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sctoff2xy(): New, factored out of sct_oninit()

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Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
This commit is contained in:
Markus Armbruster 2013-01-27 10:22:03 +01:00
parent f2b1ea3161
commit 0f3134fc15
3 changed files with 10 additions and 4 deletions
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8
src/lib/common/xy.c
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@ -28,7 +28,7 @@
*
* Known contributors to this file:
* Dave Pare, 1989
* Markus Armbruster, 2004-2011
* Markus Armbruster, 2004-2013
*/
#include <config.h>
@ -208,6 +208,12 @@ sctoff(coord x, coord y)
return XYOFFSET(XNORM(x), YNORM(y));
}
void sctoff2xy(coord *x, coord *y, int off)
{
*y = off * 2 / WORLD_X;
*x = off * 2 % WORLD_X + *y % 2;
}
coord
xnorm(coord x)
{