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First CVS upload.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@80
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Sjoerd van der Berg 2002-07-27 13:08:48 +00:00
parent 7d1ca9bdd4
commit 42e5d0b779
158 changed files with 42940 additions and 0 deletions
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101
src/hardware/joystick.cpp Normal file
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/*
* Copyright (C) 2002 The DOSBox Team
*
* 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 Library 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.
*/
#include "dosbox.h"
#include "inout.h"
#define RANGE 64
struct JoyStick {
bool enabled;
float xpos,ypos;
Bitu xcount,ycount;
bool button[2];
};
static JoyStick stick[2];
static Bit8u read_p201(Bit32u port) {
/** Format of the byte to be returned:
** | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
** +-------------------------------+
** | | | | | | | |
** Joystick B, Button 2 ---+ | | | | | | +--- Joystick A, X Axis
** Joystick B, Button 1 -------+ | | | | +------- Joystick A, Y Axis
** Joystick A, Button 2 -----------+ | | +----------- Joystick B, X Axis
** Joystick A, Button 1 ---------------+ +--------------- Joystick B, Y Axis
**/
Bit8u ret=0xff;
if (stick[0].enabled) {
if (stick[0].xcount) stick[0].xcount--; else ret&=~1;
if (stick[0].ycount) stick[0].ycount--; else ret&=~2;
if (stick[0].button[0]) ret&=16;
if (stick[0].button[1]) ret&=32;
}
if (stick[1].enabled) {
if (stick[1].xcount) stick[0].xcount--; else ret&=~4;
if (stick[1].ycount) stick[0].ycount--; else ret&=~8;
if (stick[1].button[0]) ret&=64;
if (stick[1].button[1]) ret&=128;
}
return ret;
}
static void write_p201(Bit32u port,Bit8u val) {
if (stick[0].enabled) {
stick[0].xcount=(Bitu)(stick[0].xpos*RANGE+RANGE*2);
stick[0].ycount=(Bitu)(stick[0].ypos*RANGE+RANGE*2);
}
if (stick[1].enabled) {
stick[1].xcount=(Bitu)(stick[1].xpos*RANGE+RANGE*2);
stick[1].ycount=(Bitu)(stick[1].ypos*RANGE+RANGE*2);
}
}
void JOYSTICK_Enable(Bitu which,bool enabled) {
if (which<2) stick[which].enabled=enabled;
}
void JOYSTICK_Button(Bitu which,Bitu num,bool pressed) {
if ((which<2) && (num<2)) stick[which].button[num]=pressed;
}
void JOYSTICK_Move_X(Bitu which,float x) {
if (which<2) {
stick[which].xpos=x;
}
}
void JOYSTICK_Move_Y(Bitu which,float y) {
if (which<2) {
stick[which].ypos=y;
}
}
void JOYSTICK_Init(void) {
IO_RegisterReadHandler(0x201,read_p201,"JOYSTICK");
IO_RegisterWriteHandler(0x201,write_p201,"JOYSTICK");
stick[0].enabled=false;
stick[1].enabled=false;
}