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- GetWallSpritePosition also benefits from using .dot

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This commit is contained in:
Christoph Oelckers 2022-10-04 18:50:15 +02:00
parent f1baf5c69c
commit 3577b53c4d
1 changed files with 3 additions and 6 deletions
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9
source/core/gamefuncs.cpp
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@ -227,16 +227,13 @@ void GetWallSpritePosition(const spritetypebase* spr, const DVector2& pos, DVect
xoffset = tex->GetDisplayLeftOffset() + spr->xoffset;
}
double x = spr->angle.Sin() * spr->xrepeat * REPEAT_SCALE;
double y = -spr->angle.Cos() * spr->xrepeat * REPEAT_SCALE;
auto p = spr->angle.ToVector().Rotated90CW() * spr->xrepeat * REPEAT_SCALE;
if (spr->cstat & CSTAT_SPRITE_XFLIP) xoffset = -xoffset;
double origin = (width * 0.5) + xoffset;
out[0].X = pos.X - x * origin;
out[0].Y = pos.Y - y * origin;
out[1].X = out[0].X + x * width;
out[1].Y = out[0].Y + y * width;
out[0] = pos - p * origin;
out[1] = out[0] + p * width;
}