124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "dosbox.h"
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#include "inout.h"
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#define RANGE 64
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struct JoyStick {
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bool enabled;
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float xpos,ypos;
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Bitu xcount,ycount;
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bool button[2];
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};
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static JoyStick stick[2];
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static Bit8u read_p201(Bit32u port) {
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/** Format of the byte to be returned:
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** | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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** +-------------------------------+
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** | | | | | | | |
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** Joystick B, Button 2 ---+ | | | | | | +--- Joystick A, X Axis
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** Joystick B, Button 1 -------+ | | | | +------- Joystick A, Y Axis
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** Joystick A, Button 2 -----------+ | | +----------- Joystick B, X Axis
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** Joystick A, Button 1 ---------------+ +--------------- Joystick B, Y Axis
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**/
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Bit8u ret=0xff;
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if (stick[0].enabled) {
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if (stick[0].xcount) stick[0].xcount--; else ret&=~1;
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if (stick[0].ycount) stick[0].ycount--; else ret&=~2;
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if (stick[0].button[0]) ret&=~16;
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if (stick[0].button[1]) ret&=~32;
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}
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if (stick[1].enabled) {
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if (stick[1].xcount) stick[1].xcount--; else ret&=~4;
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if (stick[1].ycount) stick[1].ycount--; else ret&=~8;
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if (stick[1].button[0]) ret&=~64;
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if (stick[1].button[1]) ret&=~128;
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}
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return ret;
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}
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static void write_p201(Bit32u port,Bit8u val) {
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if (stick[0].enabled) {
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stick[0].xcount=(Bitu)((stick[0].xpos*RANGE)+RANGE);
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stick[0].ycount=(Bitu)((stick[0].ypos*RANGE)+RANGE);
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}
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if (stick[1].enabled) {
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stick[1].xcount=(Bitu)((stick[1].xpos*RANGE)+RANGE);
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stick[1].ycount=(Bitu)((stick[1].ypos*RANGE)+RANGE);
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}
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}
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void JOYSTICK_Enable(Bitu which,bool enabled) {
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if (which<2) stick[which].enabled=enabled;
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}
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void JOYSTICK_Button(Bitu which,Bitu num,bool pressed) {
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if ((which<2) && (num<2)) stick[which].button[num]=pressed;
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}
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void JOYSTICK_Move_X(Bitu which,float x) {
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if (which<2) {
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stick[which].xpos=x;
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}
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}
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void JOYSTICK_Move_Y(Bitu which,float y) {
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if (which<2) {
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stick[which].ypos=y;
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}
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}
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bool JOYSTICK_IsEnabled(Bitu which)
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{
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if (which<2) return stick[which].enabled;
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return false;
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};
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bool JOYSTICK_GetButton(Bitu which, Bitu num)
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{
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if ((which<2) && (num<2)) return stick[which].button[num];
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return false;
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}
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float JOYSTICK_GetMove_X(Bitu which)
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{
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if (which<2) return stick[which].xpos;
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return 0.0f;
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}
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float JOYSTICK_GetMove_Y(Bitu which)
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{
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if (which<2) return stick[which].ypos;
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return 0.0f;
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};
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void JOYSTICK_Init(Section* sec) {
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IO_RegisterReadHandler(0x201,read_p201,"JOYSTICK");
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IO_RegisterWriteHandler(0x201,write_p201,"JOYSTICK");
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stick[0].enabled=false;
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stick[1].enabled=false;
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}
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