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p_mobj.c
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p_mobj.c
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#include <stdlib.h>
#include <string.h>
#include "doomdef.h"
#include "d_think.h"
#include "p_pspr.h"
#include "doomstat.h"
#include "m_random.h"
#include "r_main.h"
#include "p_maputl.h"
#include "p_map.h"
#include "p_tick.h"
#include "st_stuff.h"
#include "hu_stuff.h"
#include "s_sound.h"
#include "info.h"
#include "g_game.h"
#include "p_inter.h"
#include "i_system.h"
#include "z_zone.h"
static mapthing_t itemrespawnque[ITEMQUESIZE];
static int itemrespawntime[ITEMQUESIZE];
static int iquehead;
static int iquetail;
extern int attackrange;
boolean P_SetMobjState(mobj_t *mobj, statenum_t state)
{
state_t *st;
static statenum_t seenstate_tab[NUMSTATES];
statenum_t *seenstate = seenstate_tab;
static int recursion;
statenum_t i = state;
boolean ret = true;
statenum_t tempstate[NUMSTATES];
if (recursion++)
memset(seenstate = tempstate, 0, sizeof tempstate);
do
{
if (state == S_NULL)
{
mobj->state = (state_t *)S_NULL;
P_RemoveMobj(mobj);
ret = false;
break;
}
st = &states[state];
mobj->state = st;
mobj->tics = st->tics;
mobj->sprite = st->sprite;
mobj->frame = st->frame;
if (st->action)
st->action(mobj);
seenstate[state] = 1 + st->nextstate;
state = st->nextstate;
} while (!mobj->tics && !seenstate[state]);
if (ret && !mobj->tics)
I_Error("P_SetMobjState: State Cycle Detected");
if (!--recursion)
{
for (; (state=seenstate[i]); i = state - 1)
seenstate[i] = 0;
}
return ret;
}
void P_ExplodeMissile(mobj_t *mo)
{
mo->momx = mo->momy = mo->momz = 0;
P_SetMobjState (mo, mobjinfo[mo->type].deathstate);
mo->tics -= P_Random(pr_explode)&3;
if (mo->tics < 1)
mo->tics = 1;
mo->flags &= ~MF_MISSILE;
if (mo->info->deathsound)
S_StartSound (mo, mo->info->deathsound);
}
static void P_XYMovement(mobj_t *mo)
{
player_t *player;
int xmove, ymove;
if (!(mo->momx | mo->momy))
{
if (mo->flags & MF_SKULLFLY)
{
mo->flags &= ~MF_SKULLFLY;
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;
do
{
int ptryx, ptryy;
if (xmove > MAXMOVE / 2 || ymove > MAXMOVE / 2 || (xmove < -MAXMOVE / 2 || ymove < -MAXMOVE / 2))
{
ptryx = mo->x + xmove / 2;
ptryy = mo->y + ymove / 2;
xmove >>= 1;
ymove >>= 1;
}
else
{
ptryx = mo->x + xmove;
ptryy = mo->y + ymove;
xmove = ymove = 0;
}
if (!P_TryMove(mo, ptryx, ptryy, true))
{
if (!(mo->flags & MF_MISSILE) && (mo->flags & MF_BOUNCES || (!player && blockline && mo->z <= mo->floorz && P_GetFriction(mo, NULL) > ORIG_FRICTION)))
{
if (blockline)
{
int r = ((blockline->dx >> FRACBITS) * mo->momx + (blockline->dy >> FRACBITS) * mo->momy) / ((blockline->dx >> FRACBITS) * (blockline->dx >> FRACBITS) + (blockline->dy >> FRACBITS)*(blockline->dy >> FRACBITS));
int x = FixedMul(r, blockline->dx);
int y = FixedMul(r, blockline->dy);
mo->momx = x * 2 - mo->momx;
mo->momy = y * 2 - mo->momy;
if (!(mo->flags & MF_NOGRAVITY))
{
mo->momx = (mo->momx + x) / 2;
mo->momy = (mo->momy + y) / 2;
}
}
else
{
mo->momx = mo->momy = 0;
}
}
else if (player)
{
P_SlideMove(mo);
}
else if (mo->flags & MF_MISSILE)
{
if (ceilingline && ceilingline->backsector && ceilingline->backsector->ceilingpic == skyflatnum)
{
if (mo->z > ceilingline->backsector->ceilingheight)
{
P_RemoveMobj(mo);
return;
}
}
P_ExplodeMissile(mo);
}
else
{
mo->momx = mo->momy = 0;
}
}
} while (xmove || ymove);
if (mo->flags & (MF_MISSILE | MF_SKULLFLY) || mo->z > mo->floorz)
return;
if (((mo->flags & MF_BOUNCES && mo->z > mo->dropoffz) || mo->flags & MF_CORPSE || mo->intflags & MIF_FALLING) && (mo->momx > FRACUNIT / 4 || mo->momx < -FRACUNIT / 4 || mo->momy > FRACUNIT / 4 || mo->momy < -FRACUNIT / 4) && mo->floorz != mo->subsector->sector->floorheight)
return;
if (mo->momx > -STOPSPEED && mo->momx < STOPSPEED && mo->momy > -STOPSPEED && mo->momy < STOPSPEED && (!player || !(player->cmd.forwardmove | player->cmd.sidemove) || (player->mo != mo)))
{
if (player && (unsigned)(player->mo->state - states - S_PLAY_RUN1) < 4)
P_SetMobjState(player->mo, S_PLAY);
mo->momx = mo->momy = 0;
if (player && player->mo == mo)
player->momx = player->momy = 0;
}
else
{
int friction = P_GetFriction(mo, NULL);
mo->momx = FixedMul(mo->momx, friction);
mo->momy = FixedMul(mo->momy, friction);
if (player && player->mo == mo)
{
player->momx = FixedMul(player->momx, ORIG_FRICTION);
player->momy = FixedMul(player->momy, ORIG_FRICTION);
}
}
}
static void P_ZMovement(mobj_t *mo)
{
if (mo->flags & MF_BOUNCES && mo->momz)
{
mo->z += mo->momz;
if (mo->z <= mo->floorz)
{
mo->z = mo->floorz;
if (mo->momz < 0)
{
mo->momz = -mo->momz;
if (!(mo->flags & MF_NOGRAVITY))
{
mo->momz = mo->flags & MF_FLOAT ? mo->flags & MF_DROPOFF ? FixedMul(mo->momz, (int)(FRACUNIT * 0.85)) : FixedMul(mo->momz, (int)(FRACUNIT * 0.70)) : FixedMul(mo->momz, (int)(FRACUNIT * 0.45));
if (D_abs(mo->momz) <= mo->info->mass * (GRAVITY * 4 / 256))
mo->momz = 0;
}
if (mo->flags & MF_TOUCHY && mo->intflags & MIF_ARMED && mo->health > 0)
P_DamageMobj(mo, NULL, NULL, mo->health);
else if (mo->flags & MF_FLOAT && sentient(mo))
goto floater;
return;
}
}
else if (mo->z >= mo->ceilingz - mo->height)
{
mo->z = mo->ceilingz - mo->height;
if (mo->momz > 0)
{
if (mo->subsector->sector->ceilingpic != skyflatnum)
mo->momz = -mo->momz;
else if (mo->flags & MF_MISSILE)
P_RemoveMobj(mo);
else if (mo->flags & MF_NOGRAVITY)
mo->momz = -mo->momz;
if (mo->flags & MF_FLOAT && sentient(mo))
goto floater;
return;
}
}
else
{
if (!(mo->flags & MF_NOGRAVITY))
mo->momz -= mo->info->mass * (GRAVITY / 256);
if (mo->flags & MF_FLOAT && sentient(mo))
goto floater;
return;
}
mo->momz = 0;
if (mo->flags & MF_MISSILE)
{
if (ceilingline && ceilingline->backsector && ceilingline->backsector->ceilingpic == skyflatnum && mo->z > ceilingline->backsector->ceilingheight)
P_RemoveMobj(mo);
else
P_ExplodeMissile(mo);
}
if (mo->flags & MF_FLOAT && sentient(mo))
goto floater;
return;
}
if (mo->player && mo->player->mo == mo && mo->z < mo->floorz)
{
mo->player->viewheight -= mo->floorz-mo->z;
mo->player->deltaviewheight = (VIEWHEIGHT - mo->player->viewheight) >> 3;
}
mo->z += mo->momz;
floater:
if ((mo->flags & MF_FLOAT) && mo->target)
{
if (!((mo->flags ^ MF_FLOAT) & (MF_FLOAT | MF_SKULLFLY | MF_INFLOAT)) && mo->target)
{
int delta = mo->target->z + (mo->height >> 1) - mo->z;
if (P_AproxDistance(mo->x - mo->target->x, mo->y - mo->target->y) < D_abs(delta) * 3)
mo->z += delta < 0 ? -FLOATSPEED : FLOATSPEED;
}
}
if (mo->z <= mo->floorz)
{
if (mo->flags & MF_SKULLFLY)
mo->momz = -mo->momz;
if (mo->momz < 0)
{
if (mo->flags & MF_TOUCHY && mo->intflags & MIF_ARMED && mo->health > 0)
{
P_DamageMobj(mo, NULL, NULL, mo->health);
}
else if (mo->player && mo->player->mo == mo && mo->momz < -GRAVITY * 8)
{
mo->player->deltaviewheight = mo->momz >> 3;
if (mo->health > 0)
S_StartSound (mo, sfx_oof);
}
mo->momz = 0;
}
mo->z = mo->floorz;
if ((mo->flags & MF_MISSILE) && !(mo->flags & MF_NOCLIP))
{
P_ExplodeMissile (mo);
return;
}
}
else if (!(mo->flags & MF_NOGRAVITY))
{
if (!mo->momz)
mo->momz = -GRAVITY;
mo->momz -= GRAVITY;
}
if (mo->z + mo->height > mo->ceilingz)
{
if (mo->flags & MF_SKULLFLY)
mo->momz = -mo->momz;
if (mo->momz > 0)
mo->momz = 0;
mo->z = mo->ceilingz - mo->height;
if ((mo->flags & MF_MISSILE) && !(mo->flags & MF_NOCLIP))
{
P_ExplodeMissile(mo);
return;
}
}
}
static void P_NightmareRespawn(mobj_t *mobj)
{
int x;
int y;
int z;
subsector_t *ss;
mobj_t *mo;
mapthing_t *mthing;
x = mobj->spawnpoint.x << FRACBITS;
y = mobj->spawnpoint.y << FRACBITS;
if (!x && !y)
{
x = mobj->x;
y = mobj->y;
}
if (!P_CheckPosition(mobj, x, y))
return;
mo = P_SpawnMobj(mobj->x, mobj->y, mobj->subsector->sector->floorheight, MT_TFOG);
S_StartSound(mo, sfx_telept);
ss = R_PointInSubsector(x,y);
mo = P_SpawnMobj(x, y, ss->sector->floorheight, MT_TFOG);
S_StartSound (mo, sfx_telept);
mthing = &mobj->spawnpoint;
if (mobj->info->flags & MF_SPAWNCEILING)
z = ONCEILINGZ;
else
z = ONFLOORZ;
mo = P_SpawnMobj(x,y,z, mobj->type);
mo->spawnpoint = mobj->spawnpoint;
mo->angle = ANG45 * (mthing->angle / 45);
if (mthing->options & MTF_AMBUSH)
mo->flags |= MF_AMBUSH;
mo->flags = (mo->flags & ~MF_FRIEND) | (mobj->flags & MF_FRIEND);
mo->reactiontime = 18;
P_RemoveMobj(mobj);
}
void P_MobjThinker(mobj_t *mobj)
{
mobj->PrevX = mobj->x;
mobj->PrevY = mobj->y;
mobj->PrevZ = mobj->z;
if (mobj->momx | mobj->momy || mobj->flags & MF_SKULLFLY)
{
P_XYMovement(mobj);
if (mobj->thinker.function != P_MobjThinker)
return;
}
if (mobj->z != mobj->floorz || mobj->momz)
{
P_ZMovement(mobj);
if (mobj->thinker.function != P_MobjThinker)
return;
}
else if (!(mobj->momx | mobj->momy) && !sentient(mobj))
{
mobj->intflags |= MIF_ARMED;
if (mobj->z > mobj->dropoffz && !(mobj->flags & MF_NOGRAVITY))
P_ApplyTorque(mobj);
else
mobj->intflags &= ~MIF_FALLING, mobj->gear = 0;
}
if (mobj->tics != -1)
{
mobj->tics--;
if (!mobj->tics)
{
if (!P_SetMobjState (mobj, mobj->state->nextstate))
return;
}
}
else
{
if (!(mobj->flags & MF_COUNTKILL))
return;
if (!respawnmonsters)
return;
mobj->movecount++;
if (mobj->movecount < 12 * 35)
return;
if (leveltime & 31)
return;
if (P_Random(pr_respawn) > 4)
return;
P_NightmareRespawn(mobj);
}
}
mobj_t *P_SpawnMobj(int x, int y, int 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;
if (type == MT_PLAYER)
mobj->flags |= MF_FRIEND;
mobj->health = info->spawnhealth;
if (gameskill != sk_nightmare)
mobj->reactiontime = info->reactiontime;
mobj->lastlook = P_Random (pr_lastlook) % MAXPLAYERS;
st = &states[info->spawnstate];
mobj->state = st;
mobj->tics = st->tics;
mobj->sprite = st->sprite;
mobj->frame = st->frame;
mobj->touching_sectorlist = NULL;
P_SetThingPosition(mobj);
mobj->dropoffz = mobj->floorz = mobj->subsector->sector->floorheight;
mobj->ceilingz = mobj->subsector->sector->ceilingheight;
mobj->z = z == ONFLOORZ ? mobj->floorz : z == ONCEILINGZ ? mobj->ceilingz - mobj->height : z;
mobj->PrevX = mobj->x;
mobj->PrevY = mobj->y;
mobj->PrevZ = mobj->z;
mobj->thinker.function = P_MobjThinker;
mobj->friction = ORIG_FRICTION;
mobj->target = mobj->tracer = mobj->lastenemy = NULL;
P_AddThinker(&mobj->thinker);
if (!((mobj->flags ^ MF_COUNTKILL) & (MF_FRIEND | MF_COUNTKILL)))
totallive++;
return mobj;
}
void P_RemoveMobj(mobj_t *mobj)
{
if ((mobj->flags & MF_SPECIAL) && !(mobj->flags & MF_DROPPED) && (mobj->type != MT_INV) && (mobj->type != MT_INS))
{
itemrespawnque[iquehead] = mobj->spawnpoint;
itemrespawntime[iquehead] = leveltime;
iquehead = (iquehead + 1) & (ITEMQUESIZE - 1);
if (iquehead == iquetail)
iquetail = (iquetail + 1) & (ITEMQUESIZE - 1);
}
P_UnsetThingPosition(mobj);
if (sector_list)
{
P_DelSeclist(sector_list);
sector_list = NULL;
}
S_StopSound(mobj);
P_SetTarget(&mobj->target, NULL);
P_SetTarget(&mobj->tracer, NULL);
P_SetTarget(&mobj->lastenemy, NULL);
P_RemoveThinker(&mobj->thinker);
}
static int P_FindDoomedNum(unsigned type)
{
static struct {int first, next;} *hash;
register int i;
if (!hash)
{
hash = Z_Malloc(sizeof *hash * NUMMOBJTYPES, PU_CACHE, (void **)&hash);
for (i = 0; i < NUMMOBJTYPES; i++)
hash[i].first = NUMMOBJTYPES;
for (i = 0; i < NUMMOBJTYPES; i++)
{
if (mobjinfo[i].doomednum != -1)
{
unsigned h = (unsigned)mobjinfo[i].doomednum % NUMMOBJTYPES;
hash[i].next = hash[h].first;
hash[h].first = i;
}
}
}
i = hash[type % NUMMOBJTYPES].first;
while ((i < NUMMOBJTYPES) && ((unsigned)mobjinfo[i].doomednum != type))
i = hash[i].next;
return i;
}
void P_SpawnPlayer(int n, const mapthing_t *mthing)
{
player_t *p;
int x;
int y;
int z;
mobj_t *mobj;
if (!playeringame[n])
return;
p = &players[n];
if (p->playerstate == PST_REBORN)
G_PlayerReborn(mthing->type - 1);
if (!mthing->options)
I_Error("P_SpawnPlayer: attempt to spawn player at unavailable start point");
x = mthing->x << FRACBITS;
y = mthing->y << FRACBITS;
z = ONFLOORZ;
mobj = P_SpawnMobj(x, y, z, MT_PLAYER);
mobj->angle = ANG45 * (mthing->angle / 45);
mobj->player = p;
mobj->health = p->health;
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;
p->momx = p->momy = 0;
P_SetupPsprites(p);
if (mthing->type - 1 == consoleplayer)
{
ST_Start();
HU_Start();
}
}
boolean P_IsDoomnumAllowed(int doomnum)
{
if (gamemode != commercial)
{
switch (doomnum)
{
case 64:
case 65:
case 66:
case 67:
case 68:
case 69:
case 71:
case 84:
case 88:
case 89:
return false;
}
}
return true;
}
void P_SpawnMapThing(const mapthing_t *mthing)
{
int i;
mobj_t *mobj;
int x;
int y;
int z;
int options = mthing->options;
switch (mthing->type)
{
case 0:
case DEN_PLAYER5:
case DEN_PLAYER6:
case DEN_PLAYER7:
case DEN_PLAYER8:
return;
}
if ((options & MTF_RESERVED))
{
I_Error("P_SpawnMapThing: Correcting bad flags (%u) (thing type %d)\n", options, mthing->type);
options &= MTF_EASY | MTF_NORMAL | MTF_HARD | MTF_AMBUSH | MTF_NOTSINGLE;
}
if (mthing->type == 11)
return;
if (mthing->type <= 4 && mthing->type > 0)
{
playerstarts[mthing->type - 1] = *mthing;
playerstarts[mthing->type - 1].options = 1;
P_SpawnPlayer(mthing->type - 1, &playerstarts[mthing->type - 1]);
return;
}
if (options & MTF_NOTSINGLE)
return;
if (gameskill == sk_baby || gameskill == sk_easy ? !(options & MTF_EASY) : gameskill == sk_hard || gameskill == sk_nightmare ? !(options & MTF_HARD) : !(options & MTF_NORMAL))
return;
i = P_FindDoomedNum(mthing->type);
if (i == NUMMOBJTYPES)
{
I_Error("P_SpawnMapThing: Unknown Thing type %i at (%i, %i)", mthing->type, mthing->x, mthing->y);
return;
}
x = mthing->x << FRACBITS;
y = mthing->y << FRACBITS;
if (mobjinfo[i].flags & MF_SPAWNCEILING)
z = ONCEILINGZ;
else
z = ONFLOORZ;
mobj = P_SpawnMobj(x, y, z, i);
mobj->spawnpoint = *mthing;
if (mobj->tics > 0)
mobj->tics = 1 + (P_Random(pr_spawnthing) % mobj->tics);
if (!((mobj->flags ^ MF_COUNTKILL) & (MF_FRIEND | MF_COUNTKILL)))
totalkills++;
if (mobj->flags & MF_COUNTITEM)
totalitems++;
mobj->angle = ANG45 * (mthing->angle / 45);
if (options & MTF_AMBUSH)
mobj->flags |= MF_AMBUSH;
}
void P_SpawnPuff(int x, int y, int z)
{
mobj_t* th;
int t = P_Random(pr_spawnpuff);
z += (t - P_Random(pr_spawnpuff)) << 10;
th = P_SpawnMobj(x, y, z, MT_PUFF);
th->momz = FRACUNIT;
th->tics -= P_Random(pr_spawnpuff) & 3;
if (th->tics < 1)
th->tics = 1;
if (attackrange == MELEERANGE)
P_SetMobjState(th, S_PUFF3);
}
void P_SpawnBlood(int x, int y, int z, int damage)
{
mobj_t *th;
int t = P_Random(pr_spawnblood);
z += (t - P_Random(pr_spawnblood)) << 10;
th = P_SpawnMobj(x, y, z, MT_BLOOD);
th->momz = FRACUNIT * 2;
th->tics -= P_Random(pr_spawnblood) & 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);
}
void P_CheckMissileSpawn (mobj_t* th)
{
th->tics -= P_Random(pr_missile) & 3;
if (th->tics < 1)
th->tics = 1;
th->x += (th->momx >> 1);
th->y += (th->momy >> 1);
th->z += (th->momz >> 1);
if (!(th->flags & MF_MISSILE))
return;
if (!P_TryMove(th, th->x, th->y, false))
P_ExplodeMissile(th);
}
mobj_t *P_SpawnMissile(mobj_t *source, mobj_t *dest, mobjtype_t type)
{
mobj_t* th;
angle_t an;
int dist;
th = P_SpawnMobj(source->x,source->y,source->z + 4 * 8 * FRACUNIT, type);
if (th->info->seesound)
S_StartSound(th, th->info->seesound);
P_SetTarget(&th->target, source);
an = R_PointToAngle2(source->x, source->y, dest->x, dest->y);
if (dest->flags & MF_SHADOW)
{
int t = P_Random(pr_shadow);
an += (t - P_Random(pr_shadow)) << 20;
}
th->angle = an;
an >>= ANGLETOFINESHIFT;
th->momx = FixedMul(th->info->speed, finecosine[an]);
th->momy = FixedMul(th->info->speed, finesine[an]);
dist = P_AproxDistance(dest->x - source->x, dest->y - source->y);
dist = dist / th->info->speed;