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p_enemy.c
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p_enemy.c
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/** @file p_enemy.c Enemy thinking, AI.
*
* Action Pointer Functions that are associated with states/frames.
*
* Enemies are allways spawned with targetplayer = -1, threshold = 0
* Most monsters are spawned unaware of all players,
* but some can be made preaware
*
* @authors Copyright © 2003-2013 Jaakko Keränen <jaakko.keranen@iki.fi>
* @authors Copyright © 2005-2013 Daniel Swanson <danij@dengine.net>
* @authors Copyright © 2003-2005 Samuel Villarreal <svkaiser@gmail.com>
* @authors Copyright © 1999 by Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman (PrBoom 2.2.6)
* @authors Copyright © 1999-2000 by Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze (PrBoom 2.2.6)
* @authors Copyright © 1993-1996 by id Software, Inc.
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>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</small>
*/
#include <math.h>
#ifdef MSVC
# pragma optimize("g", off)
#endif
#include "jdoom64.h"
#include "dmu_lib.h"
#include "p_map.h"
#include "p_mapspec.h"
#include "p_door.h"
#include "p_floor.h"
#include "p_actor.h"
#define FATSPREAD (ANG90/8)
#define FAT_DELTAANGLE (85*ANGLE_1) // jd64
#define FAT_ARM_EXTENSION_SHORT (32) // jd64
#define FAT_ARM_EXTENSION_LONG (16) // jd64
#define FAT_ARM_HEIGHT (64) // jd64
#define SKULLSPEED (20)
#define TRACEANGLE (0xc000000)
// Eight directional movement speeds.
#define MOVESPEED_DIAGONAL (0.71716309f)
static coord_t const dirSpeed[8][2] =
{
{1, 0},
{MOVESPEED_DIAGONAL, MOVESPEED_DIAGONAL},
{0, 1},
{-MOVESPEED_DIAGONAL, MOVESPEED_DIAGONAL},
{-1, 0},
{-MOVESPEED_DIAGONAL, -MOVESPEED_DIAGONAL},
{0, -1},
{MOVESPEED_DIAGONAL, -MOVESPEED_DIAGONAL}
};
#undef MOVESPEED_DIAGONAL
/**
* If a monster yells at a player, it will alert other monsters to the
* player's whereabouts.
*/
void P_NoiseAlert(mobj_t *target, mobj_t *emitter)
{
VALIDCOUNT++;
P_RecursiveSound(target, Mobj_Sector(emitter), 0);
}
static dd_bool checkMeleeRange(mobj_t *actor)
{
mobj_t *pl;
coord_t dist, range;
if(!actor->target)
return false;
pl = actor->target;
dist = M_ApproxDistance(pl->origin[VX] - actor->origin[VX],
pl->origin[VY] - actor->origin[VY]);
if(!cfg.netNoMaxZMonsterMeleeAttack)
{
// Account for Z height difference.
if(pl->origin[VZ] > actor->origin[VZ] + actor->height ||
pl->origin[VZ] + pl->height < actor->origin[VZ])
return false;
}
range = MELEERANGE - 20 + pl->info->radius;
if(dist >= range)
return false;
if(!P_CheckSight(actor, actor->target))
return false;
return true;
}
static dd_bool checkMissileRange(mobj_t* actor)
{
coord_t dist;
if(!P_CheckSight(actor, actor->target))
return false;
if(actor->flags & MF_JUSTHIT)
{
// The target just hit the enemy, so fight back!
actor->flags &= ~MF_JUSTHIT;
return true;
}
if(actor->reactionTime)
return false; // Do not attack yet.
dist = M_ApproxDistance(actor->origin[VX] - actor->target->origin[VX],
actor->origin[VY] - actor->target->origin[VY]) - 64;
if(P_GetState(actor->type, SN_MELEE) == S_NULL)
dist -= 128; // No melee attack, so fire more.
if(actor->type == MT_CYBORG || actor->type == MT_SKULL)
{
dist /= 2;
}
if(dist > 200)
dist = 200;
if(actor->type == MT_CYBORG && dist > 160)
dist = 160;
if((coord_t)P_Random() < dist)
return false;
return true;
}
/**
* Move in the current direction. $dropoff_fix
*
* @return @c false, if the move is blocked.
*/
static dd_bool moveMobj(mobj_t *actor, dd_bool dropoff)
{
coord_t pos[3], step[3];
Line *ld;
dd_bool good;
if(actor->moveDir == DI_NODIR)
return false;
if(!VALID_MOVEDIR(actor->moveDir))
Con_Error("Weird actor->moveDir!");
step[VX] = actor->info->speed * dirSpeed[actor->moveDir][MX];
step[VY] = actor->info->speed * dirSpeed[actor->moveDir][MY];
pos[VX] = actor->origin[VX] + step[VX];
pos[VY] = actor->origin[VY] + step[VY];
// $dropoff_fix
if(!P_TryMoveXY(actor, pos[VX], pos[VY], dropoff, false))
{
// Float up and down to the contacted floor height.
if((actor->flags & MF_FLOAT) && tmFloatOk)
{
if(actor->origin[VZ] < tmFloorZ)
actor->origin[VZ] += FLOATSPEED;
else
actor->origin[VZ] -= FLOATSPEED;
// What if we just floated into another mobj??
actor->flags |= MF_INFLOAT;
return true;
}
// Open any specials.
if(IterList_Empty(spechit)) return false;
actor->moveDir = DI_NODIR;
good = false;
while((ld = IterList_Pop(spechit)) != NULL)
{
/**
* If the special is not a door that can be opened, return false.
*
* $unstuck: This is what caused monsters to get stuck in
* doortracks, because it thought that the monster freed itself
* by opening a door, even if it was moving towards the
* doortrack, and not the door itself.
*
* If a line blocking the monster is activated, return true 90%
* of the time. If a line blocking the monster is not activated,
* but some other line is, return false 90% of the time.
* A bit of randomness is needed to ensure it's free from
* lockups, but for most cases, it returns the correct result.
*
* Do NOT simply return false 1/4th of the time (causes monsters
* to back out when they shouldn't, and creates secondary
* stickiness).
*/
if(P_ActivateLine(ld, actor, 0, SPAC_USE))
good |= ld == tmBlockingLine ? 1 : 2;
}
if(!good || cfg.monstersStuckInDoors)
return good;
else
return (P_Random() >= 230) || (good & 1);
}
else
{
P_MobjSetSRVO(actor, step[VX], step[VY]);
actor->flags &= ~MF_INFLOAT;
}
// $dropoff_fix: fall more slowly, under gravity, if tmFellDown==true
if(!(actor->flags & MF_FLOAT) && !tmFellDown)
{
if(actor->origin[VZ] > actor->floorZ)
P_HitFloor(actor);
actor->origin[VZ] = actor->floorZ;
}
return true;
}
/**
* Attempts to move actor on in its current (ob->moveangle) direction.
* If blocked by either a wall or an actor returns FALSE
* If move is either clear or blocked only by a door, returns TRUE and sets...
* If a door is in the way, an OpenDoor call is made to start it opening.
*/
static dd_bool tryMoveMobj(mobj_t *actor)
{
// $dropoff_fix
if(!moveMobj(actor, false))
{
return false;
}
actor->moveCount = P_Random() & 15;
return true;
}
static void doNewChaseDir(mobj_t *actor, coord_t deltaX, coord_t deltaY)
{
dirtype_t xdir, ydir, tdir;
dirtype_t olddir = actor->moveDir;
dirtype_t turnaround = olddir;
if(turnaround != DI_NODIR) // Find reverse direction.
turnaround ^= 4;
xdir = (deltaX > 10 ? DI_EAST : deltaX < -10 ? DI_WEST : DI_NODIR);
ydir = (deltaY < -10 ? DI_SOUTH : deltaY > 10 ? DI_NORTH : DI_NODIR);
// Try direct route.
if(xdir != DI_NODIR && ydir != DI_NODIR &&
turnaround != (actor->moveDir =
deltaY < 0 ? deltaX >
0 ? DI_SOUTHEAST : DI_SOUTHWEST : deltaX >
0 ? DI_NORTHEAST : DI_NORTHWEST) && tryMoveMobj(actor))
return;
// Try other directions.
if(P_Random() > 200 || fabs(deltaY) > fabs(deltaX))
{
dirtype_t temp = xdir;
xdir = ydir;
ydir = temp;
}
if((xdir == turnaround ? xdir = DI_NODIR : xdir) != DI_NODIR &&
(actor->moveDir = xdir, tryMoveMobj(actor)))
return; // Either moved forward or attacked.
if((ydir == turnaround ? ydir = DI_NODIR : ydir) != DI_NODIR &&
(actor->moveDir = ydir, tryMoveMobj(actor)))
return;
// There is no direct path to the player, so pick another direction.
if(olddir != DI_NODIR && (actor->moveDir = olddir, tryMoveMobj(actor)))
return;
// Randomly determine direction of search.
if(P_Random() & 1)
{
for(tdir = DI_EAST; tdir <= DI_SOUTHEAST; tdir++)
if(tdir != turnaround &&
(actor->moveDir = tdir, tryMoveMobj(actor)))
return;
}
else
{
for(tdir = DI_SOUTHEAST; tdir != DI_EAST - 1; tdir--)
if(tdir != turnaround &&
(actor->moveDir = tdir, tryMoveMobj(actor)))
return;
}
if((actor->moveDir = turnaround) != DI_NODIR && !tryMoveMobj(actor))
actor->moveDir = DI_NODIR;
}
typedef struct {
mobj_t *averterMobj; ///< Mobj attempting to avert the drop off.
AABoxd averterAABox; ///< Current axis-aligned bounding box of the averter.
vec2d_t direction; ///< Direction in which to move to avoid the drop off.
} pit_avoiddropoff_params_t;
static int PIT_AvoidDropoff(Line *line, void *context)
{
pit_avoiddropoff_params_t *parm = (pit_avoiddropoff_params_t *)context;
Sector *backsector = P_GetPtrp(line, DMU_BACK_SECTOR);
AABoxd *aaBox = P_GetPtrp(line, DMU_BOUNDING_BOX);
if(backsector &&
// Line must be contacted
parm->averterAABox.minX < aaBox->maxX &&
parm->averterAABox.maxX > aaBox->minX &&
parm->averterAABox.minY < aaBox->maxY &&
parm->averterAABox.maxY > aaBox->minY &&
!Line_BoxOnSide(line, &parm->averterAABox))
{
Sector *frontsector = P_GetPtrp(line, DMU_FRONT_SECTOR);
coord_t front = P_GetDoublep(frontsector, DMU_FLOOR_HEIGHT);
coord_t back = P_GetDoublep(backsector, DMU_FLOOR_HEIGHT);
vec2d_t lineDir;
angle_t angle;
uint an;
P_GetDoublepv(line, DMU_DXY, lineDir);
// The monster must contact one of the two floors, and the other must be
// a tall drop off (more than 24).
if(FEQUAL(back, parm->averterMobj->floorZ) &&
front < parm->averterMobj->floorZ - 24)
{
angle = M_PointToAngle(lineDir); // Front drop off.
}
else
{
if(FEQUAL(front, parm->averterMobj->floorZ) &&
back < parm->averterMobj->floorZ - 24)
{
angle = M_PointXYToAngle(-lineDir[0], -lineDir[1]); // Back drop off.
}
return false;
}
// Move away from drop off at a standard speed.
// Multiple contacted lines are cumulative (e.g., hanging over a corner).
an = angle >> ANGLETOFINESHIFT;
parm->direction[VX] -= FIX2FLT(finesine [an]) * 32;
parm->direction[VY] += FIX2FLT(finecosine[an]) * 32;
}
return false;
}
/**
* Monsters try to move away from tall drop offs. (From PrBoom.)
*
* In Doom, they were never allowed to hang over drop offs, and would remain
* stuck if involuntarily forced over one. This logic, combined with
* p_map.c::P_TryMoveXY(), allows monsters to free themselves without making
* them tend to hang over drop offs.
*
* @param chaseDir Direction in which the mobj is currently "chasing". If a
* drop off is found, this direction will be updated with a
* direction that will take the mobj back onto terra firma.
*
* @return @c true iff the direction was changed to avoid a drop off.
*/
static dd_bool shouldAvoidDropoff(mobj_t *mobj, pvec2d_t chaseDir)
{
pit_avoiddropoff_params_t parm;
DENG_ASSERT(mobj != 0);
// Disabled? (inverted var name!)
if(cfg.avoidDropoffs) return false;
if(mobj->floorZ - mobj->dropOffZ <= 24) return false;
if(mobj->origin[VZ] > mobj->floorZ) return false;
if(mobj->flags & (MF_DROPOFF | MF_FLOAT)) return false;
parm.averterMobj = mobj;
parm.averterAABox.minX = mobj->origin[VX] - mobj->radius;
parm.averterAABox.minY = mobj->origin[VY] - mobj->radius;
parm.averterAABox.maxX = mobj->origin[VX] + mobj->radius;
parm.averterAABox.maxY = mobj->origin[VY] + mobj->radius;
V2d_Set(parm.direction, 0, 0);
VALIDCOUNT++;
Mobj_TouchedLinesIterator(mobj, PIT_AvoidDropoff, &parm);
if(FEQUAL(parm.direction[VX], 0) && FEQUAL(parm.direction[VY], 0))
return false;
// The mobj should attempt to move away from the drop off.
V2d_Copy(chaseDir, parm.direction);
return true;
}
static void newChaseDir(mobj_t *mobj)
{
vec2d_t chaseDir;
dd_bool avoiding;
DENG_ASSERT(mobj != 0);
// Nothing to chase?
if(!mobj->target) return;
// Chase toward the target, unless there is a drop off to avoid.
V2d_Subtract(chaseDir, mobj->target->origin, mobj->origin);
avoiding = shouldAvoidDropoff(mobj, chaseDir);
// Apply the direction change (if any).
doNewChaseDir(mobj, chaseDir[VX], chaseDir[VY]);
if(avoiding)
{
// Take small steps away from the drop off.
mobj->moveCount = 1;
}
}
static int massacreMobj(thinker_t *th, void *context)
{
int *count = (int*) context;
mobj_t *mo = (mobj_t *) th;
if(!mo->player && sentient(mo) && (mo->flags & MF_SHOOTABLE))
{
P_DamageMobj(mo, NULL, NULL, 10000, false);
(*count)++;
}
return false; // Continue iteration.
}
/**
* Kills all monsters.
*/
int P_Massacre(void)
{
int count = 0;
// Only massacre when actually in a map.
if(G_GameState() == GS_MAP)
{
Thinker_Iterate(P_MobjThinker, massacreMobj, &count);
}
return count;
}
typedef struct {
mobjtype_t type;
size_t count;
} countmobjoftypeparams_t;
static int countMobjOfType(thinker_t* th, void* context)
{
countmobjoftypeparams_t *params = (countmobjoftypeparams_t*) context;
mobj_t* mo = (mobj_t *) th;
if(params->type == mo->type && mo->health > 0)
params->count++;
return false; // Continue iteration.
}
/**
* DJS - Next up we have an obscene amount of repetion; 15(!) copies of
* DOOM's A_KeenDie() with only very minor changes.
*
* \todo Replace this lot with XG (maybe need to add a new flag for
* targeting "mobjs like me").
*/
/**
* kaiser - Used for special stuff. works only per monster!!!
*/
void C_DECL A_RectSpecial(mobj_t* actor)
{
countmobjoftypeparams_t params;
coord_t pos[3];
mobj_t* mo;
int sound;
switch(actor->info->deathSound)
{
case 0: return;
case SFX_PODTH1:
case SFX_PODTH2:
case SFX_PODTH3:
sound = SFX_PODTH1 + P_Random() % 3;
break;
case SFX_BGDTH1:
case SFX_BGDTH2:
sound = SFX_BGDTH1 + P_Random() % 2;
break;
default:
sound = actor->info->deathSound;
break;
}
// Check for bosses.
if(actor->type == MT_CYBORG || actor->type == MT_BITCH)
{
// Full volume.
S_StartSound(sound | DDSF_NO_ATTENUATION, NULL);
actor->reactionTime += 30; // jd64
}
else
{
S_StartSound(sound, actor);
}
memcpy(pos, actor->origin, sizeof(pos));
pos[VX] += FIX2FLT((P_Random() - 128) << 11);
pos[VY] += FIX2FLT((P_Random() - 128) << 11);
pos[VZ] += actor->height / 2;
if((mo = P_SpawnMobj(MT_KABOOM, pos, P_Random() << 24, 0)))
{
S_StartSound(SFX_BAREXP, mo);
mo->mom[MX] = FIX2FLT((P_Random() - 128) << 11);
mo->mom[MY] = FIX2FLT((P_Random() - 128) << 11);
mo->target = actor;
}
actor->reactionTime--;
if(actor->reactionTime <= 0)
{
P_MobjChangeState(actor, P_GetState(actor->type, SN_DEATH) + 2);
}
// Check if there are no more Bitches left in the map.
params.type = actor->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{ // No Bitches left alive.
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4459; // jd64 was 666.
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST); // jd64 was open.
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - Used for special stuff. works only per monster!!!
*/
void C_DECL A_PossSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4444;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_SposSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4445;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_TrooSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = (mo->type == MT_TROOP? 4446 : 4447);
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_SargSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4448;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_HeadSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4450;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_SkulSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4452;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_Bos2Special(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4453;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_BossSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4454;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_PainSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4455;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_FattSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4456;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_BabySpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4457;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* kaiser - used for special stuff. works only per monster!!!
*/
void C_DECL A_CybrSpecial(mobj_t* mo)
{
countmobjoftypeparams_t params;
A_Fall(mo);
params.type = mo->type;
params.count = 0;
Thinker_Iterate(P_MobjThinker, countMobjOfType, ¶ms);
if(!params.count)
{
Line* dummyLine = P_AllocDummyLine();
P_ToXLine(dummyLine)->tag = 4458;
EV_DoFloor(dummyLine, FT_LOWERTOLOWEST);
P_FreeDummyLine(dummyLine);
}
}
/**
* Stay in state until a player is sighted.
*/
void C_DECL A_Look(mobj_t *actor)
{
Sector *sec = Mobj_Sector(actor);
mobj_t *targ;
if(!sec) return;
actor->threshold = 0; // Any shot will wake us up.
targ = P_ToXSector(sec)->soundTarget;
if(targ && (targ->flags & MF_SHOOTABLE))
{
actor->target = targ;
if(actor->flags & MF_AMBUSH)
{
if(P_CheckSight(actor, actor->target))
goto seeyou;
}
else
goto seeyou;
}
if(!Mobj_LookForPlayers(actor, false)) return;
// Go into chase state.
seeyou:
if(actor->info->seeSound)
{
int sound;
switch(actor->info->seeSound)
{
case SFX_POSIT1:
case SFX_POSIT2:
case SFX_POSIT3:
sound = SFX_POSIT1 + P_Random() % 3;
break;
case SFX_BGSIT1:
case SFX_BGSIT2:
sound = SFX_BGSIT1 + P_Random() % 2;
break;
default:
sound = actor->info->seeSound;
break;
}
if(actor->flags2 & MF2_BOSS)
{ // Full volume.
S_StartSound(sound | DDSF_NO_ATTENUATION, actor);
}
else
{
S_StartSound(sound, actor);
}
}
P_MobjChangeState(actor, P_GetState(actor->type, SN_SEE));
}
/**
* Used by the demo cyborg to select the camera as a target on spawn.
*/
void C_DECL A_TargetCamera(mobj_t* actor)
{
int i;
player_t* player;
for(i = 0; i < MAXPLAYERS; ++i)
{
player = &players[i];
if(!player->plr->inGame || !player->plr->mo)
continue;
actor->target = player->plr->mo;
return;
}
// Should never get here.
Con_Error("A_TargetCamera: Could not find suitable target!");
}
/**
* Actor has a melee attack, so it tries to close as fast as possible.
*/
void C_DECL A_Chase(mobj_t *actor)
{
int delta;
statenum_t state;
// jd64 >
if(actor->flags & MF_FLOAT)
{
int r = P_Random();
if(r < 64)
actor->mom[MZ] += 1;
else if(r < 128)
actor->mom[MZ] -= 1;
}
// < d64tc
if(actor->reactionTime)
{
actor->reactionTime--;
}
// Modify target threshold.
if(actor->threshold)
{
if(!actor->target || actor->target->health <= 0)
{
actor->threshold = 0;
}
else
{
actor->threshold--;
}
}
// Turn towards movement direction if not there yet.
if(actor->moveDir < DI_NODIR)
{
actor->angle &= (7 << 29);
delta = actor->angle - (actor->moveDir << 29);
if(delta > 0)
{
actor->angle -= ANG90 / 2;
}
else if(delta < 0)
{
actor->angle += ANG90 / 2;
}
}
if(!actor->target || !(actor->target->flags & MF_SHOOTABLE) ||
P_MobjIsCamera(actor->target))
{
// Look for a new target.
if(!Mobj_LookForPlayers(actor, true))
{