diff options
Diffstat (limited to 'common/ds81_fader.h')
| -rw-r--r-- | common/ds81_fader.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/common/ds81_fader.h b/common/ds81_fader.h new file mode 100644 index 0000000..195283f --- /dev/null +++ b/common/ds81_fader.h @@ -0,0 +1,31 @@ +/* + ds81 - Nintendo DS ZX81 emulator. + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + $Id$ +*/ +#ifndef DS81_FADER_H +#define DS81_FADER_H + +#define DS81_BOUNCE(col,coli) do \ + { \ + col+=coli; \ + if (col==0 || col==31) coli=-coli; \ + } while(0) + +#endif /* DS81_FADER_H */ |