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Add P_GetMidtextureTopBottom

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This commit is contained in:
James R 2022-08-01 07:16:53 -07:00
parent 308a4ba345
commit f52afc0491
2 changed files with 82 additions and 37 deletions
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115
src/p_maputl.c
View file

@ -485,6 +485,83 @@ void P_CameraLineOpening(line_t *linedef)
}
}
boolean
P_GetMidtextureTopBottom
( line_t * linedef,
fixed_t x,
fixed_t y,
fixed_t * return_top,
fixed_t * return_bottom)
{
side_t *side = &sides[linedef->sidenum[0]];
fixed_t textop, texbottom, texheight;
INT32 texnum = R_GetTextureNum(side->midtexture); // make sure the texture is actually valid
sector_t *front = linedef->frontsector;
sector_t *back = linedef->backsector;
fixed_t z;
if (!texnum)
return false;
textop = P_GetSectorCeilingZAt(front, x, y);
texbottom = P_GetSectorFloorZAt(front, x, y);
if (back)
{
z = P_GetSectorCeilingZAt(back, x, y);
if (z < textop)
textop = z;
z = P_GetSectorFloorZAt(back, x, y);
if (z > texbottom)
texbottom = z;
}
// Get the midtexture's height
texheight = textures[texnum]->height << FRACBITS;
// Set texbottom and textop to the Z coordinates of the texture's boundaries
#if 0
// don't remove this code unless solid midtextures
// on non-solid polyobjects should NEVER happen in the future
if (linedef->polyobj && (linedef->polyobj->flags & POF_TESTHEIGHT)) {
if (linedef->flags & ML_EFFECT5 && !side->repeatcnt) { // "infinite" repeat
texbottom = back->floorheight + side->rowoffset;
textop = back->ceilingheight + side->rowoffset;
} else if (!!(linedef->flags & ML_DONTPEGBOTTOM) ^ !!(linedef->flags & ML_EFFECT3)) {
texbottom = back->floorheight + side->rowoffset;
textop = texbottom + texheight*(side->repeatcnt+1);
} else {
textop = back->ceilingheight + side->rowoffset;
texbottom = textop - texheight*(side->repeatcnt+1);
}
} else
#endif
{
if (linedef->flags & ML_EFFECT5 && !side->repeatcnt) { // "infinite" repeat
texbottom += side->rowoffset;
textop += side->rowoffset;
} else if (!!(linedef->flags & ML_DONTPEGBOTTOM) ^ !!(linedef->flags & ML_EFFECT3)) {
texbottom += side->rowoffset;
textop = texbottom + texheight*(side->repeatcnt+1);
} else {
textop += side->rowoffset;
texbottom = textop - texheight*(side->repeatcnt+1);
}
}
if (return_top)
*return_top = textop;
if (return_bottom)
*return_bottom = texbottom;
return true;
}
void P_LineOpening(line_t *linedef, mobj_t *mobj)
{
enum { FRONT, BACK };
@ -596,45 +673,11 @@ void P_LineOpening(line_t *linedef, mobj_t *mobj)
if ((linedef->flags & ML_EFFECT4 || (mobj->player && P_IsLineTripWire(linedef) && !K_TripwirePass(mobj->player)))
&& !linedef->polyobj // don't do anything for polyobjects! ...for now
) {
side_t *side = &sides[linedef->sidenum[0]];
fixed_t textop, texbottom, texheight;
fixed_t textop, texbottom;
fixed_t texmid, delta1, delta2;
INT32 texnum = R_GetTextureNum(side->midtexture); // make sure the texture is actually valid
if (texnum) {
// Get the midtexture's height
texheight = textures[texnum]->height << FRACBITS;
// Set texbottom and textop to the Z coordinates of the texture's boundaries
#if 0
// don't remove this code unless solid midtextures
// on non-solid polyobjects should NEVER happen in the future
if (linedef->polyobj && (linedef->polyobj->flags & POF_TESTHEIGHT)) {
if (linedef->flags & ML_EFFECT5 && !side->repeatcnt) { // "infinite" repeat
texbottom = back->floorheight + side->rowoffset;
textop = back->ceilingheight + side->rowoffset;
} else if (!!(linedef->flags & ML_DONTPEGBOTTOM) ^ !!(linedef->flags & ML_EFFECT3)) {
texbottom = back->floorheight + side->rowoffset;
textop = texbottom + texheight*(side->repeatcnt+1);
} else {
textop = back->ceilingheight + side->rowoffset;
texbottom = textop - texheight*(side->repeatcnt+1);
}
} else
#endif
if (P_GetMidtextureTopBottom(linedef, cross.x, cross.y, &textop, &texbottom))
{
if (linedef->flags & ML_EFFECT5 && !side->repeatcnt) { // "infinite" repeat
texbottom = openbottom + side->rowoffset;
textop = opentop + side->rowoffset;
} else if (!!(linedef->flags & ML_DONTPEGBOTTOM) ^ !!(linedef->flags & ML_EFFECT3)) {
texbottom = openbottom + side->rowoffset;
textop = texbottom + texheight*(side->repeatcnt+1);
} else {
textop = opentop + side->rowoffset;
texbottom = textop - texheight*(side->repeatcnt+1);
}
}
texmid = texbottom+(textop-texbottom)/2;
delta1 = abs(mobj->z - texmid);

2
src/p_maputl.h
View file

@ -56,6 +56,8 @@ void P_CreatePrecipSecNodeList(precipmobj_t *thing, fixed_t x,fixed_t y);
boolean P_SceneryTryMove(mobj_t *thing, fixed_t x, fixed_t y);
void P_HitSpecialLines(mobj_t *thing, fixed_t x, fixed_t y, fixed_t momx, fixed_t momy);
boolean P_GetMidtextureTopBottom(line_t *linedef, fixed_t x, fixed_t y, fixed_t *return_top, fixed_t *return_bottom);
extern fixed_t opentop, openbottom, openrange, lowfloor, highceiling;
extern pslope_t *opentopslope, *openbottomslope;
extern ffloor_t *openfloorrover, *openceilingrover;