262 lines
7.1 KiB
C
262 lines
7.1 KiB
C
/*
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
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* spanning the era between 1981 and 1995.
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*
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* This file is part of the VARCem Project.
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*
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* Implementation of a standard joystick.
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*
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* Version: @(#)joystick_standard.c 1.0.4 2018/03/15
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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* Sarah Walker, <tommowalker@tommowalker.co.uk>
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*
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* Copyright 2016-2018 Miran Grca.
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* Copyright 2008-2018 Sarah Walker.
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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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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:
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*
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* Free Software Foundation, Inc.
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* 59 Temple Place - Suite 330
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* Boston, MA 02111-1307
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* USA.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include "../86box.h"
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#include "../device.h"
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#include "../timer.h"
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#include "gameport.h"
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#include "joystick_standard.h"
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static void *joystick_standard_init(void)
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{
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return NULL;
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}
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static void joystick_standard_close(void *p)
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{
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}
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static uint8_t joystick_standard_read(void *p)
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{
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uint8_t ret = 0xf0;
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if (JOYSTICK_PRESENT(0))
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{
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if (joystick_state[0].button[0])
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ret &= ~0x10;
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if (joystick_state[0].button[1])
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ret &= ~0x20;
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}
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if (JOYSTICK_PRESENT(1))
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{
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if (joystick_state[1].button[0])
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ret &= ~0x40;
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if (joystick_state[1].button[1])
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ret &= ~0x80;
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}
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return ret;
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}
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static uint8_t joystick_standard_read_4button(void *p)
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{
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uint8_t ret = 0xf0;
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if (JOYSTICK_PRESENT(0))
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{
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if (joystick_state[0].button[0])
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ret &= ~0x10;
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if (joystick_state[0].button[1])
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ret &= ~0x20;
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if (joystick_state[0].button[2])
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ret &= ~0x40;
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if (joystick_state[0].button[3])
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ret &= ~0x80;
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}
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return ret;
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}
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static void joystick_standard_write(void *p)
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{
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}
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static int joystick_standard_read_axis(void *p, int axis)
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{
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switch (axis)
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{
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case 0:
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if (!JOYSTICK_PRESENT(0))
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return AXIS_NOT_PRESENT;
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return joystick_state[0].axis[0];
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case 1:
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if (!JOYSTICK_PRESENT(0))
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return AXIS_NOT_PRESENT;
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return joystick_state[0].axis[1];
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case 2:
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if (!JOYSTICK_PRESENT(1))
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return AXIS_NOT_PRESENT;
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return joystick_state[1].axis[0];
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case 3:
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if (!JOYSTICK_PRESENT(1))
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return AXIS_NOT_PRESENT;
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return joystick_state[1].axis[1];
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default:
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return 0;
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}
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}
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static int joystick_standard_read_axis_4button(void *p, int axis)
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{
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if (!JOYSTICK_PRESENT(0))
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return AXIS_NOT_PRESENT;
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switch (axis)
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{
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case 0:
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return joystick_state[0].axis[0];
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case 1:
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return joystick_state[0].axis[1];
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case 2:
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return 0;
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case 3:
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return 0;
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default:
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return 0;
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}
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}
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static int joystick_standard_read_axis_6button(void *p, int axis)
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{
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if (!JOYSTICK_PRESENT(0))
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return AXIS_NOT_PRESENT;
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switch (axis)
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{
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case 0:
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return joystick_state[0].axis[0];
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case 1:
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return joystick_state[0].axis[1];
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case 2:
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return joystick_state[0].button[4] ? -32767 : 32768;
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case 3:
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return joystick_state[0].button[5] ? -32767 : 32768;
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default:
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return 0;
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}
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}
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static int joystick_standard_read_axis_8button(void *p, int axis)
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{
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if (!JOYSTICK_PRESENT(0))
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return AXIS_NOT_PRESENT;
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switch (axis)
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{
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case 0:
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return joystick_state[0].axis[0];
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case 1:
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return joystick_state[0].axis[1];
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case 2:
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if (joystick_state[0].button[4])
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return -32767;
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if (joystick_state[0].button[6])
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return 32768;
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return 0;
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case 3:
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if (joystick_state[0].button[5])
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return -32767;
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if (joystick_state[0].button[7])
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return 32768;
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return 0;
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default:
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return 0;
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}
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}
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static void joystick_standard_a0_over(void *p)
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{
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}
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const joystick_if_t joystick_standard =
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{
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"Standard 2-button joystick(s)",
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joystick_standard_init,
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joystick_standard_close,
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joystick_standard_read,
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joystick_standard_write,
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joystick_standard_read_axis,
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joystick_standard_a0_over,
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2,
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2,
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0,
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2,
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{"X axis", "Y axis"},
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{"Button 1", "Button 2"}
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};
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const joystick_if_t joystick_standard_4button =
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{
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"Standard 4-button joystick",
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joystick_standard_init,
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joystick_standard_close,
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joystick_standard_read_4button,
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joystick_standard_write,
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joystick_standard_read_axis_4button,
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joystick_standard_a0_over,
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2,
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4,
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0,
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1,
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{"X axis", "Y axis"},
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{"Button 1", "Button 2", "Button 3", "Button 4"}
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};
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const joystick_if_t joystick_standard_6button =
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{
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"Standard 6-button joystick",
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joystick_standard_init,
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joystick_standard_close,
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joystick_standard_read_4button,
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joystick_standard_write,
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joystick_standard_read_axis_6button,
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joystick_standard_a0_over,
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2,
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6,
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0,
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1,
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{"X axis", "Y axis"},
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{"Button 1", "Button 2", "Button 3", "Button 4", "Button 5", "Button 6"}
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};
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const joystick_if_t joystick_standard_8button =
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{
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"Standard 8-button joystick",
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joystick_standard_init,
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joystick_standard_close,
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joystick_standard_read_4button,
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joystick_standard_write,
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joystick_standard_read_axis_8button,
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joystick_standard_a0_over,
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2,
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8,
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0,
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1,
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{"X axis", "Y axis"},
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{"Button 1", "Button 2", "Button 3", "Button 4", "Button 5", "Button 6", "Button 7", "Button 8"}
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};
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