//===========================================================================
// PIT_CheckLine
// Adjusts tmfloorz and tmceilingz as lines are contacted.
//===========================================================================
static boolean PIT_CheckLine(line_t *ld, void *parm)
{
checkpos_data_t *tm = parm;
fixed_t bbox[4];
// Setup the bounding box for the line.
ORDER(ld->v1->x, ld->v2->x, bbox[BOXLEFT], bbox[BOXRIGHT]);
ORDER(ld->v1->y, ld->v2->y, bbox[BOXBOTTOM], bbox[BOXTOP]);
if(tm->box[BOXRIGHT] <= bbox[BOXLEFT] || tm->box[BOXLEFT] >= bbox[BOXRIGHT]
|| tm->box[BOXTOP] <= bbox[BOXBOTTOM] ||
tm->box[BOXBOTTOM] >= bbox[BOXTOP])
return true;
if(P_BoxOnLineSide(tm->box, ld) != -1)
return true;
// A line has been hit.
tm->thing->wallhit = true;
if(!ld->backsector)
return false; // One sided line, can't go through.
if(!(tm->thing->ddflags & DDMF_MISSILE))
{
if(ld->flags & ML_BLOCKING)
return false; // explicitly blocking everything
}
// set openrange, opentop, openbottom.
P_LineOpening(ld);
// adjust floor / ceiling heights.
if(opentop < tm->ceilingz)
tm->ceilingz = opentop;
if(openbottom > tm->floorz)
tm->floorz = openbottom;
if(lowfloor < tm->dropoffz)
tm->dropoffz = lowfloor;
tm->thing->wallhit = false;
return true;
}
boolean PIT_CheckLine(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);
}
// 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->flags & MF_MISSILE)
{ // Missiles can trigger impact specials
if (ld->special)
{
spechit[numspechit] = ld;
numspechit++;
}
}
return false;
}
if (!(tmthing->flags & MF_MISSILE))
{
if (ld->flags & ML_BLOCKING)
{ // Explicitly blocking everything
return (false);
}
if (!tmthing->player && ld->flags & ML_BLOCKMONSTERS
&& tmthing->type != MT_POD)
{ // Block monsters only
return (false);
}
}
P_LineOpening(ld); // set openrange, opentop, openbottom
// adjust floor / ceiling heights
if (opentop < tmceilingz)
{
tmceilingz = opentop;
ceilingline = ld;
}
if (openbottom > tmfloorz)
{
tmfloorz = openbottom;
}
if (lowfloor < tmdropoffz)
{
tmdropoffz = lowfloor;
}
if (ld->special)
{ // Contacted a special line, add it to the list
spechit[numspechit] = ld;
numspechit++;
}
return (true);
}
//
// PIT_CheckLine
// Adjusts tmfloorz and tmceilingz as lines are contacted
//
boolean PIT_CheckLine (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;
// 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)
{
blockline = ld;
return false; // one sided line
}
if (!(tmthing->flags & MF_MISSILE) )
{
if ( ld->flags & ML_BLOCKING )
return false; // explicitly blocking everything
// killough 8/9/98: monster-blockers don't affect friends
if (!(tmthing->flags & MF_FRIEND || tmthing->player)
&& ld->flags & ML_BLOCKMONSTERS)
return false; // block monsters only
}
// set openrange, opentop, openbottom
P_LineOpening (ld);
// adjust floor / ceiling heights
if (opentop < tmceilingz)
{
tmceilingz = opentop;
ceilingline = ld;
blockline = ld;
}
if (openbottom > tmfloorz)
{
tmfloorz = openbottom;
blockline = ld;
}
if (lowfloor < tmdropoffz)
tmdropoffz = lowfloor;
// if contacted a special line, add it to the list
if (ld->special)
{
// 1/11/98 killough: remove limit on lines hit
if (numspechit >= spechit_max)
{
spechit_max += 32;
spechit = (line_t **)realloc(spechit, sizeof(*spechit) * spechit_max);
if (spechit == NULL)
I_Error ("PIT_CheckLine: No RAM");
}
spechit[numspechit++] = ld;
}
return true;
}
