diff --git a/src/r_plane.c b/src/r_plane.c
index 7642a4dd69a4310c78dc235f7fdc43d4d4a104bd..a0de048ea8c6fe7eac8265d1cdfd3559d9bba1d6 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -83,7 +83,7 @@ static fixed_t planeheight;
fixed_t yslopetab[MAXVIDHEIGHT*16];
fixed_t *yslope;
-static fixed_t xoffs, yoffs;
+static INT64 xoffs, yoffs;
static dvector3_t slope_origin, slope_u, slope_v;
static dvector3_t slope_lightu, slope_lightv;
@@ -376,19 +376,25 @@ visplane_t *R_FindPlane(sector_t *sector, fixed_t height, INT32 picnum, INT32 li
visplane_t *check;
unsigned hash;
+ float offset_xd = FixedToFloat(xoff) / FixedToFloat(xscale ? xscale : 1);
+ float offset_yd = FixedToFloat(yoff) / FixedToFloat(yscale ? yscale : 1);
+
+ INT64 offset_x = offset_xd * FRACUNIT;
+ INT64 offset_y = offset_yd * FRACUNIT;
+
if (!slope) // Don't mess with this right now if a slope is involved
{
- xoff += FixedMul(viewx, xscale);
- yoff -= FixedMul(viewy, yscale);
+ offset_x += viewx;
+ offset_y -= viewy;
if (plangle != 0)
{
// Add the view offset, rotated by the plane angle.
float ang = ANG2RAD(plangle);
- float x = FixedToFloat(xoff);
- float y = FixedToFloat(yoff);
- xoff = FloatToFixed(x * cos(ang) + y * sin(ang));
- yoff = FloatToFixed(-x * sin(ang) + y * cos(ang));
+ float x = offset_x / (float)FRACUNIT;
+ float y = offset_y / (float)FRACUNIT;
+ offset_x = (x * cos(ang) + y * sin(ang)) * FRACUNIT;
+ offset_y = (-x * sin(ang) + y * cos(ang)) * FRACUNIT;
}
}
@@ -399,16 +405,19 @@ visplane_t *R_FindPlane(sector_t *sector, fixed_t height, INT32 picnum, INT32 li
float ang = ANG2RAD(polyobj->angle);
float x = FixedToFloat(polyobj->centerPt.x);
float y = FixedToFloat(polyobj->centerPt.y);
- xoff -= FloatToFixed(x * cos(ang) + y * sin(ang));
- yoff -= FloatToFixed(x * sin(ang) - y * cos(ang));
+ offset_x -= (x * cos(ang) + y * sin(ang)) * FRACUNIT;
+ offset_y -= (x * sin(ang) - y * cos(ang)) * FRACUNIT;
}
else
{
- xoff -= polyobj->centerPt.x;
- yoff += polyobj->centerPt.y;
+ offset_x -= polyobj->centerPt.x;
+ offset_y += polyobj->centerPt.y;
}
}
+ offset_x = ((INT64)offset_x * xscale) / FRACUNIT;
+ offset_y = ((INT64)offset_y * yscale) / FRACUNIT;
+
// This appears to fix the Nimbus Ruins sky bug.
if (picnum == skyflatnum && pfloor)
{
@@ -423,7 +432,7 @@ visplane_t *R_FindPlane(sector_t *sector, fixed_t height, INT32 picnum, INT32 li
{
if (height == check->height && picnum == check->picnum
&& lightlevel == check->lightlevel
- && xoff == check->xoffs && yoff == check->yoffs
+ && offset_x == check->xoffs && offset_y == check->yoffs
&& xscale == check->xscale && yscale == check->yscale
&& planecolormap == check->extra_colormap
&& check->viewx == viewx && check->viewy == viewy && check->viewz == viewz
@@ -449,8 +458,8 @@ visplane_t *R_FindPlane(sector_t *sector, fixed_t height, INT32 picnum, INT32 li
check->lightlevel = lightlevel;
check->minx = vid.width;
check->maxx = -1;
- check->xoffs = xoff;
- check->yoffs = yoff;
+ check->xoffs = offset_x;
+ check->yoffs = offset_y;
check->xscale = xscale;
check->yscale = yscale;
check->extra_colormap = planecolormap;
@@ -658,13 +667,13 @@ static void R_DrawSkyPlane(visplane_t *pl)
}
// Returns the height of the sloped plane at (x, y) as a double
-static double R_GetSlopeZAt(const pslope_t *slope, fixed_t x, fixed_t y)
+static double R_GetSlopeZAt(const pslope_t *slope, INT64 x, INT64 y)
{
// If you want to reimplement this using just the equation constants, use this instead:
// (d + a*x + b*y) * -(1.0 / c)
- double px = FixedToDouble(x) - slope->dorigin.x;
- double py = FixedToDouble(y) - slope->dorigin.y;
+ double px = (x / (double)FRACUNIT) - slope->dorigin.x;
+ double py = (y / (double)FRACUNIT) - slope->dorigin.y;
double dist = (px * slope->dnormdir.x) + (py * slope->dnormdir.y);
@@ -672,10 +681,10 @@ static double R_GetSlopeZAt(const pslope_t *slope, fixed_t x, fixed_t y)
}
// Sets the texture origin vector of the sloped plane.
-static void R_SetSlopePlaneOrigin(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xoff, fixed_t yoff, fixed_t angle)
+static void R_SetSlopePlaneOrigin(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, INT64 xoff, INT64 yoff, fixed_t angle)
{
- INT64 vx = (INT64)xpos + (INT64)xoff;
- INT64 vy = (INT64)ypos - (INT64)yoff;
+ INT64 vx = (INT64)xpos + xoff;
+ INT64 vy = (INT64)ypos - yoff;
float vxf = vx / (float)FRACUNIT;
float vyf = vy / (float)FRACUNIT;
@@ -702,7 +711,7 @@ void R_SetSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos,
slope->moved = false;
}
- R_SetSlopePlaneOrigin(slope, xpos, ypos, zpos, xoff, yoff, angle);
+ R_SetSlopePlaneOrigin(slope, xpos, ypos, zpos, (INT64)xoff, (INT64)yoff, angle);
height = R_GetSlopeZAt(slope, xpos, ypos);
zeroheight = height - FixedToDouble(zpos);
@@ -735,7 +744,7 @@ void R_SetSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos,
}
// This function calculates all of the vectors necessary for drawing a sloped and scaled plane.
-void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle)
+void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, INT64 xoff, INT64 yoff, angle_t angle, angle_t plangle)
{
double height, z_at_xy;
float ang;
@@ -836,9 +845,11 @@ static void CalcSlopePlaneVectors(visplane_t *pl, fixed_t xoff, fixed_t yoff)
{
if (!ds_fog && (pl->xscale != FRACUNIT || pl->yscale != FRACUNIT))
{
+ float offset_x = FixedToFloat(xoff) / FixedToFloat(pl->xscale ? pl->xscale : 1);
+ float offset_y = FixedToFloat(yoff) / FixedToFloat(pl->yscale ? pl->yscale : 1);
R_SetScaledSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz,
FixedDiv(FRACUNIT, pl->xscale), FixedDiv(FRACUNIT, pl->yscale),
- FixedDiv(xoff, pl->xscale), FixedDiv(yoff, pl->yscale), pl->viewangle, pl->plangle);
+ (INT64)(offset_x * FRACUNIT), (INT64)(offset_y * FRACUNIT), pl->viewangle, pl->plangle);
}
else
R_SetSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz, xoff, yoff, pl->viewangle, pl->plangle);
diff --git a/src/r_plane.h b/src/r_plane.h
index 69620f25e07cadefee8242f23ad3a26a57ffbc9d..cd947750119b8446e0683bd4d62ae7b88fa9c1a7 100644
--- a/src/r_plane.h
+++ b/src/r_plane.h
@@ -48,7 +48,7 @@ typedef struct visplane_s
UINT16 padbottomstart, bottom[MAXVIDWIDTH], padbottomend;
INT32 high, low; // R_PlaneBounds should set these.
- fixed_t xoffs, yoffs; // Scrolling flats.
+ INT64 xoffs, yoffs; // Scrolling flats.
fixed_t xscale, yscale;
sector_t *sector;
@@ -85,7 +85,7 @@ void R_DrawSinglePlane(visplane_t *pl);
// Calculates the slope vectors needed for tilted span drawing.
void R_SetSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle);
-void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle);
+void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, INT64 xoff, INT64 yoff, angle_t angle, angle_t plangle);
typedef struct planemgr_s
{
diff --git a/src/r_splats.c b/src/r_splats.c
index 813c4b2430b53941c449450c9b5926e2e922ec80..ce35a35b4c3ff24d1045a170a67d421310f837af 100644
--- a/src/r_splats.c
+++ b/src/r_splats.c
@@ -381,7 +381,7 @@ static void R_RasterizeFloorSplat(floorsplat_t *pSplat, vector2_t *verts, visspr
if (pSplat->slope)
{
- R_SetScaledSlopePlane(pSplat->slope, vis->viewpoint.x, vis->viewpoint.y, vis->viewpoint.z, pSplat->xscale, pSplat->yscale, -pSplat->verts[0].x, pSplat->verts[0].y, vis->viewpoint.angle, pSplat->angle);
+ R_SetScaledSlopePlane(pSplat->slope, vis->viewpoint.x, vis->viewpoint.y, vis->viewpoint.z, (INT64)pSplat->xscale, (INT64)pSplat->yscale, -pSplat->verts[0].x, pSplat->verts[0].y, vis->viewpoint.angle, pSplat->angle);
}
else if (!ds_solidcolor)
{