ref: a96f72a41fed2a20c363865b5860fcbfeec7c90d
dir: /game/g_main.c/
/*
Copyright (C) 1997-2001 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.
*/
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "../q_shared.h"
game_locals_t game;
level_locals_t level;
game_import_t gi;
game_export_t globals;
spawn_temp_t st;
int sm_meat_index;
int snd_fry;
int meansOfDeath;
edict_t *g_edicts;
cvar_t *deathmatch;
cvar_t *coop;
cvar_t *dmflags;
cvar_t *skill;
cvar_t *fraglimit;
cvar_t *timelimit;
cvar_t *password;
cvar_t *spectator_password;
cvar_t *maxclients;
cvar_t *maxspectators;
cvar_t *maxentities;
cvar_t *g_select_empty;
cvar_t *dedicated;
cvar_t *filterban;
cvar_t *sv_maxvelocity;
cvar_t *sv_gravity;
cvar_t *sv_rollspeed;
cvar_t *sv_rollangle;
cvar_t *gun_x;
cvar_t *gun_y;
cvar_t *gun_z;
cvar_t *run_pitch;
cvar_t *run_roll;
cvar_t *bob_up;
cvar_t *bob_pitch;
cvar_t *bob_roll;
cvar_t *sv_cheats;
cvar_t *flood_msgs;
cvar_t *flood_persecond;
cvar_t *flood_waitdelay;
cvar_t *sv_maplist;
void SpawnEntities (char *mapname, char *entities, char *spawnpoint);
void ClientThink (edict_t *ent, usercmd_t *cmd);
qboolean ClientConnect (edict_t *ent, char *userinfo);
void ClientUserinfoChanged (edict_t *ent, char *userinfo);
void ClientDisconnect (edict_t *ent);
void ClientBegin (edict_t *ent);
void ClientCommand (edict_t *ent);
void RunEntity (edict_t *ent);
void WriteGame (char *filename, qboolean autosave);
void ReadGame (char *filename);
void WriteLevel (char *filename);
void ReadLevel (char *filename);
void InitGame (void);
void G_RunFrame (void);
//===================================================================
void ShutdownGame (void)
{
gi.dprintf ("==== ShutdownGame ====\n");
gi.FreeTags (TAG_LEVEL);
gi.FreeTags (TAG_GAME);
}
/*
=================
GetGameAPI
Returns a pointer to the structure with all entry points
and global variables
=================
*/
game_export_t *GetGameAPI (game_import_t *import)
{
gi = *import;
globals.apiversion = GAME_API_VERSION;
globals.Init = InitGame;
globals.Shutdown = ShutdownGame;
globals.SpawnEntities = SpawnEntities;
globals.WriteGame = WriteGame;
globals.ReadGame = ReadGame;
globals.WriteLevel = WriteLevel;
globals.ReadLevel = ReadLevel;
globals.ClientThink = ClientThink;
globals.ClientConnect = ClientConnect;
globals.ClientUserinfoChanged = ClientUserinfoChanged;
globals.ClientDisconnect = ClientDisconnect;
globals.ClientBegin = ClientBegin;
globals.ClientCommand = ClientCommand;
globals.RunFrame = G_RunFrame;
globals.ServerCommand = ServerCommand;
globals.edict_size = sizeof(edict_t);
return &globals;
}
//======================================================================
/*
=================
ClientEndServerFrames
=================
*/
void ClientEndServerFrames (void)
{
int i;
edict_t *ent;
// calc the player views now that all pushing
// and damage has been added
for (i=0 ; i<maxclients->value ; i++)
{
ent = g_edicts + 1 + i;
if (!ent->inuse || !ent->client)
continue;
ClientEndServerFrame (ent);
}
}
/*
=================
CreateTargetChangeLevel
Returns the created target changelevel
=================
*/
edict_t *CreateTargetChangeLevel(char *map)
{
edict_t *ent;
ent = G_Spawn ();
ent->classname = "target_changelevel";
Com_sprintf(level.nextmap, sizeof(level.nextmap), "%s", map);
ent->map = level.nextmap;
return ent;
}
/*
=================
EndDMLevel
The timelimit or fraglimit has been exceeded
=================
*/
void EndDMLevel (void)
{
edict_t *ent;
char *s, *t, *f;
static const char *seps = " ,\n\r";
// stay on same level flag
if ((int)dmflags->value & DF_SAME_LEVEL)
{
BeginIntermission (CreateTargetChangeLevel (level.mapname) );
return;
}
// see if it's in the map list
if (*sv_maplist->string) {
s = strdup(sv_maplist->string);
f = NULL;
t = strtok(s, seps);
while (t != NULL) {
if (Q_strcasecmp(t, level.mapname) == 0) {
// it's in the list, go to the next one
t = strtok(NULL, seps);
if (t == NULL) { // end of list, go to first one
if (f == NULL) // there isn't a first one, same level
BeginIntermission (CreateTargetChangeLevel (level.mapname) );
else
BeginIntermission (CreateTargetChangeLevel (f) );
} else
BeginIntermission (CreateTargetChangeLevel (t) );
free(s);
return;
}
if (!f)
f = t;
t = strtok(NULL, seps);
}
free(s);
}
if (level.nextmap[0]) // go to a specific map
BeginIntermission (CreateTargetChangeLevel (level.nextmap) );
else { // search for a changelevel
ent = G_Find (NULL, FOFS(classname), "target_changelevel");
if (!ent)
{ // the map designer didn't include a changelevel,
// so create a fake ent that goes back to the same level
BeginIntermission (CreateTargetChangeLevel (level.mapname) );
return;
}
BeginIntermission (ent);
}
}
/*
=================
CheckDMRules
=================
*/
void CheckDMRules (void)
{
int i;
gclient_t *cl;
if (level.intermissiontime)
return;
if (!deathmatch->value)
return;
if (timelimit->value)
{
if (level.time >= timelimit->value*60)
{
gi.bprintf (PRINT_HIGH, "Timelimit hit.\n");
EndDMLevel ();
return;
}
}
if (fraglimit->value)
{
for (i=0 ; i<maxclients->value ; i++)
{
cl = game.clients + i;
if (!g_edicts[i+1].inuse)
continue;
if (cl->resp.score >= fraglimit->value)
{
gi.bprintf (PRINT_HIGH, "Fraglimit hit.\n");
EndDMLevel ();
return;
}
}
}
}
/*
=============
ExitLevel
=============
*/
void ExitLevel (void)
{
int i;
edict_t *ent;
char command [256];
Com_sprintf (command, sizeof(command), "gamemap \"%s\"\n", level.changemap);
gi.AddCommandString (command);
level.changemap = NULL;
level.exitintermission = 0;
level.intermissiontime = 0;
ClientEndServerFrames ();
// clear some things before going to next level
for (i=0 ; i<maxclients->value ; i++)
{
ent = g_edicts + 1 + i;
if (!ent->inuse)
continue;
if (ent->health > ent->client->pers.max_health)
ent->health = ent->client->pers.max_health;
}
}
/*
================
G_RunFrame
Advances the world by 0.1 seconds
================
*/
void G_RunFrame (void)
{
int i;
edict_t *ent;
level.framenum++;
level.time = level.framenum*FRAMETIME;
// choose a client for monsters to target this frame
AI_SetSightClient ();
// exit intermissions
if (level.exitintermission)
{
ExitLevel ();
return;
}
//
// treat each object in turn
// even the world gets a chance to think
//
ent = &g_edicts[0];
for (i=0 ; i<globals.num_edicts ; i++, ent++)
{
if (!ent->inuse)
continue;
level.current_entity = ent;
VectorCopy (ent->s.origin, ent->s.old_origin);
// if the ground entity moved, make sure we are still on it
if ((ent->groundentity) && (ent->groundentity->linkcount != ent->groundentity_linkcount))
{
ent->groundentity = NULL;
if ( !(ent->flags & (FL_SWIM|FL_FLY)) && (ent->svflags & SVF_MONSTER) )
{
M_CheckGround (ent);
}
}
if (i > 0 && i <= maxclients->value)
{
ClientBeginServerFrame (ent);
continue;
}
G_RunEntity (ent);
}
// see if it is time to end a deathmatch
CheckDMRules ();
// build the playerstate_t structures for all players
ClientEndServerFrames ();
}