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gzdoom/src/p_map.cpp
Christoph Oelckers b8312a9bd8 - Gave Strife's PhosphorousFire the MF2_NODMGTHRUST flag so that its 
damage is truly thrustless. The 'thrustless' parameter disabled all
  thrust done by PIT_RadiusDamage but not the one done by P_DamageMobj.
  Also gave Hexen's poison cloud the MF3_BLOODLESSIMPACT flag and made
  spawning of blood decals in PIT_RadiusAttack depend on that. Since with
  these changes the 'bombthrustless' argument to P_RadiusAttack is no 
  longer useful I removed it.


SVN r285 (trunk)
2006-08-10 21:03:17 +00:00

4614 lines
124 KiB
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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
// Movement, collision handling.
// Shooting and aiming.
//
//-----------------------------------------------------------------------------
#include <stdlib.h>
#include <math.h>
#include "templates.h"
#include "vectors.h"
#include "m_alloc.h"
#include "m_bbox.h"
#include "m_random.h"
#include "i_system.h"
#include "doomdef.h"
#include "p_local.h"
#include "p_lnspec.h"
#include "p_effect.h"
#include "p_terrain.h"
#include "p_trace.h"
#include "s_sound.h"
#include "decallib.h"
// State.
#include "doomstat.h"
#include "r_state.h"
#include "gi.h"
#include "a_sharedglobal.h"
#include "a_doomglobal.h"
#include "p_conversation.h"
#define WATER_SINK_FACTOR 3
#define WATER_SINK_SMALL_FACTOR 4
#define WATER_SINK_SPEED (FRACUNIT/2)
#define WATER_JUMP_SPEED (FRACUNIT*7/2)
#define USE_PUZZLE_ITEM_SPECIAL 129
CVAR (Bool, cl_bloodsplats, true, CVAR_ARCHIVE)
static void CheckForPushSpecial (line_t *line, int side, AActor *mobj);
static void SpawnShootDecal (AActor *t1, const FTraceResults &trace);
static void SpawnDeepSplash (AActor *t1, const FTraceResults &trace, AActor *puff,
fixed_t vx, fixed_t vy, fixed_t vz);
fixed_t tmbbox[4];
AActor *tmthing;
static int tmflags;
static fixed_t tmx;
static fixed_t tmy;
static fixed_t tmz; // [RH] Needed for third dimension of teleporters
static fixed_t pe_x; // Pain Elemental position for Lost Soul checks // phares
static fixed_t pe_y; // Pain Elemental position for Lost Soul checks // phares
static fixed_t ls_x; // Lost Soul position for Lost Soul checks // phares
static fixed_t ls_y; // Lost Soul position for Lost Soul checks // phares
static FRandom pr_tracebleed ("TraceBleed");
static FRandom pr_checkthing ("CheckThing");
static FRandom pr_lineattack ("LineAttack");
static FRandom pr_crunch ("DoCrunch");
// If "floatok" true, move would be ok
// if within "tmfloorz - tmceilingz".
BOOL floatok;
fixed_t tmfloorz;
fixed_t tmceilingz;
fixed_t tmdropoffz;
int tmfloorpic;
sector_t *tmfloorsector;
int tmceilingpic;
sector_t *tmceilingsector;
static fixed_t tmfbbox[4];
static AActor *tmfthing;
fixed_t tmffloorz;
fixed_t tmfceilingz;
fixed_t tmfdropoffz;
fixed_t tmffloorpic;
sector_t *tmffloorsector;
fixed_t tmfceilingpic;
sector_t *tmfceilingsector;
//Added by MC: So bot will know what kind of sector it's entering.
sector_t* tmsector;
// keep track of the line that lowers the ceiling,
// so missiles don't explode against sky hack walls
line_t* ceilingline;
line_t *BlockingLine;
// keep track of special lines as they are hit,
// but don't process them until the move is proven valid
TArray<line_t *> spechit;
AActor *onmobj; // generic global onmobj...used for landing on pods/players
AActor *BlockingMobj;
// Temporary holder for thing_sectorlist threads
msecnode_t* sector_list = NULL; // phares 3/16/98
extern sector_t *openbottomsec;
extern sector_t *opentopsec;
bool DoRipping;
AActor *LastRipped;
//==========================================================================
//
// PIT_FindFloorCeiling
//
//==========================================================================
static BOOL PIT_FindFloorCeiling (line_t *ld)
{
if (tmfbbox[BOXRIGHT] <= ld->bbox[BOXLEFT]
|| tmfbbox[BOXLEFT] >= ld->bbox[BOXRIGHT]
|| tmfbbox[BOXTOP] <= ld->bbox[BOXBOTTOM]
|| tmfbbox[BOXBOTTOM] >= ld->bbox[BOXTOP] )
return true;
if (P_BoxOnLineSide (tmfbbox, ld) != -1)
return true;
// A line has been hit
if (!ld->backsector)
{ // One sided line
return true;
}
fixed_t sx, sy;
// set openrange, opentop, openbottom
if (((ld->frontsector->floorplane.a | ld->frontsector->floorplane.b) |
(ld->backsector->floorplane.a | ld->backsector->floorplane.b) |
(ld->frontsector->ceilingplane.a | ld->frontsector->ceilingplane.b) |
(ld->backsector->ceilingplane.a | ld->backsector->ceilingplane.b)) == 0)
{
P_LineOpening (ld, sx=tmx, sy=tmy, tmx, tmy);
}
else
{ // Find the point on the line closest to the actor's center, and use
// that to calculate openings
float dx = (float)ld->dx;
float dy = (float)ld->dy;
fixed_t r = (fixed_t)(((float)(tmx - ld->v1->x) * dx +
(float)(tmy - ld->v1->y) * dy) /
(dx*dx + dy*dy) * 16777216.f);
if (r <= 0)
{
P_LineOpening (ld, sx=ld->v1->x, sy=ld->v1->y, tmx, tmy);
}
else if (r >= (1<<24))
{
P_LineOpening (ld, sx=ld->v2->x, sy=ld->v2->y, tmfthing->x, tmfthing->y);
}
else
{
P_LineOpening (ld, sx=ld->v1->x + MulScale24 (r, ld->dx),
sy=ld->v1->y + MulScale24 (r, ld->dy), tmx, tmy);
}
}
// adjust floor / ceiling heights
if (opentop < tmfceilingz)
{
tmfceilingz = opentop;
BlockingLine = ld;
}
if (openbottom > tmffloorz)
{
tmffloorz = openbottom;
tmffloorsector = openbottomsec;
BlockingLine = ld;
}
if (lowfloor < tmfdropoffz)
tmfdropoffz = lowfloor;
return true;
}
//==========================================================================
//
// P_FindFloorCeiling
//
//==========================================================================
void P_FindFloorCeiling (AActor *actor)
{
int xl,xh,yl,yh,bx,by;
fixed_t x, y;
sector_t *sec;
x = actor->x;
y = actor->y;
tmfbbox[BOXTOP] = y + actor->radius;
tmfbbox[BOXBOTTOM] = y - actor->radius;
tmfbbox[BOXRIGHT] = x + actor->radius;
tmfbbox[BOXLEFT] = x - actor->radius;
sec = R_PointInSubsector (x, y)->sector;
tmffloorz = tmfdropoffz = sec->floorplane.ZatPoint (x, y);
tmfceilingz = sec->ceilingplane.ZatPoint (x, y);
tmffloorpic = sec->floorpic;
tmffloorsector = sec;
tmfceilingpic = sec->ceilingpic;
tmfceilingsector = sec;
tmfthing = actor;
validcount++;
xl = (tmfbbox[BOXLEFT] - bmaporgx) >> MAPBLOCKSHIFT;
xh = (tmfbbox[BOXRIGHT] - bmaporgx) >> MAPBLOCKSHIFT;
yl = (tmfbbox[BOXBOTTOM] - bmaporgy) >> MAPBLOCKSHIFT;
yh = (tmfbbox[BOXTOP] - bmaporgy) >> MAPBLOCKSHIFT;
for (bx = xl; bx <= xh; bx++)
for (by = yl; by <= yh; by++)
if (!P_BlockLinesIterator (bx, by, PIT_FindFloorCeiling))
return;
}
//
// TELEPORT MOVE
//
//
// PIT_StompThing
//
static BOOL StompAlwaysFrags;
BOOL PIT_StompThing (AActor *thing)
{
fixed_t blockdist;
if (!(thing->flags & MF_SHOOTABLE))
return true;
// don't clip against self
if (thing == tmthing)
return true;
blockdist = thing->radius + tmthing->radius;
if (abs(thing->x - tmx) >= blockdist || abs(thing->y - tmy) >= blockdist)
{
// didn't hit it
return true;
}
// [RH] Z-Check
// But not if not MF2_PASSMOBJ or MF3_DONTOVERLAP are set!
// Otherwise those things would get stuck inside each other.
if ((tmthing->flags2 & MF2_PASSMOBJ || thing->flags4 & MF4_ACTLIKEBRIDGE) && !(i_compatflags & COMPATF_NO_PASSMOBJ))
{
if (!(thing->flags3 & tmthing->flags3 & MF3_DONTOVERLAP))
{
if (tmz > thing->z + thing->height)
return true; // overhead
if (tmz+tmthing->height < thing->z)
return true; // underneath
}
}
// monsters don't stomp things except on boss level
// [RH] Some Heretic/Hexen monsters can telestomp
if (StompAlwaysFrags || (tmthing->flags2 & MF2_TELESTOMP))
{
P_DamageMobj (thing, tmthing, tmthing, 1000000, MOD_TELEFRAG);
return true;
}
return false;
}
//
// P_TeleportMove
//
// [RH] Added telefrag parameter: When true, anything in the spawn spot
// will always be telefragged, and the move will be successful.
// Added z parameter. Originally, the thing's z was set *after* the
// move was made, so the height checking I added for 1.13 could
// potentially erroneously indicate the move was okay if the thing
// was being teleported between two non-overlapping height ranges.
BOOL P_TeleportMove (AActor *thing, fixed_t x, fixed_t y, fixed_t z, BOOL telefrag)
{
static TArray<AActor *> telebt;
int xl;
int xh;
int yl;
int yh;
int bx;
int by;
subsector_t* newsubsec;
// kill anything occupying the position
tmthing = thing;
tmflags = thing->flags;
tmx = x;
tmy = y;
tmz = z;
tmfbbox[BOXTOP] = tmbbox[BOXTOP] = y + tmthing->radius;
tmfbbox[BOXBOTTOM] = tmbbox[BOXBOTTOM] = y - tmthing->radius;
tmfbbox[BOXRIGHT] = tmbbox[BOXRIGHT] = x + tmthing->radius;
tmfbbox[BOXLEFT] = tmbbox[BOXLEFT] = x - tmthing->radius;
newsubsec = R_PointInSubsector (x,y);
ceilingline = NULL;
// The base floor/ceiling is from the subsector that contains the point.
// Any contacted lines the step closer together will adjust them.
tmffloorz = tmfdropoffz = newsubsec->sector->floorplane.ZatPoint (x, y);
tmfceilingz = newsubsec->sector->ceilingplane.ZatPoint (x, y);
tmffloorpic = newsubsec->sector->floorpic;
tmffloorsector = newsubsec->sector;
tmfceilingpic = newsubsec->sector->ceilingpic;
tmfceilingsector = newsubsec->sector;
tmfthing = tmthing;
validcount++;
spechit.Clear ();
telebt.Clear();
StompAlwaysFrags = tmthing->player || (level.flags & LEVEL_MONSTERSTELEFRAG) || telefrag;
// stomp on any things contacted
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
for (bx=xl ; bx<=xh ; bx++)
{
for (by=yl ; by<=yh ; by++)
{
if (!P_BlockLinesIterator(bx,by,PIT_FindFloorCeiling))
{
return false;
}
}
}
fixed_t savefloorz = tmffloorz;
fixed_t saveceilingz = tmfceilingz;
sector_t *savesector = tmffloorsector;
int savepic = tmffloorpic;
sector_t *savecsector = tmffloorsector;
int savecpic = tmffloorpic;
fixed_t savedropoff = tmfdropoffz;
for (bx=xl ; bx<=xh ; bx++)
{
for (by=yl ; by<=yh ; by++)
{
if (!P_BlockThingsIterator(bx,by,PIT_StompThing,telebt))
{
return false;
}
}
}
// the move is ok, so link the thing into its new position
thing->SetOrigin (x, y, z);
thing->floorz = savefloorz;
thing->ceilingz = saveceilingz;
thing->floorsector = savesector;
thing->floorpic = savepic;
thing->ceilingsector = savecsector;
thing->ceilingpic = savecpic;
thing->dropoffz = savedropoff; // killough 11/98
if (thing->flags2 & MF2_FLOORCLIP)
{
thing->AdjustFloorClip ();
}
if (thing == players[consoleplayer].camera)
{
R_ResetViewInterpolation ();
}
thing->PrevX = x;
thing->PrevY = y;
thing->PrevZ = z;
return true;
}
//
// [RH] P_PlayerStartStomp
//
// Like P_TeleportMove, but it doesn't move anything, and only monsters and other
// players get telefragged.
//
BOOL PIT_StompThing2 (AActor *thing)
{
fixed_t blockdist;
if (!(thing->flags & MF_SHOOTABLE))
return true;
// don't clip against self, and don't kill your own voodoo dolls
if (thing == tmthing ||
(thing->player == tmthing->player && thing->player != NULL))
return true;
// only kill monsters and other players
if (thing->player == NULL && !(thing->flags3 & MF3_ISMONSTER))
return true;
blockdist = thing->radius + tmthing->radius;
if (abs(thing->x - tmthing->x) >= blockdist || abs(thing->y - tmthing->y) >= blockdist)
{
// didn't hit it
return true;
}
if (tmthing->z > thing->z + thing->height)
return true; // overhead
if (tmthing->z + tmthing->height < thing->z)
return true; // underneath
P_DamageMobj (thing, tmthing, tmthing, 1000000, MOD_TELEFRAG);
return true;
}
void P_PlayerStartStomp (AActor *actor)
{
static TArray<AActor *> telebt;
int xl;
int xh;
int yl;
int yh;
int bx;
int by;
tmthing = actor;
tmflags = actor->flags;
tmbbox[BOXTOP] = actor->y + actor->radius;
tmbbox[BOXBOTTOM] = actor->y - actor->radius;
tmbbox[BOXRIGHT] = actor->x + actor->radius;
tmbbox[BOXLEFT] = actor->x - actor->radius;
telebt.Clear();
// stomp on any things contacted
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
for (bx = xl; bx <= xh; bx++)
{
for (by = yl; by <= yh; by++)
{
P_BlockThingsIterator (bx, by, PIT_StompThing2, telebt);
}
}
}
inline fixed_t secfriction (const sector_t *sec)
{
fixed_t friction = Terrains[TerrainTypes[sec->floorpic]].Friction;
return friction != 0 ? friction : sec->friction;
}
inline fixed_t secmovefac (const sector_t *sec)
{
fixed_t movefactor = Terrains[TerrainTypes[sec->floorpic]].MoveFactor;
return movefactor != 0 ? movefactor : sec->movefactor;
}
//
// killough 8/28/98:
//
// P_GetFriction()
//
// Returns the friction associated with a particular mobj.
int P_GetFriction (const AActor *mo, int *frictionfactor)
{
int friction = ORIG_FRICTION;
int movefactor = ORIG_FRICTION_FACTOR;
const msecnode_t *m;
const sector_t *sec;
if (mo->flags2 & MF2_FLY && mo->flags & MF_NOGRAVITY)
{
friction = FRICTION_FLY;
}
else if (!(mo->flags & MF_NOGRAVITY) && mo->waterlevel > 1 ||
(mo->waterlevel == 1 && mo->z > mo->floorz + 6*FRACUNIT))
{
friction = secfriction (mo->Sector);
movefactor = secmovefac (mo->Sector) >> 1;
}
else if (var_friction && !(mo->flags & (MF_NOCLIP|MF_NOGRAVITY)))
{ // When the object is straddling sectors with the same
// floor height that have different frictions, use the lowest
// friction value (muddy has precedence over icy).
for (m = mo->touching_sectorlist; m; m = m->m_tnext)
{
sec = m->m_sector;
if (!(sec->special & FRICTION_MASK) &&
Terrains[TerrainTypes[sec->floorpic]].Friction == 0)
{
continue;
}
if ((secfriction(sec) < friction || friction == ORIG_FRICTION) &&
(mo->z <= sec->floorplane.ZatPoint (mo->x, mo->y) ||
(sec->heightsec && !(sec->heightsec->MoreFlags & SECF_IGNOREHEIGHTSEC) &&
mo->z <= sec->heightsec->floorplane.ZatPoint (mo->x, mo->y))))
{
friction = secfriction (sec);
movefactor = secmovefac (sec);
}
}
}
if (frictionfactor)
*frictionfactor = movefactor;
return friction;
}
// phares 3/19/98
// P_GetMoveFactor() returns the value by which the x,y
// movements are multiplied to add to player movement.
//
// killough 8/28/98: rewritten
int P_GetMoveFactor (const AActor *mo, int *frictionp)
{
int movefactor, friction;
// If the floor is icy or muddy, it's harder to get moving. This is where
// the different friction factors are applied to 'trying to move'. In
// p_mobj.c, the friction factors are applied as you coast and slow down.
if ((friction = P_GetFriction(mo, &movefactor)) < ORIG_FRICTION)
{
// phares 3/11/98: you start off slowly, then increase as
// you get better footing
int momentum = P_AproxDistance(mo->momx,mo->momy);
if (momentum > MORE_FRICTION_MOMENTUM<<2)
movefactor <<= 3;
else if (momentum > MORE_FRICTION_MOMENTUM<<1)
movefactor <<= 2;
else if (momentum > MORE_FRICTION_MOMENTUM)
movefactor <<= 1;
}
if (frictionp)
*frictionp = friction;
return movefactor;
}
//
// MOVEMENT ITERATOR FUNCTIONS
//
// // phares
// PIT_CrossLine // |
// Checks to see if a PE->LS trajectory line crosses a blocking // V
// line. Returns false if it does.
//
// tmbbox holds the bounding box of the trajectory. If that box
// does not touch the bounding box of the line in question,
// then the trajectory is not blocked. If the PE is on one side
// of the line and the LS is on the other side, then the
// trajectory is blocked.
//
// Currently this assumes an infinite line, which is not quite
// correct. A more correct solution would be to check for an
// intersection of the trajectory and the line, but that takes
// longer and probably really isn't worth the effort.
//
static // killough 3/26/98: make static
BOOL PIT_CrossLine (line_t* ld)
{
if (!(ld->flags & ML_TWOSIDED) ||
(ld->flags & (ML_BLOCKING|ML_BLOCKMONSTERS|ML_BLOCKEVERYTHING)))
if (!(tmbbox[BOXLEFT] > ld->bbox[BOXRIGHT] ||
tmbbox[BOXRIGHT] < ld->bbox[BOXLEFT] ||
tmbbox[BOXTOP] < ld->bbox[BOXBOTTOM] ||
tmbbox[BOXBOTTOM] > ld->bbox[BOXTOP]))
if (P_PointOnLineSide(pe_x,pe_y,ld) != P_PointOnLineSide(ls_x,ls_y,ld))
return(false); // line blocks trajectory // ^
return(true); // line doesn't block trajectory // |
} // phares
//
// PIT_CheckLine
// Adjusts tmfloorz and tmceilingz as lines are contacted
//
static // killough 3/26/98: make static
BOOL PIT_CheckLine (line_t *ld)
{
bool rail = false;
if (tmbbox[BOXRIGHT] <= ld->bbox[BOXLEFT]
|| tmbbox[BOXLEFT] >= ld->bbox[BOXRIGHT]
|| tmbbox[BOXTOP] <= ld->bbox[BOXBOTTOM]
|| tmbbox[BOXBOTTOM] >= ld->bbox[BOXTOP] )
return true;
if (P_BoxOnLineSide (tmbbox, ld) != -1)
return true;
// A line has been hit
/*
=
= The moving thing's destination position will cross the given line.
= If this should not be allowed, return false.
= If the line is special, keep track of it to process later if the move
= is proven ok. NOTE: specials are NOT sorted by order, so two special lines
= that are only 8 pixels apart could be crossed in either order.
*/
if (!ld->backsector)
{ // One sided line
if (tmthing->flags2 & MF2_BLASTED)
{
P_DamageMobj (tmthing, NULL, NULL, tmthing->Mass >> 5, MOD_HIT);
}
BlockingLine = ld;
CheckForPushSpecial (ld, 0, tmthing);
return false;
}
if (!(tmthing->flags & MF_MISSILE) || (ld->flags & ML_BLOCKEVERYTHING))
{
if (ld->flags & ML_RAILING)
{
rail = true;
}
else if ((ld->flags & (ML_BLOCKING|ML_BLOCKEVERYTHING)) || // explicitly blocking everything
(!(tmthing->flags3 & MF3_NOBLOCKMONST) && (ld->flags & ML_BLOCKMONSTERS)) || // block monsters only
((ld->flags & ML_BLOCK_FLOATERS) && (tmthing->flags & MF_FLOAT))) // block floaters
{
if (tmthing->flags2 & MF2_BLASTED)
{
P_DamageMobj (tmthing, NULL, NULL, tmthing->Mass >> 5, MOD_HIT);
}
BlockingLine = ld;
CheckForPushSpecial (ld, 0, tmthing);
return false;
}
}
// [RH] Steep sectors count as dropoffs (unless already in one)
if (!(tmthing->flags & MF_DROPOFF) &&
!(tmthing->flags & (MF_NOGRAVITY|MF_NOCLIP)))
{
if (ld->frontsector->floorplane.c < STEEPSLOPE ||
ld->backsector->floorplane.c < STEEPSLOPE)
{
const msecnode_t *node = tmthing->touching_sectorlist;
bool allow = false;
int count = 0;
while (node != NULL)
{
count++;
if (node->m_sector->floorplane.c < STEEPSLOPE)
{
allow = true;
break;
}
node = node->m_tnext;
}
if (!allow)
{
return false;
}
}
}
fixed_t sx, sy;
// set openrange, opentop, openbottom
if (((ld->frontsector->floorplane.a | ld->frontsector->floorplane.b) |
(ld->backsector->floorplane.a | ld->backsector->floorplane.b) |
(ld->frontsector->ceilingplane.a | ld->frontsector->ceilingplane.b) |
(ld->backsector->ceilingplane.a | ld->backsector->ceilingplane.b)) == 0)
{
P_LineOpening (ld, sx=tmx, sy=tmy, tmx, tmy);
}
else
{ // Find the point on the line closest to the actor's center, and use
// that to calculate openings
float dx = (float)ld->dx;
float dy = (float)ld->dy;
fixed_t r = (fixed_t)(((float)(tmx - ld->v1->x) * dx +
(float)(tmy - ld->v1->y) * dy) /
(dx*dx + dy*dy) * 16777216.f);
/* Printf ("%d:%d: %d (%d %d %d %d) (%d %d %d %d)\n", level.time, ld-lines, r,
ld->frontsector->floorplane.a,
ld->frontsector->floorplane.b,
ld->frontsector->floorplane.c,
ld->frontsector->floorplane.ic,
ld->backsector->floorplane.a,
ld->backsector->floorplane.b,
ld->backsector->floorplane.c,
ld->backsector->floorplane.ic);*/
if (r <= 0)
{
P_LineOpening (ld, sx=ld->v1->x, sy=ld->v1->y, tmx, tmy);
}
else if (r >= (1<<24))
{
P_LineOpening (ld, sx=ld->v2->x, sy=ld->v2->y, tmthing->x, tmthing->y);
}
else
{
P_LineOpening (ld, sx=ld->v1->x + MulScale24 (r, ld->dx),
sy=ld->v1->y + MulScale24 (r, ld->dy), tmx, tmy);
}
/* Printf (" %d %d %d\n", sx, sy, openbottom);*/
}
if (rail &&
// Eww! Gross! This check means the rail only exists if you stand on the
// high side of the rail. So if you're walking on the low side of the rail,
// it's possible to get stuck in the rail until you jump out. Unfortunately,
// there is an area on Strife MAP04 that requires this behavior. Still, it's
// better than Strife's handling of rails, which lets you jump into rails
// from either side. How long until somebody reports this as a bug and I'm
// forced to say, "It's not a bug. It's a feature?" Ugh.
(gameinfo.gametype != GAME_Strife ||
level.flags & LEVEL_HEXENFORMAT ||
openbottom == tmthing->Sector->floorplane.ZatPoint (sx, sy)))
{
openbottom += 32*FRACUNIT;
}
// adjust floor / ceiling heights
if (opentop < tmceilingz)
{
tmceilingz = opentop;
tmceilingsector = opentopsec;
tmceilingpic = opentopsec->ceilingpic;
ceilingline = ld;
BlockingLine = ld;
}
if (openbottom > tmfloorz)
{
tmfloorz = openbottom;
tmfloorsector = openbottomsec;
tmfloorpic = openbottomsec->floorpic;
BlockingLine = ld;
}
if (lowfloor < tmdropoffz)
tmdropoffz = lowfloor;
// if contacted a special line, add it to the list
if (ld->special)
{
spechit.Push (ld);
}
return true;
}
//==========================================================================
//
// PIT_CheckThing
//
//==========================================================================
static AActor *stepthing;
BOOL PIT_CheckThing (AActor *thing)
{
fixed_t topz;
fixed_t blockdist;
BOOL solid;
int damage;
// don't clip against self
if (thing == tmthing)
return true;
if (!(thing->flags & (MF_SOLID|MF_SPECIAL|MF_SHOOTABLE)) )
return true; // can't hit thing
blockdist = thing->radius + tmthing->radius;
if (abs(thing->x - tmx) >= blockdist || abs(thing->y - tmy) >= blockdist)
{
// didn't hit thing
return true;
}
BlockingMobj = thing;
topz = thing->z + thing->height;
if (!(i_compatflags & COMPATF_NO_PASSMOBJ) && !(tmthing->flags & (MF_FLOAT|MF_MISSILE|MF_SKULLFLY|MF_NOGRAVITY)) &&
(thing->flags & MF_SOLID) && (thing->flags4 & MF4_ACTLIKEBRIDGE))
{
// [RH] Let monsters walk on actors as well as floors
if ((tmthing->flags3 & MF3_ISMONSTER) &&
topz >= tmfloorz && topz <= tmthing->z + tmthing->MaxStepHeight)
{
// The commented-out if is an attempt to prevent monsters from walking off a
// thing further than they would walk off a ledge. I can't think of an easy
// way to do this, so I restrict them to only walking on bridges instead.
// Uncommenting the if here makes it almost impossible for them to walk on
// anything, bridge or otherwise.
// if (abs(thing->x - tmx) <= thing->radius &&
// abs(thing->y - tmy) <= thing->radius)
{
stepthing = thing;
tmfloorz = topz;
}
}
}
// [RH] If the other thing is a bridge, then treat the moving thing as if it had MF2_PASSMOBJ, so
// you can use a scrolling floor to move scenery items underneath a bridge.
if ((tmthing->flags2 & MF2_PASSMOBJ || thing->flags4 & MF4_ACTLIKEBRIDGE) && !(i_compatflags & COMPATF_NO_PASSMOBJ))
{ // check if a mobj passed over/under another object
if (tmthing->flags3 & thing->flags3 & MF3_DONTOVERLAP)
{ // Some things prefer not to overlap each other, if possible
return false;
}
if ((tmthing->z >= topz) || (tmthing->z + tmthing->height <= thing->z))
{
return true;
}
}
// Check for skulls slamming into things
if (tmthing->flags & MF_SKULLFLY)
{
bool res = tmthing->Slam (BlockingMobj);
BlockingMobj = NULL;
return res;
}
// Check for blasted thing running into another
if ((tmthing->flags2 & MF2_BLASTED) && (thing->flags & MF_SHOOTABLE))
{
if (!(thing->flags2 & MF2_BOSS) && (thing->flags3 & MF3_ISMONSTER))
{
thing->momx += tmthing->momx;
thing->momy += tmthing->momy;
if ((thing->momx + thing->momy) > 3*FRACUNIT)
{
damage = (tmthing->Mass / 100) + 1;
P_DamageMobj (thing, tmthing, tmthing, damage, tmthing->DamageType);
P_TraceBleed (damage, thing, tmthing);
damage = (thing->Mass / 100) + 1;
P_DamageMobj (tmthing, thing, thing, damage >> 2, tmthing->DamageType);
P_TraceBleed (damage, tmthing, thing);
}
return false;
}
}
// Check for missile
if (tmthing->flags & MF_MISSILE)
{
// Check for a non-shootable mobj
if (thing->flags2 & MF2_NONSHOOTABLE)
{
return true;
}
// Check for passing through a ghost
if ((thing->flags3 & MF3_GHOST) && (tmthing->flags2 & MF2_THRUGHOST))
{
return true;
}
// Check if it went over / under
if (tmthing->z > thing->z + thing->height)
{ // Over thing
return true;
}
if (tmthing->z+tmthing->height < thing->z)
{ // Under thing
return true;
}
if (tmthing->flags2 & MF2_BOUNCE2)
{
if (tmthing->damage == 0)
{
return (tmthing->target == thing || !(thing->flags & MF_SOLID));
}
}
switch (tmthing->SpecialMissileHit (thing))
{
case 0: return false;
case 1: return true;
default: break;
}
// [RH] Extend DeHacked infighting to allow for monsters
// to never fight each other
// [Graf Zahl] Why do I have the feeling that this didn't really work anymore now
// that ZDoom supports friendly monsters?
if (tmthing->target != NULL)
{
if (thing == tmthing->target)
{ // Don't missile self
return true;
}
// players are never subject to infighting settings and are always allowed
// to harm / be harmed by anything.
if (!thing->player && !tmthing->target->player)
{
if (infighting < 0)
{
// -1: Monsters cannot hurt each other, but make exceptions for
// friendliness and hate status.
if (tmthing->target->flags & MF_SHOOTABLE)
{
if (!(thing->flags3 & MF3_ISMONSTER))
{
return false; // Question: Should monsters be allowed to shoot barrels in this mode?
// The old code does not.
}
// Monsters that are clearly hostile can always hurt each other
if (!thing->IsHostile (tmthing->target))
{
// The same if the shooter hates the target
if (thing->tid == 0 || tmthing->target->TIDtoHate != thing->tid)
{
return false;
}
}
}
}
else if (infighting == 0)
{
// 0: Monsters cannot hurt same species except
// cases where they are clearly supposed to do that
if (thing->IsFriend (tmthing->target))
{
// Friends never harm each other
return false;
}
if (thing->TIDtoHate != 0 && thing->TIDtoHate == tmthing->target->TIDtoHate)
{
// [RH] Don't hurt monsters that hate the same thing as you do
return false;
}
if (thing->GetSpecies() == tmthing->target->GetSpecies())
{
// Don't hurt same species or any relative -
// but only if the target isn't one's hostile.
if (!thing->IsHostile (tmthing->target))
{
// Allow hurting monsters the shooter hates.
if (thing->tid == 0 || tmthing->target->TIDtoHate != thing->tid)
{
return false;
}
}
}
}
// else if (infighting==1) any shot hurts anything - no further tests
}
}
if (!(thing->flags & MF_SHOOTABLE))
{ // Didn't do any damage
return !(thing->flags & MF_SOLID);
}
if ((thing->flags4 & MF4_SPECTRAL) && !(tmthing->flags4 & MF4_SPECTRAL))
{
return true;
}
if (DoRipping)
{
if (LastRipped != thing)
{
LastRipped = thing;
if (!(thing->flags & MF_NOBLOOD) &&
!(thing->flags2 & MF2_REFLECTIVE) &&
!(tmthing->flags3 & MF3_BLOODLESSIMPACT) &&
!(thing->flags2 & (MF2_INVULNERABLE|MF2_DORMANT)))
{ // Ok to spawn blood
P_RipperBlood (tmthing, thing);
}
S_Sound (tmthing, CHAN_BODY, "misc/ripslop", 1, ATTN_IDLE);
damage = ((pr_checkthing()&3)+2)*tmthing->damage;
P_DamageMobj (thing, tmthing, tmthing->target, damage, tmthing->DamageType);
if (!(tmthing->flags3 & MF3_BLOODLESSIMPACT))
{
P_TraceBleed (damage, thing, tmthing);
}
if (thing->flags2 & MF2_PUSHABLE
&& !(tmthing->flags2 & MF2_CANNOTPUSH))
{ // Push thing
thing->momx += tmthing->momx>>2;
thing->momy += tmthing->momy>>2;
}
}
spechit.Clear ();
return true;
}
// Do damage
damage = pr_checkthing();
if (tmthing->flags4 & MF4_STRIFEDAMAGE)
{
damage &= 3;
}
else
{
damage &= 7;
}
damage = (damage + 1) * tmthing->damage;
if (damage > 0)
{
P_DamageMobj (thing, tmthing, tmthing->target, damage, tmthing->DamageType);
if ((tmthing->flags5 & MF5_BLOODSPLATTER) &&
!(thing->flags & MF_NOBLOOD) &&
!(thing->flags2 & MF2_REFLECTIVE) &&
!(thing->flags2 & (MF2_INVULNERABLE|MF2_DORMANT)) &&
!(tmthing->flags3 & MF3_BLOODLESSIMPACT) &&
(pr_checkthing() < 192))
{
P_BloodSplatter (tmthing->x, tmthing->y, tmthing->z, thing);
}
if (!(tmthing->flags3 & MF3_BLOODLESSIMPACT))
{
P_TraceBleed (damage, thing, tmthing);
}
}
else if (damage < 0)
{
P_GiveBody (thing, -damage);
}
return false; // don't traverse any more
}
if (thing->flags2 & MF2_PUSHABLE && !(tmthing->flags2 & MF2_CANNOTPUSH) &&
(tmthing->player == NULL || !(tmthing->player->cheats & CF_PREDICTING)))
{ // Push thing
thing->momx += tmthing->momx >> 2;
thing->momy += tmthing->momy >> 2;
}
solid = (thing->flags & MF_SOLID) &&
!(thing->flags & MF_NOCLIP) &&
(tmthing->flags & MF_SOLID);
// Check for special pickup
if ((thing->flags & MF_SPECIAL) && (tmflags & MF_PICKUP)
// [RH] The next condition is to compensate for the extra height
// that gets added by P_CheckPosition() so that you cannot pick
// up things that are above your true height.
&& thing->z < tmthing->z + tmthing->height - tmthing->MaxStepHeight)
{ // Can be picked up by tmthing
P_TouchSpecialThing (thing, tmthing); // can remove thing
}
// killough 3/16/98: Allow non-solid moving objects to move through solid
// ones, by allowing the moving thing (tmthing) to move if it's non-solid,
// despite another solid thing being in the way.
// killough 4/11/98: Treat no-clipping things as not blocking
return !solid;
// return !(thing->flags & MF_SOLID); // old code -- killough
}
// This routine checks for Lost Souls trying to be spawned // phares
// across 1-sided lines, impassible lines, or "monsters can't // |
// cross" lines. Draw an imaginary line between the PE // V
// and the new Lost Soul spawn spot. If that line crosses
// a 'blocking' line, then disallow the spawn. Only search
// lines in the blocks of the blockmap where the bounding box
// of the trajectory line resides. Then check bounding box
// of the trajectory vs. the bounding box of each blocking
// line to see if the trajectory and the blocking line cross.
// Then check the PE and LS to see if they're on different
// sides of the blocking line. If so, return true, otherwise
// false.
BOOL Check_Sides(AActor* actor, int x, int y)
{
int bx,by,xl,xh,yl,yh;
pe_x = actor->x;
pe_y = actor->y;
ls_x = x;
ls_y = y;
// Here is the bounding box of the trajectory
tmbbox[BOXLEFT] = pe_x < x ? pe_x : x;
tmbbox[BOXRIGHT] = pe_x > x ? pe_x : x;
tmbbox[BOXTOP] = pe_y > y ? pe_y : y;
tmbbox[BOXBOTTOM] = pe_y < y ? pe_y : y;
// Determine which blocks to look in for blocking lines
xl = (tmbbox[BOXLEFT] - bmaporgx)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy)>>MAPBLOCKSHIFT;
// xl->xh, yl->yh determine the mapblock set to search
validcount++; // prevents checking same line twice
for (bx = xl ; bx <= xh ; bx++)
for (by = yl ; by <= yh ; by++)
if (!P_BlockLinesIterator(bx,by,PIT_CrossLine))
return true; // ^
return(false); // |
} // phares
//---------------------------------------------------------------------------
//
// PIT_CheckOnmobjZ
//
//---------------------------------------------------------------------------
BOOL PIT_CheckOnmobjZ (AActor *thing)
{
if (!(thing->flags & MF_SOLID))
{ // Can't hit thing
return true;
}
if (thing->flags & (MF_SPECIAL|MF_NOCLIP|MF_CORPSE))
{ // [RH] Corpses and specials and noclippers don't block moves
return true;
}
if (!(thing->flags4 & MF4_ACTLIKEBRIDGE) && (tmthing->flags & MF_SPECIAL))
{ // [RH] Only bridges block pickup items
return true;
}
if (thing == tmthing)
{ // Don't clip against self
return true;
}
if (tmthing->z > thing->z+thing->height)
{ // over thing
return true;
}
else if (tmthing->z+tmthing->height <= thing->z)
{ // under thing
return true;
}
fixed_t blockdist = thing->radius+tmthing->radius;
if (abs(thing->x-tmx) >= blockdist || abs(thing->y-tmy) >= blockdist)
{ // Didn't hit thing
return true;
}
onmobj = thing;
return false;
}
/*
===============================================================================
MOVEMENT CLIPPING
===============================================================================
*/
//----------------------------------------------------------------------------
//
// FUNC P_TestMobjLocation
//
// Returns true if the mobj is not blocked by anything at its current
// location, otherwise returns false.
//
//----------------------------------------------------------------------------
BOOL P_TestMobjLocation (AActor *mobj)
{
int flags;
flags = mobj->flags;
mobj->flags &= ~MF_PICKUP;
if (P_CheckPosition(mobj, mobj->x, mobj->y))
{ // XY is ok, now check Z
mobj->flags = flags;
fixed_t z = mobj->z;
if (mobj->flags2 & MF2_FLOATBOB)
{
z -= FloatBobOffsets[(mobj->FloatBobPhase + level.maptime - 1) & 63];
}
if ((z < mobj->floorz) || (z + mobj->height > mobj->ceilingz))
{ // Bad Z
return false;
}
return true;
}
mobj->flags = flags;
return false;
}
//
// P_CheckPosition
// This is purely informative, nothing is modified
// (except things picked up and missile damage applied).
//
// in:
// a AActor (can be valid or invalid)
// a position to be checked
// (doesn't need to be related to the AActor->x,y)
//
// during:
// special things are touched if MF_PICKUP
// early out on solid lines?
//
// out:
// newsubsec
// floorz
// ceilingz
// tmdropoffz = the lowest point contacted (monsters won't move to a dropoff)
// speciallines[]
// numspeciallines
// AActor *BlockingMobj = pointer to thing that blocked position (NULL if not
// blocked, or blocked by a line).
BOOL P_CheckPosition (AActor *thing, fixed_t x, fixed_t y)
{
static TArray<AActor *> checkpbt;
int xl, xh;
int yl, yh;
int bx, by;
subsector_t *newsubsec;
AActor *thingblocker;
AActor *fakedblocker;
fixed_t realheight = thing->height;
tmthing = thing;
tmflags = thing->flags;
tmx = x;
tmy = y;
tmbbox[BOXTOP] = y + thing->radius;
tmbbox[BOXBOTTOM] = y - thing->radius;
tmbbox[BOXRIGHT] = x + thing->radius;
tmbbox[BOXLEFT] = x - thing->radius;
newsubsec = R_PointInSubsector (x,y);
ceilingline = BlockingLine = NULL;
// The base floor / ceiling is from the subsector that contains the point.
// Any contacted lines the step closer together will adjust them.
tmfloorz = tmdropoffz = newsubsec->sector->floorplane.ZatPoint (x, y);
tmceilingz = newsubsec->sector->ceilingplane.ZatPoint (x, y);
tmfloorpic = newsubsec->sector->floorpic;
tmfloorsector = newsubsec->sector;
tmceilingpic = newsubsec->sector->ceilingpic;
tmceilingsector = newsubsec->sector;
//Added by MC: Fill the tmsector.
tmsector = newsubsec->sector;
validcount++;
spechit.Clear ();
checkpbt.Clear ();
if ((tmflags & MF_NOCLIP) && !(tmflags & MF_SKULLFLY))
return true;
// Check things first, possibly picking things up.
// The bounding box is extended by MAXRADIUS
// because DActors are grouped into mapblocks
// based on their origin point, and can overlap
// into adjacent blocks by up to MAXRADIUS units.
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
BlockingMobj = NULL;
thingblocker = NULL;
fakedblocker = NULL;
if (thing->player)
{ // [RH] Fake taller height to catch stepping up into things.
thing->height = realheight + thing->MaxStepHeight;
}
stepthing = NULL;
for (bx = xl; bx <= xh; bx++)
{
for (by = yl; by <= yh; by++)
{
AActor *robin = NULL;
do
{
if (!P_BlockThingsIterator (bx, by, PIT_CheckThing, checkpbt, robin))
{ // [RH] If a thing can be stepped up on, we need to continue checking
// other things in the blocks and see if we hit something that is
// definitely blocking. Otherwise, we need to check the lines, or we
// could end up stuck inside a wall.
if (BlockingMobj == NULL || (i_compatflags & COMPATF_NO_PASSMOBJ))
{ // Thing slammed into something; don't let it move now.
thing->height = realheight;
return false;
}
else if (!BlockingMobj->player && !(thing->flags & (MF_FLOAT|MF_MISSILE|MF_SKULLFLY)) &&
BlockingMobj->z+BlockingMobj->height-thing->z <= thing->MaxStepHeight)
{
if (thingblocker == NULL ||
BlockingMobj->z > thingblocker->z)
{
thingblocker = BlockingMobj;
}
robin = BlockingMobj;
BlockingMobj = NULL;
}
else if (thing->player &&
thing->z + thing->height - BlockingMobj->z <= thing->MaxStepHeight)
{
if (thingblocker)
{ // There is something to step up on. Return this thing as
// the blocker so that we don't step up.
thing->height = realheight;
return false;
}
// Nothing is blocking us, but this actor potentially could
// if there is something else to step on.
fakedblocker = BlockingMobj;
robin = BlockingMobj;
BlockingMobj = NULL;
}
else
{ // Definitely blocking
thing->height = realheight;
return false;
}
}
else
{
robin = NULL;
}
} while (robin);
}
}
// check lines
// [RH] We need to increment validcount again, because a function above may
// have already set some lines to equal the current validcount.
//
// Specifically, when DehackedPickup spawns a new item in its TryPickup()
// function, that new actor will set the lines around it to match validcount
// when it links itself into the world. If we just leave validcount alone,
// that will give the player the freedom to walk through walls at will near
// a pickup they cannot get, because their validcount will prevent them from
// being considered for collision with the player.
validcount++;
BlockingMobj = NULL;
thing->height = realheight;
if (tmflags & MF_NOCLIP)
return (BlockingMobj = thingblocker) == NULL;
xl = (tmbbox[BOXLEFT] - bmaporgx)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy)>>MAPBLOCKSHIFT;
fixed_t thingdropoffz = tmfloorz;
//bool onthing = (thingdropoffz != tmdropoffz);
tmfloorz = tmdropoffz;
for (bx=xl ; bx<=xh ; bx++)
for (by=yl ; by<=yh ; by++)
if (!P_BlockLinesIterator (bx,by,PIT_CheckLine))
return false;
if (tmceilingz - tmfloorz < thing->height)
return false;
if (stepthing != NULL)
{
tmdropoffz = thingdropoffz;
}
return (BlockingMobj = thingblocker) == NULL;
}
//=============================================================================
//
// P_CheckOnmobj(AActor *thing)
//
// Checks if the new Z position is legal
//=============================================================================
AActor *P_CheckOnmobj (AActor *thing)
{
fixed_t oldz;
bool good;
oldz = thing->z;
P_FakeZMovement (thing);
good = P_TestMobjZ (thing);
thing->z = oldz;
return good ? NULL : onmobj;
}
//=============================================================================
//
// P_TestMobjZ
//
//=============================================================================
bool P_TestMobjZ (AActor *actor)
{
static TArray<AActor *> mobjzbt;
int xl,xh,yl,yh,bx,by;
fixed_t x, y;
if (actor->flags & MF_NOCLIP)
return true;
tmx = x = actor->x;
tmy = y = actor->y;
tmthing = actor;
tmbbox[BOXTOP] = y + actor->radius;
tmbbox[BOXBOTTOM] = y - actor->radius;
tmbbox[BOXRIGHT] = x + actor->radius;
tmbbox[BOXLEFT] = x - actor->radius;
//
// the bounding box is extended by MAXRADIUS because actors are grouped
// into mapblocks based on their origin point, and can overlap into adjacent
// blocks by up to MAXRADIUS units
//
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
mobjzbt.Clear();
for (bx = xl; bx <= xh; bx++)
for (by = yl; by <= yh; by++)
if (!P_BlockThingsIterator (bx, by, PIT_CheckOnmobjZ, mobjzbt))
return false;
return true;
}
//=============================================================================
//
// P_FakeZMovement
//
// Fake the zmovement so that we can check if a move is legal
//=============================================================================
void P_FakeZMovement (AActor *mo)
{
//
// 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))
{
fixed_t dist = P_AproxDistance (mo->x - mo->target->x, mo->y - mo->target->y);
fixed_t delta = (mo->target->z + (mo->height>>1)) - mo->z;
if (delta < 0 && dist < -(delta*3))
mo->z -= mo->FloatSpeed;
else if (delta > 0 && dist < (delta*3))
mo->z += mo->FloatSpeed;
}
}
if (mo->player && mo->flags&MF_NOGRAVITY && (mo->z > mo->floorz))
{
mo->z += finesine[(FINEANGLES/80*level.maptime)&FINEMASK]/8;
}
//
// clip movement
//
if (mo->z <= mo->floorz)
{ // hit the floor
mo->z = mo->floorz;
}
if (mo->z + mo->height > mo->ceilingz)
{ // hit the ceiling
mo->z = mo->ceilingz - mo->height;
}
}
//===========================================================================
//
// CheckForPushSpecial
//
//===========================================================================
static void CheckForPushSpecial (line_t *line, int side, AActor *mobj)
{
if (line->special)
{
if (mobj->flags2 & MF2_PUSHWALL)
{
P_ActivateLine (line, mobj, side, SPAC_PUSH);
}
else if (mobj->flags2 & MF2_IMPACT)
{
P_ActivateLine (line, ((mobj->flags & MF_MISSILE) && (mobj->target != NULL))
? mobj->target : mobj, side, SPAC_IMPACT);
}
}
}
//
// P_TryMove
// Attempt to move to a new position,
// crossing special lines unless MF_TELEPORT is set.
//
BOOL P_TryMove (AActor *thing, fixed_t x, fixed_t y,
BOOL dropoff, // killough 3/15/98: allow dropoff as option
bool onfloor) // [RH] Let P_TryMove keep the thing on the floor
{
fixed_t oldx;
fixed_t oldy;
fixed_t oldz;
int side;
int oldside;
line_t* ld;
sector_t* oldsec = thing->Sector; // [RH] for sector actions
sector_t* newsec;
floatok = false;
oldz = thing->z;
if (onfloor)
{
thing->z = thing->floorsector->floorplane.ZatPoint (x, y);
}
if (!P_CheckPosition (thing, x, y))
{
// Solid wall or thing
if (!BlockingMobj || BlockingMobj->player || !thing->player)
{
goto pushline;
}
else
{
if (BlockingMobj->player || !thing->player)
{
goto pushline;
}
else if (BlockingMobj->z+BlockingMobj->height-thing->z
> thing->MaxStepHeight
|| (BlockingMobj->Sector->ceilingplane.ZatPoint (x, y)
- (BlockingMobj->z+BlockingMobj->height) < thing->height)
|| (tmceilingz-(BlockingMobj->z+BlockingMobj->height)
< thing->height))
{
goto pushline;
}
}
if (!(tmthing->flags2 & MF2_PASSMOBJ) || (i_compatflags & COMPATF_NO_PASSMOBJ))
{
thing->z = oldz;
return false;
}
}
if (onfloor && tmfloorsector == thing->floorsector)
{
thing->z = tmfloorz;
}
if (!(thing->flags & MF_NOCLIP))
{
if (tmceilingz - tmfloorz < thing->height)
{
goto pushline; // doesn't fit
}
floatok = true;
if (!(thing->flags & MF_TELEPORT)
&& tmceilingz - thing->z < thing->height
&& !(thing->flags3 & MF3_CEILINGHUGGER)
&& (!(thing->flags2 & MF2_FLY) || !(thing->flags & MF_NOGRAVITY)))
{
goto pushline; // mobj must lower itself to fit
}
if (thing->flags2 & MF2_FLY && thing->flags & MF_NOGRAVITY)
{
#if 1
if (thing->z+thing->height > tmceilingz)
goto pushline;
#else
// When flying, slide up or down blocking lines until the actor
// is not blocked.
if (thing->z+thing->height > tmceilingz)
{
thing->momz = -8*FRACUNIT;
goto pushline;
}
else if (thing->z < tmfloorz && tmfloorz-tmdropoffz > thing->MaxDropOffHeight)
{
thing->momz = 8*FRACUNIT;
goto pushline;
}
#endif
}
if (!(thing->flags & MF_TELEPORT) && !(thing->flags3 & MF3_FLOORHUGGER))
{
if (tmfloorz-thing->z > thing->MaxStepHeight)
{ // too big a step up
goto pushline;
}
else if ((thing->flags & MF_MISSILE) && tmfloorz > thing->z)
{ // [RH] Don't let normal missiles climb steps
goto pushline;
}
else if (thing->z < tmfloorz)
{ // [RH] Check to make sure there's nothing in the way for the step up
fixed_t savedz = thing->z;
bool good;
thing->z = tmfloorz;
good = P_TestMobjZ (thing);
thing->z = savedz;
if (!good)
{
goto pushline;
}
}
}
// killough 3/15/98: Allow certain objects to drop off
if ((!dropoff && !(thing->flags & (MF_DROPOFF|MF_FLOAT|MF_MISSILE))) || (thing->flags5&MF5_NODROPOFF))
{
fixed_t floorz = tmfloorz;
// [RH] If the thing is standing on something, use its current z as the floorz.
// This is so that it does not walk off of things onto a drop off.
if (thing->flags2 & MF2_ONMOBJ)
{
floorz = MAX(thing->z, tmfloorz);
}
if (!(thing->flags5&MF5_AVOIDINGDROPOFF))
{
if (floorz - tmdropoffz > thing->MaxDropOffHeight &&
!(thing->flags2 & MF2_BLASTED))
{ // Can't move over a dropoff unless it's been blasted
thing->z = oldz;
return false;
}
}
else
{
// special logic to move a monster off a dropoff
if (thing->floorz - floorz > thing->MaxDropOffHeight ||
thing->dropoffz - tmdropoffz > thing->MaxDropOffHeight) return false;
}
}
if (thing->flags2 & MF2_CANTLEAVEFLOORPIC
&& (tmfloorpic != thing->Sector->floorpic
|| tmfloorz - thing->z != 0))
{ // must stay within a sector of a certain floor type
thing->z = oldz;
return false;
}
//Added by MC: To prevent bot from getting into dangerous sectors.
if (thing->player && thing->player->isbot && thing->flags & MF_SHOOTABLE)
{
if (tmsector != thing->Sector
&& bglobal.IsDangerous (tmsector))
{
thing->player->prev = thing->player->dest;
thing->player->dest = NULL;
thing->momx = 0;
thing->momy = 0;
thing->z = oldz;
return false;
}
}
}
// [RH] Check status of eyes against fake floor/ceiling in case
// it slopes or the player's eyes are bobbing in and out.
bool oldAboveFakeFloor, oldAboveFakeCeiling;
fixed_t viewheight;
viewheight = thing->player ? thing->player->viewheight : thing->height / 2;
oldAboveFakeFloor = oldAboveFakeCeiling = false; // pacify GCC
if (oldsec->heightsec)
{
fixed_t eyez = oldz + viewheight;
oldAboveFakeFloor = eyez > oldsec->heightsec->floorplane.ZatPoint (thing->x, thing->y);
oldAboveFakeCeiling = eyez > oldsec->heightsec->ceilingplane.ZatPoint (thing->x, thing->y);
}
// the move is ok, so link the thing into its new position
thing->UnlinkFromWorld ();
oldx = thing->x;
oldy = thing->y;
thing->floorz = tmfloorz;
thing->ceilingz = tmceilingz;
thing->dropoffz = tmdropoffz; // killough 11/98: keep track of dropoffs
thing->floorpic = tmfloorpic;
thing->floorsector = tmfloorsector;
thing->ceilingpic = tmceilingpic;
thing->ceilingsector = tmceilingsector;
thing->x = x;
thing->y = y;
thing->LinkToWorld ();
if (thing->flags2 & MF2_FLOORCLIP)
{
thing->AdjustFloorClip ();
}
// [RH] Don't activate anything if just predicting
if (thing->player && (thing->player->cheats & CF_PREDICTING))
{
return true;
}
// if any special lines were hit, do the effect
if (!(thing->flags & (MF_TELEPORT|MF_NOCLIP)))
{
while (spechit.Pop (ld))
{
// see if the line was crossed
side = P_PointOnLineSide (thing->x, thing->y, ld);
oldside = P_PointOnLineSide (oldx, oldy, ld);
if (side != oldside && ld->special)
{
if (thing->player)
{
P_ActivateLine (ld, thing, oldside, SPAC_CROSS);
}
else if (thing->flags2 & MF2_MCROSS)
{
P_ActivateLine (ld, thing, oldside, SPAC_MCROSS);
}
else if (thing->flags2 & MF2_PCROSS)
{
P_ActivateLine (ld, thing, oldside, SPAC_PCROSS);
}
else if ((ld->special == Teleport ||
ld->special == Teleport_NoFog ||
ld->special == Teleport_Line))
{ // [RH] Just a little hack for BOOM compatibility
P_ActivateLine (ld, thing, oldside, SPAC_MCROSS);
}
else
{
// I don't think allowing non-monsters to activate
// monster-allowed lines will hurt Hexen compatibility.
P_ActivateLine (ld, thing, oldside, SPAC_OTHERCROSS);
}
}
}
}
// [RH] Check for crossing fake floor/ceiling
newsec = thing->Sector;
if (newsec->heightsec && oldsec->heightsec && newsec->SecActTarget)
{
const sector_t *hs = newsec->heightsec;
fixed_t eyez = thing->z + viewheight;
fixed_t fakez = hs->floorplane.ZatPoint (x, y);
if (!oldAboveFakeFloor && eyez > fakez)
{ // View went above fake floor
newsec->SecActTarget->TriggerAction (thing, SECSPAC_EyesSurface);
}
else if (oldAboveFakeFloor && eyez <= fakez)
{ // View went below fake floor
newsec->SecActTarget->TriggerAction (thing, SECSPAC_EyesDive);
}
if (!(hs->MoreFlags & SECF_FAKEFLOORONLY))
{
fakez = hs->ceilingplane.ZatPoint (x, y);
if (!oldAboveFakeCeiling && eyez > fakez)
{ // View went above fake ceiling
newsec->SecActTarget->TriggerAction (thing, SECSPAC_EyesAboveC);
}
else if (oldAboveFakeCeiling && eyez <= fakez)
{ // View went below fake ceiling
newsec->SecActTarget->TriggerAction (thing, SECSPAC_EyesBelowC);
}
}
}
// [RH] If changing sectors, trigger transitions
if (oldsec != newsec)
{
if (oldsec->SecActTarget)
{
oldsec->SecActTarget->TriggerAction (thing, SECSPAC_Exit);
}
if (newsec->SecActTarget)
{
int act = SECSPAC_Enter;
if (thing->z <= newsec->floorplane.ZatPoint (thing->x, thing->y))
{
act |= SECSPAC_HitFloor;
}
if (thing->z + thing->height >= newsec->ceilingplane.ZatPoint (thing->x, thing->y))
{
act |= SECSPAC_HitCeiling;
}
if (newsec->heightsec &&
thing->z == newsec->heightsec->floorplane.ZatPoint (thing->x, thing->y))
{
act |= SECSPAC_HitFakeFloor;
}
newsec->SecActTarget->TriggerAction (thing, act);
}
}
return true;
pushline:
// [RH] Don't activate anything if just predicting
if (thing->player && (thing->player->cheats & CF_PREDICTING))
{
return false;
}
thing->z = oldz;
if (!(thing->flags&(MF_TELEPORT|MF_NOCLIP)))
{
int numSpecHitTemp;
if (tmthing->flags2 & MF2_BLASTED)
{
P_DamageMobj (tmthing, NULL, NULL, tmthing->Mass >> 5, MOD_HIT);
}
numSpecHitTemp = (int)spechit.Size ();
while (numSpecHitTemp > 0)
{
// see which lines were pushed
ld = spechit[--numSpecHitTemp];
side = P_PointOnLineSide (thing->x, thing->y, ld);
CheckForPushSpecial (ld, side, thing);
}
}
return false;
}
//
// SLIDE MOVE
// Allows the player to slide along any angled walls.
//
fixed_t bestslidefrac;
fixed_t secondslidefrac;
line_t* bestslideline;
line_t* secondslideline;
AActor* slidemo;
fixed_t tmxmove;
fixed_t tmymove;
extern BOOL onground;
//
// P_HitSlideLine
// Adjusts the xmove / ymove
// so that the next move will slide along the wall.
// If the floor is icy, then you can bounce off a wall. // phares
//
void P_HitSlideLine (line_t* ld)
{
int side;
angle_t lineangle;
angle_t moveangle;
angle_t deltaangle;
fixed_t movelen;
BOOL icyfloor; // is floor icy? // phares
// |
// Under icy conditions, if the angle of approach to the wall // V
// is more than 45 degrees, then you'll bounce and lose half
// your momentum. If less than 45 degrees, you'll slide along
// the wall. 45 is arbitrary and is believable.
// Check for the special cases of horz or vert walls.
// killough 10/98: only bounce if hit hard (prevents wobbling)
icyfloor =
(P_AproxDistance(tmxmove, tmymove) > 4*FRACUNIT) &&
var_friction && // killough 8/28/98: calc friction on demand
slidemo->z <= slidemo->floorz &&
P_GetFriction (slidemo, NULL) > ORIG_FRICTION;
if (ld->slopetype == ST_HORIZONTAL)
{
if (icyfloor && (abs(tmymove) > abs(tmxmove)))
{
tmxmove /= 2; // absorb half the momentum
tmymove = -tmymove/2;
if (slidemo->player && slidemo->health > 0 && !(slidemo->player->cheats & CF_PREDICTING))
{
S_Sound (slidemo, CHAN_VOICE, "*grunt", 1, ATTN_IDLE); // oooff!
}
}
else
tmymove = 0; // no more movement in the Y direction
return;
}
if (ld->slopetype == ST_VERTICAL)
{
if (icyfloor && (abs(tmxmove) > abs(tmymove)))
{
tmxmove = -tmxmove/2; // absorb half the momentum
tmymove /= 2;
if (slidemo->player && slidemo->health > 0 && !(slidemo->player->cheats & CF_PREDICTING))
{
S_Sound (slidemo, CHAN_VOICE, "*grunt", 1, ATTN_IDLE); // oooff!// ^
}
} // |
else // phares
tmxmove = 0; // no more movement in the X direction
return;
}
// The wall is angled. Bounce if the angle of approach is // phares
// less than 45 degrees. // phares
side = P_PointOnLineSide (slidemo->x, slidemo->y, ld);
lineangle = R_PointToAngle2 (0,0, ld->dx, ld->dy);
if (side == 1)
lineangle += ANG180;
moveangle = R_PointToAngle2 (0,0, tmxmove, tmymove);
moveangle += 10; // prevents sudden path reversal due to // phares
// rounding error // |
deltaangle = moveangle-lineangle; // V
movelen = P_AproxDistance (tmxmove, tmymove);
if (icyfloor && (deltaangle > ANG45) && (deltaangle < ANG90+ANG45))
{
moveangle = lineangle - deltaangle;
movelen /= 2; // absorb
if (slidemo->player && slidemo->health > 0 && !(slidemo->player->cheats & CF_PREDICTING))
{
S_Sound (slidemo, CHAN_VOICE, "*grunt", 1, ATTN_IDLE); // oooff!
}
moveangle >>= ANGLETOFINESHIFT;
tmxmove = FixedMul (movelen, finecosine[moveangle]);
tmymove = FixedMul (movelen, finesine[moveangle]);
} // ^
else // |
{ // phares
#if 0
fixed_t newlen;
if (deltaangle > ANG180)
deltaangle += ANG180;
// I_Error ("SlideLine: ang>ANG180");
lineangle >>= ANGLETOFINESHIFT;
deltaangle >>= ANGLETOFINESHIFT;
newlen = FixedMul (movelen, finecosine[deltaangle]);
tmxmove = FixedMul (newlen, finecosine[lineangle]);
tmymove = FixedMul (newlen, finesine[lineangle]);
#else
divline_t dll, dlv;
fixed_t inter1, inter2, inter3;
P_MakeDivline (ld, &dll);
dlv.x = slidemo->x;
dlv.y = slidemo->y;
dlv.dx = dll.dy;
dlv.dy = -dll.dx;
inter1 = P_InterceptVector(&dll, &dlv);
dlv.dx = tmxmove;
dlv.dy = tmymove;
inter2 = P_InterceptVector (&dll, &dlv);
inter3 = P_InterceptVector (&dlv, &dll);
if (inter3 != 0)
{
tmxmove = Scale (inter2-inter1, dll.dx, inter3);
tmymove = Scale (inter2-inter1, dll.dy, inter3);
}
else
{
tmxmove = tmymove = 0;
}
#endif
} // phares
}
//
// PTR_SlideTraverse
//
BOOL PTR_SlideTraverse (intercept_t* in)
{
line_t* li;
if (!in->isaline)
I_Error ("PTR_SlideTraverse: not a line?");
li = in->d.line;
if ( !(li->flags & ML_TWOSIDED) )
{
if (P_PointOnLineSide (slidemo->x, slidemo->y, li))
{
// don't hit the back side
return true;
}
goto isblocking;
}
if (li->flags & (ML_BLOCKING|ML_BLOCKEVERYTHING))
{
goto isblocking;
}
// set openrange, opentop, openbottom
P_LineOpening (li, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac));
if (openrange < slidemo->height)
goto isblocking; // doesn't fit
if (opentop - slidemo->z < slidemo->height)
goto isblocking; // mobj is too high
if (openbottom - slidemo->z > slidemo->MaxStepHeight)
{
goto isblocking; // too big a step up
}
else if (slidemo->z < openbottom)
{ // [RH] Check to make sure there's nothing in the way for the step up
fixed_t savedz = slidemo->z;
slidemo->z = openbottom;
bool good = P_TestMobjZ (slidemo);
slidemo->z = savedz;
if (!good)
{
goto isblocking;
}
}
// this line doesn't block movement
return true;
// the line does block movement,
// see if it is closer than best so far
isblocking:
if (in->frac < bestslidefrac)
{
secondslidefrac = bestslidefrac;
secondslideline = bestslideline;
bestslidefrac = in->frac;
bestslideline = li;
}
return false; // stop
}
//
// P_SlideMove
//
// The momx / momy move is bad, so try to slide along a wall.
//
// Find the first line hit, move flush to it, and slide along it
//
// This is a kludgy mess.
//
void P_SlideMove (AActor *mo, fixed_t tryx, fixed_t tryy, int numsteps)
{
fixed_t leadx, leady;
fixed_t trailx, traily;
fixed_t newx, newy;
fixed_t xmove, ymove;
bool walkplane;
int hitcount;
slidemo = mo;
hitcount = 3;
retry:
if (!--hitcount)
goto stairstep; // don't loop forever
// trace along the three leading corners
if (tryx > 0)
{
leadx = mo->x + mo->radius;
trailx = mo->x - mo->radius;
}
else
{
leadx = mo->x - mo->radius;
trailx = mo->x + mo->radius;
}
if (tryy > 0)
{
leady = mo->y + mo->radius;
traily = mo->y - mo->radius;
}
else
{
leady = mo->y - mo->radius;
traily = mo->y + mo->radius;
}
bestslidefrac = FRACUNIT+1;
P_PathTraverse (leadx, leady, leadx+tryx, leady+tryy, PT_ADDLINES, PTR_SlideTraverse);
P_PathTraverse (trailx, leady, trailx+tryx, leady+tryy, PT_ADDLINES, PTR_SlideTraverse);
P_PathTraverse (leadx, traily, leadx+tryx, traily+tryy, PT_ADDLINES, PTR_SlideTraverse);
// move up to the wall
if (bestslidefrac == FRACUNIT+1)
{
// the move must have hit the middle, so stairstep
stairstep:
// killough 3/15/98: Allow objects to drop off ledges
xmove = 0, ymove = tryy;
walkplane = P_CheckSlopeWalk (mo, xmove, ymove);
if (!P_TryMove (mo, mo->x + xmove, mo->y + ymove, true, walkplane))
{
xmove = tryx, ymove = 0;
walkplane = P_CheckSlopeWalk (mo, xmove, ymove);
P_TryMove (mo, mo->x + xmove, mo->y + ymove, true, walkplane);
}
return;
}
// fudge a bit to make sure it doesn't hit
bestslidefrac -= FRACUNIT/32;
if (bestslidefrac > 0)
{
newx = FixedMul (tryx, bestslidefrac);
newy = FixedMul (tryy, bestslidefrac);
// killough 3/15/98: Allow objects to drop off ledges
if (!P_TryMove (mo, mo->x+newx, mo->y+newy, true))
goto stairstep;
}
// Now continue along the wall.
bestslidefrac = FRACUNIT - (bestslidefrac + FRACUNIT/32); // remainder
if (bestslidefrac > FRACUNIT)
bestslidefrac = FRACUNIT;
else if (bestslidefrac <= 0)
return;
tryx = tmxmove = FixedMul (tryx, bestslidefrac);
tryy = tmymove = FixedMul (tryy, bestslidefrac);
P_HitSlideLine (bestslideline); // clip the moves
mo->momx = tmxmove * numsteps;
mo->momy = tmymove * numsteps;
// killough 10/98: affect the bobbing the same way (but not voodoo dolls)
if (mo->player && mo->player->mo == mo)
{
if (abs(mo->player->momx) > abs(mo->momx))
mo->player->momx = mo->momx;
if (abs(mo->player->momy) > abs(mo->momy))
mo->player->momy = mo->momy;
}
walkplane = P_CheckSlopeWalk (mo, tmxmove, tmymove);
// killough 3/15/98: Allow objects to drop off ledges
if (!P_TryMove (mo, mo->x+tmxmove, mo->y+tmymove, true, walkplane))
{
goto retry;
}
}
//============================================================================
//
// P_CheckSlopeWalk
//
//============================================================================
bool P_CheckSlopeWalk (AActor *actor, fixed_t &xmove, fixed_t &ymove)
{
if (actor->flags & MF_NOGRAVITY)
{
return false;
}
const secplane_t *plane = &actor->floorsector->floorplane;
fixed_t planezhere = plane->ZatPoint (actor->x, actor->y);
if (actor->floorsector != actor->Sector)
{
// this additional check prevents sliding on sloped dropoffs
if (planezhere>actor->floorz+4*FRACUNIT)
return false;
}
if (actor->z - planezhere > FRACUNIT)
{ // not on floor
return false;
}
if ((plane->a | plane->b) != 0)
{
fixed_t destx, desty;
fixed_t t;
destx = actor->x + xmove;
desty = actor->y + ymove;
t = TMulScale16 (plane->a, destx, plane->b, desty, plane->c, actor->z) + plane->d;
if (t < 0)
{ // Desired location is behind (below) the plane
// (i.e. Walking up the plane)
if (plane->c < STEEPSLOPE)
{ // Can't climb up slopes of ~45 degrees or more
if (actor->flags & MF_NOCLIP)
{
return true;
}
else
{
const msecnode_t *node;
bool dopush = true;
if (plane->c > STEEPSLOPE*2/3)
{
for (node = actor->touching_sectorlist; node; node = node->m_tnext)
{
const sector_t *sec = node->m_sector;
if (sec->floorplane.c >= STEEPSLOPE)
{
if (sec->floorplane.ZatPoint (destx, desty) >= actor->z - actor->MaxStepHeight)
{
dopush = false;
break;
}
}
}
}
if (dopush)
{
xmove = actor->momx = plane->a * 2;
ymove = actor->momy = plane->b * 2;
}
return false;
}
}
// Slide the desired location along the plane's normal
// so that it lies on the plane's surface
destx -= FixedMul (plane->a, t);
desty -= FixedMul (plane->b, t);
xmove = destx - actor->x;
ymove = desty - actor->y;
return true;
}
else if (t > 0)
{ // Desired location is in front of (above) the plane
if (planezhere == actor->z)
{ // Actor's current spot is on/in the plane, so walk down it
// Same principle as walking up, except reversed
destx += FixedMul (plane->a, t);
desty += FixedMul (plane->b, t);
xmove = destx - actor->x;
ymove = desty - actor->y;
return true;//(plane->c >= STEEPSLOPE);
}
}
}
return false;
}
//============================================================================
//
// PTR_BounceTraverse
//
//============================================================================
BOOL PTR_BounceTraverse (intercept_t *in)
{
line_t *li;
if (!in->isaline)
I_Error ("PTR_BounceTraverse: not a line?");
li = in->d.line;
if (li->flags & ML_BLOCKEVERYTHING)
{
goto bounceblocking;
}
if (!(li->flags&ML_TWOSIDED))
{
if (P_PointOnLineSide (slidemo->x, slidemo->y, li))
return true; // don't hit the back side
goto bounceblocking;
}
P_LineOpening (li, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac)); // set openrange, opentop, openbottom
if (openrange < slidemo->height)
goto bounceblocking; // doesn't fit
if (opentop - slidemo->z < slidemo->height)
goto bounceblocking; // mobj is too high
return true; // this line doesn't block movement
// the line does block movement, see if it is closer than best so far
bounceblocking:
if (in->frac < bestslidefrac)
{
secondslidefrac = bestslidefrac;
secondslideline = bestslideline;
bestslidefrac = in->frac;
bestslideline = li;
}
return false; // stop
}
//============================================================================
//
// P_BounceWall
//
//============================================================================
bool P_BounceWall (AActor *mo)
{
fixed_t leadx, leady;
int side;
angle_t lineangle, moveangle, deltaangle;
fixed_t movelen;
line_t *line;
if (!(mo->flags2 & MF2_BOUNCE2))
{
return false;
}
if (BlockingLine != NULL)
{
line = BlockingLine;
}
else
{
slidemo = mo;
//
// trace along the three leading corners
//
if (mo->momx > 0)
{
leadx = mo->x+mo->radius;
}
else
{
leadx = mo->x-mo->radius;
}
if (mo->momy > 0)
{
leady = mo->y+mo->radius;
}
else
{
leady = mo->y-mo->radius;
}
bestslidefrac = FRACUNIT+1;
if (P_PathTraverse(leadx, leady, leadx+mo->momx, leady+mo->momy,
PT_ADDLINES, PTR_BounceTraverse))
{ // Could not find a wall, so bounce off the floor/ceiling instead.
fixed_t floordist = mo->z - mo->floorz;
fixed_t ceildist = mo->ceilingz - mo->z;
if (floordist <= ceildist)
{
mo->FloorBounceMissile (mo->Sector->floorplane);
return true;
}
else
{
mo->FloorBounceMissile (mo->Sector->ceilingplane);
return true;
}
/*
else
{
return (mo->flags2 & MF2_BOUNCE2) != 0;
}
*/
}
line = bestslideline;
}
if (line->special == Line_Horizon)
{
mo->SeeSound = 0; // it might make a sound otherwise
mo->Destroy();
return true;
}
side = P_PointOnLineSide (mo->x, mo->y, line);
lineangle = R_PointToAngle2 (0, 0, line->dx, line->dy);
if (side == 1)
{
lineangle += ANG180;
}
moveangle = R_PointToAngle2 (0, 0, mo->momx, mo->momy);
deltaangle = (2*lineangle)-moveangle;
mo->angle = deltaangle;
lineangle >>= ANGLETOFINESHIFT;
deltaangle >>= ANGLETOFINESHIFT;
movelen = P_AproxDistance (mo->momx, mo->momy);
movelen = (movelen * 192) >> 8; // friction
fixed_t box[4];
box[BOXTOP] = mo->y + mo->radius;
box[BOXBOTTOM] = mo->y - mo->radius;
box[BOXLEFT] = mo->x - mo->radius;
box[BOXRIGHT] = mo->x + mo->radius;
if (P_BoxOnLineSide (box, line) == -1)
{
mo->SetOrigin (mo->x + FixedMul(mo->radius,
finecosine[deltaangle]), mo->y + FixedMul(mo->radius, finesine[deltaangle]), mo->z);;
}
if (movelen < FRACUNIT)
{
movelen = 2*FRACUNIT;
}
mo->momx = FixedMul(movelen, finecosine[deltaangle]);
mo->momy = FixedMul(movelen, finesine[deltaangle]);
return true;
}
//
// P_LineAttack
//
AActor* linetarget; // who got hit (or NULL)
AActor* shootthing;
// Height if not aiming up or down
// ???: use slope for monsters?
fixed_t shootz;
fixed_t attackrange;
fixed_t aimpitch;
// slopes to top and bottom of target
// killough 4/20/98: make static instead of using ones in p_sight.c
// [RH] made these angles instead of slopes
static fixed_t toppitch;
static fixed_t bottompitch;
//
// PTR_AimTraverse
// Sets linetaget and aimpitch when a target is aimed at.
//
BOOL PTR_AimTraverse (intercept_t* in)
{
line_t* li;
AActor* th;
fixed_t pitch;
fixed_t thingtoppitch;
fixed_t thingbottompitch;
fixed_t dist;
if (in->isaline)
{
li = in->d.line;
if ( !(li->flags & ML_TWOSIDED) || (li->flags & ML_BLOCKEVERYTHING) )
return false; // stop
// Crosses a two sided line.
// A two sided line will restrict the possible target ranges.
P_LineOpening (li, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac));
if (openbottom >= opentop)
return false; // stop
dist = FixedMul (attackrange, in->frac);
pitch = -(int)R_PointToAngle2 (0, shootz, dist, openbottom);
if (pitch < bottompitch)
bottompitch = pitch;
pitch = -(int)R_PointToAngle2 (0, shootz, dist, opentop);
if (pitch > toppitch)
toppitch = pitch;
if (toppitch >= bottompitch)
return false; // stop
return true; // shot continues
}
// shoot a thing
th = in->d.thing;
if (th == shootthing)
return true; // can't shoot self
if (!(th->flags&MF_SHOOTABLE))
return true; // corpse or something
// check for physical attacks on a ghost
if ((th->flags3 & MF3_GHOST) &&
shootthing->player && // [RH] Be sure shootthing is a player
shootthing->player->ReadyWeapon &&
(shootthing->player->ReadyWeapon->flags2 & MF2_THRUGHOST))
{
return true;
}
// check angles to see if the thing can be aimed at
dist = FixedMul (attackrange, in->frac);
thingtoppitch = -(int)R_PointToAngle2 (0, shootz, dist, th->z + th->height);
if (thingtoppitch > bottompitch)
return true; // shot over the thing
thingbottompitch = -(int)R_PointToAngle2 (0, shootz, dist, th->z);
if (thingbottompitch < toppitch)
return true; // shot under the thing
// this thing can be hit!
if (thingtoppitch < toppitch)
thingtoppitch = toppitch;
if (thingbottompitch > bottompitch)
thingbottompitch = bottompitch;
aimpitch = thingtoppitch/2 + thingbottompitch/2;
linetarget = th;
return false; // don't go any farther
}
//
// P_AimLineAttack
//
fixed_t P_AimLineAttack (AActor *t1, angle_t angle, fixed_t distance, fixed_t vrange)
{
fixed_t x2;
fixed_t y2;
angle >>= ANGLETOFINESHIFT;
shootthing = t1;
x2 = t1->x + (distance>>FRACBITS)*finecosine[angle];
y2 = t1->y + (distance>>FRACBITS)*finesine[angle];
shootz = t1->z + (t1->height>>1) + 8*FRACUNIT;
// can't shoot outside view angles
if (vrange == 0)
{
if (t1->player == NULL || dmflags & DF_NO_FREELOOK)
{
vrange = ANGLE_1*35;
}
else
{
// 35 degrees is approximately what Doom used. You cannot have a
// vrange of 0 degrees, because then toppitch and bottompitch will
// be equal, and PTR_AimTraverse will never find anything to shoot at
// if it crosses a line.
vrange = clamp (t1->player->userinfo.aimdist, ANGLE_1/2, ANGLE_1*35);
}
}
toppitch = t1->pitch - vrange;
bottompitch = t1->pitch + vrange;
attackrange = distance;
linetarget = NULL;
P_PathTraverse (t1->x, t1->y, x2, y2, PT_ADDLINES|PT_ADDTHINGS, PTR_AimTraverse);
if (linetarget)
return aimpitch;
return t1->pitch;
}
/*
=================
=
= P_LineAttack
=
= if damage == 0, it is just a test trace that will leave linetarget set
=
=================
*/
static bool CheckForGhost (FTraceResults &res)
{
if (res.HitType != TRACE_HitActor)
{
return false;
}
// check for physical attacks on a ghost
if (res.Actor->flags3 & MF3_GHOST || res.Actor->flags4 & MF4_SPECTRAL)
{
res.HitType = TRACE_HitNone;
return true;
}
return false;
}
static bool CheckForSpectral (FTraceResults &res)
{
if (res.HitType != TRACE_HitActor)
{
return false;
}
// check for physical attacks on spectrals
if (res.Actor->flags4 & MF4_SPECTRAL)
{
res.HitType = TRACE_HitNone;
return true;
}
return false;
}
void P_LineAttack (AActor *t1, angle_t angle, fixed_t distance,
int pitch, int damage, int damageType, const PClass *pufftype)
{
fixed_t vx, vy, vz, shootz;
FTraceResults trace;
angle_t srcangle = angle;
int srcpitch = pitch;
bool hitGhosts;
angle >>= ANGLETOFINESHIFT;
pitch = (angle_t)(pitch) >> ANGLETOFINESHIFT;
vx = FixedMul (finecosine[pitch], finecosine[angle]);
vy = FixedMul (finecosine[pitch], finesine[angle]);
vz = -finesine[pitch];
shootz = t1->z - t1->floorclip + (t1->height>>1) + 8*FRACUNIT;
attackrange = distance;
aimpitch = pitch;
hitGhosts = (t1->player != NULL &&
t1->player->ReadyWeapon != NULL &&
(t1->player->ReadyWeapon->flags2 & MF2_THRUGHOST));
if (!Trace (t1->x, t1->y, shootz, t1->Sector, vx, vy, vz, distance,
MF_SHOOTABLE, ML_BLOCKEVERYTHING, t1, trace,
TRACE_NoSky|TRACE_Impact, hitGhosts ? CheckForGhost : CheckForSpectral))
{ // hit nothing
AActor *puffDefaults = GetDefaultByType (pufftype);
if (puffDefaults->ActiveSound)
{ // Play miss sound
S_SoundID (t1, CHAN_WEAPON, puffDefaults->ActiveSound, 1, ATTN_NORM);
}
if (puffDefaults->flags3 & MF3_ALWAYSPUFF)
{ // Spawn the puff anyway
P_SpawnPuff (pufftype, trace.X, trace.Y, trace.Z, angle - ANG180, 2);
}
else
{
return;
}
}
else
{
fixed_t hitx = 0, hity = 0, hitz = 0;
AActor *puff = NULL;
if (trace.HitType != TRACE_HitActor)
{
// position a bit closer for puffs
if (trace.HitType != TRACE_HitWall || trace.Line->special != Line_Horizon)
{
fixed_t closer = trace.Distance - 4*FRACUNIT;
puff = P_SpawnPuff (pufftype, t1->x + FixedMul (vx, closer),
t1->y + FixedMul (vy, closer),
shootz + FixedMul (vz, closer), angle - ANG90, 0);
}
// [RH] Spawn a decal
if (trace.HitType == TRACE_HitWall && trace.Line->special != Line_Horizon)
{
SpawnShootDecal (t1, trace);
}
else if (puff != NULL &&
trace.CrossedWater == NULL &&
trace.Sector->heightsec == NULL &&
trace.HitType == TRACE_HitFloor)
{
P_HitWater (puff, trace.Sector);
}
}
else
{
bool bloodsplatter = (t1->flags5 & MF5_BLOODSPLATTER) ||
(t1->player != NULL && t1->player->ReadyWeapon != NULL &&
(t1->player->ReadyWeapon->WeaponFlags & WIF_AXEBLOOD));
bool axeBlood = (t1->player != NULL &&
t1->player->ReadyWeapon != NULL &&
(t1->player->ReadyWeapon->WeaponFlags & WIF_AXEBLOOD));
// Hit a thing, so it could be either a puff or blood
hitx = t1->x + FixedMul (vx, trace.Distance);
hity = t1->y + FixedMul (vy, trace.Distance);
hitz = shootz + FixedMul (vz, trace.Distance);
// Spawn bullet puffs or blood spots, depending on target type.
AActor *puffDefaults = GetDefaultByType (pufftype);
if ((puffDefaults->flags3 & MF3_PUFFONACTORS) ||
(trace.Actor->flags & MF_NOBLOOD) ||
(trace.Actor->flags2 & (MF2_INVULNERABLE|MF2_DORMANT)))
{
puff = P_SpawnPuff (pufftype, hitx, hity, hitz, angle - ANG180, 2, true);
}
if (!(GetDefaultByType(pufftype)->flags3&MF3_BLOODLESSIMPACT))
{
if (!bloodsplatter && !axeBlood &&
!(trace.Actor->flags & MF_NOBLOOD) &&
!(trace.Actor->flags2 & (MF2_INVULNERABLE|MF2_DORMANT)))
{
P_SpawnBlood (hitx, hity, hitz, angle - ANG180, damage, trace.Actor);
}
if (damage)
{
if (bloodsplatter || axeBlood)
{
if (!(trace.Actor->flags&MF_NOBLOOD) &&
!(trace.Actor->flags2&(MF2_INVULNERABLE|MF2_DORMANT)))
{
if (axeBlood)
{
P_BloodSplatter2 (hitx, hity, hitz, trace.Actor);
}
if (pr_lineattack() < 192)
{
P_BloodSplatter (hitx, hity, hitz, trace.Actor);
}
}
}
// [RH] Stick blood to walls
P_TraceBleed (damage, trace.X, trace.Y, trace.Z,
trace.Actor, srcangle, srcpitch);
}
}
if (damage) P_DamageMobj (trace.Actor, puff ? puff : t1, t1, damage, damageType);
}
if (trace.CrossedWater)
{
bool killPuff = false;
if (puff == NULL)
{ // Spawn puff just to get a mass for the splash
puff = P_SpawnPuff (pufftype, hitx, hity, hitz, angle - ANG180, 2, true);
killPuff = true;
}
SpawnDeepSplash (t1, trace, puff, vx, vy, vz);
if (killPuff)
{
puff->Destroy();
}
}
}
}
void P_TraceBleed (int damage, fixed_t x, fixed_t y, fixed_t z, AActor *actor, angle_t angle, int pitch)
{
if (!cl_bloodsplats)
return;
const char *bloodType = "BloodSplat";
int count;
int noise;
if ((actor->flags & MF_NOBLOOD) ||
(actor->flags2 & (MF2_INVULNERABLE|MF2_DORMANT)) ||
(actor->player && actor->player->cheats & CF_GODMODE))
{
return;
}
if (damage < 15)
{ // For low damages, there is a chance to not spray blood at all
if (damage <= 10)
{
if (pr_tracebleed() < 160)
{
return;
}
}
count = 1;
noise = 18;
}
else if (damage < 25)
{
count = 2;
noise = 19;
}
else
{ // For high damages, there is a chance to spray just one big glob of blood
if (pr_tracebleed() < 24)
{
bloodType = "BloodSmear";
count = 1;
noise = 20;
}
else
{
count = 3;
noise = 20;
}
}
for (; count; --count)
{
FTraceResults bleedtrace;
angle_t bleedang = (angle + ((pr_tracebleed()-128) << noise)) >> ANGLETOFINESHIFT;
angle_t bleedpitch = (angle_t)(pitch + ((pr_tracebleed()-128) << noise)) >> ANGLETOFINESHIFT;
fixed_t vx = FixedMul (finecosine[bleedpitch], finecosine[bleedang]);
fixed_t vy = FixedMul (finecosine[bleedpitch], finesine[bleedang]);
fixed_t vz = -finesine[bleedpitch];
if (Trace (x, y, z, actor->Sector,
vx, vy, vz, 172*FRACUNIT, 0, ML_BLOCKEVERYTHING, actor,
bleedtrace, TRACE_NoSky))
{
if (bleedtrace.HitType == TRACE_HitWall)
{
PalEntry bloodcolor = (PalEntry)actor->GetClass()->Meta.GetMetaInt(AMETA_BloodColor);
if (bloodcolor != 0)
{
bloodcolor.r>>=1; // the full color is too bright for blood decals
bloodcolor.g>>=1;
bloodcolor.b>>=1;
bloodcolor.a=1;
}
DImpactDecal::StaticCreate (bloodType,
bleedtrace.X, bleedtrace.Y, bleedtrace.Z,
sides + bleedtrace.Line->sidenum[bleedtrace.Side],
bloodcolor);
}
}
}
}
void P_TraceBleed (int damage, AActor *target, angle_t angle, int pitch)
{
P_TraceBleed (damage, target->x, target->y, target->z + target->height/2,
target, angle, pitch);
}
void P_TraceBleed (int damage, AActor *target, AActor *missile)
{
int pitch;
if (target == NULL || missile->flags3 & MF3_BLOODLESSIMPACT)
{
return;
}
if (missile->momz != 0)
{
double aim;
aim = atan ((double)missile->momz / (double)P_AproxDistance (missile->x - target->x, missile->y - target->y));
pitch = -(int)(aim * ANGLE_180/PI);
}
else
{
pitch = 0;
}
P_TraceBleed (damage, target->x, target->y, target->z + target->height/2,
target, R_PointToAngle2 (missile->x, missile->y, target->x, target->y),
pitch);
}
void P_TraceBleed (int damage, AActor *target)
{
fixed_t one = pr_tracebleed() << 24;
fixed_t two = (pr_tracebleed()-128) << 16;
P_TraceBleed (damage, target->x, target->y, target->z + target->height/2,
target, one, two);
}
//
// [RH] Rail gun stuffage
//
struct SRailHit
{
AActor *HitActor;
fixed_t Distance;
};
static TArray<SRailHit> RailHits (16);
static bool ProcessRailHit (FTraceResults &res)
{
if (res.HitType != TRACE_HitActor)
{
return false;
}
// Invulnerable things completely block the shot
if (res.Actor->flags2 & MF2_INVULNERABLE)
{
return false;
}
// Save this thing for damaging later, and continue the trace
SRailHit newhit;
newhit.HitActor = res.Actor;
newhit.Distance = res.Distance - 10*FRACUNIT; // put blood in front
RailHits.Push (newhit);
return true;
}
void P_RailAttack (AActor *source, int damage, int offset, int color1, int color2, float maxdiff, bool silent)
{
fixed_t vx, vy, vz;
angle_t angle, pitch;
fixed_t x1, y1;
vec3_t start, end;
FTraceResults trace;
pitch = (angle_t)(-source->pitch) >> ANGLETOFINESHIFT;
angle = source->angle >> ANGLETOFINESHIFT;
vx = FixedMul (finecosine[pitch], finecosine[angle]);
vy = FixedMul (finecosine[pitch], finesine[angle]);
vz = finesine[pitch];
x1 = source->x;
y1 = source->y;
shootz = source->z - source->floorclip + (source->height >> 1) + 8*FRACUNIT;
angle = (source->angle - ANG90) >> ANGLETOFINESHIFT;
x1 += offset*finecosine[angle];
y1 += offset*finesine[angle];
RailHits.Clear ();
VectorFixedSet (start, x1, y1, shootz);
Trace (x1, y1, shootz, source->Sector, vx, vy, vz,
8192*FRACUNIT, MF_SHOOTABLE, ML_BLOCKEVERYTHING, source, trace,
TRACE_PCross|TRACE_Impact, ProcessRailHit);
if (trace.HitType == TRACE_HitWall)
{
SpawnShootDecal (source, trace);
}
if (trace.HitType == TRACE_HitFloor &&
trace.CrossedWater == NULL &&
trace.Sector->heightsec == NULL)
{
fixed_t savex, savey, savez;
fixed_t savefloor, saveceil, savedropoff;
int savefloorpic;
sector_t *savefloorsec;
int saveceilingpic;
sector_t *saveceilingsec;
savex = source->x;
savey = source->y;
savez = source->z;
savefloor = source->floorz;
saveceil = source->ceilingz;
savedropoff = source->dropoffz;
savefloorpic = source->floorpic;
savefloorsec = source->floorsector;
saveceilingpic = source->ceilingpic;
saveceilingsec = source->ceilingsector;
source->SetOrigin (trace.X, trace.Y, trace.Z);
P_HitWater (source, trace.Sector);
source->SetOrigin (savex, savey, savez);
source->floorz = savefloor;
source->ceilingz = saveceil;
source->dropoffz = savedropoff;
source->floorpic = savefloorpic;
source->floorsector = savefloorsec;
source->ceilingpic = saveceilingpic;
source->ceilingsector = saveceilingsec;
}
if (trace.CrossedWater)
{
AActor *puff = Spawn<ABulletPuff> (0, 0, 0, ALLOW_REPLACE);
if (puff != NULL)
{
SpawnDeepSplash (source, trace, puff, vx, vy, vz);
puff->Destroy ();
}
}
// Now hurt anything the trace hit
unsigned int i;
for (i = 0; i < RailHits.Size (); i++)
{
fixed_t x, y, z;
x = x1 + FixedMul (RailHits[i].Distance, vx);
y = y1 + FixedMul (RailHits[i].Distance, vy);
z = shootz + FixedMul (RailHits[i].Distance, vz);
if ((RailHits[i].HitActor->flags & MF_NOBLOOD) ||
(RailHits[i].HitActor->flags2 & (MF2_DORMANT|MF2_INVULNERABLE)))
{
P_SpawnPuff (RUNTIME_CLASS(ABulletPuff), x, y, z, source->angle - ANG180, 1, true);
}
else
{
P_SpawnBlood (x, y, z, source->angle - ANG180, damage, RailHits[i].HitActor);
}
P_DamageMobj (RailHits[i].HitActor, source, source, damage, MOD_RAILGUN);
P_TraceBleed (damage, x, y, z, RailHits[i].HitActor, angle, pitch);
}
VectorFixedSet (end, trace.X, trace.Y, trace.Z);
P_DrawRailTrail (source, start, end, color1, color2, maxdiff, silent);
}
//
// [RH] P_AimCamera
//
CVAR (Float, chase_height, -8.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Float, chase_dist, 90.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
fixed_t CameraX, CameraY, CameraZ;
sector_t *CameraSector;
void P_AimCamera (AActor *t1)
{
fixed_t distance = (fixed_t)(chase_dist * FRACUNIT);
angle_t angle = (t1->angle - ANG180) >> ANGLETOFINESHIFT;
angle_t pitch = (angle_t)(t1->pitch) >> ANGLETOFINESHIFT;
FTraceResults trace;
fixed_t vx, vy, vz, sz;
vx = FixedMul (finecosine[pitch], finecosine[angle]);
vy = FixedMul (finecosine[pitch], finesine[angle]);
vz = finesine[pitch];
sz = t1->z - t1->floorclip + t1->height + (fixed_t)(chase_height * FRACUNIT);
if (Trace (t1->x, t1->y, sz, t1->Sector,
vx, vy, vz, distance, 0, 0, NULL, trace) &&
trace.Distance > 10*FRACUNIT)
{
// Position camera slightly in front of hit thing
fixed_t dist = trace.Distance - 5*FRACUNIT;
CameraX = t1->x + FixedMul (vx, dist);
CameraY = t1->y + FixedMul (vy, dist);
CameraZ = sz + FixedMul (vz, dist);
}
else
{
CameraX = trace.X;
CameraY = trace.Y;
CameraZ = trace.Z;
}
CameraSector = trace.Sector;
}
//
// USE LINES
//
AActor *usething;
bool foundline;
BOOL PTR_UseTraverse (intercept_t *in)
{
// [RH] Check for things to talk with or use a puzzle item on
if (!in->isaline)
{
if (usething==in->d.thing) return true;
// Check thing
// Check for puzzle item use
if (in->d.thing->special == USE_PUZZLE_ITEM_SPECIAL)
{
if (LineSpecials[USE_PUZZLE_ITEM_SPECIAL] (NULL, usething, false,
in->d.thing->args[0], in->d.thing->args[1], in->d.thing->args[2],
in->d.thing->args[3], in->d.thing->args[4]))
return false;
}
// Dead things can't talk.
if (in->d.thing->health <= 0)
{
return true;
}
// Fighting things don't talk either.
if (in->d.thing->flags4 & MF4_INCOMBAT)
{
return true;
}
if (in->d.thing->Conversation != NULL)
{
// Give the NPC a chance to play a brief animation
in->d.thing->ConversationAnimation (0);
P_StartConversation (in->d.thing, usething, true, true);
return false;
}
return true;
}
// [RH] The range passed to P_PathTraverse was doubled so that it could
// find things up to 128 units away (for Strife), but it should still reject
// lines further than 64 units away.
if (in->frac > FRACUNIT/2)
{
P_LineOpening (in->d.line, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac));
return openrange>0;
}
if (in->d.line->special == 0 || (GET_SPAC(in->d.line->flags) != SPAC_USETHROUGH &&
GET_SPAC(in->d.line->flags) != SPAC_USE))
{
blocked:
if (in->d.line->flags & ML_BLOCKEVERYTHING)
{
openrange = 0;
}
else
{
P_LineOpening (in->d.line, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac));
}
if (openrange <= 0 ||
(in->d.line->special != 0 && (i_compatflags & COMPATF_USEBLOCKING)))
{
// [RH] Give sector a chance to intercept the use
sector_t * sec;
sec = usething->Sector;
if (sec->SecActTarget && sec->SecActTarget->TriggerAction (usething, SECSPAC_Use))
{
return false;
}
sec = P_PointOnLineSide(usething->x, usething->y, in->d.line) == 0?
in->d.line->frontsector : in->d.line->backsector;
if (sec != NULL && sec->SecActTarget &&
sec->SecActTarget->TriggerAction (usething, SECSPAC_UseWall))
{
return false;
}
if (usething->player)
{
S_Sound (usething, CHAN_VOICE, "*usefail", 1, ATTN_IDLE);
}
return false; // can't use through a wall
}
foundline = true;
return true; // not a special line, but keep checking
}
if (P_PointOnLineSide (usething->x, usething->y, in->d.line) == 1)
// [RH] continue traversal for two-sided lines
//return in->d.line->backsector != NULL; // don't use back side
goto blocked; // do a proper check for back sides of triggers
P_ActivateLine (in->d.line, usething, 0, SPAC_USE);
//WAS can't use more than one special line in a row
//jff 3/21/98 NOW multiple use allowed with enabling line flag
//[RH] And now I've changed it again. If the line is of type
// SPAC_USE, then it eats the use. Everything else passes
// it through, including SPAC_USETHROUGH.
if (i_compatflags & COMPATF_USEBLOCKING)
{
return GET_SPAC(in->d.line->flags) == SPAC_USETHROUGH;
}
else
{
return GET_SPAC(in->d.line->flags) != SPAC_USE;
}
}
// Returns false if a "oof" sound should be made because of a blocking
// linedef. Makes 2s middles which are impassable, as well as 2s uppers
// and lowers which block the player, cause the sound effect when the
// player tries to activate them. Specials are excluded, although it is
// assumed that all special linedefs within reach have been considered
// and rejected already (see P_UseLines).
//
// by Lee Killough
//
BOOL PTR_NoWayTraverse (intercept_t *in)
{
line_t *ld = in->d.line;
// [GrafZahl] de-obfuscated. Was I the only one who was unable to makes sense out of
// this convoluted mess?
if (ld->special) return true;
if (ld->flags&(ML_BLOCKING|ML_BLOCKEVERYTHING)) return false;
P_LineOpening(ld, trace.x+FixedMul(trace.dx, in->frac),trace.y+FixedMul(trace.dy, in->frac));
return openrange >0 &&
openbottom <= usething->z + usething->MaxStepHeight &&
opentop >= usething->z + usething->height;
}
/*
================
=
= P_UseLines
=
= Looks for special lines in front of the player to activate
================
*/
void P_UseLines (player_t *player)
{
angle_t angle;
fixed_t x1, y1, x2, y2;
usething = player->mo;
foundline = false;
angle = player->mo->angle >> ANGLETOFINESHIFT;
x1 = player->mo->x;
y1 = player->mo->y;
x2 = x1 + (USERANGE>>FRACBITS)*finecosine[angle]*2;
y2 = y1 + (USERANGE>>FRACBITS)*finesine[angle]*2;
// old code:
//
// P_PathTraverse ( x1, y1, x2, y2, PT_ADDLINES, PTR_UseTraverse );
//
// This added test makes the "oof" sound work on 2s lines -- killough:
if (P_PathTraverse (x1, y1, x2, y2, PT_ADDLINES|PT_ADDTHINGS, PTR_UseTraverse))
{ // [RH] Give sector a chance to eat the use
sector_t *sec = usething->Sector;
int spac = SECSPAC_Use;
if (foundline)
spac |= SECSPAC_UseWall;
if ((!sec->SecActTarget ||
!sec->SecActTarget->TriggerAction (usething, spac)) &&
!P_PathTraverse (x1, y1, x2, y2, PT_ADDLINES, PTR_NoWayTraverse))
{
S_Sound (usething, CHAN_VOICE, "*usefail", 1, ATTN_IDLE);
}
}
}
//==========================================================================
//
// PTR_PuzzleItemTraverse
//
//==========================================================================
static AActor *PuzzleItemUser;
static int PuzzleItemType;
static bool PuzzleActivated;
BOOL PTR_PuzzleItemTraverse (intercept_t *in)
{
AActor *mobj;
if (in->isaline)
{ // Check line
if (in->d.line->special != USE_PUZZLE_ITEM_SPECIAL)
{
P_LineOpening (in->d.line, trace.x + FixedMul (trace.dx, in->frac),
trace.y + FixedMul (trace.dy, in->frac));
if (openrange <= 0)
{
return false; // can't use through a wall
}
return true; // Continue searching
}
if (P_PointOnLineSide (PuzzleItemUser->x, PuzzleItemUser->y,
in->d.line) == 1)
{ // Don't use back sides
return false;
}
if (PuzzleItemType != in->d.line->args[0])
{ // Item type doesn't match
return false;
}
P_StartScript (PuzzleItemUser, in->d.line, in->d.line->args[1], NULL, 0,
in->d.line->args[2], in->d.line->args[3], in->d.line->args[4], true, false);
in->d.line->special = 0;
PuzzleActivated = true;
return false; // Stop searching
}
// Check thing
mobj = in->d.thing;
if (mobj->special != USE_PUZZLE_ITEM_SPECIAL)
{ // Wrong special
return true;
}
if (PuzzleItemType != mobj->args[0])
{ // Item type doesn't match
return true;
}
P_StartScript (PuzzleItemUser, NULL, mobj->args[1], NULL, 0,
mobj->args[2], mobj->args[3], mobj->args[4], true, false);
mobj->special = 0;
PuzzleActivated = true;
return false; // Stop searching
}
//==========================================================================
//
// P_UsePuzzleItem
//
// Returns true if the puzzle item was used on a line or a thing.
//
//==========================================================================
bool P_UsePuzzleItem (AActor *actor, int itemType)
{
int angle;
fixed_t x1, y1, x2, y2;
PuzzleItemType = itemType;
PuzzleItemUser = actor;
PuzzleActivated = false;
angle = actor->angle>>ANGLETOFINESHIFT;
x1 = actor->x;
y1 = actor->y;
x2 = x1+(USERANGE>>FRACBITS)*finecosine[angle];
y2 = y1+(USERANGE>>FRACBITS)*finesine[angle];
P_PathTraverse (x1, y1, x2, y2, PT_ADDLINES|PT_ADDTHINGS,
PTR_PuzzleItemTraverse);
return PuzzleActivated;
}
//
// RADIUS ATTACK
//
AActor* bombsource;
AActor* bombspot;
int bombdamage;
float bombdamagefloat;
int bombdistance;
float bombdistancefloat;
bool DamageSource;
int bombmod;
vec3_t bombvec;
bool bombdodamage;
//=============================================================================
//
// PIT_RadiusAttack
//
// "bombsource" is the creature that caused the explosion at "bombspot".
// [RH] Now it knows about vertical distances and can thrust things vertically.
//=============================================================================
// [RH] Damage scale to apply to thing that shot the missile.
static float selfthrustscale;
CUSTOM_CVAR (Float, splashfactor, 1.f, CVAR_SERVERINFO)
{
if (self <= 0.f)
self = 1.f;
else
selfthrustscale = 1.f / self;
}
BOOL PIT_RadiusAttack (AActor *thing)
{
if (!(thing->flags & MF_SHOOTABLE) )
return true;
// Boss spider and cyborg and Heretic's ep >= 2 bosses
// take no damage from concussion.
if (thing->flags3 & MF3_NORADIUSDMG)
return true;
if (!DamageSource && thing == bombsource)
{ // don't damage the source of the explosion
return true;
}
// a much needed option: monsters that fire explosive projectiles cannot
// be hurt by projectiles fired by a monster of the same type.
// Controlled by the DONTHURTSPECIES flag.
if (bombsource &&
thing->GetClass() == bombsource->GetClass() &&
!thing->player &&
bombsource->flags4 & MF4_DONTHURTSPECIES
) return true;
// Barrels always use the original code, since this makes
// them far too "active." BossBrains also use the old code
// because some user levels require they have a height of 16,
// which can make them near impossible to hit with the new code.
if (!bombdodamage || !((bombspot->flags5 | thing->flags5) & MF5_OLDRADIUSDMG))
{
// [RH] New code. The bounding box only covers the
// height of the thing and not the height of the map.
float points;
float len;
fixed_t dx, dy;
float boxradius;
dx = abs (thing->x - bombspot->x);
dy = abs (thing->y - bombspot->y);
boxradius = float (thing->radius);
// The damage pattern is square, not circular.
len = float (dx > dy ? dx : dy);
if (bombspot->z < thing->z || bombspot->z >= thing->z + thing->height)
{
float dz;
if (bombspot->z > thing->z)
{
dz = float (bombspot->z - thing->z - thing->height);
}
else
{
dz = float (thing->z - bombspot->z);
}
if (len <= boxradius)
{
len = dz;
}
else
{
len -= boxradius;
len = sqrtf (len*len + dz*dz);
}
}
else
{
len -= boxradius;
if (len < 0.f)
len = 0.f;
}
len /= FRACUNIT;
points = bombdamagefloat * (1.f - len * bombdistancefloat);
if (thing == bombsource)
{
points = points * splashfactor;
}
points *= thing->GetClass()->Meta.GetMetaFixed(AMETA_RDFactor, FRACUNIT)/(float)FRACUNIT;
if (points > 0.f && P_CheckSight (thing, bombspot, 1))
{ // OK to damage; target is in direct path
float momz;
float thrust;
int damage = (int)points;
if (bombdodamage) P_DamageMobj (thing, bombspot, bombsource, damage, bombmod);
else thing->flags2 |= MF2_BLASTED;
if (!(thing->flags & MF_ICECORPSE))
{
if (bombdodamage && !(bombspot->flags3 & MF3_BLOODLESSIMPACT)) P_TraceBleed (damage, thing, bombspot);
if (!(bombspot->flags2 & MF2_NODMGTHRUST))
{
thrust = points * 0.5f / (float)thing->Mass;
if (bombsource == thing)
{
thrust *= selfthrustscale;
}
momz = (float)(thing->z + (thing->height>>1) - bombspot->z) * thrust;
if (bombsource != thing)
{
momz *= 0.5f;
}
else
{
momz *= 0.8f;
}
angle_t ang = R_PointToAngle2 (bombspot->x, bombspot->y, thing->x, thing->y) >> ANGLETOFINESHIFT;
thing->momx += fixed_t (finecosine[ang] * thrust);
thing->momy += fixed_t (finesine[ang] * thrust);
thing->momz += (fixed_t)momz;
}
}
}
}
else
{
// [RH] Old code just for barrels
fixed_t dx, dy, dist;
dx = abs (thing->x - bombspot->x);
dy = abs (thing->y - bombspot->y);
dist = dx>dy ? dx : dy;
dist = (dist - thing->radius) >> FRACBITS;
if (dist < 0)
dist = 0;
if (dist >= bombdistance)
return true; // out of range
if (P_CheckSight (thing, bombspot, 1))
{ // OK to damage; target is in direct path
int damage = Scale (bombdamage, bombdistance-dist, bombdistance);
damage = (int)((float)damage * splashfactor);
damage = Scale(damage, thing->GetClass()->Meta.GetMetaFixed(AMETA_RDFactor, FRACUNIT), FRACUNIT);
if (damage > 0)
{
P_DamageMobj (thing, bombspot, bombsource, damage, bombmod);
P_TraceBleed (damage, thing, bombspot);
}
}
}
return true;
}
//
// P_RadiusAttack
// Source is the creature that caused the explosion at spot.
//
void P_RadiusAttack (AActor *spot, AActor *source, int damage, int distance, int damageType,
bool hurtSource, bool dodamage)
{
static TArray<AActor *> radbt;
int x, y;
int xl, xh, yl, yh;
fixed_t dist;
if (distance <= 0)
return;
dist = (distance + MAXRADIUS)<<FRACBITS;
yh = (spot->y + dist - bmaporgy)>>MAPBLOCKSHIFT;
yl = (spot->y - dist - bmaporgy)>>MAPBLOCKSHIFT;
xh = (spot->x + dist - bmaporgx)>>MAPBLOCKSHIFT;
xl = (spot->x - dist - bmaporgx)>>MAPBLOCKSHIFT;
bombspot = spot;
bombsource = source;
bombdamage = damage;
bombdistance = distance;
bombdistancefloat = 1.f / (float)distance;
DamageSource = hurtSource;
bombdamagefloat = (float)damage;
bombmod = damageType;
bombdodamage = dodamage;
VectorPosition (spot, bombvec);
radbt.Clear();
for (y = yl; y <= yh; y++)
for (x = xl; x <= xh; x++)
P_BlockThingsIterator (x, y, PIT_RadiusAttack, radbt);
}
//
// SECTOR HEIGHT CHANGING
// After modifying a sector's floor or ceiling height,
// call this routine to adjust the positions
// of all things that touch the sector.
//
// If anything doesn't fit anymore, true will be returned.
//
// [RH] If crushchange is non-negative, they will take the
// specified amount of damage as they are being crushed.
// If crushchange is negative, you should set the sector
// height back the way it was and call P_ChangeSector()
// again to undo the changes.
// Note that this is very different from the original
// true/false usage of crushchange! If you want regular
// DOOM crushing behavior set crushchange to 10 or -1
// if no crushing is desired.
//
static int moveamt;
int crushchange;
static sector_t *movesec;
bool nofit;
TArray<AActor *> intersectors;
EXTERN_CVAR (Int, cl_bloodtype)
//=============================================================================
//
// P_AdjustFloorCeil
//
//=============================================================================
BOOL P_AdjustFloorCeil (AActor *thing)
{
BOOL isgood = P_CheckPosition (thing, thing->x, thing->y);
thing->floorz = tmfloorz;
thing->ceilingz = tmceilingz;
thing->dropoffz = tmdropoffz; // killough 11/98: remember dropoffs
thing->floorpic = tmfloorpic;
thing->floorsector = tmfloorsector;
thing->ceilingpic = tmceilingpic;
thing->ceilingsector = tmceilingsector;
return isgood;
}
//=============================================================================
//
// PIT_FindAboveIntersectors
//
//=============================================================================
BOOL PIT_FindAboveIntersectors (AActor *thing)
{
if (!(thing->flags & MF_SOLID))
{ // Can't hit thing
return true;
}
if (thing->flags & (MF_CORPSE|MF_SPECIAL))
{ // [RH] Corpses and specials don't block moves
return true;
}
if (thing == tmthing)
{ // Don't clip against self
return true;
}
fixed_t blockdist = thing->radius+tmthing->radius;
if (abs(thing->x-tmx) >= blockdist || abs(thing->y-tmy) >= blockdist)
{ // Didn't hit thing
return true;
}
if (thing->z >= tmthing->z &&
thing->z <= tmthing->z + tmthing->height)
{ // Thing intersects above the base
intersectors.Push (thing);
}
return true;
}
//=============================================================================
//
// PIT_FindBelowIntersectors
//
//=============================================================================
BOOL PIT_FindBelowIntersectors (AActor *thing)
{
if (!(thing->flags & MF_SOLID))
{ // Can't hit thing
return true;
}
if (thing->flags & (MF_CORPSE|MF_SPECIAL))
{ // [RH] Corpses and specials don't block moves
return true;
}
if (thing == tmthing)
{ // Don't clip against self
return true;
}
fixed_t blockdist = thing->radius+tmthing->radius;
if (abs(thing->x-tmx) >= blockdist || abs(thing->y-tmy) >= blockdist)
{ // Didn't hit thing
return true;
}
if (thing->z + thing->height <= tmthing->z + tmthing->height &&
thing->z + thing->height > tmthing->z)
{ // Thing intersects below the base
intersectors.Push (thing);
}
return true;
}
//=============================================================================
//
// P_FindAboveIntersectors
//
//=============================================================================
void P_FindAboveIntersectors (AActor *actor)
{
static TArray<AActor *> abovebt;
int xl,xh,yl,yh,bx,by;
fixed_t x, y;
if (actor->flags & MF_NOCLIP)
return;
if (!(actor->flags & MF_SOLID))
return;
tmx = x = actor->x;
tmy = y = actor->y;
tmthing = actor;
tmbbox[BOXTOP] = y + actor->radius;
tmbbox[BOXBOTTOM] = y - actor->radius;
tmbbox[BOXRIGHT] = x + actor->radius;
tmbbox[BOXLEFT] = x - actor->radius;
//
// the bounding box is extended by MAXRADIUS because actors are grouped
// into mapblocks based on their origin point, and can overlap into adjacent
// blocks by up to MAXRADIUS units
//
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
abovebt.Clear();
for (bx = xl; bx <= xh; bx++)
for (by = yl; by <= yh; by++)
if (!P_BlockThingsIterator (bx, by, PIT_FindAboveIntersectors, abovebt))
return;
return;
}
//=============================================================================
//
// P_FindBelowIntersectors
//
//=============================================================================
void P_FindBelowIntersectors (AActor *actor)
{
static TArray<AActor *> belowbt;
int xl,xh,yl,yh,bx,by;
fixed_t x, y;
if (actor->flags & MF_NOCLIP)
return;
if (!(actor->flags & MF_SOLID))
return;
tmx = x = actor->x;
tmy = y = actor->y;
tmthing = actor;
tmbbox[BOXTOP] = y + actor->radius;
tmbbox[BOXBOTTOM] = y - actor->radius;
tmbbox[BOXRIGHT] = x + actor->radius;
tmbbox[BOXLEFT] = x - actor->radius;
//
// the bounding box is extended by MAXRADIUS because actors are grouped
// into mapblocks based on their origin point, and can overlap into adjacent
// blocks by up to MAXRADIUS units
//
xl = (tmbbox[BOXLEFT] - bmaporgx - MAXRADIUS)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx + MAXRADIUS)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy - MAXRADIUS)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy + MAXRADIUS)>>MAPBLOCKSHIFT;
belowbt.Clear();
for (bx = xl; bx <= xh; bx++)
for (by = yl; by <= yh; by++)
if (!P_BlockThingsIterator (bx, by, PIT_FindBelowIntersectors, belowbt))
return;
return;
}
//=============================================================================
//
// P_DoCrunch
//
//=============================================================================
void P_DoCrunch (AActor *thing)
{
// crunch bodies to giblets
if ((thing->flags & MF_CORPSE) &&
!(thing->flags3 & MF3_DONTGIB) &&
(thing->health <= 0))
{
if (thing->CrushState && !(thing->flags & MF_ICECORPSE))
{
// Clear MF_CORPSE so that this isn't done more than once
thing->flags &= ~(MF_CORPSE|MF_SOLID);
thing->height = thing->radius = 0;
thing->SetState (thing->CrushState);
return;
}
if (!(thing->flags & MF_NOBLOOD))
{
AActor *gib = Spawn<ARealGibs> (thing->x, thing->y, thing->z, ALLOW_REPLACE);
gib->RenderStyle = thing->RenderStyle;
gib->alpha = thing->alpha;
gib->height = 0;
gib->radius = 0;
S_Sound (thing, CHAN_BODY, "misc/fallingsplat", 1, ATTN_IDLE);
PalEntry bloodcolor = (PalEntry)thing->GetClass()->Meta.GetMetaInt(AMETA_BloodColor);
if (bloodcolor!=0) gib->Translation = TRANSLATION(TRANSLATION_Blood, bloodcolor.a);
}
if (thing->flags & MF_ICECORPSE)
{
thing->tics = 1;
thing->momx = thing->momy = thing->momz = 0;
}
else if (thing->player)
{
thing->flags |= MF_NOCLIP;
thing->flags3 |= MF3_DONTGIB;
thing->renderflags |= RF_INVISIBLE;
}
else
{
thing->Destroy ();
}
return; // keep checking
}
// crunch dropped items
if (thing->flags & MF_DROPPED)
{
thing->Destroy ();
return; // keep checking
}
if (!(thing->flags & MF_SOLID) || (thing->flags & MF_NOCLIP))
{
return;
}
if (!(thing->flags & MF_SHOOTABLE))
{
return; // assume it is bloody gibs or something
}
nofit = true;
if ((crushchange > 0) && !(level.maptime & 3))
{
P_DamageMobj (thing, NULL, NULL, crushchange, MOD_CRUSH);
// spray blood in a random direction
if ((!(thing->flags&MF_NOBLOOD)) &&
(!(thing->flags2&(MF2_INVULNERABLE|MF2_DORMANT))))
{
PalEntry bloodcolor = (PalEntry)thing->GetClass()->Meta.GetMetaInt(AMETA_BloodColor);
P_TraceBleed (crushchange, thing);
if (cl_bloodtype <= 1)
{
AActor *mo;
mo = Spawn<ABlood> (thing->x, thing->y,
thing->z + thing->height/2, ALLOW_REPLACE);
mo->momx = pr_crunch.Random2 () << 12;
mo->momy = pr_crunch.Random2 () << 12;
if (bloodcolor!=0) mo->Translation = TRANSLATION(TRANSLATION_Blood, bloodcolor.a);
}
if (cl_bloodtype >= 1)
{
angle_t an;
an = (M_Random () - 128) << 24;
P_DrawSplash2 (32, thing->x, thing->y,
thing->z + thing->height/2, an, 2, bloodcolor);
}
}
}
// keep checking (crush other things)
return;
}
//=============================================================================
//
// P_PushUp
//
// Returns 0 if thing fits, 1 if ceiling got in the way, or 2 if something
// above it didn't fit.
//=============================================================================
int P_PushUp (AActor *thing)
{
unsigned int firstintersect = intersectors.Size ();
unsigned int lastintersect;
int mymass = thing->Mass;
if (thing->z + thing->height > thing->ceilingz)
{
return 1;
}
P_FindAboveIntersectors (thing);
lastintersect = intersectors.Size ();
for (; firstintersect < lastintersect; firstintersect++)
{
AActor *intersect = intersectors[firstintersect];
if (!(intersect->flags2 & MF2_PASSMOBJ) ||
(!(intersect->flags3 & MF3_ISMONSTER) &&
intersect->Mass > mymass))
{ // Can't push things more massive than ourself
return 2;
}
fixed_t oldz = intersect->z;
P_AdjustFloorCeil (intersect);
intersect->z = thing->z + thing->height + 1;
if (P_PushUp (intersect))
{ // Move blocked
P_DoCrunch (intersect);
intersect->z = oldz;
return 2;
}
}
return 0;
}
//=============================================================================
//
// P_PushDown
//
// Returns 0 if thing fits, 1 if floor got in the way, or 2 if something
// below it didn't fit.
//=============================================================================
int P_PushDown (AActor *thing)
{
unsigned int firstintersect = intersectors.Size ();
unsigned int lastintersect;
int mymass = thing->Mass;
if (thing->z <= thing->floorz)
{
return 1;
}
P_FindBelowIntersectors (thing);
lastintersect = intersectors.Size ();
for (; firstintersect < lastintersect; firstintersect++)
{
AActor *intersect = intersectors[firstintersect];
if (!(intersect->flags2 & MF2_PASSMOBJ) ||
(!(intersect->flags3 & MF3_ISMONSTER) &&
intersect->Mass > mymass))
{ // Can't push things more massive than ourself
return 2;
}
fixed_t oldz = intersect->z;
P_AdjustFloorCeil (intersect);
if (oldz > thing->z - intersect->height)
{ // Only push things down, not up.
intersect->z = thing->z - intersect->height;
if (P_PushDown (intersect))
{ // Move blocked
P_DoCrunch (intersect);
intersect->z = oldz;
return 2;
}
}
}
return 0;
}
//=============================================================================
//
// PIT_FloorDrop
//
//=============================================================================
void PIT_FloorDrop (AActor *thing)
{
fixed_t oldfloorz = thing->floorz;
P_AdjustFloorCeil (thing);
if (thing->momz == 0 &&
(!(thing->flags & MF_NOGRAVITY) ||
(thing->z == oldfloorz && !(thing->flags & MF_NOLIFTDROP))))
{
fixed_t oldz = thing->z;
// If float bob, always stay the same approximate distance above
// the floor; otherwise only move things standing on the floor,
// and only do it if the drop is slow enough.
if (thing->flags2 & MF2_FLOATBOB)
{
thing->z = thing->z - oldfloorz + thing->floorz;
P_CheckFakeFloorTriggers (thing, oldz);
}
else if ((thing->flags & MF_NOGRAVITY) ||
((!(level.flags & LEVEL_HEXENFORMAT) || moveamt < 9*FRACUNIT)
&& thing->z - thing->floorz <= moveamt))
{
thing->z = thing->floorz;
P_CheckFakeFloorTriggers (thing, oldz);
}
}
}
//=============================================================================
//
// PIT_FloorRaise
//
//=============================================================================
void PIT_FloorRaise (AActor *thing)
{
fixed_t oldfloorz = thing->floorz;
P_AdjustFloorCeil (thing);
// Move things intersecting the floor up
if (thing->z <= thing->floorz ||
(!(thing->flags & MF_NOGRAVITY) && (thing->flags2 & MF2_FLOATBOB)))
{
intersectors.Clear ();
fixed_t oldz = thing->z;
if (!(thing->flags2 & MF2_FLOATBOB))
{
thing->z = thing->floorz;
}
else
{
thing->z = thing->z - oldfloorz + thing->floorz;
}
switch (P_PushUp (thing))
{
default:
P_CheckFakeFloorTriggers (thing, oldz);
break;
case 1:
P_DoCrunch (thing);
P_CheckFakeFloorTriggers (thing, oldz);
break;
case 2:
P_DoCrunch (thing);
thing->z = oldz;
break;
}
}
}
//=============================================================================
//
// PIT_CeilingLower
//
//=============================================================================
void PIT_CeilingLower (AActor *thing)
{
bool onfloor;
onfloor = thing->z <= thing->floorz;
P_AdjustFloorCeil (thing);
if (thing->z + thing->height > thing->ceilingz)
{
intersectors.Clear ();
fixed_t oldz = thing->z;
if (thing->ceilingz - thing->height >= thing->floorz)
{
thing->z = thing->ceilingz - thing->height;
}
else
{
thing->z = thing->floorz;
}
switch (P_PushDown (thing))
{
case 2:
// intentional fall-through
case 1:
if (onfloor)
thing->z = thing->floorz;
P_DoCrunch (thing);
P_CheckFakeFloorTriggers (thing, oldz);
break;
default:
P_CheckFakeFloorTriggers (thing, oldz);
break;
}
}
}
//=============================================================================
//
// PIT_CeilingRaise
//
//=============================================================================
void PIT_CeilingRaise (AActor *thing)
{
BOOL isgood = P_AdjustFloorCeil (thing);
// For DOOM compatibility, only move things that are inside the floor.
// (or something else?) Things marked as hanging from the ceiling will
// stay where they are.
if (thing->z < thing->floorz &&
thing->z + thing->height >= thing->ceilingz - moveamt &&
!(thing->flags & MF_NOLIFTDROP))
{
fixed_t oldz = thing->z;
thing->z = thing->floorz;
if (thing->z + thing->height > thing->ceilingz)
{
thing->z = thing->ceilingz - thing->height;
}
P_CheckFakeFloorTriggers (thing, oldz);
}
else if ((thing->flags & MF2_PASSMOBJ) && !isgood && thing->z + thing->height < thing->ceilingz)
{
if (!P_TestMobjZ (thing) && onmobj->z <= thing->z)
{
thing->z = MIN (thing->ceilingz - thing->height,
onmobj->z + onmobj->height);
}
}
}
//=============================================================================
//
// P_ChangeSector [RH] Was P_CheckSector in BOOM
//
// jff 3/19/98 added to just check monsters on the periphery
// of a moving sector instead of all in bounding box of the
// sector. Both more accurate and faster.
//
//=============================================================================
bool P_ChangeSector (sector_t *sector, int crunch, int amt, int floorOrCeil)
{
void (*iterator)(AActor *);
msecnode_t *n;
nofit = false;
crushchange = crunch;
moveamt = abs (amt);
movesec = sector;
// [RH] Use different functions for the four different types of sector
// movement. Also update the soundorg's z-coordinate for 3D sound.
if (floorOrCeil == 0)
{ // floor
iterator = (amt < 0) ? PIT_FloorDrop : PIT_FloorRaise;
sector->soundorg[2] = sector->floorplane.ZatPoint (sector->soundorg[0], sector->soundorg[1]);
}
else
{ // ceiling
iterator = (amt < 0) ? PIT_CeilingLower : PIT_CeilingRaise;
sector->soundorg[2] = sector->ceilingplane.ZatPoint (sector->soundorg[0], sector->soundorg[1]);
}
// killough 4/4/98: scan list front-to-back until empty or exhausted,
// restarting from beginning after each thing is processed. Avoids
// crashes, and is sure to examine all things in the sector, and only
// the things which are in the sector, until a steady-state is reached.
// Things can arbitrarily be inserted and removed and it won't mess up.
//
// killough 4/7/98: simplified to avoid using complicated counter
// Mark all things invalid
for (n = sector->touching_thinglist; n; n = n->m_snext)
n->visited = false;
do
{
for (n = sector->touching_thinglist; n; n = n->m_snext) // go through list
{
if (!n->visited) // unprocessed thing found
{
n->visited = true; // mark thing as processed
if (!(n->m_thing->flags & MF_NOBLOCKMAP)) //jff 4/7/98 don't do these
iterator (n->m_thing); // process it
break; // exit and start over
}
}
} while (n); // repeat from scratch until all things left are marked valid
return nofit;
}
//=============================================================================
// phares 3/21/98
//
// Maintain a freelist of msecnode_t's to reduce memory allocs and frees.
//=============================================================================
msecnode_t *headsecnode = NULL;
//=============================================================================
//
// P_GetSecnode
//
// Retrieve a node from the freelist. The calling routine
// should make sure it sets all fields properly.
//
//=============================================================================
msecnode_t *P_GetSecnode()
{
msecnode_t *node;
if (headsecnode)
{
node = headsecnode;
headsecnode = headsecnode->m_snext;
}
else
{
node = (msecnode_t *)M_Malloc (sizeof(*node));
}
return node;
}
//=============================================================================
//
// P_PutSecnode
//
// Returns a node to the freelist.
//
//=============================================================================
void P_PutSecnode (msecnode_t *node)
{
node->m_snext = headsecnode;
headsecnode = node;
}
//=============================================================================
// phares 3/16/98
//
// P_AddSecnode
//
// Searches the current list to see if this sector is
// already there. If not, it adds a sector node at the head of the list of
// sectors this object appears in. This is called when creating a list of
// nodes that will get linked in later. Returns a pointer to the new node.
//
//=============================================================================
msecnode_t *P_AddSecnode (sector_t *s, AActor *thing, msecnode_t *nextnode)
{
msecnode_t *node;
if (s == 0)
{
I_FatalError ("AddSecnode of 0 for %s\n", thing->_StaticType.TypeName.GetChars());
}
node = nextnode;
while (node)
{
if (node->m_sector == s) // Already have a node for this sector?
{
node->m_thing = thing; // Yes. Setting m_thing says 'keep it'.
return nextnode;
}
node = node->m_tnext;
}
// Couldn't find an existing node for this sector. Add one at the head
// of the list.
node = P_GetSecnode();
// killough 4/4/98, 4/7/98: mark new nodes unvisited.
node->visited = 0;
node->m_sector = s; // sector
node->m_thing = thing; // mobj
node->m_tprev = NULL; // prev node on Thing thread
node->m_tnext = nextnode; // next node on Thing thread
if (nextnode)
nextnode->m_tprev = node; // set back link on Thing
// Add new node at head of sector thread starting at s->touching_thinglist
node->m_sprev = NULL; // prev node on sector thread
node->m_snext = s->touching_thinglist; // next node on sector thread
if (s->touching_thinglist)
node->m_snext->m_sprev = node;
s->touching_thinglist = node;
return node;
}
//=============================================================================
//
// P_DelSecnode
//
// Deletes a sector node from the list of
// sectors this object appears in. Returns a pointer to the next node
// on the linked list, or NULL.
//
//=============================================================================
msecnode_t *P_DelSecnode (msecnode_t *node)
{
msecnode_t* tp; // prev node on thing thread
msecnode_t* tn; // next node on thing thread
msecnode_t* sp; // prev node on sector thread
msecnode_t* sn; // next node on sector thread
if (node)
{
// Unlink from the Thing thread. The Thing thread begins at
// sector_list and not from AActor->touching_sectorlist.
tp = node->m_tprev;
tn = node->m_tnext;
if (tp)
tp->m_tnext = tn;
if (tn)
tn->m_tprev = tp;
// Unlink from the sector thread. This thread begins at
// sector_t->touching_thinglist.
sp = node->m_sprev;
sn = node->m_snext;
if (sp)
sp->m_snext = sn;
else
node->m_sector->touching_thinglist = sn;
if (sn)
sn->m_sprev = sp;
// Return this node to the freelist
P_PutSecnode(node);
return tn;
}
return NULL;
} // phares 3/13/98
//=============================================================================
//
// P_DelSector_List
//
// Deletes the sector_list and NULLs it.
//
//=============================================================================
void P_DelSector_List ()
{
if (sector_list != NULL)
{
P_DelSeclist (sector_list);
sector_list = NULL;
}
}
//=============================================================================
//
// P_DelSeclist
//
// Delete an entire sector list
//
//=============================================================================
void P_DelSeclist (msecnode_t *node)
{
while (node)
node = P_DelSecnode (node);
}
//=============================================================================
// phares 3/14/98
//
// PIT_GetSectors
//
// Locates all the sectors the object is in by looking at the lines that
// cross through it. You have already decided that the object is allowed
// at this location, so don't bother with checking impassable or
// blocking lines.
//=============================================================================
BOOL PIT_GetSectors (line_t *ld)
{
if (tmbbox[BOXRIGHT] <= ld->bbox[BOXLEFT] ||
tmbbox[BOXLEFT] >= ld->bbox[BOXRIGHT] ||
tmbbox[BOXTOP] <= ld->bbox[BOXBOTTOM] ||
tmbbox[BOXBOTTOM] >= ld->bbox[BOXTOP])
return true;
if (P_BoxOnLineSide (tmbbox, ld) != -1)
return true;
// This line crosses through the object.
// Collect the sector(s) from the line and add to the
// sector_list you're examining. If the Thing ends up being
// allowed to move to this position, then the sector_list
// will be attached to the Thing's AActor at touching_sectorlist.
sector_list = P_AddSecnode (ld->frontsector,tmthing,sector_list);
// Don't assume all lines are 2-sided, since some Things
// like MT_TFOG are allowed regardless of whether their radius takes
// them beyond an impassable linedef.
// killough 3/27/98, 4/4/98:
// Use sidedefs instead of 2s flag to determine two-sidedness.
if (ld->backsector)
sector_list = P_AddSecnode(ld->backsector, tmthing, sector_list);
return true;
}
//=============================================================================
// phares 3/14/98
//
// P_CreateSecNodeList
//
// Alters/creates the sector_list that shows what sectors the object resides in
//
//=============================================================================
void P_CreateSecNodeList (AActor *thing, fixed_t x, fixed_t y)
{
int xl, xh, yl, yh, bx, by;
msecnode_t *node;
// [RH] Save old tm* values.
AActor *thingsave = tmthing;
int flagssave = tmflags;
fixed_t xsave = tmx;
fixed_t ysave = tmy;
fixed_t bboxsave[4];
memcpy (bboxsave, tmbbox, sizeof(bboxsave));
// First, clear out the existing m_thing fields. As each node is
// added or verified as needed, m_thing will be set properly. When
// finished, delete all nodes where m_thing is still NULL. These
// represent the sectors the Thing has vacated.
node = sector_list;
while (node)
{
node->m_thing = NULL;
node = node->m_tnext;
}
tmthing = thing;
tmflags = thing->flags;
tmx = x;
tmy = y;
tmbbox[BOXTOP] = y + tmthing->radius;
tmbbox[BOXBOTTOM] = y - tmthing->radius;
tmbbox[BOXRIGHT] = x + tmthing->radius;
tmbbox[BOXLEFT] = x - tmthing->radius;
validcount++; // used to make sure we only process a line once
xl = (tmbbox[BOXLEFT] - bmaporgx)>>MAPBLOCKSHIFT;
xh = (tmbbox[BOXRIGHT] - bmaporgx)>>MAPBLOCKSHIFT;
yl = (tmbbox[BOXBOTTOM] - bmaporgy)>>MAPBLOCKSHIFT;
yh = (tmbbox[BOXTOP] - bmaporgy)>>MAPBLOCKSHIFT;
for (bx = xl; bx <= xh; bx++)
for (by = yl; by <= yh; by++)
P_BlockLinesIterator (bx,by,PIT_GetSectors);
// Add the sector of the (x,y) point to sector_list.
sector_list = P_AddSecnode (thing->Sector, thing, sector_list);
// Now delete any nodes that won't be used. These are the ones where
// m_thing is still NULL.
node = sector_list;
while (node)
{
if (node->m_thing == NULL)
{
if (node == sector_list)
sector_list = node->m_tnext;
node = P_DelSecnode (node);
}
else
{
node = node->m_tnext;
}
}
// [RH] Restore old tm* values.
tmthing = thingsave;
tmflags = flagssave;
tmx = xsave;
tmy = ysave;
memcpy (tmbbox, bboxsave, sizeof(bboxsave));
}
void SpawnShootDecal (AActor *t1, const FTraceResults &trace)
{
FDecalBase *decalbase = NULL;
if (t1->player != NULL && t1->player->ReadyWeapon != NULL)
{
decalbase = t1->player->ReadyWeapon->GetDefault()->DecalGenerator;
}
else
{
decalbase = t1->DecalGenerator;
}
if (decalbase != NULL)
{
DImpactDecal::StaticCreate (decalbase->GetDecal (),
trace.X, trace.Y, trace.Z, sides + trace.Line->sidenum[trace.Side]);
}
}
static void SpawnDeepSplash (AActor *t1, const FTraceResults &trace, AActor *puff,
fixed_t vx, fixed_t vy, fixed_t vz)
{
fixed_t num, den, hitdist;
const secplane_t *plane = &trace.CrossedWater->heightsec->floorplane;
den = TMulScale16 (plane->a, vx, plane->b, vy, plane->c, vz);
if (den != 0)
{
num = TMulScale16 (plane->a, t1->x, plane->b, t1->y, plane->c, shootz) + plane->d;
hitdist = FixedDiv (-num, den);
if (hitdist >= 0 && hitdist <= trace.Distance)
{
fixed_t savex, savey, savez;
// Move the puff onto the water surface, splash, then move it back.
if (puff == NULL)
{
puff = t1;
}
savex = puff->x;
savey = puff->y;
savez = puff->z;
puff->SetOrigin (t1->x+FixedMul (vx, hitdist),
t1->y+FixedMul (vy, hitdist),
shootz+FixedMul (vz, hitdist));
P_HitWater (puff, puff->Sector);
puff->SetOrigin (savex, savey, savez);
}
}
}
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