cl_main.c

quake1 dos源代码最新版本

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// cl_main.c  -- client main loop

#include "quakedef.h"

// we need to declare some mouse variables here, because the menu system
// references them even when on a unix system.

// these two are not intended to be set directly
cvar_t	*cl_name;
cvar_t	*cl_color;

cvar_t	*cl_shownet;	// can be 0, 1, or 2
cvar_t	*cl_nolerp;

cvar_t	*lookspring;
cvar_t	*lookstrafe;
cvar_t	*sensitivity;

cvar_t	*m_pitch;
cvar_t	*m_yaw;
cvar_t	*m_forward;
cvar_t	*m_side;
cvar_t	*m_look;	// 2001-12-16 M_LOOK cvar by Heffo/Maddes

cvar_t	*cl_showfps;	// 2001-11-31 FPS display by QuakeForge/Muff

cvar_t	*cl_compatibility;	// 2001-12-24 Keeping full backwards compatibility by Maddes

// 2001-09-20 Configurable entity limits by Maddes  start
cvar_t	*cl_entities_min;
cvar_t	*cl_entities_min_static;
cvar_t	*cl_entities_min_temp;
// 2001-09-20 Configurable entity limits by Maddes  end

client_static_t	cls;
client_state_t	cl;
// FIXME: put these on hunk?
efrag_t			cl_efrags[MAX_EFRAGS];
// 2001-09-20 Configurable entity limits by Maddes  start
/*
entity_t		cl_entities[MAX_EDICTS];
entity_t		cl_static_entities[MAX_STATIC_ENTITIES];
*/
entity_t		*cl_entities;
entity_t		*cl_static_entities;
// 2001-09-20 Configurable entity limits by Maddes  end
lightstyle_t	cl_lightstyle[MAX_LIGHTSTYLES];
dlight_t		cl_dlights[MAX_DLIGHTS];

int				cl_numvisedicts;
entity_t		*cl_visedicts[MAX_VISEDICTS];

/*
=====================
CL_ClearState

=====================
*/
void CL_ClearState (void)
{
	int			i;

	if (!sv.active)
		Host_ClearMemory ();

// wipe the entire cl structure
	memset (&cl, 0, sizeof(cl));

	SZ_Clear (&cls.message);

// clear other arrays
	memset (cl_efrags, 0, sizeof(cl_efrags));
//	memset (cl_entities, 0, sizeof(cl_entities));	// 2001-09-20 Configurable entity limits by Maddes
	memset (cl_dlights, 0, sizeof(cl_dlights));
	memset (cl_lightstyle, 0, sizeof(cl_lightstyle));
//	memset (cl_temp_entities, 0, sizeof(cl_temp_entities));	// 2001-09-20 Configurable entity limits by Maddes
	memset (cl_beams, 0, sizeof(cl_beams));

//
// allocate the efrags and chain together into a free list
//
	cl.free_efrags = cl_efrags;
	for (i=0 ; i<MAX_EFRAGS-1 ; i++)
		cl.free_efrags[i].entnext = &cl.free_efrags[i+1];
	cl.free_efrags[i].entnext = NULL;
}

/*
=====================
CL_Disconnect

Sends a disconnect message to the server
This is also called on Host_Error, so it shouldn't cause any errors
=====================
*/
void CL_Disconnect (void)
{
// stop sounds (especially looping!)
	S_StopAllSounds (true);

// bring the console down and fade the colors back to normal
//	SCR_BringDownConsole ();

// if running a local server, shut it down
	if (cls.demoplayback)
		CL_StopPlayback ();
	else if (cls.state == ca_connected)
	{
		if (cls.demorecording)
			CL_Stop_f ();

		Con_DPrintf ("Sending clc_disconnect\n");
		SZ_Clear (&cls.message);
		MSG_WriteByte (&cls.message, clc_disconnect);
		NET_SendUnreliableMessage (cls.netcon, &cls.message);
		SZ_Clear (&cls.message);
		NET_Close (cls.netcon);

		cls.state = ca_disconnected;
		if (sv.active)
			Host_ShutdownServer(false);
	}

	cls.demoplayback = cls.timedemo = false;
	cls.signon = 0;
}

void CL_Disconnect_f (void)
{
	CL_Disconnect ();
	if (sv.active)
		Host_ShutdownServer (false);
}




/*
=====================
CL_EstablishConnection

Host should be either "local" or a net address to be passed on
=====================
*/
void CL_EstablishConnection (char *host)
{
	if (cls.state == ca_dedicated)
		return;

	if (cls.demoplayback)
		return;

	CL_Disconnect ();

	cls.netcon = NET_Connect (host);
	if (!cls.netcon)
		Host_Error ("CL_Connect: connect failed");
	Con_DPrintf ("CL_EstablishConnection: connected to %s\n", host);

	cls.demonum = -1;			// not in the demo loop now
	cls.state = ca_connected;
	cls.signon = 0;				// need all the signon messages before playing
}

/*
=====================
CL_SignonReply

An svc_signonnum has been received, perform a client side setup
=====================
*/
void CL_SignonReply (void)
{
	char 	str[8192];

	Con_DPrintf ("CL_SignonReply: %i\n", cls.signon);

	switch (cls.signon)
	{
	case 1:
// 2000-04-30 NVS HANDSHAKE SRV<->CL by Maddes  start
		if (!sv.active)
		{
			Cvar_Set(nvs_current_ssvc, "0");
		}
		Cvar_Set(nvs_current_csvc, "0");
		Cvar_Set(nvs_current_cclc, "0");
// 2001-12-24 Keeping full backwards compatibility by Maddes  start
		if (!(cl_compatibility->value))	// request, unlike the original Quake executable
		{
// 2001-12-24 Keeping full backwards compatibility by Maddes  end
			MSG_WriteByte (&cls.message, clc_stringcmd);
			MSG_WriteString (&cls.message, va("nvs_request %1.2f\n", nvs_current_cclc->maxvalue));
		}	// 2001-12-24 Keeping full backwards compatibility by Maddes
// 2000-04-30 NVS HANDSHAKE SRV<->CL by Maddes  end

// 2001-09-20 Configurable limits by Maddes  start
// 2001-09-20 Configurable entity limits by Maddes  start
		cl.max_edicts = 0;
		cl.max_static_edicts = 0;
		cl.max_temp_edicts = 0;
		cl_entities = NULL;
		cl_static_entities = NULL;
		cl_temp_entities = NULL;
// 2001-09-20 Configurable entity limits by Maddes  end
// 2001-12-24 Keeping full backwards compatibility by Maddes  start
		if (!(cl_compatibility->value))	// request, unlike the original Quake executable
		{
// 2001-12-24 Keeping full backwards compatibility by Maddes  end
			MSG_WriteByte (&cls.message, clc_stringcmd);
			MSG_WriteString (&cls.message, "limit_request\n");
		}	// 2001-12-24 Keeping full backwards compatibility by Maddes
// 2001-09-20 Configurable limits by Maddes  end

		MSG_WriteByte (&cls.message, clc_stringcmd);
		MSG_WriteString (&cls.message, "prespawn\n");
		break;

	case 2:
		MSG_WriteByte (&cls.message, clc_stringcmd);
		MSG_WriteString (&cls.message, va("name \"%s\"\n", cl_name->string));

		MSG_WriteByte (&cls.message, clc_stringcmd);
		MSG_WriteString (&cls.message, va("color %i %i\n", ((int)cl_color->value)>>4, ((int)cl_color->value)&15));

		MSG_WriteByte (&cls.message, clc_stringcmd);
		sprintf (str, "spawn %s\n", cls.spawnparms);
		MSG_WriteString (&cls.message, str);
		break;

	case 3:
		MSG_WriteByte (&cls.message, clc_stringcmd);
		MSG_WriteString (&cls.message, "begin\n");
		Cache_Report ();		// print remaining memory
		break;

	case 4:
		SCR_EndLoadingPlaque ();		// allow normal screen updates
		break;
	}
}

/*
=====================
CL_NextDemo

Called to play the next demo in the demo loop
=====================
*/
void CL_NextDemo (void)
{
	char	str[1024];

	if (cls.demonum == -1)
		return;		// don't play demos

	SCR_BeginLoadingPlaque ();

	if (!cls.demos[cls.demonum][0] || cls.demonum == MAX_DEMOS)
	{
		cls.demonum = 0;
		if (!cls.demos[cls.demonum][0])
		{
			Con_Printf ("No demos listed with startdemos\n");
			cls.demonum = -1;
			return;
		}
	}

	sprintf (str,"playdemo %s\n", cls.demos[cls.demonum]);
	Cbuf_InsertText (str);
	cls.demonum++;
}

/*
==============
CL_PrintEntities_f
==============
*/
void CL_PrintEntities_f (void)
{
	entity_t	*ent;
	int			i;

	for (i=0,ent=cl_entities ; i<cl.num_entities ; i++,ent++)
	{
		Con_Printf ("%3i:",i);
		if (!ent->model)
		{
			Con_Printf ("EMPTY\n");
			continue;
		}
		Con_Printf ("%s:%2i  (%5.1f,%5.1f,%5.1f) [%5.1f %5.1f %5.1f]\n"
		,ent->model->name,ent->frame, ent->origin[0], ent->origin[1], ent->origin[2], ent->angles[0], ent->angles[1], ent->angles[2]);
	}
}


/*
===============
SetPal

Debugging tool, just flashes the screen
===============
*/
void SetPal (int i)
{
#if 0
	static int old;
	byte	pal[768];
	int		c;

	if (i == old)
		return;
	old = i;

	if (i==0)
		VID_SetPalette (host_basepal);
	else if (i==1)
	{
		for (c=0 ; c<768 ; c+=3)
		{
			pal[c] = 0;
			pal[c+1] = 255;
			pal[c+2] = 0;
		}
		VID_SetPalette (pal);
	}
	else
	{
		for (c=0 ; c<768 ; c+=3)
		{
			pal[c] = 0;
			pal[c+1] = 0;
			pal[c+2] = 255;
		}
		VID_SetPalette (pal);
	}
#endif
}

/*
===============
CL_AllocDlight

===============
*/
dlight_t *CL_AllocDlight (int key)
{
	int		i;
	dlight_t	*dl;

// first look for an exact key match
	if (key)
	{
		dl = cl_dlights;
		for (i=0 ; i<MAX_DLIGHTS ; i++, dl++)
		{
			if (dl->key == key)
			{
				memset (dl, 0, sizeof(*dl));
				dl->key = key;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  start
				dl->color[0] = dl->color[1] = dl->color[2] = 1.0f;
				dl->flashcolor[0] = 1.0f;
				dl->flashcolor[1] = 0.5f;
				dl->flashcolor[2] = 0.0f;
				dl->flashcolor[3] = 0.2f;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  end
				return dl;
			}
		}
	}

// then look for anything else
	dl = cl_dlights;
	for (i=0 ; i<MAX_DLIGHTS ; i++, dl++)
	{
		if (dl->die < cl.time)
		{
			memset (dl, 0, sizeof(*dl));
			dl->key = key;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  start
			dl->color[0] = dl->color[1] = dl->color[2] = 1.0f;
			dl->flashcolor[0] = 1.0f;
			dl->flashcolor[1] = 0.5f;
			dl->flashcolor[2] = 0.0f;
			dl->flashcolor[3] = 0.2f;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  end
			return dl;
		}
	}

	dl = &cl_dlights[0];
	memset (dl, 0, sizeof(*dl));
	dl->key = key;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  start
	dl->color[0] = dl->color[1] = dl->color[2] = 1.0f;
	dl->flashcolor[0] = 1.0f;
	dl->flashcolor[1] = 0.5f;
	dl->flashcolor[2] = 0.0f;
	dl->flashcolor[3] = 0.2f;
// 2001-09-11 Colored lightning by LordHavoc/Sarcazm/Maddes  end
	return dl;
}


/*
===============
CL_DecayLights

===============
*/
void CL_DecayLights (void)
{
	int			i;
	dlight_t	*dl;
	float		time;

	time = cl.time - cl.oldtime;

	dl = cl_dlights;
	for (i=0 ; i<MAX_DLIGHTS ; i++, dl++)
	{
		if (dl->die < cl.time || !dl->radius)
			continue;

		dl->radius -= time*dl->decay;
		if (dl->radius < 0)
			dl->radius = 0;
	}
}


/*
===============
CL_LerpPoint