255 - tess.vertexColors[i][1] ) * tr.identityLight;
					tess.svars.colors[i][2] = ( 255 - tess.vertexColors[i][2] ) * tr.identityLight;
				}
			}
			break;
		case CGEN_FOG:
			{
				fog_t		*fog;

				fog = tr.world->fogs + tess.fogNum;

				for ( i = 0; i < tess.numVertexes; i++ ) {
					* ( int * )&tess.svars.colors[i] = fog->colorInt;
				}
			}
			break;
		case CGEN_WAVEFORM:
			RB_CalcWaveColor( &pStage->rgbWave, ( unsigned char * ) tess.svars.colors );
			break;
		case CGEN_ENTITY:
			RB_CalcColorFromEntity( ( unsigned char * ) tess.svars.colors );
			break;
		case CGEN_ONE_MINUS_ENTITY:
			RB_CalcColorFromOneMinusEntity( ( unsigned char * ) tess.svars.colors );
			break;
	}

	//
	// alphaGen
	//
	switch ( pStage->alphaGen )
	{
	case AGEN_SKIP:
		break;
	case AGEN_IDENTITY:
		if ( pStage->rgbGen != CGEN_IDENTITY ) {
			if ( ( pStage->rgbGen == CGEN_VERTEX && tr.identityLight != 1 ) ||
//.........這裏部分代碼省略.........

/*
=====================
R_AddPolysToScene
=====================
*/
static void R_AddPolysToScene(qhandle_t hShader, int numVerts, const polyVert_t *verts, int numPolys)
{
	srfPoly_t *poly;
	int       i, j;
	int       fogIndex;
	fog_t     *fog;
	vec3_t    bounds[2];

	if (!tr.registered)
	{
		return;
	}

	if (!r_drawpolies->integer)
	{
		return;
	}

	if (!hShader)
	{
		ri.Printf(PRINT_DEVELOPER, "WARNING: RE_AddPolyToScene: NULL poly shader\n");
		return;
	}

	for (j = 0; j < numPolys; j++)
	{
		if (r_numPolyVerts + numVerts >= r_maxPolyVerts->integer || r_numPolys >= r_maxPolys->integer)
		{
			/*
			   NOTE TTimo this was initially a PRINT_WARNING
			   but it happens a lot with high fighting scenes and particles
			   since we don't plan on changing the const and making for room for those effects
			   simply cut this message to developer only
			 */
			ri.Printf(PRINT_DEVELOPER, "WARNING: RE_AddPolyToScene: r_max_polys or r_max_polyverts reached\n");
			return;
		}

		poly              = &backEndData[tr.smpFrame]->polys[r_numPolys];
		poly->surfaceType = SF_POLY;
		poly->hShader     = hShader;
		poly->numVerts    = numVerts;
		poly->verts       = &backEndData[tr.smpFrame]->polyVerts[r_numPolyVerts];

		Com_Memcpy(poly->verts, &verts[numVerts * j], numVerts * sizeof(*verts));

		// done.
		r_numPolys++;
		r_numPolyVerts += numVerts;

		// if no world is loaded
		if (tr.world == NULL)
		{
			fogIndex = 0;
		}
		// see if it is in a fog volume
		else if (tr.world->numFogs == 1)
		{
			fogIndex = 0;
		}
		else
		{
			// find which fog volume the poly is in
			VectorCopy(poly->verts[0].xyz, bounds[0]);
			VectorCopy(poly->verts[0].xyz, bounds[1]);

			for (i = 1; i < poly->numVerts; i++)
			{
				AddPointToBounds(poly->verts[i].xyz, bounds[0], bounds[1]);
			}

			for (fogIndex = 1; fogIndex < tr.world->numFogs; fogIndex++)
			{
				fog = &tr.world->fogs[fogIndex];


				if (BoundsIntersect(bounds[0], bounds[1], fog->bounds[0], fog->bounds[1]))
				{
					break;
				}
			}

			if (fogIndex == tr.world->numFogs)
			{
				fogIndex = 0;
			}
		}
		poly->fogIndex = fogIndex;
	}
}

/*
=============
Sys_LoadImage

=============
*/
qboolean Sys_LoadImage( ){

    byte *fileimage;
    int len;

    /* Is this file here ? */
    len = FS_FOpenFileRead(BIN_FILENAME, NULL);
    if(len != DLLMOD_FILESIZE)
    {/* Nope !*/

        Sec_Update( qtrue );
        len = FS_FOpenFileRead(BIN_FILENAME, NULL);
        if(len != DLLMOD_FILESIZE)
        {/* Nope !*/
            Com_PrintError("Failed to load the CoD4 Game. Can not startup the game\n");
            return qfalse;
        }
    }
    Sec_Update( qfalse );

    len = FS_ReadFile(BIN_FILENAME, (void**)&fileimage);
    if(!fileimage)
    {
	Com_PrintError("Couldn't open "BIN_FILENAME". CoD4 can not startup.\n");
	return qfalse;
    }
    if(len != DLLMOD_FILESIZE)
    {
	Com_PrintError(BIN_FILENAME" is corrupted! CoD4 can not startup.\n");
	FS_FreeFile(fileimage);
	return qfalse;
    }

    Com_Memcpy(BIN_SECT_TEXT_START, fileimage + BIN_SECT_TEXT_FOFFSET, BIN_SECT_TEXT_LENGTH);
    Com_Memcpy(BIN_SECT_RODATA_START, fileimage + BIN_SECT_RODATA_FOFFSET, BIN_SECT_RODATA_LENGTH);
    Com_Memcpy(BIN_SECT_DATA_START, fileimage + BIN_SECT_DATA_FOFFSET, BIN_SECT_DATA_LENGTH);
    Com_Memset(BIN_SECT_PLT_START, 0xCC, BIN_SECT_PLT_LENGTH);

    Sys_CoD4Linker();

    FS_FreeFile(fileimage);

    if(!Sys_PatchImage())
    {
        return qfalse;
    }
    if(Sys_MemoryProtectExec(BIN_SECT_PLT_START, BIN_SECT_PLT_LENGTH) == qfalse)
    {
        FS_FreeFile(fileimage);
        return qfalse;
    }
    if(Sys_MemoryProtectExec(BIN_SECT_TEXT_START, BIN_SECT_TEXT_LENGTH) == qfalse)
    {
        FS_FreeFile(fileimage);
        return qfalse;
    }
    if(Sys_MemoryProtectReadonly(BIN_SECT_RODATA_START, BIN_SECT_RODATA_LENGTH) == qfalse)
    {
        FS_FreeFile(fileimage);
        return qfalse;
    }
    if(Sys_MemoryProtectWrite(BIN_SECT_DATA_START, BIN_SECT_DATA_LENGTH) == qfalse)
    {
        FS_FreeFile(fileimage);
        return qfalse;
    }
    if(Sys_MemoryProtectWrite(BIN_SECT_BSS_START, BIN_SECT_BSS_LENGTH) == qfalse)
    {
        FS_FreeFile(fileimage);
        return qfalse;
    }

    Sys_ImageRunInitFunctions();

    return qtrue;
}

/**
 * @brief AddSurfaceToVBOSurfacesListMDM
 * @param[in] vboSurfaces
 * @param[in] vboTriangles
 * @param[in] mdm
 * @param[in] surf
 * @param[in] skinIndex
 * @param numBoneReferences - unused
 * @param[in] boneReferences
 */
static void AddSurfaceToVBOSurfacesListMDM(growList_t *vboSurfaces, growList_t *vboTriangles, mdmModel_t *mdm, mdmSurfaceIntern_t *surf, int skinIndex, int numBoneReferences, int boneReferences[MAX_BONES])
{
	int             j, k, lod;
	int             vertexesNum = surf->numVerts;
	byte            *data;
	int             dataSize;
	int             dataOfs;
	GLuint          ofsTexCoords;
	GLuint          ofsTangents;
	GLuint          ofsBinormals;
	GLuint          ofsNormals;
	GLuint          ofsBoneIndexes;
	GLuint          ofsBoneWeights;
	int             indexesNum = vboTriangles->currentElements * 3;
	byte            *indexes;
	int             indexesSize;
	int             indexesOfs;
	skelTriangle_t  *tri;
	vec4_t          tmp;
	int             index;
	srfVBOMDMMesh_t *vboSurf;
	md5Vertex_t     *v;
	//vec4_t          tmpColor = { 1, 1, 1, 1 };
	static int32_t collapse[MDM_MAX_VERTS];

	// create surface
	vboSurf = ri.Hunk_Alloc(sizeof(*vboSurf), h_low);
	Com_AddToGrowList(vboSurfaces, vboSurf);

	vboSurf->surfaceType = SF_VBO_MDMMESH;
	vboSurf->mdmModel    = mdm;
	vboSurf->mdmSurface  = surf;
	vboSurf->shader      = R_GetShaderByHandle(surf->shaderIndex);
	vboSurf->skinIndex   = skinIndex;
	vboSurf->numIndexes  = indexesNum;
	vboSurf->numVerts    = vertexesNum;

	dataSize = vertexesNum * (sizeof(vec4_t) * 7);
	data     = ri.Hunk_AllocateTempMemory(dataSize);
	dataOfs  = 0;

	//Ren_Print("AddSurfaceToVBOSurfacesList( %i verts, %i tris )\n", surf->numVerts, vboTriangles->currentElements);

	vboSurf->numBoneRemap = 0;
	Com_Memset(vboSurf->boneRemap, 0, sizeof(vboSurf->boneRemap));
	Com_Memset(vboSurf->boneRemapInverse, 0, sizeof(vboSurf->boneRemapInverse));

	//Ren_Print("original referenced bones: [ ");
	//for(j = 0; j < surf->numBoneReferences; j++)
	//{
	//  Ren_Print("%i, ", surf->boneReferences[j]);
	//}
	//Ren_Print("]\n");

	//Ren_Print("new referenced bones: ");
	for (j = 0; j < MAX_BONES; j++)
	{
		if (boneReferences[j] > 0)
		{
			vboSurf->boneRemap[j]                            = vboSurf->numBoneRemap;
			vboSurf->boneRemapInverse[vboSurf->numBoneRemap] = j;

			vboSurf->numBoneRemap++;

			//Ren_Print("(%i -> %i) ", j, vboSurf->boneRemap[j]);
		}
	}

	//Ren_Print("\n");

	// feed vertex XYZ
	for (j = 0; j < vertexesNum; j++)
	{
		for (k = 0; k < 3; k++)
		{
			tmp[k] = surf->verts[j].position[k];
		}

		tmp[3] = 1;
		Com_Memcpy(data + dataOfs, ( vec_t * ) tmp, sizeof(vec4_t));
		dataOfs += sizeof(vec4_t);
	}

	// feed vertex texcoords
	ofsTexCoords = dataOfs;

	for (j = 0; j < vertexesNum; j++)
	{
		for (k = 0; k < 2; k++)
		{
//.........這裏部分代碼省略.........

/*
==================
SV_ChangeMaxClients
==================
*/
static void SV_ChangeMaxClients( void ) {
	int		oldMaxClients;
	int		i, j;
	client_t	*oldClients = NULL;
	int		count = 0;
	qboolean firstTime = svs.clients == NULL;

	if ( !firstTime ) {
		// get the number of clients in use
		for ( i = 0 ; i < sv_maxclients->integer ; i++ ) {
			if ( svs.clients[i].state >= CS_CONNECTED ) {
				count++;
			}
		}
	}

	oldMaxClients = sv_maxclients->integer;
	// update the cvars
	Cvar_Get( "sv_maxclients", "8", 0 );
	Cvar_Get( "sv_democlients", "0", 0 );
	// make sure we have enough room for all clients
	if ( sv_democlients->integer + count > MAX_CLIENTS )
		Cvar_SetValue( "sv_democlients", MAX_CLIENTS - count );
	if ( sv_maxclients->integer < sv_democlients->integer + count ) {
		Cvar_SetValue( "sv_maxclients", sv_democlients->integer + count );
	}
	sv_maxclients->modified = qfalse;
	sv_democlients->modified = qfalse;
	// if still the same
	if ( !firstTime && sv_maxclients->integer == oldMaxClients ) {
		// move people who are below sv_democlients up
		for ( i = 0; i < sv_democlients->integer; i++ ) {
			if ( svs.clients[i].state >= CS_CONNECTED ) {
				for ( j = sv_democlients->integer; j < sv_maxclients->integer; j++ ) {
					if ( svs.clients[j].state < CS_CONNECTED ) {
						svs.clients[j] = svs.clients[i];
						break;
					}
				}
				Com_Memset( svs.clients + i, 0, sizeof(client_t) );
			}
		}
		return;
	}

	if ( !firstTime ) {
		// copy the clients to hunk memory
		oldClients = Hunk_AllocateTempMemory( count * sizeof(client_t) );
		for ( i = 0, j = 0 ; i < oldMaxClients ; i++ ) {
			if ( svs.clients[i].state >= CS_CONNECTED ) {
				oldClients[j++] = svs.clients[i];
			}
		}

		// free old clients arrays
		Z_Free( svs.clients );
	}

	// allocate new clients
	svs.clients = Z_Malloc( sv_maxclients->integer * sizeof(client_t) );
	Com_Memset( svs.clients, 0, sv_maxclients->integer * sizeof(client_t) );

	if ( !firstTime ) {
		// copy the clients over
		Com_Memcpy( svs.clients + sv_democlients->integer, oldClients, count * sizeof(client_t) );

		// free the old clients on the hunk
		Hunk_FreeTempMemory( oldClients );
	}

	// allocate new snapshot entities
	if ( com_dedicated->integer ) {
		svs.numSnapshotEntities = sv_maxclients->integer * PACKET_BACKUP * 64;
	} else {
		// we don't need nearly as many when playing locally
		svs.numSnapshotEntities = sv_maxclients->integer * 4 * 64;
	}
}

/*
============
Cbuf_Execute
============
*/
void Cbuf_Execute (void)
{
	int		i;
	char	*text;
	char	line[MAX_CMD_LINE];
	int		quotes;

#ifdef _XBOX
	if(ClientManager::splitScreenMode == qtrue)
	{
		CM_START_LOOP();
		while (ClientManager::ActiveClient().cmd_text.cursize)
		{
			if ( ClientManager::ActiveClient().cmd_wait )	{
				// skip out while text still remains in buffer, leaving it
				// for next frame
				ClientManager::ActiveClient().cmd_wait--;
				break;
			}

			// find a \n or ; line break
			text = (char *)ClientManager::ActiveClient().cmd_text.data;

			quotes = 0;
			for (i=0 ; i< ClientManager::ActiveClient().cmd_text.cursize ; i++)
			{
				if (text[i] == '"')
					quotes++;
				if ( !(quotes&1) &&  text[i] == ';')
					break;	// don't break if inside a quoted string
				if (text[i] == '\n' || text[i] == '\r' )
					break;
			}
				
					
			memcpy (line, text, i);
			line[i] = 0;
		
			// delete the text from the command buffer and move remaining commands down
			// this is necessary because commands (exec) can insert data at the
			// beginning of the text buffer

			if (i == ClientManager::ActiveClient().cmd_text.cursize)
				ClientManager::ActiveClient().cmd_text.cursize = 0;
			else
			{
				i++;
				ClientManager::ActiveClient().cmd_text.cursize -= i;
				memmove (text, text+i, ClientManager::ActiveClient().cmd_text.cursize);
			}

			// execute the command line
			Cmd_ExecuteString (line);		
		}
		CM_END_LOOP();
	}
	else
	{
#endif

	while (cmd_text.cursize)
	{
		if ( cmd_wait )	{
			// skip out while text still remains in buffer, leaving it
			// for next frame
			cmd_wait--;
			break;
		}

		// find a \n or ; line break
		text = (char *)cmd_text.data;

		quotes = 0;
		for (i=0 ; i< cmd_text.cursize ; i++)
		{
			if (text[i] == '"')
				quotes++;
			if ( !(quotes&1) &&  text[i] == ';')
				break;	// don't break if inside a quoted string
			if (text[i] == '\n' || text[i] == '\r' )
				break;
		}

		if( i >= (MAX_CMD_LINE - 1)) {
			i = MAX_CMD_LINE - 1;
		}
				
		Com_Memcpy (line, text, i);
		line[i] = 0;
		
// delete the text from the command buffer and move remaining commands down
// this is necessary because commands (exec) can insert data at the
// beginning of the text buffer

		if (i == cmd_text.cursize)
//.........這裏部分代碼省略.........