blender/source/gameengine/GameLogic/Joystick/SCA_Joystick.cpp

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
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*
* 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.
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*
* 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,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): snailrose.
*
* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file gameengine/GameLogic/Joystick/SCA_Joystick.cpp
* \ingroup gamelogic
*/
#ifdef WITH_SDL
# include <SDL.h>
#endif
#include <stdio.h>
#include <stdlib.h>
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#include "SCA_Joystick.h"
#include "SCA_JoystickPrivate.h"
SCA_Joystick::SCA_Joystick(short int index)
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:
m_joyindex(index),
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m_prec(3200),
m_axismax(-1),
m_buttonmax(-1),
m_hatmax(-1),
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m_isinit(0),
m_istrig_axis(0),
m_istrig_button(0),
m_istrig_hat(0)
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{
for(int i=0; i<JOYAXIS_MAX; i++)
m_axis_array[i]= 0;
for(int i=0; i<JOYHAT_MAX; i++)
m_hat_array[i]= 0;
#ifdef WITH_SDL
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m_private = new PrivateData();
#endif
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}
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SCA_Joystick::~SCA_Joystick()
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{
#ifdef WITH_SDL
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delete m_private;
#endif
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}
SCA_Joystick *SCA_Joystick::m_instance[JOYINDEX_MAX];
int SCA_Joystick::m_joynum = 0;
int SCA_Joystick::m_refCount = 0;
SCA_Joystick *SCA_Joystick::GetInstance( short int joyindex )
{
#ifndef WITH_SDL
return NULL;
#else /* WITH_SDL */
if (joyindex < 0 || joyindex >= JOYINDEX_MAX) {
echo("Error-invalid joystick index: " << joyindex);
return NULL;
}
if (m_refCount == 0)
{
int i;
// The video subsystem is required for joystick input to work. However,
// when GHOST is running under SDL, video is initialised elsewhere.
// Do this once only.
# ifdef WITH_GHOST_SDL
if(SDL_InitSubSystem(SDL_INIT_JOYSTICK) == -1 ){
# else
if(SDL_InitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_VIDEO) == -1 ){
# endif
echo("Error-Initializing-SDL: " << SDL_GetError());
return NULL;
}
m_joynum = SDL_NumJoysticks();
for (i=0; i<JOYINDEX_MAX; i++) {
m_instance[i] = new SCA_Joystick(i);
m_instance[i]->CreateJoystickDevice();
}
m_refCount = 1;
}
else
{
m_refCount++;
}
return m_instance[joyindex];
#endif /* WITH_SDL */
}
void SCA_Joystick::ReleaseInstance()
{
if (--m_refCount == 0)
{
#ifdef WITH_SDL
int i;
for (i=0; i<JOYINDEX_MAX; i++) {
if (m_instance[i]) {
m_instance[i]->DestroyJoystickDevice();
delete m_instance[i];
}
m_instance[i]= NULL;
}
// The video subsystem is required for joystick input to work. However,
// when GHOST is running under SDL, video is freed elsewhere.
// Do this once only.
# ifdef WITH_GHOST_SDL
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
# else
SDL_QuitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_VIDEO);
# endif
#endif /* WITH_SDL */
}
}
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void SCA_Joystick::cSetPrecision(int val)
{
m_prec = val;
}
bool SCA_Joystick::aAxisPairIsPositive(int axis)
{
return (pAxisTest(axis) > m_prec) ? true:false;
}
bool SCA_Joystick::aAxisPairDirectionIsPositive(int axis, int dir)
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{
int res;
if (dir==JOYAXIS_UP || dir==JOYAXIS_DOWN)
res = pGetAxis(axis, 1);
else /* JOYAXIS_LEFT || JOYAXIS_RIGHT */
res = pGetAxis(axis, 0);
if (dir==JOYAXIS_DOWN || dir==JOYAXIS_RIGHT)
return (res > m_prec) ? true : false;
else /* JOYAXIS_UP || JOYAXIS_LEFT */
return (res < -m_prec) ? true : false;
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}
bool SCA_Joystick::aAxisIsPositive(int axis_single)
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{
return abs(m_axis_array[axis_single]) > m_prec ? true:false;
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}
bool SCA_Joystick::aAnyButtonPressIsPositive(void)
{
#ifdef WITH_SDL
/* this is needed for the "all events" option
* so we know if there are no buttons pressed */
for (int i=0; i<m_buttonmax; i++)
if (SDL_JoystickGetButton(m_private->m_joystick, i))
return true;
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#endif
return false;
}
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bool SCA_Joystick::aButtonPressIsPositive(int button)
{
#ifndef WITH_SDL
return false;
#else
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bool result;
SDL_JoystickGetButton(m_private->m_joystick, button)? result = true:result = false;
return result;
#endif
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}
bool SCA_Joystick::aButtonReleaseIsPositive(int button)
{
#ifndef WITH_SDL
return false;
#else
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bool result;
SDL_JoystickGetButton(m_private->m_joystick, button)? result = false : result = true;
return result;
#endif
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}
bool SCA_Joystick::aHatIsPositive(int hatnum, int dir)
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{
return (GetHat(hatnum)==dir) ? true : false;
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}
int SCA_Joystick::GetNumberOfAxes()
{
return m_axismax;
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}
int SCA_Joystick::GetNumberOfButtons()
{
return m_buttonmax;
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}
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int SCA_Joystick::GetNumberOfHats()
{
return m_hatmax;
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}
bool SCA_Joystick::CreateJoystickDevice(void)
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{
#ifndef WITH_SDL
m_isinit = true;
m_axismax = m_buttonmax = m_hatmax = 0;
return false;
#else /* WITH_SDL */
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if(m_isinit == false){
if (m_joyindex>=m_joynum) {
// don't print a message, because this is done anyway
//echo("Joystick-Error: " << SDL_NumJoysticks() << " avaiable joystick(s)");
// Need this so python args can return empty lists
m_axismax = m_buttonmax = m_hatmax = 0;
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return false;
}
m_private->m_joystick = SDL_JoystickOpen(m_joyindex);
SDL_JoystickEventState(SDL_ENABLE);
m_isinit = true;
echo("Joystick " << m_joyindex << " initialized");
/* must run after being initialized */
m_axismax = SDL_JoystickNumAxes(m_private->m_joystick);
m_buttonmax = SDL_JoystickNumButtons(m_private->m_joystick);
m_hatmax = SDL_JoystickNumHats(m_private->m_joystick);
if (m_axismax > JOYAXIS_MAX) m_axismax= JOYAXIS_MAX; /* very unlikely */
else if (m_axismax < 0) m_axismax = 0;
if (m_hatmax > JOYHAT_MAX) m_hatmax= JOYHAT_MAX; /* very unlikely */
else if(m_hatmax<0) m_hatmax= 0;
if(m_buttonmax<0) m_buttonmax= 0;
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}
return true;
#endif /* WITH_SDL */
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}
void SCA_Joystick::DestroyJoystickDevice(void)
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{
#ifdef WITH_SDL
if (m_isinit){
if(SDL_JoystickOpened(m_joyindex)){
echo("Closing-joystick " << m_joyindex);
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SDL_JoystickClose(m_private->m_joystick);
}
m_isinit = false;
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}
#endif /* WITH_SDL */
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}
int SCA_Joystick::Connected(void)
{
#ifdef WITH_SDL
if (m_isinit && SDL_JoystickOpened(m_joyindex))
return 1;
#endif
return 0;
}
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int SCA_Joystick::pGetAxis(int axisnum, int udlr)
{
#ifdef WITH_SDL
return m_axis_array[(axisnum*2)+udlr];
#endif
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return 0;
}
int SCA_Joystick::pAxisTest(int axisnum)
{
#ifdef WITH_SDL
short i1= m_axis_array[(axisnum*2)];
short i2= m_axis_array[(axisnum*2)+1];
/* long winded way to do
* return MAX2(abs(i1), abs(i2))
* avoid abs from math.h */
if (i1 < 0) i1 = -i1;
if (i2 < 0) i2 = -i2;
if (i1 <i2) return i2;
else return i1;
#else /* WITH_SDL */
return 0;
#endif /* WITH_SDL */
}