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Fix wall scroller direction

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This commit is contained in:
Magnus Norddahl 2017-02-14 02:52:41 +01:00
parent 2a71ec89de
commit 5ef8ecce2a
1 changed files with 11 additions and 42 deletions
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53
src/swrenderer/line/r_wallsetup.cpp
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@ -163,31 +163,15 @@ namespace swrenderer
float depthScale = (float)(WallT.InvZstep * viewport->WallTMapScale2); float depthScale = (float)(WallT.InvZstep * viewport->WallTMapScale2);
float depthOrg = (float)(-WallT.UoverZstep * viewport->WallTMapScale2); float depthOrg = (float)(-WallT.UoverZstep * viewport->WallTMapScale2);
if (xrepeat < 0.0f) for (int x = x1; x < x2; x++)
{ {
for (int x = x1; x < x2; x++) float u = uOverZ / invZ;
{
float u = uOverZ / invZ;
UPos[x] = (fixed_t)((xrepeat - u * xrepeat) * FRACUNIT); UPos[x] = (fixed_t)(u * xrepeat * FRACUNIT);
VStep[x] = depthOrg + u * depthScale; VStep[x] = depthOrg + u * depthScale;
uOverZ += uGradient; uOverZ += uGradient;
invZ += zGradient; invZ += zGradient;
}
}
else
{
for (int x = x1; x < x2; x++)
{
float u = uOverZ / invZ;
UPos[x] = (fixed_t)(u * xrepeat * FRACUNIT);
VStep[x] = depthOrg + u * depthScale;
uOverZ += uGradient;
invZ += zGradient;
}
} }
} }
@ -201,29 +185,14 @@ namespace swrenderer
float zGradient = WallT.InvZstep; float zGradient = WallT.InvZstep;
float xrepeat = (float)walxrepeat; float xrepeat = (float)walxrepeat;
if (xrepeat < 0.0f) for (int x = x1; x < x2; x++)
{ {
for (int x = x1; x < x2; x++) float u = uOverZ / invZ * xrepeat;
{
float u = uOverZ / invZ * xrepeat - xrepeat;
UPos[x] = (fixed_t)(u * FRACUNIT); UPos[x] = (fixed_t)(u * FRACUNIT);
uOverZ += uGradient; uOverZ += uGradient;
invZ += zGradient; invZ += zGradient;
}
}
else
{
for (int x = x1; x < x2; x++)
{
float u = uOverZ / invZ * xrepeat;
UPos[x] = (fixed_t)(u * FRACUNIT);
uOverZ += uGradient;
invZ += zGradient;
}
} }
} }
} }