// killough 1/28/98: static // CPhipps - const parameter, reformatted
static boolean R_CheckBBox(const fixed_t *bspcoord)
{
angle_t angle1, angle2;
{
int boxpos;
const int* check;
// Find the corners of the box
// that define the edges from current viewpoint.
boxpos = (viewx <= bspcoord[BOXLEFT] ? 0 : viewx < bspcoord[BOXRIGHT ] ? 1 : 2) +
(viewy >= bspcoord[BOXTOP ] ? 0 : viewy > bspcoord[BOXBOTTOM] ? 4 : 8);
if (boxpos == 5)
return true;
check = checkcoord[boxpos];
angle1 = R_PointToAngle (bspcoord[check[0]], bspcoord[check[1]]) - viewangle;
angle2 = R_PointToAngle (bspcoord[check[2]], bspcoord[check[3]]) - viewangle;
}
// cph - replaced old code, which was unclear and badly commented
// Much more efficient code now
if ((signed)angle1 < (signed)angle2) { /* it's "behind" us */
/* Either angle1 or angle2 is behind us, so it doesn't matter if we
* change it to the corect sign
*/
if ((angle1 >= ANG180) && (angle1 < ANG270))
angle1 = INT_MAX; /* which is ANG180-1 */
else
angle2 = INT_MIN;
}
if ((signed)angle2 >= (signed)clipangle) return false; // Both off left edge
if ((signed)angle1 <= -(signed)clipangle) return false; // Both off right edge
if ((signed)angle1 >= (signed)clipangle) angle1 = clipangle; // Clip at left edge
if ((signed)angle2 <= -(signed)clipangle) angle2 = -clipangle; // Clip at right edge
// Find the first clippost
// that touches the source post
// (adjacent pixels are touching).
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
{
int sx1 = viewangletox[angle1];
int sx2 = viewangletox[angle2];
// const cliprange_t *start;
// Does not cross a pixel.
if (sx1 == sx2)
return false;
if (!memchr(solidcol+sx1, 0, sx2-sx1)) return false;
// All columns it covers are already solidly covered
}
return true;
}
static boolean R_CheckBBox(const fixed_t *bspcoord)
{
angle_t angle1, angle2;
int boxpos;
const int *check;
boxpos = (viewx <= bspcoord[BOXLEFT] ? 0 : viewx < bspcoord[BOXRIGHT ] ? 1 : 2) + (viewy >= bspcoord[BOXTOP ] ? 0 : viewy > bspcoord[BOXBOTTOM] ? 4 : 8);
if (boxpos == 5)
return true;
check = checkcoord[boxpos];
angle1 = R_PointToAngle (bspcoord[check[0]], bspcoord[check[1]]) - viewangle;
angle2 = R_PointToAngle (bspcoord[check[2]], bspcoord[check[3]]) - viewangle;
if ((signed)angle1 < (signed)angle2)
{
if ((angle1 >= ANG180) && (angle1 < ANG270))
angle1 = INT_MAX;
else
angle2 = INT_MIN;
}
if ((signed)angle2 >= (signed)clipangle)
return false;
if ((signed)angle1 <= -(signed)clipangle)
return false;
if ((signed)angle1 >= (signed)clipangle)
angle1 = clipangle;
if ((signed)angle2 <= -(signed)clipangle)
angle2 = 0 - clipangle;
angle1 = (angle1 + ANG90) >> ANGLETOFINESHIFT;
angle2 = (angle2 + ANG90) >> ANGLETOFINESHIFT;
{
int sx1 = viewangletox[angle1];
int sx2 = viewangletox[angle2];
if (sx1 == sx2)
return false;
if (!memchr(solidcol + sx1, 0, sx2 - sx1))
return false;
}
return true;
}
angle_t R_PointToAngle2(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2)
{
viewx = x1;
viewy = y1;
return R_PointToAngle(x2, y2);
}
// [BB] Small helper function for MDL_ROLLAGAINSTANGLE.
float gl_RollAgainstAngleHelper ( const AActor *actor )
{
float angleDiff = ANGLE_TO_FLOAT ( R_PointToAngle ( actor->x, actor->y ) ) - ANGLE_TO_FLOAT ( actor->angle );
if ( angleDiff > 180 )
angleDiff -= 360;
else if ( angleDiff < -180 )
angleDiff += 360;
if ( actor->z > viewz )
angleDiff *= -1;
if ( ( angleDiff < 90 ) && ( angleDiff > - 90 ) )
angleDiff *= -1;
return angleDiff;
}
bool Clipper::CheckBox(const fixed_t *bspcoord)
{
static const int checkcoord[12][4] = // killough -- static const
{
{3,0,2,1},
{3,0,2,0},
{3,1,2,0},
{0},
{2,0,2,1},
{0,0,0,0},
{3,1,3,0},
{0},
{2,0,3,1},
{2,1,3,1},
{2,1,3,0}
};
angle_t angle1, angle2;
int boxpos;
const int* check;
// Find the corners of the box
// that define the edges from current viewpoint.
boxpos = (viewx <= bspcoord[BOXLEFT] ? 0 : viewx < bspcoord[BOXRIGHT ] ? 1 : 2) +
(viewy >= bspcoord[BOXTOP ] ? 0 : viewy > bspcoord[BOXBOTTOM] ? 4 : 8);
if (boxpos == 5) return true;
check = checkcoord[boxpos];
angle1 = R_PointToAngle (bspcoord[check[0]], bspcoord[check[1]]);
angle2 = R_PointToAngle (bspcoord[check[2]], bspcoord[check[3]]);
return SafeCheckRange(angle2, angle1);
}
void P_BloodSplatter2 (fixed_t x, fixed_t y, fixed_t z, AActor *originator)
{
if (cl_bloodtype <= 1)
{
AActor *mo;
x += ((pr_splat()-128)<<11);
y += ((pr_splat()-128)<<11);
mo = Spawn<AAxeBlood> (x, y, z);
mo->target = originator;
}
if (cl_bloodtype >= 1)
{
P_DrawSplash2 (100, x, y, z, R_PointToAngle (originator->x - x, originator->y - y), 2, 0);
}
}
static void R_AddLine (seg_t *line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
static sector_t tempsec; // killough 3/8/98: ceiling/water hack
// boolean solid = true;
curline = line;
angle1 = R_PointToAngle (line->v1->x, line->v1->y);
angle2 = R_PointToAngle (line->v2->x, line->v2->y);
// Clip to view edges.
span = angle1 - angle2;
// Back side, i.e. backface culling
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = -clipangle;
}
// The seg is in the view range,
// but not necessarily visible.
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
// killough 1/31/98: Here is where "slime trails" can SOMETIMES occur:
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
backsector = line->backsector;
/* cph - roll up linedef properties in flags */
if ((linedef = curline->linedef)->r_validcount != gametic)
R_RecalcLineFlags();
// Single sided line?
if (backsector)
// killough 3/8/98, 4/4/98: hack for invisible ceilings / deep water
backsector = R_FakeFlat(backsector, &tempsec, NULL, NULL, true);
if (linedef->r_flags & RF_IGNORE) return;
else R_ClipWallSegment (x1, x2, linedef->r_flags & RF_CLOSED);
}
void R_ProjectSprite (mobj_t* thing)
{
fixed_t gzt; // killough 3/27/98
fixed_t tx;
fixed_t xscale;
int x1;
int x2;
spritedef_t *sprdef;
spriteframe_t *sprframe;
int lump;
boolean flip;
vissprite_t *vis;
fixed_t iscale;
int heightsec; // killough 3/27/98
// transform the origin point
fixed_t tr_x = thing->x - viewx;
fixed_t tr_y = thing->y - viewy;
fixed_t gxt = FixedMul(tr_x,viewcos);
fixed_t gyt = -FixedMul(tr_y,viewsin);
fixed_t tz = gxt-gyt;
// thing is behind view plane?
if (tz < MINZ)
return;
// sf: dont draw the object we are viewing through
// client movement prediction - we can be viewing from player position
// but outside the body as well
if(thing == viewobj)
return;
xscale = FixedDiv(projection, tz);
gxt = -FixedMul(tr_x,viewsin);
gyt = FixedMul(tr_y,viewcos);
tx = -(gyt+gxt);
// too far off the side?
if (abs(tx)>(tz<<2))
return;
// decide which patch to use for sprite relative to player
if ((unsigned) thing->sprite >= numsprites)
{
C_Printf ("R_ProjectSprite: invalid sprite number %i\n", thing->sprite);
C_SetConsole();
return;
}
sprdef = &sprites[thing->sprite];
if ((thing->frame&FF_FRAMEMASK) >= sprdef->numframes)
I_Error ("R_ProjectSprite:invalid frame %i for sprite %s",
thing->frame & FF_FRAMEMASK, spritelist[thing->sprite]);
sprframe = &sprdef->spriteframes[thing->frame & FF_FRAMEMASK];
if (sprframe->rotate)
{
// choose a different rotation based on player view
angle_t ang = R_PointToAngle(thing->x, thing->y);
unsigned rot = (ang-thing->angle+(unsigned)(ANG45/2)*9)>>29;
lump = sprframe->lump[rot];
flip = (boolean) sprframe->flip[rot];
}
boolean R_CheckBBox (fixed_t *bspcoord)
{
int boxx, boxy, boxpos;
fixed_t x1, y1, x2, y2;
angle_t angle1, angle2, span, tspan;
cliprange_t *start;
int sx1, sx2;
#ifdef __NeXT__
RD_DrawBBox (bspcoord);
#endif
// find the corners of the box that define the edges from current viewpoint
if (viewx <= bspcoord[BOXLEFT])
boxx = 0;
else if (viewx < bspcoord[BOXRIGHT])
boxx = 1;
else
boxx = 2;
if (viewy >= bspcoord[BOXTOP])
boxy = 0;
else if (viewy > bspcoord[BOXBOTTOM])
boxy = 1;
else
boxy = 2;
boxpos = (boxy<<2)+boxx;
if (boxpos == 5)
return true;
x1 = bspcoord[checkcoord[boxpos][0]];
y1 = bspcoord[checkcoord[boxpos][1]];
x2 = bspcoord[checkcoord[boxpos][2]];
y2 = bspcoord[checkcoord[boxpos][3]];
#ifdef __NeXT__
// RD_DisplayLine (x1, y1, x2, y2, 0.1);
#endif
//
// check clip list for an open space
//
angle1 = R_PointToAngle (x1, y1) - viewangle;
angle2 = R_PointToAngle (x2, y2) - viewangle;
span = angle1 - angle2;
if (span >= ANG180)
return true; // sitting on a line
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
if (tspan >= span)
return false; // totally off the left edge
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
if (tspan >= span)
return false; // totally off the left edge
angle2 = -clipangle;
}
// find the first clippost that touches the source post (adjacent pixels are touching)
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
sx1 = viewangletox[angle1];
sx2 = viewangletox[angle2];
if (sx1 == sx2)
return false; // does not cross a pixel
sx2--;
start = solidsegs;
while (start->last < sx2)
start++;
if (sx1 >= start->first && sx2 <= start->last)
return false; // the clippost contains the new span
return true;
}
void R_AddLine (seg_t *line)
{
int x1, x2;
angle_t angle1, angle2, span, tspan;
#ifdef __NeXT__
RD_DrawLineCheck (line);
#endif
curline = line;
// OPTIMIZE: quickly reject orthogonal back sides
angle1 = R_PointToAngle (line->v1->x, line->v1->y);
angle2 = R_PointToAngle (line->v2->x, line->v2->y);
//
// clip to view edges
// OPTIMIZE: make constant out of 2*clipangle (FIELDOFVIEW)
span = angle1 - angle2;
if (span >= ANG180)
return; // back side
rw_angle1 = angle1; // global angle needed by segcalc
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
if (tspan >= span)
return; // totally off the left edge
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
if (tspan >= span)
return; // totally off the left edge
angle2 = -clipangle;
}
//
// the seg is in the view range, but not necessarily visible
//
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
if (x1 == x2)
return; // does not cross a pixel
backsector = line->backsector;
if (!backsector)
goto clipsolid; // single sided line
if (backsector->ceilingheight <= frontsector->floorheight
|| backsector->floorheight >= frontsector->ceilingheight)
goto clipsolid; // closed door
if (backsector->ceilingheight != frontsector->ceilingheight
|| backsector->floorheight != frontsector->floorheight)
goto clippass; // window
// reject empty lines used for triggers and special events
if (backsector->ceilingpic == frontsector->ceilingpic
&& backsector->floorpic == frontsector->floorpic
&& backsector->lightlevel == frontsector->lightlevel
&& backsector->special == frontsector->special
&& curline->sidedef->midtexture == 0)
return;
clippass:
R_ClipPassWallSegment (x1, x2-1);
return;
clipsolid:
R_ClipSolidWallSegment (x1, x2-1);
}
static void R_AddLine (seg_t *line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
static sector_t tempsec; // killough 3/8/98: ceiling/water hack
curline = line;
angle1 = R_PointToAngle (line->v1->x, line->v1->y);
angle2 = R_PointToAngle (line->v2->x, line->v2->y);
// Clip to view edges.
span = angle1 - angle2;
// Back side, i.e. backface culling
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = 0-clipangle;
}
// The seg is in the view range,
// but not necessarily visible.
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
// killough 1/31/98: Here is where "slime trails" can SOMETIMES occur:
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
#ifdef GL_DOOM
// proff 11/99: we have to add these segs to avoid gaps in OpenGL
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
{
if (V_GetMode() == VID_MODEGL)
{
if (ds_p == drawsegs+maxdrawsegs) // killough 1/98 -- fix 2s line HOM
{
unsigned pos = ds_p - drawsegs; // jff 8/9/98 fix from ZDOOM1.14a
unsigned newmax = maxdrawsegs ? maxdrawsegs*2 : 128; // killough
drawsegs = realloc(drawsegs,newmax*sizeof(*drawsegs));
//ds_p = drawsegs+maxdrawsegs;
ds_p = drawsegs + pos; // jff 8/9/98 fix from ZDOOM1.14a
maxdrawsegs = newmax;
}
ds_p->curline = curline;
ds_p++;
gld_AddWall(curline);
return;
}
else
return;
}
#else
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
#endif
backsector = line->backsector;
// Single sided line?
if (backsector)
// killough 3/8/98, 4/4/98: hack for invisible ceilings / deep water
backsector = R_FakeFlat(backsector, &tempsec, NULL, NULL, true);
/* cph - roll up linedef properties in flags */
if ((linedef = curline->linedef)->r_validcount != gametic)
R_RecalcLineFlags();
if (linedef->r_flags & RF_IGNORE)
{
return;
}
else
R_ClipWallSegment (x1, x2, linedef->r_flags & RF_CLOSED);
}
static boolean R_CheckBBox(fixed_t *bspcoord)
{
INT32 boxpos, sx1, sx2;
fixed_t px1, py1, px2, py2;
angle_t angle1, angle2, span, tspan;
cliprange_t *start;
// Find the corners of the box that define the edges from current viewpoint.
if (viewx <= bspcoord[BOXLEFT])
boxpos = 0;
else if (viewx < bspcoord[BOXRIGHT])
boxpos = 1;
else
boxpos = 2;
if (viewy >= bspcoord[BOXTOP])
boxpos |= 0;
else if (viewy > bspcoord[BOXBOTTOM])
boxpos |= 1<<2;
else
boxpos |= 2<<2;
if (boxpos == 5)
return true;
px1 = bspcoord[checkcoord[boxpos][0]];
py1 = bspcoord[checkcoord[boxpos][1]];
px2 = bspcoord[checkcoord[boxpos][2]];
py2 = bspcoord[checkcoord[boxpos][3]];
// check clip list for an open space
angle1 = R_PointToAngle(px1, py1) - viewangle;
angle2 = R_PointToAngle(px2, py2) - viewangle;
span = angle1 - angle2;
// Sitting on a line?
if (span >= ANGLE_180)
return true;
tspan = angle1 + clipangle;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return false;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return false;
angle2 = -(signed)clipangle;
}
// Find the first clippost that touches the source post (adjacent pixels are touching).
angle1 = (angle1+ANGLE_90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANGLE_90)>>ANGLETOFINESHIFT;
sx1 = viewangletox[angle1];
sx2 = viewangletox[angle2];
// Does not cross a pixel.
if (sx1 == sx2)
return false;
sx2--;
start = solidsegs;
while (start->last < sx2)
start++;
if (sx1 >= start->first && sx2 <= start->last)
return false; // The clippost contains the new span.
return true;
}
boolean R_CheckBBox (fixed_t* bspcoord)
{
int boxx;
int boxy;
int boxpos;
fixed_t x1;
fixed_t y1;
fixed_t x2;
fixed_t y2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
cliprange_t* start;
int sx1;
int sx2;
// Find the corners of the box
// that define the edges from current viewpoint.
if (viewx <= bspcoord[BOXLEFT])
boxx = 0;
else if (viewx < bspcoord[BOXRIGHT])
boxx = 1;
else
boxx = 2;
if (viewy >= bspcoord[BOXTOP])
boxy = 0;
else if (viewy > bspcoord[BOXBOTTOM])
boxy = 1;
else
boxy = 2;
boxpos = (boxy<<2)+boxx;
if (boxpos == 5)
return true;
x1 = bspcoord[checkcoord[boxpos][0]];
y1 = bspcoord[checkcoord[boxpos][1]];
x2 = bspcoord[checkcoord[boxpos][2]];
y2 = bspcoord[checkcoord[boxpos][3]];
// check clip list for an open space
angle1 = R_PointToAngle (x1, y1) - viewangle;
angle2 = R_PointToAngle (x2, y2) - viewangle;
span = angle1 - angle2;
// Sitting on a line?
if (span >= ANG180)
return true;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return false;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return false;
angle2 = -clipangle;
}
// Find the first clippost
// that touches the source post
// (adjacent pixels are touching).
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
sx1 = viewangletox[angle1];
sx2 = viewangletox[angle2];
// Does not cross a pixel.
if (sx1 == sx2)
return false;
sx2--;
start = solidsegs;
while (start->last < sx2)
start++;
if (sx1 >= start->first
&& sx2 <= start->last)
{
// The clippost contains the new span.
return false;
}
return true;
}
//
// R_AddLine
// Clips the given segment
// and adds any visible pieces to the line list.
//
void R_AddLine (seg_t* line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
curline = line;
// OPTIMIZE: quickly reject orthogonal back sides.
// [crispy] remove slime trails
angle1 = R_PointToAngle (line->v1->px, line->v1->py);
angle2 = R_PointToAngle (line->v2->px, line->v2->py);
// Clip to view edges.
// OPTIMIZE: make constant out of 2*clipangle (FIELDOFVIEW).
span = angle1 - angle2;
// Back side? I.e. backface culling?
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
tspan -= 2*clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = -clipangle;
}
// The seg is in the view range,
// but not necessarily visible.
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 == x2)
return;
backsector = line->backsector;
// Single sided line?
if (!backsector)
goto clipsolid;
// [AM] Interpolate sector movement before
// running clipping tests. Frontsector
// should already be interpolated.
R_MaybeInterpolateSector(backsector);
// Closed door.
if (backsector->interpceilingheight <= frontsector->interpfloorheight
|| backsector->interpfloorheight >= frontsector->interpceilingheight)
goto clipsolid;
// Window.
if (backsector->interpceilingheight != frontsector->interpceilingheight
|| backsector->interpfloorheight != frontsector->interpfloorheight)
goto clippass;
// Reject empty lines used for triggers
// and special events.
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (backsector->ceilingpic == frontsector->ceilingpic
&& backsector->floorpic == frontsector->floorpic
&& backsector->lightlevel == frontsector->lightlevel
&& curline->sidedef->midtexture == 0)
{
return;
}
clippass:
R_ClipPassWallSegment (x1, x2-1);
return;
clipsolid:
R_ClipSolidWallSegment (x1, x2-1);
}
void gl_RenderModel(GLSprite * spr, int cm)
{
// [BB/EP] Take care of gl_fogmode and ZADF_FORCE_GL_DEFAULTS.
OVERRIDE_FOGMODE_IF_NECESSARY
FSpriteModelFrame * smf = spr->modelframe;
// Setup transformation.
gl.MatrixMode(GL_MODELVIEW);
gl.PushMatrix();
gl.DepthFunc(GL_LEQUAL);
// [BB] In case the model should be rendered translucent, do back face culling.
// This solves a few of the problems caused by the lack of depth sorting.
// TO-DO: Implement proper depth sorting.
if (!( spr->actor->RenderStyle == LegacyRenderStyles[STYLE_Normal] ))
{
gl.Enable(GL_CULL_FACE);
glFrontFace(GL_CW);
}
int translation = 0;
if ( !(smf->flags & MDL_IGNORETRANSLATION) )
translation = spr->actor->Translation;
// y scale for a sprite means height, i.e. z in the world!
float scaleFactorX = FIXED2FLOAT(spr->actor->scaleX) * smf->xscale;
float scaleFactorY = FIXED2FLOAT(spr->actor->scaleX) * smf->yscale;
float scaleFactorZ = FIXED2FLOAT(spr->actor->scaleY) * smf->zscale;
float pitch = 0;
float rotateOffset = 0;
float angle = ANGLE_TO_FLOAT(spr->actor->angle);
// [BB] Workaround for the missing pitch information.
if ( (smf->flags & MDL_PITCHFROMMOMENTUM) )
{
const double x = static_cast<double>(spr->actor->velx);
const double y = static_cast<double>(spr->actor->vely);
const double z = static_cast<double>(spr->actor->velz);
// [BB] Calculate the pitch using spherical coordinates.
pitch = float(atan( z/sqrt(x*x+y*y) ) / M_PI * 180);
}
if( smf->flags & MDL_ROTATING )
{
const float time = smf->rotationSpeed*GetTimeFloat()/200.f;
rotateOffset = float((time - xs_FloorToInt(time)) *360.f );
}
if (gl_fogmode != 2 && (GLRenderer->mLightCount == 0 || !gl_light_models))
{
// Model space => World space
gl.Translatef(spr->x, spr->z, spr->y );
if ( !(smf->flags & MDL_ALIGNANGLE) )
gl.Rotatef(-angle, 0, 1, 0);
// [BB] Change the angle so that the object is exactly facing the camera in the x/y plane.
else
gl.Rotatef( -ANGLE_TO_FLOAT ( R_PointToAngle ( spr->actor->x, spr->actor->y ) ), 0, 1, 0);
// [BB] Change the pitch so that the object is vertically facing the camera (only makes sense combined with MDL_ALIGNANGLE).
if ( (smf->flags & MDL_ALIGNPITCH) )
{
const fixed_t distance = R_PointToDist2( spr->actor->x - viewx, spr->actor->y - viewy );
const float pitch = RAD2DEG ( atan2( FIXED2FLOAT ( spr->actor->z - viewz ), FIXED2FLOAT ( distance ) ) );
gl.Rotatef(pitch, 0, 0, 1);
}
// [BB] Workaround for the missing pitch information.
if (pitch != 0) gl.Rotatef(pitch, 0, 0, 1);
// [BB] Special flag for flat, beam like models.
if ( (smf->flags & MDL_ROLLAGAINSTANGLE) )
gl.Rotatef( gl_RollAgainstAngleHelper ( spr->actor ), 1, 0, 0);
// Model rotation.
// [BB] Added Doomsday like rotation of the weapon pickup models.
// The rotation angle is based on the elapsed time.
if( smf->flags & MDL_ROTATING )
{
gl.Translatef(smf->rotationCenterX, smf->rotationCenterY, smf->rotationCenterZ);
gl.Rotatef(rotateOffset, smf->xrotate, smf->yrotate, smf->zrotate);
gl.Translatef(-smf->rotationCenterX, -smf->rotationCenterY, -smf->rotationCenterZ);
}
// Scaling and model space offset.
gl.Scalef(scaleFactorX, scaleFactorZ, scaleFactorY);
// [BB] Apply zoffset here, needs to be scaled by 1 / smf->zscale, so that zoffset doesn't depend on the z-scaling.
gl.Translatef(0., smf->zoffset / smf->zscale, 0.);
gl_RenderFrameModels( smf, spr->actor->state, spr->actor->tics, RUNTIME_TYPE(spr->actor), cm, NULL, NULL, translation );
}
else
{
Matrix3x4 ModelToWorld;
Matrix3x4 NormalTransform;
// For radial fog we need to pass coordinates in world space in order to calculate distances.
// That means that the local transformations cannot be part of the modelview matrix
ModelToWorld.MakeIdentity();
// Model space => World space
ModelToWorld.Translate(spr->x, spr->z, spr->y);
if ( !(smf->flags & MDL_ALIGNANGLE) )
ModelToWorld.Rotate(0,1,0, -angle);
// [BB] Change the angle so that the object is exactly facing the camera in the x/y plane.
else
ModelToWorld.Rotate(0,1,0, -ANGLE_TO_FLOAT ( R_PointToAngle ( spr->actor->x, spr->actor->y ) ) );
// [BB] Change the pitch so that the object is vertically facing the camera (only makes sense combined with MDL_ALIGNANGLE).
if ( (smf->flags & MDL_ALIGNPITCH) )
{
const fixed_t distance = R_PointToDist2( spr->actor->x - viewx, spr->actor->y - viewy );
const float pitch = RAD2DEG ( atan2( FIXED2FLOAT ( spr->actor->z - viewz ), FIXED2FLOAT ( distance ) ) );
ModelToWorld.Rotate(0,0,1,pitch);
}
// [BB] Workaround for the missing pitch information.
if (pitch != 0) ModelToWorld.Rotate(0,0,1,pitch);
// [BB] Special flag for flat, beam like models.
if ( (smf->flags & MDL_ROLLAGAINSTANGLE) )
ModelToWorld.Rotate(1, 0, 0, gl_RollAgainstAngleHelper ( spr->actor ));
// Model rotation.
// [BB] Added Doomsday like rotation of the weapon pickup models.
// The rotation angle is based on the elapsed time.
if( smf->flags & MDL_ROTATING )
{
ModelToWorld.Translate(-smf->rotationCenterX, -smf->rotationCenterY, -smf->rotationCenterZ);
ModelToWorld.Rotate(smf->xrotate, smf->yrotate, smf->zrotate, rotateOffset);
ModelToWorld.Translate(smf->rotationCenterX, smf->rotationCenterY, smf->rotationCenterZ);
}
ModelToWorld.Scale(scaleFactorX, scaleFactorZ, scaleFactorY);
// [BB] Apply zoffset here, needs to be scaled by 1 / smf->zscale, so that zoffset doesn't depend on the z-scaling.
ModelToWorld.Translate(0., smf->zoffset / smf->zscale, 0.);
if (!gl_light_models)
{
gl_RenderFrameModels( smf, spr->actor->state, spr->actor->tics, RUNTIME_TYPE(spr->actor), cm, &ModelToWorld, NULL, translation );
}
else
{
// The normal transform matrix only contains the inverse rotations and scalings but not the translations
NormalTransform.MakeIdentity();
NormalTransform.Scale(1.f/scaleFactorX, 1.f/scaleFactorZ, 1.f/scaleFactorY);
if( smf->flags & MDL_ROTATING ) NormalTransform.Rotate(smf->xrotate, smf->yrotate, smf->zrotate, -rotateOffset);
if (pitch != 0) NormalTransform.Rotate(0,0,1,-pitch);
if (angle != 0) NormalTransform.Rotate(0,1,0, angle);
gl_RenderFrameModels( smf, spr->actor->state, spr->actor->tics, RUNTIME_TYPE(spr->actor), cm, &ModelToWorld, &NormalTransform, translation );
}
}
gl.MatrixMode(GL_MODELVIEW);
gl.PopMatrix();
gl.DepthFunc(GL_LESS);
if (!( spr->actor->RenderStyle == LegacyRenderStyles[STYLE_Normal] ))
gl.Disable(GL_CULL_FACE);
}
//
// R_AddLine
// Clips the given segment and adds any visible pieces to the line list.
//
static void R_AddLine(seg_t *line)
{
INT32 x1, x2;
angle_t angle1, angle2, span, tspan;
static sector_t tempsec; // ceiling/water hack
if (line->polyseg && !(line->polyseg->flags & POF_RENDERSIDES))
return;
curline = line;
portalline = false;
// OPTIMIZE: quickly reject orthogonal back sides.
angle1 = R_PointToAngle(line->v1->x, line->v1->y);
angle2 = R_PointToAngle(line->v2->x, line->v2->y);
// Clip to view edges.
span = angle1 - angle2;
// Back side? i.e. backface culling?
if (span >= ANGLE_180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = -(signed)clipangle;
}
// The seg is in the view range, but not necessarily visible.
angle1 = (angle1+ANGLE_90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANGLE_90)>>ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
backsector = line->backsector;
// Portal line
if (line->linedef->special == 40 && line->side == 0)
{
if (portalrender < cv_maxportals.value)
{
// Find the other side!
INT32 line2 = P_FindSpecialLineFromTag(40, line->linedef->tag, -1);
if (line->linedef == &lines[line2])
line2 = P_FindSpecialLineFromTag(40, line->linedef->tag, line2);
if (line2 >= 0) // found it!
{
R_AddPortal(line->linedef-lines, line2, x1, x2); // Remember the lines for later rendering
//return; // Don't fill in that space now!
goto clipsolid;
}
}
// Recursed TOO FAR (viewing a portal within a portal)
// So uhhh, render it as a normal wall instead or something ???
}
// Single sided line?
if (!backsector)
goto clipsolid;
backsector = R_FakeFlat(backsector, &tempsec, NULL, NULL, true);
doorclosed = 0;
// Closed door.
#ifdef ESLOPE
if (frontsector->f_slope || frontsector->c_slope || backsector->f_slope || backsector->c_slope)
{
fixed_t frontf1,frontf2, frontc1, frontc2; // front floor/ceiling ends
fixed_t backf1, backf2, backc1, backc2; // back floor ceiling ends
#define SLOPEPARAMS(slope, end1, end2, normalheight) \
if (slope) { \
end1 = P_GetZAt(slope, line->v1->x, line->v1->y); \
end2 = P_GetZAt(slope, line->v2->x, line->v2->y); \
} else \
end1 = end2 = normalheight;
SLOPEPARAMS(frontsector->f_slope, frontf1, frontf2, frontsector->floorheight)
SLOPEPARAMS(frontsector->c_slope, frontc1, frontc2, frontsector->ceilingheight)
SLOPEPARAMS( backsector->f_slope, backf1, backf2, backsector->floorheight)
SLOPEPARAMS( backsector->c_slope, backc1, backc2, backsector->ceilingheight)
#undef SLOPEPARAMS
if ((backc1 <= frontf1 && backc2 <= frontf2)
|| (backf1 >= frontc1 && backf2 >= frontc2))
{
goto clipsolid;
}
// Check for automap fix. Store in doorclosed for r_segs.c
doorclosed = (backc1 <= backf1 && backc2 <= backf2
&& ((backc1 >= frontc1 && backc2 >= frontc2) || curline->sidedef->toptexture)
&& ((backf1 <= frontf1 && backf2 >= frontf2) || curline->sidedef->bottomtexture)
&& (backsector->ceilingpic != skyflatnum || frontsector->ceilingpic != skyflatnum));
if (doorclosed)
goto clipsolid;
// Window.
if (backc1 != frontc1 || backc2 != frontc2
|| backf1 != frontf1 || backf2 != frontf2)
{
goto clippass;
}
}
static dboolean R_CheckBBox(const fixed_t *bspcoord)
{
int boxpos;
const int *check;
angle_t angle1;
angle_t angle2;
cliprange_t *start;
int sx1;
int sx2;
// Find the corners of the box
// that define the edges from current viewpoint.
boxpos = (viewx <= bspcoord[BOXLEFT] ? 0 : viewx < bspcoord[BOXRIGHT ] ? 1 : 2) +
(viewy >= bspcoord[BOXTOP ] ? 0 : viewy > bspcoord[BOXBOTTOM] ? 4 : 8);
if (boxpos == 5)
return true;
check = checkcoord[boxpos];
// check clip list for an open space
angle1 = R_PointToAngle(bspcoord[check[0]], bspcoord[check[1]]) - viewangle;
angle2 = R_PointToAngle(bspcoord[check[2]], bspcoord[check[3]]) - viewangle;
// cph - replaced old code, which was unclear and badly commented
// Much more efficient code now
if ((signed int)angle1 < (signed int)angle2)
{
// Either angle1 or angle2 is behind us, so it doesn't matter if we
// change it to the correct sign
if (angle1 >= ANG180 && angle1 < ANG270)
angle1 = INT_MAX; // which is ANG180 - 1
else
angle2 = INT_MIN;
}
if ((signed int)angle2 >= (signed int)clipangle)
return false; // Both off left edge
if ((signed int)angle1 <= -(signed int)clipangle)
return false; // Both off right edge
if ((signed int)angle1 >= (signed int)clipangle)
angle1 = clipangle; // Clip at left edge
if ((signed int)angle2 <= -(signed int)clipangle)
angle2 = 0 - clipangle; // Clip at right edge
// Find the first clippost
// that touches the source post
// (adjacent pixels are touching).
angle1 = (angle1 + ANG90) >> ANGLETOFINESHIFT;
angle2 = (angle2 + ANG90) >> ANGLETOFINESHIFT;
sx1 = viewangletox[angle1];
sx2 = viewangletox[angle2];
// SoM: To account for the rounding error of the old BSP system, I needed to
// make adjustments.
// SoM: Moved this to before the "does not cross a pixel" check to fix
// another slime trail
if (sx1 > 0)
sx1--;
if (sx2 < viewwidth - 1)
sx2++;
// SoM: Removed the "does not cross a pixel" test
start = solidsegs;
while (start->last < sx2)
++start;
if (sx1 >= start->first && sx2 <= start->last)
return false; // The clippost contains the new span.
return true;
}
static void R_AddLine (seg_t *line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
static sector_t tempsec;
curline = line;
angle1 = R_PointToAngle(line->v1->x, line->v1->y);
angle2 = R_PointToAngle(line->v2->x, line->v2->y);
span = angle1 - angle2;
if (span >= ANG180)
return;
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2 * clipangle)
{
tspan -= 2 * clipangle;
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2 * clipangle)
{
tspan -= 2 * clipangle;
if (tspan >= span)
return;
angle2 = 0-clipangle;
}
angle1 = (angle1 + ANG90) >> ANGLETOFINESHIFT;
angle2 = (angle2 + ANG90) >> ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
if (x1 >= x2)
return;
backsector = line->backsector;
if (backsector)
backsector = R_FakeFlat(backsector, &tempsec, NULL, NULL, true);
if ((linedef = curline->linedef)->r_validcount != gametic)
R_RecalcLineFlags();
if (linedef->r_flags & RF_IGNORE)
return;
else
R_ClipWallSegment (x1, x2, linedef->r_flags & RF_CLOSED);
}
//
// R_AddLine
// Clips the given segment
// and adds any visible pieces to the line list.
//
void R_AddLine (seg_t *line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
static sector_t tempsec; // killough 3/8/98: ceiling/water hack
curline = line;
// [RH] Color if not texturing line
dc_color = ((line - segs) & 31) * 4;
// OPTIMIZE: quickly reject orthogonal back sides.
angle1 = R_PointToAngle (line->v1->x, line->v1->y);
angle2 = R_PointToAngle (line->v2->x, line->v2->y);
// Clip to view edges.
// OPTIMIZE: make constant out of 2*clipangle (FIELDOFVIEW).
span = angle1 - angle2;
// Back side? I.e. backface culling?
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
// Totally off the left edge?
if (tspan - 2*clipangle >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
// Totally off the left edge?
if (tspan - 2*clipangle >= span)
return;
angle2 = (unsigned) (-(int)clipangle);
}
// The seg is in the view range, but not necessarily visible.
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
// killough 1/31/98: Here is where "slime trails" can SOMETIMES occur:
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
rw_start = x1;
rw_stop = x2 - 1;
rw_frontcz1 = P_CeilingHeight(line->v1->x, line->v1->y, frontsector);
rw_frontfz1 = P_FloorHeight(line->v1->x, line->v1->y, frontsector);
rw_frontcz2 = P_CeilingHeight(line->v2->x, line->v2->y, frontsector);
rw_frontfz2 = P_FloorHeight(line->v2->x, line->v2->y, frontsector);
backsector = line->backsector;
// Single sided line?
if (!backsector)
goto clipsolid;
// killough 3/8/98, 4/4/98: hack for invisible ceilings / deep water
backsector = R_FakeFlat (backsector, &tempsec, NULL, NULL, true);
rw_backcz1 = P_CeilingHeight(line->v1->x, line->v1->y, backsector);
rw_backfz1 = P_FloorHeight(line->v1->x, line->v1->y, backsector);
rw_backcz2 = P_CeilingHeight(line->v2->x, line->v2->y, backsector);
rw_backfz2 = P_FloorHeight(line->v2->x, line->v2->y, backsector);
// [SL] Check for closed doors or other scenarios that would make this
// line seg solid.
//
// This fixes the automap floor height bug -- killough 1/18/98:
// killough 4/7/98: optimize: save result in doorclosed for use in r_segs.c
if (!(line->linedef->flags & ML_TWOSIDED) ||
(rw_backcz1 <= rw_frontfz1 && rw_backcz2 <= rw_frontfz2) ||
(rw_backfz1 >= rw_frontcz1 && rw_backfz2 >= rw_frontcz2) ||
// handle a case where the backsector slopes one direction
// and the frontsector slopes the opposite:
(rw_backcz1 <= rw_frontfz1 && rw_backfz1 >= rw_frontcz1) ||
(rw_backcz2 <= rw_frontfz2 && rw_backfz2 >= rw_frontcz2) ||
// if door is closed because back is shut:
((rw_backcz1 <= rw_backfz1 && rw_backcz2 <= rw_backfz2) &&
// preserve a kind of transparent door/lift special effect:
((rw_backcz1 >= rw_frontcz1 && rw_backcz2 >= rw_frontcz2) ||
line->sidedef->toptexture) &&
((rw_backfz1 <= rw_frontfz1 && rw_backfz2 <= rw_frontfz2) ||
line->sidedef->bottomtexture) &&
// properly render skies (consider door "open" if both ceilings are sky):
(backsector->ceilingpic !=skyflatnum ||
frontsector->ceilingpic!=skyflatnum)))
{
doorclosed = true;
goto clipsolid;
}
else
{
doorclosed = false;
}
// Window.
if (!P_IdenticalPlanes(&frontsector->ceilingplane, &backsector->ceilingplane) ||
!P_IdenticalPlanes(&frontsector->floorplane, &backsector->floorplane))
goto clippass;
// Reject empty lines used for triggers
// and special events.
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (backsector->lightlevel == frontsector->lightlevel
&& backsector->floorpic == frontsector->floorpic
&& backsector->ceilingpic == frontsector->ceilingpic
&& curline->sidedef->midtexture == 0
// killough 3/7/98: Take flats offsets into account:
&& backsector->floor_xoffs == frontsector->floor_xoffs
&& (backsector->floor_yoffs + backsector->base_floor_yoffs) == (frontsector->floor_yoffs + backsector->base_floor_yoffs)
&& backsector->ceiling_xoffs == frontsector->ceiling_xoffs
&& (backsector->ceiling_yoffs + backsector->base_ceiling_yoffs) == (frontsector->ceiling_yoffs + frontsector->base_ceiling_yoffs)
// killough 4/16/98: consider altered lighting
&& backsector->floorlightsec == frontsector->floorlightsec
&& backsector->ceilinglightsec == frontsector->ceilinglightsec
// [RH] Also consider colormaps
&& backsector->floorcolormap == frontsector->floorcolormap
&& backsector->ceilingcolormap == frontsector->ceilingcolormap
// [RH] and scaling
&& backsector->floor_xscale == frontsector->floor_xscale
&& backsector->floor_yscale == frontsector->floor_yscale
&& backsector->ceiling_xscale == frontsector->ceiling_xscale
&& backsector->ceiling_yscale == frontsector->ceiling_yscale
// [RH] and rotation
&& (backsector->floor_angle + backsector->base_floor_angle) == (frontsector->floor_angle + frontsector->base_floor_angle)
&& (backsector->ceiling_angle + backsector->base_ceiling_angle) == (frontsector->ceiling_angle + frontsector->base_ceiling_angle)
)
{
return;
}
clippass:
R_ClipPassWallSegment (x1, x2-1);
return;
clipsolid:
R_ClipSolidWallSegment (x1, x2-1);
}
//
// R_AddLine
// Clips the given segment
// and adds any visible pieces to the line list.
//
void R_AddLine(seg_t* line, vector<SegInfo>& segInfo, int parentIdx)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
curline = line;
// OPTIMIZE: quickly reject orthogonal back sides.
angle1 = R_PointToAngle(line->v1->x, line->v1->y);
angle2 = R_PointToAngle(line->v2->x, line->v2->y);
// Clip to view edges.
// OPTIMIZE: make constant out of 2*clipangle (FIELDOFVIEW).
span = angle1 - angle2;
// Back side? I.e. backface culling?
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2 * clipangle)
{
tspan -= 2 * clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2 * clipangle)
{
tspan -= 2 * clipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = -static_cast<int>(clipangle);
}
// The seg is in the view range,
// but not necessarily visible.
angle1 = (angle1 + ANG90) >> ANGLETOFINESHIFT;
angle2 = (angle2 + ANG90) >> ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 == x2)
return;
backsector = line->backsector;
// Single sided line?
if (!backsector)
goto clipsolid;
// Closed door.
if (backsector->ceilingheight <= frontsector->floorheight
|| backsector->floorheight >= frontsector->ceilingheight)
goto clipsolid;
// Window.
if (backsector->ceilingheight != frontsector->ceilingheight
|| backsector->floorheight != frontsector->floorheight)
goto clippass;
// Reject empty lines used for triggers
// and special events.
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (backsector->ceilingpic == frontsector->ceilingpic
&& backsector->floorpic == frontsector->floorpic
&& backsector->lightlevel == frontsector->lightlevel
&& curline->sidedef->midtexture == 0)
{
return;
}
clippass:
AddSegInfo(line, segInfo, parentIdx);
R_ClipPassWallSegment(x1, x2 - 1);
return;
clipsolid:
AddSegInfo(line, segInfo, parentIdx);
R_ClipSolidWallSegment(x1, x2 - 1);
}
//
// R_AddLine
// Clips the given segment and adds any visible pieces to the line list.
//
static void R_AddLine(seg_t *line)
{
INT32 x1, x2;
angle_t angle1, angle2, span, tspan;
static sector_t tempsec; // ceiling/water hack
if (line->polyseg && !(line->polyseg->flags & POF_RENDERSIDES))
return;
curline = line;
// OPTIMIZE: quickly reject orthogonal back sides.
angle1 = R_PointToAngle(line->v1->x, line->v1->y);
angle2 = R_PointToAngle(line->v2->x, line->v2->y);
// Clip to view edges.
span = angle1 - angle2;
// Back side? i.e. backface culling?
if (span >= ANGLE_180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > doubleclipangle)
{
tspan -= doubleclipangle;
// Totally off the left edge?
if (tspan >= span)
return;
angle2 = -(signed)clipangle;
}
// The seg is in the view range, but not necessarily visible.
angle1 = (angle1+ANGLE_90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANGLE_90)>>ANGLETOFINESHIFT;
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
backsector = line->backsector;
// Portal line
if (line->linedef->special == 40 && P_PointOnLineSide(viewx, viewy, line->linedef) == 0)
{
if (portalrender < cv_maxportals.value)
{
// Find the other side!
INT32 line2 = P_FindSpecialLineFromTag(40, line->linedef->tag, -1);
if (line->linedef == &lines[line2])
line2 = P_FindSpecialLineFromTag(40, line->linedef->tag, line2);
if (line2 >= 0) // found it!
{
R_AddPortal(line->linedef-lines, line2, x1, x2); // Remember the lines for later rendering
//return; // Don't fill in that space now!
goto clipsolid;
}
}
// Recursed TOO FAR (viewing a portal within a portal)
// So uhhh, render it as a normal wall instead or something ???
}
// Single sided line?
if (!backsector)
goto clipsolid;
backsector = R_FakeFlat(backsector, &tempsec, NULL, NULL, true);
doorclosed = 0;
// Closed door.
#ifdef ESLOPE
// Just don't bother checking this if one side is sloped. This is probably inefficient, but it's better than
// random renderer stopping around slopes...
if (!(frontsector->f_slope || frontsector->c_slope || backsector->f_slope || backsector->c_slope))
#endif
if (backsector->ceilingheight <= frontsector->floorheight
|| backsector->floorheight >= frontsector->ceilingheight)
{
goto clipsolid;
}
// Check for automap fix. Store in doorclosed for r_segs.c
doorclosed = R_DoorClosed();
if (doorclosed)
goto clipsolid;
// Window.
if (backsector->ceilingheight != frontsector->ceilingheight
|| backsector->floorheight != frontsector->floorheight)
{
goto clippass;
}
// Reject empty lines used for triggers and special events.
// Identical floor and ceiling on both sides, identical light levels on both sides,
// and no middle texture.
if (
#ifdef POLYOBJECTS
!line->polyseg &&
#endif
backsector->ceilingpic == frontsector->ceilingpic
&& backsector->floorpic == frontsector->floorpic
#ifdef ESLOPE
&& backsector->f_slope == frontsector->f_slope
&& backsector->c_slope == frontsector->c_slope
#endif
&& backsector->lightlevel == frontsector->lightlevel
&& !curline->sidedef->midtexture
// Check offsets too!
&& backsector->floor_xoffs == frontsector->floor_xoffs
&& backsector->floor_yoffs == frontsector->floor_yoffs
&& backsector->floorpic_angle == frontsector->floorpic_angle
&& backsector->ceiling_xoffs == frontsector->ceiling_xoffs
&& backsector->ceiling_yoffs == frontsector->ceiling_yoffs
&& backsector->ceilingpic_angle == frontsector->ceilingpic_angle
// Consider altered lighting.
&& backsector->floorlightsec == frontsector->floorlightsec
&& backsector->ceilinglightsec == frontsector->ceilinglightsec
// Consider colormaps
&& backsector->extra_colormap == frontsector->extra_colormap
&& ((!frontsector->ffloors && !backsector->ffloors)
|| frontsector->tag == backsector->tag))
{
return;
}
clippass:
R_ClipPassWallSegment(x1, x2 - 1);
return;
clipsolid:
R_ClipSolidWallSegment(x1, x2 - 1);
}
//
// R_AddLine
// Clips the given segment
// and adds any visible pieces to the line list.
//
void R_AddLine (seg_t *line)
{
int x1;
int x2;
angle_t angle1;
angle_t angle2;
angle_t span;
angle_t tspan;
static sector_t tempsec; // killough 3/8/98: ceiling/water hack
curline = line;
// [RH] Color if not texturing line
dc_color = ((line - segs) & 31) * 4;
// OPTIMIZE: quickly reject orthogonal back sides.
angle1 = R_PointToAngle (line->v1->x, line->v1->y);
angle2 = R_PointToAngle (line->v2->x, line->v2->y);
// Clip to view edges.
// OPTIMIZE: make constant out of 2*clipangle (FIELDOFVIEW).
span = angle1 - angle2;
// Back side? I.e. backface culling?
if (span >= ANG180)
return;
// Global angle needed by segcalc.
rw_angle1 = angle1;
angle1 -= viewangle;
angle2 -= viewangle;
tspan = angle1 + clipangle;
if (tspan > 2*clipangle)
{
// Totally off the left edge?
if (tspan - 2*clipangle >= span)
return;
angle1 = clipangle;
}
tspan = clipangle - angle2;
if (tspan > 2*clipangle)
{
// Totally off the left edge?
if (tspan - 2*clipangle >= span)
return;
angle2 = (unsigned) (-(int)clipangle);
}
// The seg is in the view range, but not necessarily visible.
angle1 = (angle1+ANG90)>>ANGLETOFINESHIFT;
angle2 = (angle2+ANG90)>>ANGLETOFINESHIFT;
// killough 1/31/98: Here is where "slime trails" can SOMETIMES occur:
x1 = viewangletox[angle1];
x2 = viewangletox[angle2];
// Does not cross a pixel?
if (x1 >= x2) // killough 1/31/98 -- change == to >= for robustness
return;
backsector = line->backsector;
// Single sided line?
if (!backsector)
goto clipsolid;
// killough 3/8/98, 4/4/98: hack for invisible ceilings / deep water
backsector = R_FakeFlat (backsector, &tempsec, NULL, NULL, true);
doorclosed = 0; // killough 4/16/98
// Closed door.
if (backsector->ceilingheight <= frontsector->floorheight
|| backsector->floorheight >= frontsector->ceilingheight)
goto clipsolid;
// This fixes the automap floor height bug -- killough 1/18/98:
// killough 4/7/98: optimize: save result in doorclosed for use in r_segs.c
if ((doorclosed = R_DoorClosed()))
goto clipsolid;
// Window.
if (backsector->ceilingheight != frontsector->ceilingheight
|| backsector->floorheight != frontsector->floorheight)
goto clippass;
// Reject empty lines used for triggers
// and special events.
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (backsector->lightlevel == frontsector->lightlevel
&& backsector->floorpic == frontsector->floorpic
&& backsector->ceilingpic == frontsector->ceilingpic
&& curline->sidedef->midtexture == 0
// killough 3/7/98: Take flats offsets into account:
&& backsector->floor_xoffs == frontsector->floor_xoffs
&& (backsector->floor_yoffs + backsector->base_floor_yoffs) == (frontsector->floor_yoffs + backsector->base_floor_yoffs)
&& backsector->ceiling_xoffs == frontsector->ceiling_xoffs
&& (backsector->ceiling_yoffs + backsector->base_ceiling_yoffs) == (frontsector->ceiling_yoffs + frontsector->base_ceiling_yoffs)
// killough 4/16/98: consider altered lighting
&& backsector->floorlightsec == frontsector->floorlightsec
&& backsector->ceilinglightsec == frontsector->ceilinglightsec
// [RH] Also consider colormaps
&& backsector->floorcolormap == frontsector->floorcolormap
&& backsector->ceilingcolormap == frontsector->ceilingcolormap
// [RH] and scaling
&& backsector->floor_xscale == frontsector->floor_xscale
&& backsector->floor_yscale == frontsector->floor_yscale
&& backsector->ceiling_xscale == frontsector->ceiling_xscale
&& backsector->ceiling_yscale == frontsector->ceiling_yscale
// [RH] and rotation
&& (backsector->floor_angle + backsector->base_floor_angle) == (frontsector->floor_angle + frontsector->base_floor_angle)
&& (backsector->ceiling_angle + backsector->base_ceiling_angle) == (frontsector->ceiling_angle + frontsector->base_ceiling_angle)
)
{
return;
}
clippass:
R_ClipPassWallSegment (x1, x2-1);
return;
clipsolid:
R_ClipSolidWallSegment (x1, x2-1);
}