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G_GAME.C
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// G_game.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "DoomDef.h"
#include "P_local.h"
#include "soundst.h"
// Macros
#define SVG_RAM 0
#define SVG_FILE 1
#define SAVE_GAME_TERMINATOR 0x1d
#define AM_STARTKEY 9
// Functions
boolean G_CheckDemoStatus (void);
void G_ReadDemoTiccmd (ticcmd_t *cmd);
void G_WriteDemoTiccmd (ticcmd_t *cmd);
void G_PlayerReborn (int player);
void G_InitNew (skill_t skill, int episode, int map);
void G_DoReborn (int playernum);
void G_DoLoadLevel (void);
void G_DoNewGame (void);
void G_DoLoadGame (void);
void G_DoPlayDemo (void);
void G_DoCompleted (void);
void G_DoVictory (void);
void G_DoWorldDone (void);
void G_DoSaveGame (void);
void D_PageTicker(void);
void D_AdvanceDemo(void);
struct
{
mobjtype_t type;
int speed[2];
} MonsterMissileInfo[] =
{
{ MT_IMPBALL, 10, 20 },
{ MT_MUMMYFX1, 9, 18 },
{ MT_KNIGHTAXE, 9, 18 },
{ MT_REDAXE, 9, 18 },
{ MT_BEASTBALL, 12, 20 },
{ MT_WIZFX1, 18, 24 },
{ MT_SNAKEPRO_A, 14, 20 },
{ MT_SNAKEPRO_B, 14, 20 },
{ MT_HEADFX1, 13, 20 },
{ MT_HEADFX3, 10, 18 },
{ MT_MNTRFX1, 20, 26 },
{ MT_MNTRFX2, 14, 20 },
{ MT_SRCRFX1, 20, 28 },
{ MT_SOR2FX1, 20, 28 },
{ -1, -1, -1 } // Terminator
};
FILE *SaveGameFP;
int SaveGameType;
gameaction_t gameaction;
gamestate_t gamestate;
skill_t gameskill;
boolean respawnmonsters;
int gameepisode;
int gamemap;
int prevmap;
boolean paused;
boolean sendpause; // send a pause event next tic
boolean sendsave; // send a save event next tic
boolean usergame; // ok to save / end game
boolean timingdemo; // if true, exit with report on completion
int starttime; // for comparative timing purposes
boolean viewactive;
boolean deathmatch; // only if started as net death
boolean netgame; // only true if packets are broadcast
boolean playeringame[MAXPLAYERS];
player_t players[MAXPLAYERS];
int consoleplayer; // player taking events and displaying
int displayplayer; // view being displayed
int gametic;
int levelstarttic; // gametic at level start
int totalkills, totalitems, totalsecret; // for intermission
char demoname[32];
boolean demorecording;
boolean demoplayback;
byte *demobuffer, *demo_p;
boolean singledemo; // quit after playing a demo from cmdline
boolean precache = true; // if true, load all graphics at start
short consistancy[MAXPLAYERS][BACKUPTICS];
byte *savebuffer, *save_p;
//
// controls (have defaults)
//
int key_right, key_left, key_up, key_down;
int key_strafeleft, key_straferight;
int key_fire, key_use, key_strafe, key_speed;
int key_flyup, key_flydown, key_flycenter;
int key_lookup, key_lookdown, key_lookcenter;
int key_invleft, key_invright, key_useartifact;
int mousebfire;
int mousebstrafe;
int mousebforward;
int joybfire;
int joybstrafe;
int joybuse;
int joybspeed;
#define MAXPLMOVE 0x32
fixed_t forwardmove[2] = {0x19, 0x32};
fixed_t sidemove[2] = {0x18, 0x28};
fixed_t angleturn[3] = {640, 1280, 320}; // + slow turn
#define SLOWTURNTICS 6
#define NUMKEYS 256
boolean gamekeydown[NUMKEYS];
int turnheld; // for accelerative turning
int lookheld;
boolean mousearray[4];
boolean *mousebuttons = &mousearray[1];
// allow [-1]
int mousex, mousey; // mouse values are used once
int dclicktime, dclickstate, dclicks;
int dclicktime2, dclickstate2, dclicks2;
int joyxmove, joyymove; // joystick values are repeated
boolean joyarray[5];
boolean *joybuttons = &joyarray[1]; // allow [-1]
int savegameslot;
char savedescription[32];
int inventoryTics;
#ifdef __WATCOMC__
extern externdata_t *i_ExternData;
#endif
//=============================================================================
// Not used - ripped out for Heretic
/*
int G_CmdChecksum(ticcmd_t *cmd)
{
int i;
int sum;
sum = 0;
for(i = 0; i < sizeof(*cmd)/4-1; i++)
{
sum += ((int *)cmd)[i];
}
return(sum);
}
*/
/*
====================
=
= G_BuildTiccmd
=
= Builds a ticcmd from all of the available inputs or reads it from the
= demo buffer.
= If recording a demo, write it out
====================
*/
extern boolean inventory;
extern int curpos;
extern int inv_ptr;
extern int isCyberPresent; // is CyberMan present?
boolean usearti = true;
void I_ReadCyberCmd (ticcmd_t *cmd);
void G_BuildTiccmd (ticcmd_t *cmd)
{
int i;
boolean strafe, bstrafe;
int speed, tspeed, lspeed;
int forward, side;
int look, arti;
int flyheight;
extern boolean noartiskip;
#ifdef __WATCOMC__
int angleDelta;
static int oldAngle;
extern int newViewAngleOff;
static int externInvKey;
extern boolean automapactive;
event_t ev;
#endif
memset (cmd,0,sizeof(*cmd));
//cmd->consistancy =
// consistancy[consoleplayer][(maketic*ticdup)%BACKUPTICS];
cmd->consistancy =
consistancy[consoleplayer][maketic%BACKUPTICS];
if (isCyberPresent)
I_ReadCyberCmd (cmd);
//printf ("cons: %i\n",cmd->consistancy);
strafe = gamekeydown[key_strafe] || mousebuttons[mousebstrafe]
|| joybuttons[joybstrafe];
speed = gamekeydown[key_speed] || joybuttons[joybspeed]
|| joybuttons[joybspeed];
#ifdef __WATCOMC__
if(useexterndriver)
{
speed |= (i_ExternData->buttons&EBT_SPEED);
strafe |= (i_ExternData->buttons&EBT_STRAFE);
}
#endif
forward = side = look = arti = flyheight = 0;
//
// use two stage accelerative turning on the keyboard and joystick
//
if (joyxmove < 0 || joyxmove > 0
|| gamekeydown[key_right] || gamekeydown[key_left])
turnheld += ticdup;
else
turnheld = 0;
if (turnheld < SLOWTURNTICS)
tspeed = 2; // slow turn
else
tspeed = speed;
if(gamekeydown[key_lookdown] || gamekeydown[key_lookup])
{
lookheld += ticdup;
}
else
{
lookheld = 0;
}
if(lookheld < SLOWTURNTICS)
{
lspeed = 1;
}
else
{
lspeed = 2;
}
//
// let movement keys cancel each other out
//
if(strafe)
{
if (gamekeydown[key_right])
side += sidemove[speed];
if (gamekeydown[key_left])
side -= sidemove[speed];
if (joyxmove > 0)
side += sidemove[speed];
if (joyxmove < 0)
side -= sidemove[speed];
}
else
{
if (gamekeydown[key_right])
cmd->angleturn -= angleturn[tspeed];
if (gamekeydown[key_left])
cmd->angleturn += angleturn[tspeed];
if (joyxmove > 0)
cmd->angleturn -= angleturn[tspeed];
if (joyxmove < 0)
cmd->angleturn += angleturn[tspeed];
}
if (gamekeydown[key_up])
forward += forwardmove[speed];
if (gamekeydown[key_down])
forward -= forwardmove[speed];
if (joyymove < 0)
forward += forwardmove[speed];
if (joyymove > 0)
forward -= forwardmove[speed];
if (gamekeydown[key_straferight])
side += sidemove[speed];
if (gamekeydown[key_strafeleft])
side -= sidemove[speed];
// Look up/down/center keys
if(gamekeydown[key_lookup])
{
look = lspeed;
}
if(gamekeydown[key_lookdown])
{
look = -lspeed;
}
#ifdef __WATCOMC__
if(gamekeydown[key_lookcenter] && !useexterndriver)
{
look = TOCENTER;
}
#else
if(gamekeydown[key_lookcenter])
{
look = TOCENTER;
}
#endif
#ifdef __WATCOMC__
if(useexterndriver && look != TOCENTER && (gamestate == GS_LEVEL ||
gamestate == GS_INTERMISSION))
{
if(i_ExternData->moveForward)
{
forward += i_ExternData->moveForward;
if(speed)
{
forward <<= 1;
}
}
if(i_ExternData->angleTurn)
{
if(strafe)
{
side += i_ExternData->angleTurn;
}
else
{
cmd->angleturn += i_ExternData->angleTurn;
}
}
if(i_ExternData->moveSideways)
{
side += i_ExternData->moveSideways;
if(speed)
{
side <<= 1;
}
}
if(i_ExternData->buttons&EBT_CENTERVIEW)
{
look = TOCENTER;
oldAngle = 0;
}
else if(i_ExternData->pitch)
{
angleDelta = i_ExternData->pitch-oldAngle;
if(abs(angleDelta) < 35)
{
look = angleDelta/5;
}
else
{
look = 7*(angleDelta > 0 ? 1 : -1);
}
if(look == TOCENTER)
{
look++;
}
oldAngle += look*5;
}
if(i_ExternData->flyDirection)
{
if(i_ExternData->flyDirection > 0)
{
flyheight = 5;
}
else
{
flyheight = -5;
}
}
if(abs(newViewAngleOff-i_ExternData->angleHead) < 3000)
{
newViewAngleOff = i_ExternData->angleHead;
}
if(i_ExternData->buttons&EBT_FIRE)
{
cmd->buttons |= BT_ATTACK;
}
if(i_ExternData->buttons&EBT_OPENDOOR)
{
cmd->buttons |= BT_USE;
}
if(i_ExternData->buttons&EBT_PAUSE)
{
cmd->buttons = BT_SPECIAL | BTS_PAUSE;
i_ExternData->buttons &= ~EBT_PAUSE;
}
if(externInvKey&EBT_USEARTIFACT)
{
ev.type = ev_keyup;
ev.data1 = key_useartifact;
D_PostEvent(&ev);
externInvKey &= ~EBT_USEARTIFACT;
}
else if(i_ExternData->buttons&EBT_USEARTIFACT)
{
externInvKey |= EBT_USEARTIFACT;
ev.type = ev_keydown;
ev.data1 = key_useartifact;
D_PostEvent(&ev);
}
if(externInvKey&EBT_INVENTORYRIGHT)
{
ev.type = ev_keyup;
ev.data1 = key_invright;
D_PostEvent(&ev);
externInvKey &= ~EBT_INVENTORYRIGHT;
}
else if(i_ExternData->buttons&EBT_INVENTORYRIGHT)
{
externInvKey |= EBT_INVENTORYRIGHT;
ev.type = ev_keydown;
ev.data1 = key_invright;
D_PostEvent(&ev);
}
if(externInvKey&EBT_INVENTORYLEFT)
{
ev.type = ev_keyup;
ev.data1 = key_invleft;
D_PostEvent(&ev);
externInvKey &= ~EBT_INVENTORYLEFT;
}
else if(i_ExternData->buttons&EBT_INVENTORYLEFT)
{
externInvKey |= EBT_INVENTORYLEFT;
ev.type = ev_keydown;
ev.data1 = key_invleft;
D_PostEvent(&ev);
}
if(i_ExternData->buttons&EBT_FLYDROP)
{
flyheight = TOCENTER;
}
if(gamestate == GS_LEVEL)
{
if(externInvKey&EBT_MAP)
{ // AutoMap
ev.type = ev_keyup;
ev.data1 = AM_STARTKEY;
D_PostEvent(&ev);
externInvKey &= ~EBT_MAP;
}
else if(i_ExternData->buttons&EBT_MAP)
{
externInvKey |= EBT_MAP;
ev.type = ev_keydown;
ev.data1 = AM_STARTKEY;
D_PostEvent(&ev);
}
}
#if 0
if((i = (i_ExternData->buttons>>EBT_WEAPONSHIFT)&EBT_WEAPONMASK) != 0)
{
cmd->buttons |= BT_CHANGE;
cmd->buttons |= (i-1)<<BT_WEAPONSHIFT;
}
#endif
if(i_ExternData->buttons&EBT_WEAPONCYCLE)
{
int curWeapon;
player_t *pl;
pl = &players[consoleplayer];
curWeapon = pl->readyweapon;
for(curWeapon = (curWeapon+1)&7; curWeapon != pl->readyweapon;
curWeapon = (curWeapon+1)&7)
{
if(pl->weaponowned[curWeapon])
{
if(curWeapon >= wp_goldwand && curWeapon <= wp_mace &&
!pl->ammo[wpnlev1info[curWeapon].ammo])
{ // weapon that requires ammo is empty
continue;
}
break;
}
}
cmd->buttons |= BT_CHANGE;
cmd->buttons |= curWeapon<<BT_WEAPONSHIFT;
}
}
#endif
// Fly up/down/drop keys
if(gamekeydown[key_flyup])
{
flyheight = 5; // note that the actual flyheight will be twice this
}
if(gamekeydown[key_flydown])
{
flyheight = -5;
}
if(gamekeydown[key_flycenter])
{
flyheight = TOCENTER;
#ifdef __WATCOMC__
if(!useexterndriver)
{
look = TOCENTER;
}
#else
look = TOCENTER;
#endif
}
// Use artifact key
if(gamekeydown[key_useartifact])
{
if(gamekeydown[key_speed] && !noartiskip)
{
if(players[consoleplayer].inventory[inv_ptr].type != arti_none)
{
gamekeydown[key_useartifact] = false;
cmd->arti = 0xff; // skip artifact code
}
}
else
{
if(inventory)
{
players[consoleplayer].readyArtifact =
players[consoleplayer].inventory[inv_ptr].type;
inventory = false;
cmd->arti = 0;
usearti = false;
}
else if(usearti)
{
cmd->arti = players[consoleplayer].inventory[inv_ptr].type;
usearti = false;
}
}
}
if(gamekeydown[127] && !cmd->arti
&& !players[consoleplayer].powers[pw_weaponlevel2])
{
gamekeydown[127] = false;
cmd->arti = arti_tomeofpower;
}
//
// buttons
//
cmd->chatchar = CT_dequeueChatChar();
if (gamekeydown[key_fire] || mousebuttons[mousebfire]
|| joybuttons[joybfire])
cmd->buttons |= BT_ATTACK;
if (gamekeydown[key_use] || joybuttons[joybuse] )
{
cmd->buttons |= BT_USE;
dclicks = 0; // clear double clicks if hit use button
}
for(i = 0; i < NUMWEAPONS-2; i++)
{
if(gamekeydown['1'+i])
{
cmd->buttons |= BT_CHANGE;
cmd->buttons |= i<<BT_WEAPONSHIFT;
break;
}
}
//
// mouse
//
if (mousebuttons[mousebforward])
{
forward += forwardmove[speed];
}
//
// forward double click
//
if (mousebuttons[mousebforward] != dclickstate && dclicktime > 1 )
{
dclickstate = mousebuttons[mousebforward];
if (dclickstate)
dclicks++;
if (dclicks == 2)
{
cmd->buttons |= BT_USE;
dclicks = 0;
}
else
dclicktime = 0;
}
else
{
dclicktime += ticdup;
if (dclicktime > 20)
{
dclicks = 0;
dclickstate = 0;
}
}
//
// strafe double click
//
bstrafe = mousebuttons[mousebstrafe]
|| joybuttons[joybstrafe];
if (bstrafe != dclickstate2 && dclicktime2 > 1 )
{
dclickstate2 = bstrafe;
if (dclickstate2)
dclicks2++;
if (dclicks2 == 2)
{
cmd->buttons |= BT_USE;
dclicks2 = 0;
}
else
dclicktime2 = 0;
}
else
{
dclicktime2 += ticdup;
if (dclicktime2 > 20)
{
dclicks2 = 0;
dclickstate2 = 0;
}
}
if (strafe)
{
side += mousex*2;
}
else
{
cmd->angleturn -= mousex*0x8;
}
forward += mousey;
mousex = mousey = 0;
if (forward > MAXPLMOVE)
forward = MAXPLMOVE;
else if (forward < -MAXPLMOVE)
forward = -MAXPLMOVE;
if (side > MAXPLMOVE)
side = MAXPLMOVE;
else if (side < -MAXPLMOVE)
side = -MAXPLMOVE;
cmd->forwardmove += forward;
cmd->sidemove += side;
if(players[consoleplayer].playerstate == PST_LIVE)
{
if(look < 0)
{
look += 16;
}
cmd->lookfly = look;
}
if(flyheight < 0)
{
flyheight += 16;
}
cmd->lookfly |= flyheight<<4;
//
// special buttons
//
if (sendpause)
{
sendpause = false;
cmd->buttons = BT_SPECIAL | BTS_PAUSE;
}
if (sendsave)
{
sendsave = false;
cmd->buttons = BT_SPECIAL | BTS_SAVEGAME | (savegameslot<<BTS_SAVESHIFT);
}
}
/*
==============
=
= G_DoLoadLevel
=
==============
*/
void G_DoLoadLevel (void)
{
int i;
levelstarttic = gametic; // for time calculation
gamestate = GS_LEVEL;
for (i=0 ; i<MAXPLAYERS ; i++)
{
if (playeringame[i] && players[i].playerstate == PST_DEAD)
players[i].playerstate = PST_REBORN;
memset (players[i].frags,0,sizeof(players[i].frags));
}
P_SetupLevel (gameepisode, gamemap, 0, gameskill);
displayplayer = consoleplayer; // view the guy you are playing
starttime = I_GetTime ();
gameaction = ga_nothing;
Z_CheckHeap ();
//
// clear cmd building stuff
//
memset (gamekeydown, 0, sizeof(gamekeydown));
joyxmove = joyymove = 0;
mousex = mousey = 0;
sendpause = sendsave = paused = false;
memset (mousebuttons, 0, sizeof(mousebuttons));
memset (joybuttons, 0, sizeof(joybuttons));
}
/*
===============================================================================
=
= G_Responder
=
= get info needed to make ticcmd_ts for the players
=
===============================================================================
*/
boolean G_Responder(event_t *ev)
{
player_t *plr;
extern boolean MenuActive;
plr = &players[consoleplayer];
if(ev->type == ev_keyup && ev->data1 == key_useartifact)
{ // flag to denote that it's okay to use an artifact
if(!inventory)
{
plr->readyArtifact = plr->inventory[inv_ptr].type;
}
usearti = true;
}
// Check for spy mode player cycle
if(gamestate == GS_LEVEL && ev->type == ev_keydown
&& ev->data1 == KEY_F12 && !deathmatch)
{ // Cycle the display player
do
{
displayplayer++;
if(displayplayer == MAXPLAYERS)
{
displayplayer = 0;
}
} while(!playeringame[displayplayer]
&& displayplayer != consoleplayer);
return(true);
}
if(gamestate == GS_LEVEL)
{
if(CT_Responder(ev))
{ // Chat ate the event
return(true);
}
if(SB_Responder(ev))
{ // Status bar ate the event
return(true);
}
if(AM_Responder(ev))
{ // Automap ate the event
return(true);
}
}
switch(ev->type)
{
case ev_keydown:
if(ev->data1 == key_invleft)
{
inventoryTics = 5*35;
if(!inventory)
{
inventory = true;
break;
}
inv_ptr--;
if(inv_ptr < 0)
{
inv_ptr = 0;
}
else
{
curpos--;
if(curpos < 0)
{
curpos = 0;
}
}
return(true);
}
if(ev->data1 == key_invright)
{
inventoryTics = 5*35;
if(!inventory)
{
inventory = true;
break;
}
inv_ptr++;
if(inv_ptr >= plr->inventorySlotNum)
{
inv_ptr--;
if(inv_ptr < 0)
inv_ptr = 0;
}
else
{
curpos++;
if(curpos > 6)
{
curpos = 6;
}
}
return(true);
}
if(ev->data1 == KEY_PAUSE && !MenuActive)
{
sendpause = true;
return(true);
}
if(ev->data1 < NUMKEYS)
{
gamekeydown[ev->data1] = true;
}
return(true); // eat key down events
case ev_keyup:
if(ev->data1 < NUMKEYS)
{
gamekeydown[ev->data1] = false;
}
return(false); // always let key up events filter down
case ev_mouse:
mousebuttons[0] = ev->data1&1;
mousebuttons[1] = ev->data1&2;
mousebuttons[2] = ev->data1&4;
mousex = ev->data2*(mouseSensitivity+5)/10;
mousey = ev->data3*(mouseSensitivity+5)/10;
return(true); // eat events
case ev_joystick:
joybuttons[0] = ev->data1&1;
joybuttons[1] = ev->data1&2;
joybuttons[2] = ev->data1&4;
joybuttons[3] = ev->data1&8;
joyxmove = ev->data2;
joyymove = ev->data3;
return(true); // eat events
default:
break;
}
return(false);
}
/*
===============================================================================
=
= G_Ticker
=
===============================================================================
*/
void G_Ticker (void)
{
int i, buf;
ticcmd_t *cmd;
//
// do player reborns if needed
//
for (i=0 ; i<MAXPLAYERS ; i++)
if (playeringame[i] && players[i].playerstate == PST_REBORN)
G_DoReborn (i);
//
// do things to change the game state
//
while (gameaction != ga_nothing)
{
switch (gameaction)
{
case ga_loadlevel:
G_DoLoadLevel ();
break;
case ga_newgame:
G_DoNewGame ();
break;
case ga_loadgame:
G_DoLoadGame ();
break;
case ga_savegame:
G_DoSaveGame ();
break;
case ga_playdemo:
G_DoPlayDemo ();
break;
case ga_screenshot:
M_ScreenShot ();
gameaction = ga_nothing;
break;
case ga_completed:
G_DoCompleted ();
break;
case ga_worlddone:
G_DoWorldDone();
break;
case ga_victory:
F_StartFinale();
break;
default:
break;
}
}
//
// get commands, check consistancy, and build new consistancy check
//
//buf = gametic%BACKUPTICS;
buf = (gametic/ticdup)%BACKUPTICS;
for (i=0 ; i<MAXPLAYERS ; i++)
if (playeringame[i])
{
cmd = &players[i].cmd;
memcpy (cmd, &netcmds[i][buf], sizeof(ticcmd_t));
if (demoplayback)
G_ReadDemoTiccmd (cmd);
if (demorecording)
G_WriteDemoTiccmd (cmd);
if (netgame && !(gametic%ticdup) )
{
if (gametic > BACKUPTICS
&& consistancy[i][buf] != cmd->consistancy)
{
I_Error ("consistency failure (%i should be %i)",cmd->consistancy, consistancy[i][buf]);
}
if (players[i].mo)
consistancy[i][buf] = players[i].mo->x;
else
consistancy[i][buf] = rndindex;
}
}
//
// check for special buttons
//
for (i=0 ; i<MAXPLAYERS ; i++)
if (playeringame[i])
{
if (players[i].cmd.buttons & BT_SPECIAL)
{
switch (players[i].cmd.buttons & BT_SPECIALMASK)
{
case BTS_PAUSE: