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p_mobj.c
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#include "doomdef.h"
#include "i_system.h"
#include "z_zone.h"
#include "m_random.h"
#include "p_local.h"
#include "sounds.h"
#include "st_stuff.h"
#include "hu_stuff.h"
#include "s_sound.h"
#include "doomstat.h"
#ifdef SERVER
#include <netinet/in.h>
#include "network.h"
#include "sv_cmds.h"
#else
#include "cl_cmds.h"
#endif
// [kg] keep track of projectile hits
extern mobj_t *hitmobj;
void G_PlayerReborn (int player);
void P_SpawnMapThing (mapthing_hexen_t* mthing);
//
// P_SetMobjState
// Returns true if the mobj is still present.
//
int test;
boolean
P_SetMobjState
( mobj_t* mobj,
statenum_t state )
{
state_t* st;
do
{
if (state == S_NULL)
{
mobj->state = (state_t *) S_NULL;
#ifdef SERVER
P_RemoveMobj (mobj, false);
#else
P_RemoveMobj (mobj);
#endif
return false;
}
st = &states[state];
mobj->state = st;
mobj->tics = st->tics;
mobj->sprite = st->sprite;
mobj->frame = st->frame;
// Modified handling.
// Call action functions when the state is set
if (st->action.acp1)
st->action.acp1(mobj);
state = st->nextstate;
} while (!mobj->tics);
return true;
}
//
// P_ExplodeMissile
//
void P_ExplodeMissile (mobj_t* mo)
{
mo->momx = mo->momy = mo->momz = 0;
P_SetMobjState (mo, mobjinfo[mo->type].deathstate);
mo->tics -= P_Random()&3;
if (mo->tics < 1)
mo->tics = 1;
mo->flags &= ~MF_MISSILE;
if (mo->info->deathsound)
S_StartSound (mo, mo->info->deathsound, SOUND_BODY);
}
//
// P_XYMovement
// [kg] check valid position more often
// MAXMOVE_STEP is basicaly smallest radius that won't skip any collision
//
void P_XYMovement (mobj_t* mo)
{
fixed_t ptryx;
fixed_t ptryy;
player_t* player;
fixed_t xmove;
fixed_t ymove;
int stepdir = 0;
if (!mo->momx && !mo->momy)
{
if (mo->flags & MF_SKULLFLY)
{
// the skull slammed into something
mo->flags &= ~MF_SKULLFLY;
mo->momx = mo->momy = mo->momz = 0;
P_SetMobjState (mo, mo->info->spawnstate);
}
return;
}
player = mo->player;
if (mo->momx > MAXMOVE)
mo->momx = MAXMOVE;
else if (mo->momx < -MAXMOVE)
mo->momx = -MAXMOVE;
if (mo->momy > MAXMOVE)
mo->momy = MAXMOVE;
else if (mo->momy < -MAXMOVE)
mo->momy = -MAXMOVE;
xmove = mo->momx;
ymove = mo->momy;
if(xmove < 0)
{
xmove = -xmove;
stepdir = 1;
}
if(ymove < 0)
{
ymove = -ymove;
stepdir |= 2;
}
do
{
fixed_t stepx, stepy;
stepx = xmove > MAXMOVE_STEP ? MAXMOVE_STEP : xmove;
stepy = ymove > MAXMOVE_STEP ? MAXMOVE_STEP : ymove;
if(stepdir & 1)
ptryx = mo->x - stepx;
else
ptryx = mo->x + stepx;
if(stepdir & 2)
ptryy = mo->y - stepy;
else
ptryy = mo->y + stepy;
xmove -= stepx;
ymove -= stepy;
hitmobj = NULL;
if (!P_TryMove (mo, ptryx, ptryy))
{
// blocked move
if (mo->player)
{ // try to slide along it
P_SlideMove (mo);
// [kg] done moving
break;
}
else if (mo->flags & MF_MISSILE)
{
if(ceilingline)
{
sector_t *sec;
if(P_PointOnLineSide(mo->x, mo->y, ceilingline))
sec = ceilingline->frontsector;
else
sec = ceilingline->backsector;
// explode a missile
if(sec->ceilingpic == skyflatnum && mo->z + mo->height >= sec->ceilingheight)
{
// Hack to prevent missiles exploding
// against the sky.
// Does not handle sky floors.
#ifdef SERVER
P_RemoveMobj (mo, false);
#else
P_RemoveMobj (mo);
#endif
return;
}
}
P_ExplodeMissile (mo);
#ifdef SERVER
// [kg] explode clientside projectile
if(hitmobj)
SV_UpdateMobj(mo, SV_MOBJF_POSITION | SV_MOBJF_MOMENTNUM | SV_MOBJF_FLAGS | SV_MOBJF_STATE | SV_MOBJF_SOUND_DEATH);
#endif
}
else
mo->momx = mo->momy = 0;
}
} while (xmove || ymove);
// slow down
if (player && player->cheats & CF_NOMOMENTUM)
{
// debug option for no sliding at all
mo->momx = mo->momy = 0;
return;
}
if (mo->flags & (MF_MISSILE | MF_SKULLFLY) )
return; // no friction for missiles ever
if (mo->z > mo->floorz)
return; // no friction when airborne
if (mo->flags & MF_CORPSE)
{
// do not stop sliding
// if halfway off a step with some momentum
if (mo->momx > FRACUNIT/4
|| mo->momx < -FRACUNIT/4
|| mo->momy > FRACUNIT/4
|| mo->momy < -FRACUNIT/4)
{
if (mo->floorz != mo->subsector->sector->floorheight)
return;
}
}
if (mo->momx > -STOPSPEED
&& mo->momx < STOPSPEED
&& mo->momy > -STOPSPEED
&& mo->momy < STOPSPEED
&& (!player
|| (player->cmd.forwardmove== 0
&& player->cmd.sidemove == 0 ) ) )
{
#ifndef SERVER
if(!netgame)
#endif
// if in a walking frame, stop moving
if ( player&&(unsigned)((player->mo->state - states)- S_PLAY_RUN1) < 4)
P_SetMobjState (player->mo, S_PLAY);
mo->momx = 0;
mo->momy = 0;
}
else
{
mo->momx = FixedMul (mo->momx, FRICTION);
mo->momy = FixedMul (mo->momy, FRICTION);
}
}
//
// P_ZMovement
//
void P_ZMovement (mobj_t* mo)
{
fixed_t dist;
fixed_t delta;
// check for smooth step up
#ifdef SERVER
if(mo->player && mo->z < mo->floorz)
#else
if(!local_player_predict && mo->player && mo->z < mo->floorz)
#endif
{
mo->player->viewheight -= mo->floorz-mo->z;
mo->player->deltaviewheight
= (VIEWHEIGHT - mo->player->viewheight)>>3;
}
// adjust height
mo->z += mo->momz;
if ( mo->flags & MF_FLOAT
&& mo->target)
{
// float down towards target if too close
if ( !(mo->flags & MF_SKULLFLY)
&& !(mo->flags & MF_INFLOAT) )
{
dist = P_AproxDistance (mo->x - mo->target->x,
mo->y - mo->target->y);
delta =(mo->target->z + (mo->height>>1)) - mo->z;
if (delta<0 && dist < -(delta*3) )
mo->z -= FLOATSPEED;
else if (delta>0 && dist < (delta*3) )
mo->z += FLOATSPEED;
}
}
// clip movement
if (mo->z <= mo->floorz)
{
// hit the floor
// Note (id):
// somebody left this after the setting momz to 0,
// kinda useless there.
if (mo->flags & MF_SKULLFLY)
{
// the skull slammed into something
mo->momz = -mo->momz;
}
if (mo->momz < 0)
{
#ifdef SERVER
if (mo->player && mo->health > 0
#else
if (!local_player_predict && mo->player && mo->health > 0
#endif
&& mo->momz < -GRAVITY*8 &&
!(mo->player->cheats & CF_SPECTATOR)
){
// Squat down.
// Decrease viewheight for a moment
// after hitting the ground (hard),
// and utter appropriate sound.
mo->player->deltaviewheight = mo->momz>>3;
S_StartSound (mo, sfx_oof, SOUND_BODY);
}
mo->momz = 0;
}
mo->z = mo->floorz;
if ( (mo->flags & MF_MISSILE)
&& !(mo->flags & MF_NOCLIP) )
{
if(mo->subsector->sector->floorpic == skyflatnum)
#ifdef SERVER
P_RemoveMobj (mo, false);
#else
P_RemoveMobj (mo);
#endif
else
P_ExplodeMissile (mo);
return;
}
}
else if (! (mo->flags & MF_NOGRAVITY) )
{
if (mo->momz == 0)
mo->momz = -GRAVITY*2;
else
mo->momz -= GRAVITY;
}
if (mo->z + mo->height > mo->ceilingz)
{
// hit the ceiling
if (mo->momz > 0)
mo->momz = 0;
{
mo->z = mo->ceilingz - mo->height;
}
if (mo->flags & MF_SKULLFLY)
{ // the skull slammed into something
mo->momz = -mo->momz;
}
if ( (mo->flags & MF_MISSILE)
&& !(mo->flags & MF_NOCLIP) )
{
if(mo->subsector->sector->ceilingpic == skyflatnum)
#ifdef SERVER
P_RemoveMobj (mo, false);
#else
P_RemoveMobj (mo);
#endif
else
P_ExplodeMissile (mo);
return;
}
}
}
//
// P_NightmareRespawn
//
void
P_NightmareRespawn (mobj_t* mobj)
{
fixed_t x;
fixed_t y;
fixed_t z;
subsector_t* ss;
mobj_t* mo;
mapthing_hexen_t* mthing;
x = mobj->spawnpoint.x << FRACBITS;
y = mobj->spawnpoint.y << FRACBITS;
// somthing is occupying it's position?
if (!P_CheckPosition (mobj, x, y) )
return; // no respwan
// spawn a teleport fog at old spot
// because of removal of the body?
mo = P_SpawnMobj (mobj->x,
mobj->y,
mobj->subsector->sector->floorheight , MT_TFOG);
// initiate teleport sound
if(mo->info->seesound)
S_StartSound (mo, mo->info->seesound, SOUND_BODY);
#ifdef SERVER
// tell clients about this
SV_SpawnMobj(mo, SV_MOBJF_SOUND_SEE);
#endif
// spawn a teleport fog at the new spot
ss = R_PointInSubsector (x,y);
mo = P_SpawnMobj (x, y, ss->sector->floorheight , MT_TFOG);
// initiate teleport sound
if(mo->info->seesound)
S_StartSound (mo, mo->info->seesound, SOUND_BODY);
#ifdef SERVER
// tell clients about this
SV_SpawnMobj(mo, SV_MOBJF_SOUND_SEE);
#endif
// spawn the new monster
mthing = &mobj->spawnpoint;
// spawn it
if (mobj->info->flags & MF_SPAWNCEILING)
z = ONCEILINGZ;
else
z = ONFLOORZ;
// inherit attributes from deceased one
mo = P_SpawnMobj (x,y,z, mobj->type);
mo->spawnpoint = mobj->spawnpoint;
mo->angle = ANG45 * (mthing->angle/45);
if (mthing->flags & MTF_AMBUSH)
mo->flags |= MF_AMBUSH;
mo->reactiontime = 18;
#ifdef SERVER
// tell clients about this
SV_SpawnMobj(mo, 0);
#endif
// remove the old monster,
#ifdef SERVER
P_RemoveMobj (mobj, true);
#else
P_RemoveMobj (mobj);
#endif
}
//
// P_MobjThinker
//
void P_MobjThinker (mobj_t* mobj)
{
#ifdef SERVER
if(disable_player_think && mobj->player)
return;
#endif
// momentum movement
if (mobj->momx
|| mobj->momy
|| (mobj->flags&MF_SKULLFLY) )
{
P_XYMovement (mobj);
// FIXME: decent NOP/NULL/Nil function pointer please.
if (mobj->thinker.function.acv == (actionf_v) (-1))
return; // mobj was removed
}
if ( (mobj->z != mobj->floorz)
|| mobj->momz )
{
P_ZMovement (mobj);
// FIXME: decent NOP/NULL/Nil function pointer please.
if (mobj->thinker.function.acv == (actionf_v) (-1))
return; // mobj was removed
}
#ifndef SERVER
if(local_player_predict)
return;
#endif
// [kg] new cheat
if(mobj->player && mobj->player->cheats & CF_INFHEALTH && mobj->health < 100)
{
mobj->health++;
mobj->player->health = mobj->health;
}
// cycle through states,
// calling action functions at transitions
if (mobj->tics != -1)
{
mobj->tics--;
// you can cycle through multiple states in a tic
if (!mobj->tics)
if (!P_SetMobjState (mobj, mobj->state->nextstate) )
return; // freed itself
}
else
{
// check for nightmare respawn
if (! (mobj->flags & MF_COUNTKILL) )
return;
if (!respawnmonsters)
return;
mobj->movecount++;
if (mobj->movecount < 12*35)
return;
if ( leveltime&31 )
return;
if (P_Random () > 4)
return;
P_NightmareRespawn (mobj);
}
}
//
// P_SpawnMobj
//
mobj_t*
P_SpawnMobj
( fixed_t x,
fixed_t y,
fixed_t z,
mobjtype_t type )
{
mobj_t* mobj;
state_t* st;
mobjinfo_t* info;
mobj = Z_Malloc (sizeof(*mobj), PU_LEVEL, NULL);
memset (mobj, 0, sizeof (*mobj));
info = &mobjinfo[type];
mobj->type = type;
mobj->info = info;
mobj->x = x;
mobj->y = y;
mobj->radius = info->radius;
mobj->height = info->height;
mobj->flags = info->flags;
mobj->health = info->spawnhealth;
// [kg] unique ID
#ifdef SERVER
mobj->netid = net_mobjid++;
#else
if(netgame)
mobj->netid = -1;
else
mobj->netid = net_mobjid++;
#endif
if (gameskill != sk_nightmare)
mobj->reactiontime = info->reactiontime;
mobj->lastlook = P_Random () % MAXPLAYERS;
// do not set the state with P_SetMobjState,
// because action routines can not be called yet
st = &states[info->spawnstate];
mobj->state = st;
mobj->tics = st->tics;
mobj->sprite = st->sprite;
mobj->frame = st->frame;
// set subsector and/or block links
P_SetThingPosition (mobj);
mobj->floorz = mobj->subsector->sector->floorheight;
mobj->ceilingz = mobj->subsector->sector->ceilingheight;
if (z == ONFLOORZ)
mobj->z = mobj->floorz;
else if (z == ONCEILINGZ)
mobj->z = mobj->ceilingz - mobj->info->height;
else
mobj->z = z;
mobj->thinker.function.acp1 = (actionf_p1)P_MobjThinker;
P_AddThinker (&mobj->thinker);
return mobj;
}
//
// [kg] find MOBJ by netid
//
mobj_t *P_MobjByNetId(int netid)
{
thinker_t *think;
mobj_t *mo;
if(!thinkercap.next)
return NULL;
for(think = thinkercap.next; think != &thinkercap; think = think->next)
{
if(think->function.acv != P_MobjThinker)
// Not a mobj thinker
continue;
mo = (mobj_t *)think;
if(mo->netid == netid)
return mo;
}
return NULL;
}
//
// P_RemoveMobj
//
#ifdef SERVER
void P_RemoveMobj (mobj_t* mobj, boolean clientside)
{
// remove from clients
if(clientside)
SV_RemoveMobj(mobj);
#else
void P_RemoveMobj (mobj_t* mobj)
{
#endif
// unlink from sector and block lists
P_UnsetThingPosition (mobj);
// stop any playing sound
S_StopSound (mobj, SOUND_STOP_ALL);
// free block
P_RemoveThinker ((thinker_t*)mobj);
}
//
// P_SpawnPlayer
// Called when a player is spawned on the level.
// Most of the player structure stays unchanged
// between levels.
//
void P_SpawnPlayer (mapthing_hexen_t* mthing, int netplayer)
{
player_t* p;
fixed_t x;
fixed_t y;
fixed_t z;
mobj_t* mobj;
int i;
p = &players[mthing->type-1];
#ifdef SERVER
if(netplayer < 0)
return;
p = &players[netplayer];
#else
if(netgame)
{
// start spectator player
if(players[consoleplayer].mo)
return;
p = &players[consoleplayer];
} else
{
// not playing?
if (!playeringame[mthing->type-1])
return;
}
#endif
if (p->playerstate == PST_REBORN)
G_PlayerReborn (mthing->type-1);
x = mthing->x << FRACBITS;
y = mthing->y << FRACBITS;
z = ONFLOORZ;
mobj = P_SpawnMobj (x,y,z, MT_PLAYER);
// set color translations for player sprites; TODO: change
// if (mthing->type > 1)
// mobj->flags |= (mthing->type-1)<<MF_TRANSSHIFT;
mobj->angle = ANG45 * (mthing->angle/45);
mobj->player = p;
mobj->health = p->health;
#ifdef SERVER
mobj->reactiontime = 2;
#endif
p->mo = mobj;
p->playerstate = PST_LIVE;
p->refire = 0;
p->message = NULL;
p->damagecount = 0;
p->bonuscount = 0;
p->extralight = 0;
p->fixedcolormap = 0;
p->viewheight = VIEWHEIGHT;
#ifndef SERVER
if(netgame)
{
// start as a spectator
P_UnsetThingPosition(mobj);
p->cheats = CF_SPECTATOR | CF_NOCLIP | CF_GODMODE;
mobj->flags &= ~(MF_SOLID | MF_SHOOTABLE);
mobj->flags |= MF_NOSECTOR | MF_NOBLOCKMAP;
}
#endif
// setup gun psprite
P_SetupPsprites (p);
// give all cards in death match mode
if (deathmatch)
for (i=0 ; i<NUMCARDS ; i++)
p->cards[i] = true;
#ifdef SERVER
// [kg] tell clients about this
SV_SpawnPlayer(netplayer);
#else
if (netgame || mthing->type-1 == consoleplayer)
{
// wake up the heads up text
HU_Start ();
}
#endif
}
//
// P_SpawnMapThing
// The fields of the mapthing should
// already be in host byte order.
//
void P_SpawnMapThing (mapthing_hexen_t* mthing)
{
int i;
int bit;
mobj_t* mobj;
fixed_t x;
fixed_t y;
fixed_t z;
// count deathmatch start positions
if (mthing->type == 11)
{
if (deathmatch_p < &deathmatchstarts[10])
{
memcpy (deathmatch_p, mthing, sizeof(*mthing));
deathmatch_p++;
}
return;
}
// check for players specially
if (mthing->type <= 4)
{
// save spots for respawning in network games
playerstarts[mthing->type-1] = *mthing;
if (!deathmatch)
P_SpawnPlayer (mthing, -1);
return;
}
#ifndef SERVER
if(netgame)
return;
#endif
// check for apropriate skill level
if (!netgame && (mthing->flags & 16) )
return;
if (gameskill == sk_baby)
bit = 1;
else if (gameskill == sk_nightmare)
bit = 4;
else
bit = 1<<(gameskill-1);
if (!(mthing->flags & bit) )
return;
// find which type to spawn
for (i=0 ; i< NUMMOBJTYPES ; i++)
if (mthing->type == mobjinfo[i].doomednum)
break;
if (i==NUMMOBJTYPES)
{
// I_Error ("P_SpawnMapThing: Unknown type %i at (%i, %i)", mthing->type, mthing->x, mthing->y);
printf("P_SpawnMapThing: Unknown type %i at (%i, %i)\n", mthing->type, mthing->x, mthing->y);
return;
}
#ifdef SERVER
// [kg] spawn network weapons only in deathmatch
if(netgame && mthing->flags & 16)
{
if(!(i == MT_SKULL || (mobjinfo[i].flags & MF_COUNTKILL)) && !deathmatch)
// it's not a monster, don't spawn
return;
}
#endif
// don't spawn keycards and players in deathmatch
if (deathmatch && mobjinfo[i].flags & MF_NOTDMATCH)
return;
// don't spawn any monsters if -nomonsters
if (nomonsters
&& ( i == MT_SKULL
|| (mobjinfo[i].flags & MF_COUNTKILL)) )
{
return;
}
// spawn it
x = mthing->x << FRACBITS;
y = mthing->y << FRACBITS;
if(isHexen)
z = mthing->z << FRACBITS;
else
z = ONFLOORZ;
if (mobjinfo[i].flags & MF_SPAWNCEILING)
z = ONCEILINGZ;
mobj = P_SpawnMobj (x,y,z, i);
mobj->spawnpoint = *mthing;
if(z != ONFLOORZ && z != ONCEILINGZ)
mobj->z = mobj->subsector->sector->floorheight;
if (mobj->tics > 0)
mobj->tics = 1 + (P_Random () % mobj->tics);
if (mobj->flags & MF_COUNTKILL)
totalkills++;
if (mobj->flags & MF_COUNTITEM)
totalitems++;
mobj->angle = ANG45 * (mthing->angle/45);
if (mthing->flags & MTF_AMBUSH)
mobj->flags |= MF_AMBUSH;
}
//
// GAME SPAWN FUNCTIONS
//
//
// P_SpawnPuff
//
extern fixed_t attackrange;
void
P_SpawnPuff
( fixed_t x,
fixed_t y,
fixed_t z )
{
mobj_t *th;
sector_t *sec;
z += ((P_Random()-P_Random())<<10);
th = P_SpawnMobj (x,y,z, MT_PUFF);
th->momz = FRACUNIT;
th->tics -= P_Random()&3;
sec = th->subsector->sector;
if(z < sec->floorheight)
z = sec->floorheight;
if(z > sec->ceilingheight - th->info->height)
z = sec->ceilingheight - th->info->height;
th->z = z;
if (th->tics < 1)
th->tics = 1;
#ifdef SERVER
// tell clients about this
if (attackrange == MELEERANGE)
{
P_SetMobjState (th, S_PUFF3);
SV_SpawnMobj(th, SV_MOBJF_MOMZ | SV_MOBJF_STATE);
} else
SV_SpawnMobj(th, SV_MOBJF_MOMZ);
#else
// don't make punches spark on the wall
if (attackrange == MELEERANGE)
P_SetMobjState (th, S_PUFF3);
#endif
}
//
// P_SpawnBlood
//
void
P_SpawnBlood
( fixed_t x,
fixed_t y,
fixed_t z,
int damage,
mobj_t *origin )
{
mobj_t* th;
z += ((P_Random()-P_Random())<<10);
th = P_SpawnMobj (x,y,z, MT_BLOOD);
th->flags |= (origin->flags & MF_BLOODCOLOR) | (origin->flags & MF_SHADOW);
th->momz = FRACUNIT*2;
th->tics -= P_Random()&3;
if (th->tics < 1)
th->tics = 1;
if (damage <= 12 && damage >= 9)
P_SetMobjState (th,S_BLOOD2);
else if (damage < 9)
P_SetMobjState (th,S_BLOOD3);
#ifdef SERVER
// tell clients about this
SV_SpawnMobj(th, SV_MOBJF_MOMZ | SV_MOBJF_FLAGS | SV_MOBJF_STATE);
#endif
}
//
// P_CheckMissileSpawn
// Moves the missile forward a bit
// and possibly explodes it right there.
//
void P_CheckMissileSpawn (mobj_t* th)
{
th->tics -= P_Random()&3;
if (th->tics < 1)
th->tics = 1;
// move a little forward so an angle can
// be computed if it immediately explodes
th->x += (th->momx>>1);
th->y += (th->momy>>1);
th->z += (th->momz>>1);
if (!P_TryMove (th, th->x, th->y))
P_ExplodeMissile (th);
}
//