/
p_mobj.c
1908 lines (1626 loc) · 51.4 KB
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p_mobj.c
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/**\file
*\section License
* License: GPL
* Online License Link: http://www.gnu.org/licenses/gpl.html
*
*\author Copyright © 2003-2008 Jaakko Keränen <jaakko.keranen@iki.fi>
*\author Copyright © 2006-2008 Daniel Swanson <danij@dengine.net>
*\author Copyright © 1999 Activision
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* p_mobj.c: Moving object handling. Spawn functions.
*/
// HEADER FILES ------------------------------------------------------------
#include <math.h>
#include "jheretic.h"
#include "dmu_lib.h"
#include "hu_stuff.h"
#include "g_common.h"
#include "p_map.h"
#include "p_terraintype.h"
#include "p_player.h"
#include "p_tick.h"
// MACROS ------------------------------------------------------------------
#define VANISHTICS (2*TICSPERSEC)
#define MAX_BOB_OFFSET (8)
#define NOMOMENTUM_THRESHOLD (0.000001f)
#define STOPSPEED (1.0f/1.6/10)
#define STANDSPEED (1.0f/2)
#define ITEMQUEUESIZE (128)
// TYPES -------------------------------------------------------------------
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
mobjtype_t puffType;
mobj_t *missileMobj;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
static spawnspot_t itemRespawnQueue[ITEMQUEUESIZE];
static int itemRespawnTime[ITEMQUEUESIZE];
static int itemRespawnQueueHead, itemRespawnQueueTail;
// CODE --------------------------------------------------------------------
const terraintype_t* P_MobjGetFloorTerrainType(mobj_t* mo)
{
sector_t* sec = P_GetPtrp(mo->subsector, DMU_SECTOR);
return P_GetPlaneMaterialType(sec, PLN_FLOOR);
}
/**
* @return @c true, if the mobj is still present.
*/
boolean P_MobjChangeState(mobj_t* mobj, statenum_t state)
{
state_t* st;
if(state == S_NULL)
{ // Remove mobj.
mobj->state = (state_t *) S_NULL;
P_MobjRemove(mobj, false);
return false;
}
if(mobj->ddFlags & DDMF_REMOTE)
{
Con_Error("P_MobjChangeState: Can't set Remote state!\n");
}
st = &states[state];
P_MobjSetState(mobj, state);
mobj->turnTime = false; // $visangle-facetarget.
if(st->action)
{ // Call action function.
st->action(mobj);
}
return true;
}
/**
* Same as P_MobjChangeState, but does not call the state function.
*/
boolean P_SetMobjStateNF(mobj_t *mobj, statenum_t state)
{
if(state == S_NULL)
{ // Remove mobj.
mobj->state = (state_t *) S_NULL;
P_MobjRemove(mobj, false);
return false;
}
mobj->turnTime = false; // $visangle-facetarget
P_MobjSetState(mobj, state);
return true;
}
void P_ExplodeMissile(mobj_t *mo)
{
if(IS_CLIENT)
{
// Clients won't explode missiles.
P_MobjChangeState(mo, S_NULL);
return;
}
if(mo->type == MT_WHIRLWIND)
{
if(++mo->special2 < 60)
{
return;
}
}
mo->mom[MX] = mo->mom[MY] = mo->mom[MZ] = 0;
P_MobjChangeState(mo, mobjInfo[mo->type].deathState);
if(mo->flags & MF_MISSILE)
{
mo->flags &= ~MF_MISSILE;
mo->flags |= MF_VIEWALIGN;
if(mo->flags & MF_BRIGHTEXPLODE)
mo->flags |= MF_BRIGHTSHADOW;
}
if(mo->info->deathSound)
{
S_StartSound(mo->info->deathSound, mo);
}
}
void P_FloorBounceMissile(mobj_t *mo)
{
mo->mom[MZ] = -mo->mom[MZ];
P_MobjChangeState(mo, mobjInfo[mo->type].deathState);
}
void P_ThrustMobj(mobj_t *mo, angle_t angle, float move)
{
uint an = angle >> ANGLETOFINESHIFT;
mo->mom[MX] += move * FIX2FLT(finecosine[an]);
mo->mom[MY] += move * FIX2FLT(finesine[an]);
}
/**
* @param delta The amount 'source' needs to turn.
*
* @return @c 1, = 'source' needs to turn clockwise, or
* @c 0, = 'source' needs to turn counter clockwise.
*/
int P_FaceMobj(mobj_t *source, mobj_t *target, angle_t *delta)
{
angle_t diff, angle1, angle2;
angle1 = source->angle;
angle2 = R_PointToAngle2(source->pos[VX], source->pos[VY],
target->pos[VX], target->pos[VY]);
if(angle2 > angle1)
{
diff = angle2 - angle1;
if(diff > ANGLE_180)
{
*delta = ANGLE_MAX - diff;
return 0;
}
else
{
*delta = diff;
return 1;
}
}
else
{
diff = angle1 - angle2;
if(diff > ANGLE_180)
{
*delta = ANGLE_MAX - diff;
return 1;
}
else
{
*delta = diff;
return 0;
}
}
}
/**
* The missile tracer field must be the target.
*
* @return @c true, if target was tracked else @c false.
*/
boolean P_SeekerMissile(mobj_t *actor, angle_t thresh, angle_t turnMax)
{
int dir;
uint an;
float dist;
angle_t delta;
mobj_t *target;
target = actor->tracer;
if(target == NULL)
return false;
if(!(target->flags & MF_SHOOTABLE))
{ // Target died.
actor->tracer = NULL;
return false;
}
dir = P_FaceMobj(actor, target, &delta);
if(delta > thresh)
{
delta >>= 1;
if(delta > turnMax)
{
delta = turnMax;
}
}
if(dir)
{ // Turn clockwise.
actor->angle += delta;
}
else
{ // Turn counter clockwise.
actor->angle -= delta;
}
an = actor->angle >> ANGLETOFINESHIFT;
actor->mom[MX] = actor->info->speed * FIX2FLT(finecosine[an]);
actor->mom[MY] = actor->info->speed * FIX2FLT(finesine[an]);
if(actor->pos[VZ] + actor->height < target->pos[VZ] ||
target->pos[VZ] + target->height < actor->pos[VZ])
{ // Need to seek vertically.
dist = P_ApproxDistance(target->pos[VX] - actor->pos[VX],
target->pos[VY] - actor->pos[VY]);
dist /= actor->info->speed;
if(dist < 1)
dist = 1;
actor->mom[MZ] = (target->pos[VZ] - actor->pos[VZ]) / dist;
}
return true;
}
/**
* Wind pushes the mobj, if its sector special is a wind type.
*/
void P_WindThrust(mobj_t *mo)
{
static int windTab[3] = { 2048 * 5, 2048 * 10, 2048 * 25 };
sector_t *sec = P_GetPtrp(mo->subsector, DMU_SECTOR);
int special = P_ToXSector(sec)->special;
switch(special)
{
case 40: // Wind_East
case 41:
case 42:
P_ThrustMobj(mo, 0, FIX2FLT(windTab[special - 40]));
break;
case 43: // Wind_North
case 44:
case 45:
P_ThrustMobj(mo, ANG90, FIX2FLT(windTab[special - 43]));
break;
case 46: // Wind_South
case 47:
case 48:
P_ThrustMobj(mo, ANG270, FIX2FLT(windTab[special - 46]));
break;
case 49: // Wind_West
case 50:
case 51:
P_ThrustMobj(mo, ANG180, FIX2FLT(windTab[special - 49]));
break;
default:
break;
}
}
float P_MobjGetFriction(mobj_t *mo)
{
if((mo->flags2 & MF2_FLY) && !(mo->pos[VZ] <= mo->floorZ) && !mo->onMobj)
{
return FRICTION_FLY;
}
else
{
sector_t *sec = P_GetPtrp(mo->subsector, DMU_SECTOR);
if(P_ToXSector(sec)->special == 15)
{
return FRICTION_LOW;
}
return XS_Friction(sec);
}
}
void P_MobjMoveXY(mobj_t *mo)
{
float pos[2], mom[2];
player_t *player;
boolean largeNegative;
// $democam: cameramen have their own movement code
if(P_CameraXYMovement(mo))
return;
mom[VX] = mo->mom[MX] = CLAMP(mo->mom[MX], -MAXMOVE, MAXMOVE);
mom[VY] = mo->mom[MY] = CLAMP(mo->mom[MY], -MAXMOVE, MAXMOVE);
if(mom[VX] == 0 && mom[VY] == 0)
{
if(mo->flags & MF_SKULLFLY)
{ // A flying mobj slammed into something.
mo->flags &= ~MF_SKULLFLY;
mo->mom[MX] = mo->mom[MY] = mo->mom[MZ] = 0;
P_MobjChangeState(mo, mo->info->seeState);
}
return;
}
if(mo->flags2 & MF2_WINDTHRUST)
P_WindThrust(mo);
player = mo->player;
do
{
/**
* DOOM.exe bug fix:
* Large negative displacements were never considered. This explains
* the tendency for Mancubus fireballs to pass through walls.
*/
largeNegative = false;
if(!cfg.moveBlock &&
(mom[VX] < -MAXMOVE / 2 || mom[VY] < -MAXMOVE / 2))
{
// Make an exception for "north-only wallrunning".
if(!(cfg.wallRunNorthOnly && mo->wallRun))
largeNegative = true;
}
if(largeNegative || mom[VX] > MAXMOVE / 2 || mom[VY] > MAXMOVE / 2)
{
pos[VX] = mo->pos[VX] + (mom[VX] /= 2);
pos[VY] = mo->pos[VY] + (mom[VY] /= 2);
}
else
{
pos[VX] = mo->pos[VX] + mom[VX];
pos[VY] = mo->pos[VY] + mom[VY];
mom[VX] = mom[VY] = 0;
}
// If mobj was wallrunning - stop.
if(mo->wallRun)
mo->wallRun = false;
// $dropoff_fix
if(!P_TryMove(mo, pos[VX], pos[VY], true, false))
{ // Blocked mom.
if(mo->flags2 & MF2_SLIDE)
{ // Try to slide along it.
P_SlideMove(mo);
}
else if(mo->flags & MF_MISSILE)
{ // Explode a missile
sector_t* backSec;
//// kludge: Prevent missiles exploding against the sky.
if(ceilingLine &&
(backSec = P_GetPtrp(ceilingLine, DMU_BACK_SECTOR)))
{
if(P_GetIntp(backSec,
DMU_CEILING_MATERIAL) == SKYMASKMATERIAL &&
mo->pos[VZ] > P_GetFloatp(backSec, DMU_CEILING_HEIGHT))
{
if(mo->type == MT_BLOODYSKULL)
{
mo->mom[MX] = mo->mom[MY] = 0;
mo->mom[MZ] = -1;
}
else
{
P_MobjRemove(mo, false);
}
return;
}
}
if(floorLine &&
(backSec = P_GetPtrp(floorLine, DMU_BACK_SECTOR)))
{
if(P_GetIntp(backSec,
DMU_FLOOR_MATERIAL) == SKYMASKMATERIAL &&
mo->pos[VZ] < P_GetFloatp(backSec, DMU_FLOOR_HEIGHT))
{
if(mo->type == MT_BLOODYSKULL)
{
mo->mom[MX] = mo->mom[MY] = 0;
mo->mom[MZ] = -1;
}
else
{
P_MobjRemove(mo, false);
}
return;
}
}
//// kludge end.
P_ExplodeMissile(mo);
}
else
{
mo->mom[MX] = mo->mom[MY] = 0;
}
}
} while(!INRANGE_OF(mom[MX], 0, NOMOMENTUM_THRESHOLD) ||
!INRANGE_OF(mom[MY], 0, NOMOMENTUM_THRESHOLD));
// Slow down.
if(player && (P_GetPlayerCheats(player) & CF_NOMOMENTUM))
{
// Debug option for no sliding at all
mo->mom[MX] = mo->mom[MY] = 0;
return;
}
if(mo->flags & (MF_MISSILE | MF_SKULLFLY))
{ // No friction for missiles.
return;
}
if(mo->pos[VZ] > mo->floorZ && !mo->onMobj && !(mo->flags2 & MF2_FLY))
{ // No friction when falling.
return;
}
if(cfg.slidingCorpses)
{
/**
* $dropoff_fix:
* Add objects falling off ledges. Does not apply to players!
*/
if(((mo->flags & MF_CORPSE) || (mo->intFlags & MIF_FALLING)) &&
!mo->player)
{ // Do not stop sliding.
// If halfway off a step with some momentum.
if(mo->mom[MX] > 1.0f / 4 || mo->mom[MX] < -1.0f / 4 ||
mo->mom[MY] > 1.0f / 4 || mo->mom[MY] < -1.0f / 4)
{
if(mo->floorZ !=
P_GetFloatp(mo->subsector, DMU_FLOOR_HEIGHT))
return;
}
}
}
// Stop player walking animation.
if(player && !player->plr->cmd.forwardMove && !player->plr->cmd.sideMove &&
mo->mom[MX] > -STANDSPEED && mo->mom[MX] < STANDSPEED &&
mo->mom[MY] > -STANDSPEED && mo->mom[MY] < STANDSPEED)
{
// If in a walking frame, stop moving.
if((unsigned) ((player->plr->mo->state - states) - PCLASS_INFO(player->class)->runState) < 4)
P_MobjChangeState(player->plr->mo, PCLASS_INFO(player->class)->normalState);
}
if((!player || (player->plr->cmd.forwardMove == 0 && player->plr->cmd.sideMove == 0)) &&
mo->mom[MX] > -STOPSPEED && mo->mom[MX] < STOPSPEED &&
mo->mom[MY] > -STOPSPEED && mo->mom[MY] < STOPSPEED)
{
mo->mom[MX] = 0;
mo->mom[MY] = 0;
}
else
{
if((mo->flags2 & MF2_FLY) && !(mo->pos[VZ] <= mo->floorZ) &&
!mo->onMobj)
{
mo->mom[MX] *= FRICTION_FLY;
mo->mom[MY] *= FRICTION_FLY;
}
else
{
#if __JHERETIC__
if(P_ToXSector(P_GetPtrp(mo->subsector, DMU_SECTOR))->special == 15)
{
// Friction_Low
mo->mom[MX] *= FRICTION_LOW;
mo->mom[MY] *= FRICTION_LOW;
}
else
#endif
{
float friction = P_MobjGetFriction(mo);
mo->mom[MX] *= friction;
mo->mom[MY] *= friction;
}
}
}
}
void P_MobjMoveZ(mobj_t *mo)
{
float gravity;
float dist;
float delta;
// $democam: cameramen get special z movement
if(P_CameraZMovement(mo))
return;
gravity = XS_Gravity(P_GetPtrp(mo->subsector, DMU_SECTOR));
// Check for smooth step up.
if(mo->player && mo->pos[VZ] < mo->floorZ)
{
mo->dPlayer->viewHeight -= mo->floorZ - mo->pos[VZ];
mo->dPlayer->viewHeightDelta =
(cfg.plrViewHeight - mo->dPlayer->viewHeight) / 8;
}
// Adjust height.
mo->pos[VZ] += mo->mom[MZ];
if((mo->flags2 & MF2_FLY) &&
mo->onMobj && mo->pos[VZ] > mo->onMobj->pos[VZ] + mo->onMobj->height)
mo->onMobj = NULL; // We were on a mobj, we are NOT now.
if((mo->flags & MF_FLOAT) && mo->target && !P_IsCamera(mo->target))
{
// Float down towards target if too close.
if(!(mo->flags & MF_SKULLFLY) && !(mo->flags & MF_INFLOAT))
{
dist = P_ApproxDistance(mo->pos[VX] - mo->target->pos[VX],
mo->pos[VY] - mo->target->pos[VY]);
delta = (mo->target->pos[VZ] + mo->target->height /2) -
(mo->pos[VZ] + mo->height /2);
if(dist < mo->radius + mo->target->radius &&
fabs(delta) < mo->height + mo->target->height)
{ // Don't go INTO the target.
delta = 0;
}
if(delta < 0 && dist < -(delta * 3))
{
mo->pos[VZ] -= FLOATSPEED;
P_MobjSetSRVOZ(mo, -FLOATSPEED);
}
else if(delta > 0 && dist < (delta * 3))
{
mo->pos[VZ] += FLOATSPEED;
P_MobjSetSRVOZ(mo, FLOATSPEED);
}
}
}
// Do some fly-bobbing.
if(mo->player && (mo->flags2 & MF2_FLY) && mo->pos[VZ] > mo->floorZ &&
!mo->onMobj && (levelTime & 2))
{
mo->pos[VZ] += FIX2FLT(finesine[(FINEANGLES / 20 * levelTime >> 2) & FINEMASK]);
}
// Clip movement. Another thing?
if(mo->onMobj && mo->pos[VZ] <= mo->onMobj->pos[VZ] + mo->onMobj->height)
{
if(mo->mom[MZ] < 0)
{
if(mo->player && mo->mom[MZ] < -gravity * 8 && !(mo->flags2 & MF2_FLY))
{
// Squat down. Decrease viewheight for a moment after
// hitting the ground (hard), and utter appropriate sound.
mo->dPlayer->viewHeightDelta = mo->mom[MZ] / 8;
if(mo->player->health > 0)
S_StartSound(SFX_PLROOF, mo);
}
mo->mom[MZ] = 0;
}
if(mo->mom[MZ] == 0)
mo->pos[VZ] = mo->onMobj->pos[VZ] + mo->onMobj->height;
if((mo->flags & MF_MISSILE) && !(mo->flags & MF_NOCLIP))
{
P_ExplodeMissile(mo);
return;
}
}
// The floor.
if(mo->pos[VZ] <= mo->floorZ)
{ // Hit the floor.
boolean movingDown;
// Note (id):
// somebody left this after the setting mom[MZ] to 0,
// kinda useless there.
//
// cph - This was the a bug in the linuxdoom-1.10 source which
// caused it not to sync Doom 2 v1.9 demos. Someone
// added the above comment and moved up the following code. So
// demos would desync in close lost soul fights.
// Note that this only applies to original Doom 1 or Doom2 demos - not
// Final Doom and Ultimate Doom. So we test demo_compatibility *and*
// gamemission. (Note we assume that Doom1 is always Ult Doom, which
// seems to hold for most published demos.)
//
// fraggle - cph got the logic here slightly wrong. There are three
// versions of Doom 1.9:
//
// * The version used in registered doom 1.9 + doom2 - no bounce
// * The version used in ultimate doom - has bounce
// * The version used in final doom - has bounce
//
// So we need to check that this is either retail or commercial
// (but not doom2)
int correct_lost_soul_bounce = false;
if(correct_lost_soul_bounce && (mo->flags & MF_SKULLFLY))
{
// the skull slammed into something
mo->mom[MZ] = -mo->mom[MZ];
}
if(movingDown = (mo->mom[MZ] < 0))
{
if(mo->player && mo->mom[MZ] < -gravity * 8 && !(mo->flags2 & MF2_FLY))
{
// Squat down. Decrease viewheight for a moment after
// hitting the ground hard and utter appropriate sound.
mo->player->plr->viewHeightDelta = mo->mom[MZ] / 8;
#if __JHERETIC__
mo->player->jumpTics = 12; // Can't jump in a while.
#endif
// Fix DOOM bug - dead players grunting when hitting the ground
// (e.g., after an archvile attack)
if(mo->player->health > 0)
S_StartSound(SFX_PLROOF, mo);
}
}
mo->pos[VZ] = mo->floorZ;
if(movingDown)
P_HitFloor(mo);
// cph 2001/05/26 -
// See lost soul bouncing comment above. We need this here for bug
// compatibility with original Doom2 v1.9 - if a soul is charging and
// hit by a raising floor this incorrectly reverses its Y momentum.
if(!correct_lost_soul_bounce && (mo->flags & MF_SKULLFLY))
mo->mom[MZ] = -mo->mom[MZ];
if((mo->flags & MF_MISSILE) && !(mo->flags & MF_NOCLIP))
{
if(mo->flags2 & MF2_FLOORBOUNCE)
{
P_FloorBounceMissile(mo);
return;
}
#if __JHERETIC__
else if(mo->type == MT_MNTRFX2)
{ // Minotaur floor fire can go up steps
return;
}
else
#endif
{
P_ExplodeMissile(mo);
return;
}
}
if(movingDown && mo->mom[MZ] < 0)
mo->mom[MZ] = 0;
#if __JHERETIC__
if(mo->info->crashState && (mo->flags & MF_CORPSE))
{
P_MobjChangeState(mo, mo->info->crashState);
return;
}
#endif
}
else if(mo->flags2 & MF2_LOGRAV)
{
if(mo->mom[MZ] == 0)
mo->mom[MZ] = -(gravity / 8) * 2;
else
mo->mom[MZ] -= gravity / 8;
}
else if(!(mo->flags & MF_NOGRAVITY))
{
if(mo->mom[MZ] == 0)
mo->mom[MZ] = -gravity * 2;
else
mo->mom[MZ] -= gravity;
}
if(mo->pos[VZ] + mo->height > mo->ceilingZ)
{
// hit the ceiling
if(mo->mom[MZ] > 0)
mo->mom[MZ] = 0;
mo->pos[VZ] = mo->ceilingZ - mo->height;
if(mo->flags & MF_SKULLFLY)
{ // the skull slammed into something
mo->mom[MZ] = -mo->mom[MZ];
}
if((mo->flags & MF_MISSILE) && !(mo->flags & MF_NOCLIP))
{
if(P_GetIntp(mo->subsector, DMU_CEILING_MATERIAL) == SKYMASKMATERIAL)
{
#if __JHERETIC__
if(mo->type == MT_BLOODYSKULL)
{
mo->mom[MX] = mo->mom[MY] = 0;
mo->mom[MZ] = -1;
}
else
#endif
// Don't explode against sky.
{
P_MobjRemove(mo, false);
}
return;
}
P_ExplodeMissile(mo);
return;
}
}
}
void P_NightmareRespawn(mobj_t *mobj)
{
float pos[3];
subsector_t *ss;
mobj_t *mo;
pos[VX] = mobj->spawnSpot.pos[VX];
pos[VY] = mobj->spawnSpot.pos[VY];
pos[VZ] = mobj->spawnSpot.pos[VZ];
// Something is occupying it's position?
if(!P_CheckPosition2f(mobj, pos[VX], pos[VY]))
return; // No respwan.
// Spawn a teleport fog at old spot because of removal of the body?
mo = P_SpawnMobj3f(MT_TFOG, mobj->pos[VX], mobj->pos[VY],
P_GetFloatp(mobj->subsector, DMU_FLOOR_HEIGHT) + TELEFOGHEIGHT,
mobj->angle);
// Initiate teleport sound.
S_StartSound(SFX_TELEPT, mo);
// Spawn a teleport fog at the new spot.
ss = R_PointInSubsector(pos[VX], pos[VY]);
mo = P_SpawnMobj3f(MT_TFOG, pos[VX], pos[VY],
P_GetFloatp(ss, DMU_FLOOR_HEIGHT) + TELEFOGHEIGHT,
mobj->spawnSpot.angle);
S_StartSound(SFX_TELEPT, mo);
if(mobj->info->flags & MF_SPAWNCEILING)
pos[VZ] = ONCEILINGZ;
else
pos[VZ] = ONFLOORZ;
// Inherit attributes from deceased one.
mo = P_SpawnMobj3fv(mobj->type, pos, mobj->spawnSpot.angle);
memcpy(&mo->spawnSpot, &mobj->spawnSpot, sizeof(mo->spawnSpot));
if(mobj->spawnSpot.flags & MTF_AMBUSH)
mo->flags |= MF_AMBUSH;
mo->reactionTime = 18;
// Remove the old monster.
P_MobjRemove(mobj, true);
}
void P_MobjThinker(mobj_t *mobj)
{
if(mobj->ddFlags & DDMF_REMOTE)
return; // Remote mobjs are handled separately.
if(mobj->type == MT_BLASTERFX1)
{
int i;
float frac[3];
float z;
boolean changexy;
// Handle movement
if(mobj->mom[MX] != 0 || mobj->mom[MY] != 0 || mobj->mom[MZ] != 0 ||
(mobj->pos[VZ] != mobj->floorZ))
{
frac[MX] = mobj->mom[MX] / 8;
frac[MY] = mobj->mom[MY] / 8;
frac[MZ] = mobj->mom[MZ] / 8;
changexy = (frac[MX] != 0 || frac[MY] != 0);
for(i = 0; i < 8; ++i)
{
if(changexy)
{
if(!P_TryMove(mobj, mobj->pos[VX] + frac[MX],
mobj->pos[VY] + frac[MY], false, false))
{ // Blocked move.
P_ExplodeMissile(mobj);
return;
}
}
mobj->pos[VZ] += frac[MZ];
if(mobj->pos[VZ] <= mobj->floorZ)
{ // Hit the floor.
mobj->pos[VZ] = mobj->floorZ;
P_HitFloor(mobj);
P_ExplodeMissile(mobj);
return;
}
if(mobj->pos[VZ] + mobj->height > mobj->ceilingZ)
{ // Hit the ceiling.
mobj->pos[VZ] = mobj->ceilingZ - mobj->height;
P_ExplodeMissile(mobj);
return;
}
if(changexy && (P_Random() < 64))
{
z = mobj->pos[VZ] - 8;
if(z < mobj->floorZ)
{
z = mobj->floorZ;
}
P_SpawnMobj3f(MT_BLASTERSMOKE, mobj->pos[VX], mobj->pos[VY],
z, P_Random() << 24);
}
}
}
// Advance the state.
if(mobj->tics != -1)
{
mobj->tics--;
while(!mobj->tics)
{
if(!P_MobjChangeState(mobj, mobj->state->nextState))
{ // Mobj was removed.
return;
}
}
}
return;
}
#if __JDOOM__
// Spectres get selector = 1.
if(mobj->type == MT_SHADOWS)
mobj->selector = (mobj->selector & ~DDMOBJ_SELECTOR_MASK) | 1;
#endif
// The first three bits of the selector special byte contain a relative
// health level.
P_UpdateHealthBits(mobj);
// Handle X and Y momentums.
if(mobj->mom[MX] != 0 || mobj->mom[MY] != 0 ||
(mobj->flags & MF_SKULLFLY))
{
P_MobjMoveXY(mobj);
//// \fixme decent NOP/NULL/Nil function pointer please.
if(mobj->thinker.function == NOPFUNC)
return; // Mobj was removed.
}
if(mobj->flags2 & MF2_FLOATBOB)
{ // Floating item bobbing motion.
// Keep it on the floor.
mobj->pos[VZ] = mobj->floorZ;
// Negative floorclip raises the mobj off the floor.
mobj->floorClip = -mobj->special1;
if(mobj->floorClip < -MAX_BOB_OFFSET)
{
// We don't want it going through the floor.
mobj->floorClip = -MAX_BOB_OFFSET;
}
}
else if(mobj->pos[VZ] != mobj->floorZ || mobj->mom[MZ] != 0)
{
P_MobjMoveZ(mobj);
if(mobj->thinker.function != P_MobjThinker)
return; // mobj was removed
}
// Non-sentient objects at rest.
else if(!(mobj->mom[MX] != 0 || mobj->mom[MY] != 0) && !sentient(mobj) &&
!(mobj->player) && !((mobj->flags & MF_CORPSE) &&
cfg.slidingCorpses))
{
/**
* Objects fall off ledges if they are hanging off slightly push off
* of ledge if hanging more than halfway off.
*/
if(mobj->pos[VZ] > mobj->dropOffZ && // Only objects contacting dropoff
!(mobj->flags & MF_NOGRAVITY) && cfg.fallOff)
{
P_ApplyTorque(mobj);
}
else
{
mobj->intFlags &= ~MIF_FALLING;
mobj->gear = 0; // Reset torque.
}
}
if(cfg.slidingCorpses)
{
if(((mobj->flags & MF_CORPSE) ? mobj->pos[VZ] > mobj->dropOffZ :
mobj->pos[VZ] - mobj->dropOffZ > 24) && // Only objects contacting drop off.
!(mobj->flags & MF_NOGRAVITY)) // Only objects which fall.
{
P_ApplyTorque(mobj); // Apply torque.
}
else
{
mobj->intFlags &= ~MIF_FALLING;
mobj->gear = 0; // Reset torque.
}
}
// $vanish: dead monsters disappear after some time.
if(cfg.corpseTime && (mobj->flags & MF_CORPSE) && mobj->corpseTics != -1)