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/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
*
* This software is open source and may be redistributed and/or modified under
* the terms of the GNU General Public License (GPL) version 2.0.
* The full license is in LICENSE.txt file included with this distribution,.
*
* This software 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
* include LICENSE.txt for more details.
*/
#include <osgViewer/Viewer>
#include "SDLIntegration.h"
#include <SDL.h>
#include <SDL_events.h>
#include <SDL_joystick.h>
#include <iostream>
SDLIntegration::SDLIntegration()
{
_verbose = false;
// init SDL
if ( SDL_Init(SDL_INIT_JOYSTICK) < 0 )
{
fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
int numJoysticks = SDL_NumJoysticks();
if (_verbose)
{
std::cout<<"number of joysticks "<<numJoysticks<<std::endl;
for(int i=0; i<numJoysticks; ++i)
{
std::cout<<"Joystick name '"<<SDL_JoystickName(i)<<"'"<<std::endl;
}
}
_joystick = numJoysticks>0 ? SDL_JoystickOpen(0) : 0;
_numAxes = _joystick ? SDL_JoystickNumAxes(_joystick) : 0;
_numBalls = _joystick ? SDL_JoystickNumBalls(_joystick) : 0;
_numHats = _joystick ? SDL_JoystickNumHats(_joystick) : 0;
_numButtons = _joystick ? SDL_JoystickNumButtons(_joystick) : 0;
if (_verbose)
{
std::cout<<"numAxes = "<<_numAxes<<std::endl;
std::cout<<"numBalls = "<<_numBalls<<std::endl;
std::cout<<"numHats = "<<_numHats<<std::endl;
std::cout<<"numButtons = "<<_numButtons<<std::endl;
}
addMouseButtonMapping(4, 1); // left
addMouseButtonMapping(5, 3); // right
addMouseButtonMapping(6, 2); // middle
addKeyMapping(10, ' '); // R2
addKeyMapping(0, '1'); // 1
addKeyMapping(1, '2'); // 2
addKeyMapping(2, '3'); // 3
addKeyMapping(4, '4'); // 4
addKeyMapping(7, ' '); // home
addKeyMapping(8, osgGA::GUIEventAdapter::KEY_Page_Up); // Start
addKeyMapping(9, osgGA::GUIEventAdapter::KEY_Page_Down); // Start
addKeyMapping(10, osgGA::GUIEventAdapter::KEY_Home); // Start
capture(_axisValues, _buttonValues);
}
SDLIntegration::~SDLIntegration()
{
}
void SDLIntegration::capture(ValueList& axisValues, ValueList& buttonValues) const
{
if (_joystick)
{
SDL_JoystickUpdate();
axisValues.resize(_numAxes);
for(int ai=0; ai<_numAxes; ++ai)
{
axisValues[ai] = SDL_JoystickGetAxis(_joystick, ai);
}
buttonValues.resize(_numButtons);
for(int bi=0; bi<_numButtons; ++bi)
{
buttonValues[bi] = SDL_JoystickGetButton(_joystick, bi);
}
}
}
void SDLIntegration::update(osgViewer::Viewer& viewer)
{
if (_joystick)
{
ValueList newAxisValues;
ValueList newButtonValues;
capture(newAxisValues, newButtonValues);
unsigned int mouseXaxis = 0;
unsigned int mouseYaxis = 1;
float prev_mx = (float)_axisValues[mouseXaxis]/32767.0f;
float prev_my = -(float)_axisValues[mouseYaxis]/32767.0f;
float mx = (float)newAxisValues[mouseXaxis]/32767.0f;
float my = -(float)newAxisValues[mouseYaxis]/32767.0f;
osgGA::EventQueue* eq = viewer.getEventQueue();
double time = eq ? eq->getTime() : 0.0;
osgGA::GUIEventAdapter* previous_event = eq->getCurrentEventState();
float projected_mx = previous_event->getXmin() + (mx+1.0)*0.5*(previous_event->getXmax()-previous_event->getXmin());
float projected_my = previous_event->getYmin() + (my+1.0)*0.5*(previous_event->getYmax()-previous_event->getYmin());
if (mx!=prev_mx || my!=prev_my)
{
eq->mouseMotion(projected_mx, projected_my, time);
}
if (_verbose)
{
for(int ai=0; ai<_numAxes; ++ai)
{
if (newAxisValues[ai]!=_axisValues[ai])
{
std::cout<<"axis "<<ai<<" moved to "<<newAxisValues[ai]<<std::endl;
}
}
}
for(int bi=0; bi<_numButtons; ++bi)
{
if (newButtonValues[bi]!=_buttonValues[bi])
{
if (_verbose)
{
std::cout<<"button "<<bi<<" changed to "<<newButtonValues[bi]<<std::endl;
}
int key = getKeyMapping(bi);
int mouseButton = getMouseButtonMapping(bi);
if (mouseButton>0)
{
if (newButtonValues[bi]==0) eq->mouseButtonRelease(projected_mx,projected_my,mouseButton,time);
else eq->mouseButtonPress(projected_mx,projected_my,mouseButton,time);
}
else if (key>0)
{
if (newButtonValues[bi]==0) eq->keyRelease(key,time);
else eq->keyPress(key,time);
}
}
}
_axisValues.swap(newAxisValues);
_buttonValues.swap(newButtonValues);
}
}
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