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59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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//
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// This file has been modified from Ken Silverman's original release
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// by Jonathon Fowler (jf@jonof.id.au)
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// by the EDuke32 team (development@voidpoint.com)
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#include "compat.h"
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#include "build.h"
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#include "baselayer.h"
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#include "engine_priv.h"
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#include "cache1d.h"
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#include "lz4.h"
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#include "crc32_.h"
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#include "vfs.h"
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//
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// copytilepiece
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//
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void tileCopySection(int32_t tilenume1, int32_t sx1, int32_t sy1, int32_t xsiz, int32_t ysiz,
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int32_t tilenume2, int32_t sx2, int32_t sy2)
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{
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int32_t xsiz1, ysiz1, xsiz2, ysiz2, i, j, x1, y1, x2, y2;
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xsiz1 = tilesiz[tilenume1].x; ysiz1 = tilesiz[tilenume1].y;
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xsiz2 = tilesiz[tilenume2].x; ysiz2 = tilesiz[tilenume2].y;
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if ((xsiz1 > 0) && (ysiz1 > 0) && (xsiz2 > 0) && (ysiz2 > 0))
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{
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tileLoad(tilenume1);
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if (tileData(tilenume2) == 0) return; // Error: Destination is not writable.
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x1 = sx1;
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for (i=0; i<xsiz; i++)
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{
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y1 = sy1;
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for (j=0; j<ysiz; j++)
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{
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x2 = sx2+i;
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y2 = sy2+j;
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if ((x2 >= 0) && (y2 >= 0) && (x2 < xsiz2) && (y2 < ysiz2))
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{
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auto ptr1 = tilePtr(tilenume1) + x1 * ysiz1 + y1;
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auto ptr2 = tileData(tilenume2) + x2 * ysiz2 + y2;
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auto dat = *ptr1;
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if (dat != 255)
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*ptr2 = *ptr1;
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}
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y1++; if (y1 >= ysiz1) y1 = 0;
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}
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x1++; if (x1 >= xsiz1) x1 = 0;
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}
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}
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tileInvalidate(tilenume2, -1, -1);
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}
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