gbasys
annotate src/input.c @ 0:875ef6085efc
gbasys mercurial repository
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sun, 04 Mar 2012 04:04:25 +0200 |
| parents | |
| children | 06726f0b8cd3 |
| rev | line source |
|---|---|
| nuclear@0 | 1 /* |
| nuclear@0 | 2 Copyright 2004 John Tsiombikas <nuclear@siggraph.org> |
| nuclear@0 | 3 |
| nuclear@0 | 4 This file is part of libgba, a library for GameBoy Advance development. |
| nuclear@0 | 5 |
| nuclear@0 | 6 This program is free software; you can redistribute it and/or modify |
| nuclear@0 | 7 it under the terms of the GNU General Public License as published by |
| nuclear@0 | 8 the Free Software Foundation; either version 2 of the License, or |
| nuclear@0 | 9 (at your option) any later version. |
| nuclear@0 | 10 |
| nuclear@0 | 11 This program is distributed in the hope that it will be useful, |
| nuclear@0 | 12 but WITHOUT ANY WARRANTY; without even the implied warranty of |
| nuclear@0 | 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| nuclear@0 | 14 GNU General Public License for more details. |
| nuclear@0 | 15 |
| nuclear@0 | 16 You should have received a copy of the GNU General Public License |
| nuclear@0 | 17 along with this program; if not, write to the Free Software |
| nuclear@0 | 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| nuclear@0 | 19 */ |
| nuclear@0 | 20 |
| nuclear@0 | 21 #include "input.h" |
| nuclear@0 | 22 |
| nuclear@0 | 23 volatile unsigned short *reg_key_state = (unsigned short*)0x4000130; |
| nuclear@0 | 24 volatile unsigned short *reg_key_cntl = (unsigned short*)0x4000132; |
| nuclear@0 | 25 |
| nuclear@0 | 26 int get_key_state(int key) { |
| nuclear@0 | 27 return ~(*reg_key_state) & key; |
| nuclear@0 | 28 } |
| nuclear@0 | 29 |
| nuclear@0 | 30 void enable_key_interrupts(int keys) { |
| nuclear@0 | 31 *reg_key_cntl |= (1 << 14) | keys; |
| nuclear@0 | 32 } |
| nuclear@0 | 33 |
| nuclear@0 | 34 void disable_key_interrupts(int keys) { |
| nuclear@0 | 35 if(keys == KEY_ALL) keys |= (1 << 14); |
| nuclear@0 | 36 *reg_key_cntl ^= keys; |
| nuclear@0 | 37 } |