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engine.c: fix shift by negative value in parascan().
git-svn-id: https://svn.eduke32.com/eduke32@2168 1a8010ca-5511-0410-912e-c29ae57300e0
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@ -4243,6 +4243,15 @@ static void parascan(int32_t dax1, int32_t dax2, int32_t sectnum, char dastat, i
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globalhoriz = mulscale16(globalhoriz-(ydimen>>1),dapyscale) + (ydimen>>1);
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k = 11 - (picsiz[globalpicnum]&15) - dapskybits;
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// WGR2 SVN: select new episode after playing wgmicky1 with Polymer
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// (maybe switched to classic earlier).
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// --> rendmode==0, glrendmode==4, we end up with globalpicnum==266,
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// picsiz...==9 and dapskybits==3
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// FIXME ?
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if (k < 0)
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k = 0;
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x = -1;
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for (z=bunchfirst[bunch]; z>=0; z=p2[z])
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