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86Box/src/win/win_joystick_xinput.cpp
horkthane 3a8b89af63 Assorted Joystick fixes 
Implemented use of DirectInput sliders.  They were previously lumped in with axis and then not read or used at all.

Lots of use of joystick_type == 7 or joystick_type != 7 to detect if the joystick_type was none.  Changed this to a define.

The text to enumerate the types of joysticks was contained in a numbered LPARAM sheet.  Switched to using the name listed in the joystick struct.

Joysticks with more than 32 buttons would overflow the plat_joystick_state button array.  Added overflow checks.

Added a 4 axis 4 button joystick type that Win98 can pick up as a generic 4 axis 4 button controller.
2020-01-16 19:23:54 -05:00

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Xinput joystick interface.
*
* Version: @(#)win_joystick_xinput.cpp 1.0.0 2019/3/19
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* GH Cao, <driver1998.ms@outlook.com>
*
* Copyright 2008-2018 Sarah Walker.
* Copyright 2016-2018 Miran Grca.
* Copyright 2019 GH Cao.
*/
#include <Xinput.h>
#include <math.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#define HAVE_STDARG_H
#include "../86box.h"
#include "../device.h"
#include "../plat.h"
#include "../game/gameport.h"
#include "win.h"
#define XINPUT_MAX_JOYSTICKS 4
#define XINPUT_NAME "Xinput compatiable controller"
#define XINPUT_NAME_LX "Left Stick X"
#define XINPUT_NAME_LY "Left Stick Y"
#define XINPUT_NAME_RX "Right Stick X"
#define XINPUT_NAME_RY "Right Stick Y"
#define XINPUT_NAME_DPAD_X "D-pad X"
#define XINPUT_NAME_DPAD_Y "D-pad Y"
#define XINPUT_NAME_LB "LB"
#define XINPUT_NAME_RB "RB"
#define XINPUT_NAME_LT "LT"
#define XINPUT_NAME_RT "RT"
#define XINPUT_NAME_A "A"
#define XINPUT_NAME_B "B"
#define XINPUT_NAME_X "X"
#define XINPUT_NAME_Y "Y"
#define XINPUT_NAME_BACK "Back/View"
#define XINPUT_NAME_START "Start/Menu"
#define XINPUT_NAME_LS "Left Stick"
#define XINPUT_NAME_RS "Right Stick"
#ifdef ENABLE_JOYSTICK_LOG
int joystick_do_log = ENABLE_JOYSTICK_LOG;
static void
joystick_log(const char *fmt, ...)
{
va_list ap;
if (joystick_do_log) {
va_start(ap, fmt);
pclog_ex(fmt, ap);
va_end(ap);
}
}
#else
#define joystick_log(fmt, ...)
#endif
plat_joystick_t plat_joystick_state[MAX_PLAT_JOYSTICKS];
joystick_t joystick_state[MAX_JOYSTICKS];
int joysticks_present = 0;
XINPUT_STATE controllers[XINPUT_MAX_JOYSTICKS];
void joystick_init()
{
int c;
atexit(joystick_close);
joysticks_present = 0;
memset(controllers, 0, sizeof(XINPUT_STATE) * XINPUT_MAX_JOYSTICKS);
for (c=0; c<XINPUT_MAX_JOYSTICKS; c++) {
int value = XInputGetState(c, &controllers[c]);
if (value != ERROR_SUCCESS) continue;
memcpy(plat_joystick_state[c].name, XINPUT_NAME, sizeof(XINPUT_NAME));
plat_joystick_state[c].nr_axes = 8;
/* analog stick */
memcpy(plat_joystick_state[c].axis[0].name, XINPUT_NAME_LX, sizeof(XINPUT_NAME_LX));
plat_joystick_state[c].axis[0].id = 0; /* X axis */
memcpy(plat_joystick_state[c].axis[1].name, XINPUT_NAME_LY, sizeof(XINPUT_NAME_LY));
plat_joystick_state[c].axis[1].id = 1; /* Y axis */
memcpy(plat_joystick_state[c].axis[2].name, XINPUT_NAME_RX, sizeof(XINPUT_NAME_RX));
plat_joystick_state[c].axis[2].id = 3; /* RX axis */
memcpy(plat_joystick_state[c].axis[3].name, XINPUT_NAME_RY, sizeof(XINPUT_NAME_RY));
plat_joystick_state[c].axis[3].id = 4; /* RY axis */
/* d-pad, assigned to Z and RZ */
memcpy(plat_joystick_state[c].axis[4].name, XINPUT_NAME_DPAD_X, sizeof(XINPUT_NAME_DPAD_X));
plat_joystick_state[c].axis[4].id = 2;
memcpy(plat_joystick_state[c].axis[5].name, XINPUT_NAME_DPAD_Y, sizeof(XINPUT_NAME_DPAD_Y));
plat_joystick_state[c].axis[5].id = 5;
/* Analog trigger */
memcpy(plat_joystick_state[c].axis[6].name, XINPUT_NAME_LT, sizeof(XINPUT_NAME_LT));
plat_joystick_state[c].axis[6].id = 6;
memcpy(plat_joystick_state[c].axis[7].name, XINPUT_NAME_RT, sizeof(XINPUT_NAME_RT));
plat_joystick_state[c].axis[7].id = 7;
plat_joystick_state[c].nr_buttons = 12;
memcpy(plat_joystick_state[c].button[0].name, XINPUT_NAME_A, sizeof(XINPUT_NAME_A));
memcpy(plat_joystick_state[c].button[1].name, XINPUT_NAME_B, sizeof(XINPUT_NAME_B));
memcpy(plat_joystick_state[c].button[2].name, XINPUT_NAME_X, sizeof(XINPUT_NAME_X));
memcpy(plat_joystick_state[c].button[3].name, XINPUT_NAME_Y, sizeof(XINPUT_NAME_Y));
memcpy(plat_joystick_state[c].button[4].name, XINPUT_NAME_LB, sizeof(XINPUT_NAME_LB));
memcpy(plat_joystick_state[c].button[5].name, XINPUT_NAME_RB, sizeof(XINPUT_NAME_RB));
memcpy(plat_joystick_state[c].button[6].name, XINPUT_NAME_LT, sizeof(XINPUT_NAME_LT));
memcpy(plat_joystick_state[c].button[7].name, XINPUT_NAME_RT, sizeof(XINPUT_NAME_RT));
memcpy(plat_joystick_state[c].button[8].name, XINPUT_NAME_BACK, sizeof(XINPUT_NAME_BACK));
memcpy(plat_joystick_state[c].button[9].name, XINPUT_NAME_START, sizeof(XINPUT_NAME_START));
memcpy(plat_joystick_state[c].button[10].name, XINPUT_NAME_LS, sizeof(XINPUT_NAME_LS));
memcpy(plat_joystick_state[c].button[11].name, XINPUT_NAME_RS, sizeof(XINPUT_NAME_RS));
plat_joystick_state[c].nr_povs = 0;
joysticks_present++;
}
joystick_log("joystick_init: joysticks_present=%i\n", joysticks_present);
}
void joystick_close()
{
}
void joystick_poll(void)
{
for (int c=0; c<joysticks_present; c++) {
int value = XInputGetState(c, &controllers[c]);
if (value != ERROR_SUCCESS) continue;
plat_joystick_state[c].a[0] = controllers[c].Gamepad.sThumbLX;
plat_joystick_state[c].a[1] = - controllers[c].Gamepad.sThumbLY;
plat_joystick_state[c].a[3] = controllers[c].Gamepad.sThumbRX;
plat_joystick_state[c].a[4] = - controllers[c].Gamepad.sThumbRY;
plat_joystick_state[c].a[6] = (double)controllers[c].Gamepad.bLeftTrigger / 255 * 32767;
plat_joystick_state[c].a[7] = (double)controllers[c].Gamepad.bRightTrigger / 255 * 32767;
plat_joystick_state[c].b[0] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_A) ? 128 : 0;
plat_joystick_state[c].b[1] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_B) ? 128 : 0;
plat_joystick_state[c].b[2] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_X) ? 128 : 0;
plat_joystick_state[c].b[3] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_Y) ? 128 : 0;
plat_joystick_state[c].b[4] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER) ? 128 : 0;
plat_joystick_state[c].b[5] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER) ? 128 : 0;
plat_joystick_state[c].b[6] = (controllers[c].Gamepad.bLeftTrigger > 127) ? 128 : 0;
plat_joystick_state[c].b[7] = (controllers[c].Gamepad.bRightTrigger > 127) ? 128 : 0;
plat_joystick_state[c].b[8] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_BACK) ? 128 : 0;
plat_joystick_state[c].b[9] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_START) ? 128 : 0;
plat_joystick_state[c].b[10] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB) ? 128 : 0;
plat_joystick_state[c].b[11] = (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB) ? 128 : 0;
int dpad_x = 0, dpad_y = 0;
if (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP)
dpad_y-=32767;
if (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN)
dpad_y+=32767;
if (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT)
dpad_x-=32767;
if (controllers[c].Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT)
dpad_x+=32767;
plat_joystick_state[c].a[2] = dpad_x;
plat_joystick_state[c].a[5] = dpad_y;
for (int a=0; a<8; a++) {
if (plat_joystick_state[c].a[a] == -32768)
plat_joystick_state[c].a[a] = -32767;
if (plat_joystick_state[c].a[a] == 32768)
plat_joystick_state[c].a[a] = 32767;
}
}
}
static int joystick_get_axis(int joystick_nr, int mapping)
{
if (mapping & POV_X)
{
int pov = plat_joystick_state[joystick_nr].p[mapping & 3];
if (LOWORD(pov) == 0xFFFF)
return 0;
else
return sin((2*M_PI * (double)pov) / 36000.0) * 32767;
}
else if (mapping & POV_Y)
{
int pov = plat_joystick_state[joystick_nr].p[mapping & 3];
if (LOWORD(pov) == 0xFFFF)
return 0;
else
return -cos((2*M_PI * (double)pov) / 36000.0) * 32767;
}
else
return plat_joystick_state[joystick_nr].a[plat_joystick_state[joystick_nr].axis[mapping].id];
}
void joystick_process(void)
{
int c, d;
if (joystick_type == JOYSTICK_TYPE_NONE) return;
joystick_poll();
for (c = 0; c < joystick_get_max_joysticks(joystick_type); c++)
{
if (joystick_state[c].plat_joystick_nr)
{
int joystick_nr = joystick_state[c].plat_joystick_nr - 1;
for (d = 0; d < joystick_get_axis_count(joystick_type); d++)
joystick_state[c].axis[d] = joystick_get_axis(joystick_nr, joystick_state[c].axis_mapping[d]);
for (d = 0; d < joystick_get_button_count(joystick_type); d++)
joystick_state[c].button[d] = plat_joystick_state[joystick_nr].b[joystick_state[c].button_mapping[d]];
for (d = 0; d < joystick_get_pov_count(joystick_type); d++)
{
int x, y;
double angle, magnitude;
x = joystick_get_axis(joystick_nr, joystick_state[c].pov_mapping[d][0]);
y = joystick_get_axis(joystick_nr, joystick_state[c].pov_mapping[d][1]);
angle = (atan2((double)y, (double)x) * 360.0) / (2*M_PI);
magnitude = sqrt((double)x*(double)x + (double)y*(double)y);
if (magnitude < 16384)
joystick_state[c].pov[d] = -1;
else
joystick_state[c].pov[d] = ((int)angle + 90 + 360) % 360;
}
}
else
{
for (d = 0; d < joystick_get_axis_count(joystick_type); d++)
joystick_state[c].axis[d] = 0;
for (d = 0; d < joystick_get_button_count(joystick_type); d++)
joystick_state[c].button[d] = 0;
for (d = 0; d < joystick_get_pov_count(joystick_type); d++)
joystick_state[c].pov[d] = -1;
}
}
}
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