cl_ents.c

著名游戏quake2原代码最新版本(vc6.0可以编译的)

{
	int			flags;
	player_state_t	*state;
	int			i;
	int			statbits;

	state = &newframe->playerstate;

	// clear to old value before delta parsing
	if (oldframe)
		*state = oldframe->playerstate;
	else
		memset (state, 0, sizeof(*state));

	flags = MSG_ReadShort (&net_message);

	//
	// parse the pmove_state_t
	//
	if (flags & PS_M_TYPE)
		state->pmove.pm_type = MSG_ReadByte (&net_message);

	if (flags & PS_M_ORIGIN)
	{
		state->pmove.origin[0] = MSG_ReadShort (&net_message);
		state->pmove.origin[1] = MSG_ReadShort (&net_message);
		state->pmove.origin[2] = MSG_ReadShort (&net_message);
	}

	if (flags & PS_M_VELOCITY)
	{
		state->pmove.velocity[0] = MSG_ReadShort (&net_message);
		state->pmove.velocity[1] = MSG_ReadShort (&net_message);
		state->pmove.velocity[2] = MSG_ReadShort (&net_message);
	}

	if (flags & PS_M_TIME)
		state->pmove.pm_time = MSG_ReadByte (&net_message);

	if (flags & PS_M_FLAGS)
		state->pmove.pm_flags = MSG_ReadByte (&net_message);

	if (flags & PS_M_GRAVITY)
		state->pmove.gravity = MSG_ReadShort (&net_message);

	if (flags & PS_M_DELTA_ANGLES)
	{
		state->pmove.delta_angles[0] = MSG_ReadShort (&net_message);
		state->pmove.delta_angles[1] = MSG_ReadShort (&net_message);
		state->pmove.delta_angles[2] = MSG_ReadShort (&net_message);
	}

	if (cl.attractloop)
		state->pmove.pm_type = PM_FREEZE;		// demo playback

	//
	// parse the rest of the player_state_t
	//
	if (flags & PS_VIEWOFFSET)
	{
		state->viewoffset[0] = MSG_ReadChar (&net_message) * 0.25;
		state->viewoffset[1] = MSG_ReadChar (&net_message) * 0.25;
		state->viewoffset[2] = MSG_ReadChar (&net_message) * 0.25;
	}

	if (flags & PS_VIEWANGLES)
	{
		state->viewangles[0] = MSG_ReadAngle16 (&net_message);
		state->viewangles[1] = MSG_ReadAngle16 (&net_message);
		state->viewangles[2] = MSG_ReadAngle16 (&net_message);
	}

	if (flags & PS_KICKANGLES)
	{
		state->kick_angles[0] = MSG_ReadChar (&net_message) * 0.25;
		state->kick_angles[1] = MSG_ReadChar (&net_message) * 0.25;
		state->kick_angles[2] = MSG_ReadChar (&net_message) * 0.25;
	}

	if (flags & PS_WEAPONINDEX)
	{
		state->gunindex = MSG_ReadByte (&net_message);
	}

	if (flags & PS_WEAPONFRAME)
	{
		state->gunframe = MSG_ReadByte (&net_message);
		state->gunoffset[0] = MSG_ReadChar (&net_message)*0.25;
		state->gunoffset[1] = MSG_ReadChar (&net_message)*0.25;
		state->gunoffset[2] = MSG_ReadChar (&net_message)*0.25;
		state->gunangles[0] = MSG_ReadChar (&net_message)*0.25;
		state->gunangles[1] = MSG_ReadChar (&net_message)*0.25;
		state->gunangles[2] = MSG_ReadChar (&net_message)*0.25;
	}

	if (flags & PS_BLEND)
	{
		state->blend[0] = MSG_ReadByte (&net_message)/255.0;
		state->blend[1] = MSG_ReadByte (&net_message)/255.0;
		state->blend[2] = MSG_ReadByte (&net_message)/255.0;
		state->blend[3] = MSG_ReadByte (&net_message)/255.0;
	}

	if (flags & PS_FOV)
		state->fov = MSG_ReadByte (&net_message);

	if (flags & PS_RDFLAGS)
		state->rdflags = MSG_ReadByte (&net_message);

	// parse stats
	statbits = MSG_ReadLong (&net_message);
	for (i=0 ; i<MAX_STATS ; i++)
		if (statbits & (1<<i) )
			state->stats[i] = MSG_ReadShort(&net_message);
}


/*
==================
CL_FireEntityEvents

==================
*/
void CL_FireEntityEvents (frame_t *frame)
{
	entity_state_t		*s1;
	int					pnum, num;

	for (pnum = 0 ; pnum<frame->num_entities ; pnum++)
	{
		num = (frame->parse_entities + pnum)&(MAX_PARSE_ENTITIES-1);
		s1 = &cl_parse_entities[num];
		if (s1->event)
			CL_EntityEvent (s1);

		// EF_TELEPORTER acts like an event, but is not cleared each frame
		if (s1->effects & EF_TELEPORTER)
			CL_TeleporterParticles (s1);
	}
}


/*
================
CL_ParseFrame
================
*/
void CL_ParseFrame (void)
{
	int			cmd;
	int			len;
	frame_t		*old;

	memset (&cl.frame, 0, sizeof(cl.frame));

#if 0
	CL_ClearProjectiles(); // clear projectiles for new frame
#endif

	cl.frame.serverframe = MSG_ReadLong (&net_message);
	cl.frame.deltaframe = MSG_ReadLong (&net_message);
	cl.frame.servertime = cl.frame.serverframe*100;

	// BIG HACK to let old demos continue to work
	if (cls.serverProtocol != 26)
		cl.surpressCount = MSG_ReadByte (&net_message);

	if (cl_shownet->value == 3)
		Com_Printf ("   frame:%i  delta:%i\n", cl.frame.serverframe,
		cl.frame.deltaframe);

	// If the frame is delta compressed from data that we
	// no longer have available, we must suck up the rest of
	// the frame, but not use it, then ask for a non-compressed
	// message 
	if (cl.frame.deltaframe <= 0)
	{
		cl.frame.valid = true;		// uncompressed frame
		old = NULL;
		cls.demowaiting = false;	// we can start recording now
	}
	else
	{
		old = &cl.frames[cl.frame.deltaframe & UPDATE_MASK];
		if (!old->valid)
		{	// should never happen
			Com_Printf ("Delta from invalid frame (not supposed to happen!).\n");
		}
		if (old->serverframe != cl.frame.deltaframe)
		{	// The frame that the server did the delta from
			// is too old, so we can't reconstruct it properly.
			Com_Printf ("Delta frame too old.\n");
		}
		else if (cl.parse_entities - old->parse_entities > MAX_PARSE_ENTITIES-128)
		{
			Com_Printf ("Delta parse_entities too old.\n");
		}
		else
			cl.frame.valid = true;	// valid delta parse
	}

	// clamp time 
	if (cl.time > cl.frame.servertime)
		cl.time = cl.frame.servertime;
	else if (cl.time < cl.frame.servertime - 100)
		cl.time = cl.frame.servertime - 100;

	// read areabits
	len = MSG_ReadByte (&net_message);
	MSG_ReadData (&net_message, &cl.frame.areabits, len);

	// read playerinfo
	cmd = MSG_ReadByte (&net_message);
	SHOWNET(svc_strings[cmd]);
	if (cmd != svc_playerinfo)
		Com_Error (ERR_DROP, "CL_ParseFrame: not playerinfo");
	CL_ParsePlayerstate (old, &cl.frame);

	// read packet entities
	cmd = MSG_ReadByte (&net_message);
	SHOWNET(svc_strings[cmd]);
	if (cmd != svc_packetentities)
		Com_Error (ERR_DROP, "CL_ParseFrame: not packetentities");
	CL_ParsePacketEntities (old, &cl.frame);

#if 0
	if (cmd == svc_packetentities2)
		CL_ParseProjectiles();
#endif

	// save the frame off in the backup array for later delta comparisons
	cl.frames[cl.frame.serverframe & UPDATE_MASK] = cl.frame;

	if (cl.frame.valid)
	{
		// getting a valid frame message ends the connection process
		if (cls.state != ca_active)
		{
			cls.state = ca_active;
			cl.force_refdef = true;
			cl.predicted_origin[0] = cl.frame.playerstate.pmove.origin[0]*0.125;
			cl.predicted_origin[1] = cl.frame.playerstate.pmove.origin[1]*0.125;
			cl.predicted_origin[2] = cl.frame.playerstate.pmove.origin[2]*0.125;
			VectorCopy (cl.frame.playerstate.viewangles, cl.predicted_angles);
			if (cls.disable_servercount != cl.servercount
				&& cl.refresh_prepped)
				SCR_EndLoadingPlaque ();	// get rid of loading plaque
		}
		cl.sound_prepped = true;	// can start mixing ambient sounds
	
		// fire entity events
		CL_FireEntityEvents (&cl.frame);
		CL_CheckPredictionError ();
	}
}

/*
==========================================================================

INTERPOLATE BETWEEN FRAMES TO GET RENDERING PARMS

==========================================================================
*/

struct model_s *S_RegisterSexedModel (entity_state_t *ent, char *base)
{
	int				n;
	char			*p;
	struct model_s	*mdl;
	char			model[MAX_QPATH];
	char			buffer[MAX_QPATH];

	// determine what model the client is using
	model[0] = 0;
	n = CS_PLAYERSKINS + ent->number - 1;
	if (cl.configstrings[n][0])
	{
		p = strchr(cl.configstrings[n], '\\');
		if (p)
		{
			p += 1;
			strcpy(model, p);
			p = strchr(model, '/');
			if (p)
				*p = 0;
		}
	}
	// if we can't figure it out, they're male
	if (!model[0])
		strcpy(model, "male");

	Com_sprintf (buffer, sizeof(buffer), "players/%s/%s", model, base+1);
	mdl = re.RegisterModel(buffer);
	if (!mdl) {
		// not found, try default weapon model
		Com_sprintf (buffer, sizeof(buffer), "players/%s/weapon.md2", model);
		mdl = re.RegisterModel(buffer);
		if (!mdl) {
			// no, revert to the male model
			Com_sprintf (buffer, sizeof(buffer), "players/%s/%s", "male", base+1);
			mdl = re.RegisterModel(buffer);
			if (!mdl) {
				// last try, default male weapon.md2
				Com_sprintf (buffer, sizeof(buffer), "players/male/weapon.md2");
				mdl = re.RegisterModel(buffer);
			}
		} 
	}

	return mdl;
}

// PMM - used in shell code 
extern int Developer_searchpath (int who);
// pmm
/*
===============
CL_AddPacketEntities

===============
*/
void CL_AddPacketEntities (frame_t *frame)
{
	entity_t			ent;
	entity_state_t		*s1;
	float				autorotate;
	int					i;
	int					pnum;
	centity_t			*cent;
	int					autoanim;
	clientinfo_t		*ci;
	unsigned int		effects, renderfx;

	// bonus items rotate at a fixed rate
	autorotate = anglemod(cl.time/10);

	// brush models can auto animate their frames
	autoanim = 2*cl.time/1000;

	memset (&ent, 0, sizeof(ent));

	for (pnum = 0 ; pnum<frame->num_entities ; pnum++)
	{
		s1 = &cl_parse_entities[(frame->parse_entities+pnum)&(MAX_PARSE_ENTITIES-1)];

		cent = &cl_entities[s1->number];

		effects = s1->effects;
		renderfx = s1->renderfx;

			// set frame
		if (effects & EF_ANIM01)
			ent.frame = autoanim & 1;
		else if (effects & EF_ANIM23)
			ent.frame = 2 + (autoanim & 1);
		else if (effects & EF_ANIM_ALL)
			ent.frame = autoanim;
		else if (effects & EF_ANIM_ALLFAST)
			ent.frame = cl.time / 100;
		else
			ent.frame = s1->frame;

		// quad and pent can do different things on client
		if (effects & EF_PENT)
		{
			effects &= ~EF_PENT;
			effects |= EF_COLOR_SHELL;
			renderfx |= RF_SHELL_RED;
		}

		if (effects & EF_QUAD)
		{
			effects &= ~EF_QUAD;
			effects |= EF_COLOR_SHELL;
			renderfx |= RF_SHELL_BLUE;
		}
//======
// PMM
		if (effects & EF_DOUBLE)
		{
			effects &= ~EF_DOUBLE;
			effects |= EF_COLOR_SHELL;
			renderfx |= RF_SHELL_DOUBLE;
		}

		if (effects & EF_HALF_DAMAGE)
		{
			effects &= ~EF_HALF_DAMAGE;
			effects |= EF_COLOR_SHELL;
			renderfx |= RF_SHELL_HALF_DAM;
		}
// pmm
//======
		ent.oldframe = cent->prev.frame;
		ent.backlerp = 1.0 - cl.lerpfrac;

		if (renderfx & (RF_FRAMELERP|RF_BEAM))
		{	// step origin discretely, because the frames
			// do the animation properly
			VectorCopy (cent->current.origin, ent.origin);
			VectorCopy (cent->current.old_origin, ent.oldorigin);
		}
		else
		{	// interpolate origin
			for (i=0 ; i<3 ; i++)
			{
				ent.origin[i] = ent.oldorigin[i] = cent->prev.origin[i] + cl.lerpfrac * 
					(cent->current.origin[i] - cent->prev.origin[i]);
			}
		}

		// create a new entity
	
		// tweak the color of beams
		if ( renderfx & RF_BEAM )
		{	// the four beam colors are encoded in 32 bits of skinnum (hack)
			ent.alpha = 0.30;
			ent.skinnum = (s1->skinnum >> ((rand() % 4)*8)) & 0xff;
			ent.model = NULL;
		}
		else
		{
			// set skin
			if (s1->modelindex == 255)
			{	// use custom player skin
				ent.skinnum = 0;
				ci = &cl.clientinfo[s1->skinnum & 0xff];
				ent.skin = ci->skin;
				ent.model = ci->model;
				if (!ent.skin || !ent.model)
				{
					ent.skin = cl.baseclientinfo.skin;
					ent.model = cl.baseclientinfo.model;
				}

//============
//PGM
				if (renderfx & RF_USE_DISGUISE)
				{
					if(!strncmp((char *)ent.skin, "players/male", 12))
					{
						ent.skin = re.RegisterSkin ("players/male/disguise.pcx");
						ent.model = re.RegisterModel ("players/male/tris.md2");
					}
					else if(!strncmp((char *)ent.skin, "players/female", 14))
					{
						ent.skin = re.RegisterSkin ("players/female/disguise.pcx");
						ent.model = re.RegisterModel ("players/female/tris.md2");
					}
					else if(!strncmp((char *)ent.skin, "players/cyborg", 14))
					{
						ent.skin = re.RegisterSkin ("players/cyborg/disguise.pcx");
						ent.model = re.RegisterModel ("players/cyborg/tris.md2");
					}
				}
//PGM
//============
			}
			else
			{
				ent.skinnum = s1->skinnum;
				ent.skin = NULL;
				ent.model = cl.model_draw[s1->modelindex];
			}
		}

		// only used for black hole model right now, FIXME: do better
		if (renderfx == RF_TRANSLUCENT)
			ent.alpha = 0.70;

		// render effects (fullbright, translucent, etc)
		if ((effects & EF_COLOR_SHELL))
			ent.flags = 0;	// renderfx go on color shell entity
		else
			ent.flags = renderfx;

		// calculate angles
		if (effects & EF_ROTATE)
		{	// some bonus items auto-rotate
			ent.angles[0] = 0;
			ent.angles[1] = autorotate;
			ent.angles[2] = 0;
		}
		// RAFAEL
		else if (effects & EF_SPINNINGLIGHTS)
		{
			ent.angles[0] = 0;
			ent.angles[1] = anglemod(cl.time/2) + s1->angles[1];
			ent.angles[2] = 180;
			{
				vec3_t forward;
				vec3_t start;

				AngleVectors (ent.angles, forward, NULL, NULL);
				VectorMA (ent.origin, 64, forward, start);
				V_AddLight (start, 100, 1, 0, 0);
			}
		}
		else
		{	// interpolate angles
			float	a1, a2;

			for (i=0 ; i<3 ; i++)
			{
				a1 = cent->current.angles[i];
				a2 = cent->prev.angles[i];
				ent.angles[i] = LerpAngle (a2, a1, cl.lerpfrac);
			}
		}

		if (s1->number == cl.playernum+1)
		{
			ent.flags |= RF_VIEWERMODEL;	// only draw from mirrors
			// FIXME: still pass to refresh