pcsx2/plugins/onepad/joystick.cpp

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/* OnePAD - author: arcum42(@gmail.com)
* Copyright (C) 2009
*
* Based on ZeroPAD, author zerofrog@gmail.com
* Copyright (C) 2006-2007
*
* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "joystick.h"
//////////////////////////
// Joystick definitions //
//////////////////////////
vector<JoystickInfo*> s_vjoysticks;
static u32 s_bSDLInit = false;
void JoystickInfo::UpdateReleaseState()
{
vector<JoystickInfo*>::iterator itjoy = s_vjoysticks.begin();
SDL_JoystickUpdate();
// Save everything in the vector s_vjoysticks.
while (itjoy != s_vjoysticks.end())
{
(*itjoy)->SaveState();
itjoy++;
}
}
bool JoystickIdWithinBounds(int joyid)
{
return ((joyid >= 0) && (joyid < (int)s_vjoysticks.size()));
}
// opens handles to all possible joysticks
void JoystickInfo::EnumerateJoysticks(vector<JoystickInfo*>& vjoysticks)
{
if (!s_bSDLInit)
{
#if SDL_MAJOR_VERSION >= 2
// Tell SDL to catch event even if the windows isn't focussed
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
// SDL in 3rdparty wrap X11 call. In order to get x11 symbols loaded
// video must be loaded too.
// Example of X11 symbol are XAutoRepeatOn/XAutoRepeatOff
if (SDL_Init(SDL_INIT_JOYSTICK|SDL_INIT_VIDEO|SDL_INIT_HAPTIC|SDL_INIT_GAMECONTROLLER|SDL_INIT_EVENTS) < 0) return;
#else
if (SDL_Init(SDL_INIT_JOYSTICK) < 0) return;
#endif
SDL_JoystickEventState(SDL_QUERY);
s_bSDLInit = true;
}
vector<JoystickInfo*>::iterator it = vjoysticks.begin();
// Delete everything in the vector vjoysticks.
while (it != vjoysticks.end())
{
delete *it;
it ++;
}
vjoysticks.resize(SDL_NumJoysticks());
for (int i = 0; i < (int)vjoysticks.size(); ++i)
{
vjoysticks[i] = new JoystickInfo();
vjoysticks[i]->Init(i);
}
}
void JoystickInfo::InitHapticEffect()
{
#if SDL_MAJOR_VERSION >= 2
if (haptic == NULL) return;
#if 0
additional field of the effect
/* Trigger */
Uint16 button; /**< Button that triggers the effect. */
Uint16 interval; /**< How soon it can be triggered again after button. */
// periodic parameter
Sint16 offset; /**< Mean value of the wave. */
Uint16 phase; /**< Horizontal shift given by hundredth of a cycle. */
#endif
/*******************************************************************/
/* Effect big & small */
/*******************************************************************/
for (int new_effect = 0; new_effect < 2 ; new_effect++) {
// Direction of the effect SDL_HapticDirection
haptic_effect_data[new_effect].periodic.direction.type = SDL_HAPTIC_POLAR; // Polar coordinates
haptic_effect_data[new_effect].periodic.direction.dir[0] = 18000; // Force comes from south
// periodic parameter
haptic_effect_data[new_effect].periodic.period = 20; // 20 ms
haptic_effect_data[new_effect].periodic.magnitude = 2000; // 2000/32767 strength
// Replay
haptic_effect_data[new_effect].periodic.length = 60; // 60 ms long
haptic_effect_data[new_effect].periodic.delay = 0; // start 0 second after the upload
// enveloppe
haptic_effect_data[new_effect].periodic.attack_length = 5;// Takes 5 ms to get max strength
haptic_effect_data[new_effect].periodic.attack_level = 0; // start at 0
haptic_effect_data[new_effect].periodic.fade_length = 5; // Takes 5 ms to fade away
haptic_effect_data[new_effect].periodic.fade_level = 0; // finish at 0
}
/*******************************************************************/
/* Effect small */
/*******************************************************************/
haptic_effect_data[0].type = SDL_HAPTIC_LEFTRIGHT;
/*******************************************************************/
/* Effect big */
/*******************************************************************/
haptic_effect_data[1].type = SDL_HAPTIC_TRIANGLE;
/*******************************************************************/
/* Upload effect to the device */
/*******************************************************************/
for (int i = 0 ; i < 2 ; i++)
haptic_effect_id[i] = SDL_HapticNewEffect(haptic, &haptic_effect_data[i]);
#endif
}
void JoystickInfo::DoHapticEffect(int type, int pad, int force)
{
if (type > 1) return;
if ( !(conf->options & (PADOPTION_FORCEFEEDBACK << 16 * pad)) ) return;
#if SDL_MAJOR_VERSION >= 2
int joyid = conf->get_joyid(pad);
if (!JoystickIdWithinBounds(joyid)) return;
JoystickInfo* pjoy = s_vjoysticks[joyid];
if (pjoy->haptic == NULL) return;
if (pjoy->haptic_effect_id[type] < 0) return;
// FIXME: might need to multiply force
pjoy->haptic_effect_data[type].periodic.magnitude = force * conf->ff_intensity ; // force/32767 strength
// Upload the new effect
SDL_HapticUpdateEffect(pjoy->haptic, pjoy->haptic_effect_id[type], &pjoy->haptic_effect_data[type]);
// run the effect once
SDL_HapticRunEffect( pjoy->haptic, pjoy->haptic_effect_id[type], 1 );
#endif
}
void JoystickInfo::Destroy()
{
if (joy != NULL)
{
#if SDL_MAJOR_VERSION >= 2
// Haptic must be closed before the joystick
if (haptic != NULL) {
SDL_HapticClose(haptic);
haptic = NULL;
}
#endif
#if SDL_MAJOR_VERSION >= 2
if (joy) SDL_JoystickClose(joy);
#else
if (SDL_JoystickOpened(_id)) SDL_JoystickClose(joy);
#endif
joy = NULL;
}
}
bool JoystickInfo::Init(int id)
{
Destroy();
_id = id;
joy = SDL_JoystickOpen(id);
if (joy == NULL)
{
PAD_LOG("failed to open joystick %d\n", id);
return false;
}
numaxes = SDL_JoystickNumAxes(joy);
numbuttons = SDL_JoystickNumButtons(joy);
numhats = SDL_JoystickNumHats(joy);
#if SDL_MAJOR_VERSION >= 2
devname = SDL_JoystickName(joy);
#else
devname = SDL_JoystickName(id);
#endif
vaxisstate.resize(numaxes);
vbuttonstate.resize(numbuttons);
vhatstate.resize(numhats);
// Sixaxis, dualshock3 hack
// Most buttons are actually axes due to analog pressure support. Only the first 4 buttons
// are digital (select, start, l3, r3). To avoid conflict just forget the others.
// Keep the 4 hat buttons too (usb driver). (left pressure does not work with recent kernel). Moreover the pressure
// work sometime on half axis neg others time in fulll axis. So better keep them as button for the moment
u32 found_hack = devname.find(string("PLAYSTATION(R)3"));
if (found_hack != string::npos) {
2015-01-23 22:14:09 +00:00
numbuttons = 4; // (select, start, l3, r3)
// Enable this hack in bluetooth too. It avoid to restart the onepad gui
numbuttons += 4; // the 4 hat buttons
}
#if SDL_MAJOR_VERSION >= 2
if ( haptic == NULL ) {
if (!SDL_JoystickIsHaptic(joy)) {
PAD_LOG("Haptic devices not supported!\n");
} else {
haptic = SDL_HapticOpenFromJoystick(joy);
// upload some default effect
InitHapticEffect();
}
}
#endif
//PAD_LOG("There are %d buttons, %d axises, and %d hats.\n", numbuttons, numaxes, numhats);
return true;
}
void JoystickInfo::SaveState()
{
for (int i = 0; i < numbuttons; ++i)
SetButtonState(i, SDL_JoystickGetButton(joy, i));
for (int i = 0; i < numaxes; ++i)
SetAxisState(i, SDL_JoystickGetAxis(joy, i));
for (int i = 0; i < numhats; ++i)
SetHatState(i, SDL_JoystickGetHat(joy, i));
}
void JoystickInfo::TestForce()
{
}
bool JoystickInfo::PollButtons(u32 &pkey)
{
// MAKE sure to look for changes in the state!!
for (int i = 0; i < GetNumButtons(); ++i)
{
int but = SDL_JoystickGetButton(GetJoy(), i);
if (but != GetButtonState(i))
{
// Pressure sensitive button are detected as both button (digital) and axes (analog). So better
// drop the button to emulate the pressure sensiblity of the ds2 :)
// Trick: detect the release of the button. It avoid all races condition between axes and buttons :)
// If the button support pressure it will be detected as an axis when it is pressed.
if (but) {
SetButtonState(i, but);
return false;
}
pkey = button_to_key(i);
return true;
}
}
return false;
}
bool JoystickInfo::PollAxes(u32 &pkey)
{
for (int i = 0; i < GetNumAxes(); ++i)
{
// Sixaxis, dualshock3 hack
u32 found_hack = devname.find(string("PLAYSTATION(R)3"));
if (found_hack != string::npos) {
// The analog mode of the hat button is quite erratic. Values can be in half- axis
// or full axis... So better keep them as button for the moment -- gregory
if (i >= 8 && i <= 11 && (conf->options & PADOPTION_SIXAXIS_USB))
continue;
// Disable accelerometer
if ((i >= 4 && i <= 6))
continue;
}
s32 value = SDL_JoystickGetAxis(GetJoy(), i);
s32 old_value = GetAxisState(i);
if (abs(value - old_value) < 0x1000)
continue;
if (value != old_value)
{
PAD_LOG("Change in joystick %d: %d.\n", i, value);
// There are several kinds of axes
// Half+: 0 (release) -> 32768
// Half-: 0 (release) -> -32768
// Full (like dualshock 3): -32768 (release) ->32768
const s32 full_axis_ceil = -0x6FFF;
const s32 half_axis_ceil = 0x1FFF;
// Normally, old_value contains the release state so it can be used to detect the types of axis.
bool is_full_axis = (old_value < full_axis_ceil) ? true : false;
if ((!is_full_axis && abs(value) <= half_axis_ceil)
|| (is_full_axis && value <= full_axis_ceil)) // we don't want this
{
continue;
}
if ((!is_full_axis && abs(value) > half_axis_ceil)
|| (is_full_axis && value > full_axis_ceil))
{
bool sign = (value < 0);
pkey = axis_to_key(is_full_axis, sign, i);
return true;
}
}
}
return false;
}
bool JoystickInfo::PollHats(u32 &pkey)
{
for (int i = 0; i < GetNumHats(); ++i)
{
int value = SDL_JoystickGetHat(GetJoy(), i);
if ((value != GetHatState(i)) && (value != SDL_HAT_CENTERED))
{
switch (value)
{
case SDL_HAT_UP:
case SDL_HAT_RIGHT:
case SDL_HAT_DOWN:
case SDL_HAT_LEFT:
pkey = hat_to_key(value, i);
PAD_LOG("Hat Pressed!");
return true;
default:
break;
}
}
}
return false;
}
int JoystickInfo::GetAxisFromKey(int pad, int index)
{
return SDL_JoystickGetAxis(GetJoy(), key_to_axis(pad, index));
}