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Use 64-bit x/y in R_GetSlopeZAt

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This commit is contained in:
Jaime Ita Passos 2021-04-28 22:00:20 -03:00
parent 8f47a7e9cc
commit 090f304f33
1 changed files with 5 additions and 5 deletions
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10
src/r_plane.c
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@ -693,13 +693,13 @@ static void R_DrawSkyPlane(visplane_t *pl)
// Returns the height of the sloped plane at (x, y) as a 32.16 fixed_t
static INT64 R_GetSlopeZAt(const pslope_t *slope, fixed_t x, fixed_t y)
{
x = ((INT64)x - (INT64)slope->o.x);
y = ((INT64)y - (INT64)slope->o.y);
INT64 x64 = ((INT64)x - (INT64)slope->o.x);
INT64 y64 = ((INT64)y - (INT64)slope->o.y);
x = (x * (INT64)slope->d.x) / FRACUNIT;
y = (y * (INT64)slope->d.y) / FRACUNIT;
x64 = (x64 * (INT64)slope->d.x) / FRACUNIT;
y64 = (y64 * (INT64)slope->d.y) / FRACUNIT;
return (INT64)slope->o.z + ((x + y) * (INT64)slope->zdelta) / FRACUNIT;
return (INT64)slope->o.z + ((x64 + y64) * (INT64)slope->zdelta) / FRACUNIT;
}
// Sets the texture origin vector of the sloped plane.