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/*
* The Mana World
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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
* any later version.
*
* The Mana World 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 The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "joystick.h"
#include "configuration.h"
#include "log.h"
#include <cassert>
int Joystick::joystickCount = 0;
void Joystick::init()
{
SDL_InitSubSystem(SDL_INIT_JOYSTICK);
// Have SDL call SDL_JoystickUpdate() automatically
SDL_JoystickEventState(SDL_ENABLE);
joystickCount = SDL_NumJoysticks();
logger->log("%i joysticks/gamepads found", joystickCount);
for (int i = 0; i < joystickCount; i++)
logger->log("- %s", SDL_JoystickName(i));
}
Joystick::Joystick(int no):
mDirection(0),
mCalibrating(false),
mEnabled(false)
{
assert(no < joystickCount);
mJoystick = SDL_JoystickOpen(no);
// TODO Bail out!
if (!mJoystick)
{
logger->log("Couldn't open joystick: %s", SDL_GetError());
return;
}
logger->log("Axes: %i ", SDL_JoystickNumAxes(mJoystick));
logger->log("Balls: %i", SDL_JoystickNumBalls(mJoystick));
logger->log("Hats: %i", SDL_JoystickNumHats(mJoystick));
logger->log("Buttons: %i", SDL_JoystickNumButtons(mJoystick));
mEnabled = (int) config.getValue("joystickEnabled", 0) != 0;
mUpTolerance = (int) config.getValue("upTolerance", 100);
mDownTolerance = (int) config.getValue("downTolerance", 100);
mLeftTolerance = (int) config.getValue("leftTolerance", 100);
mRightTolerance = (int) config.getValue("rightTolerance", 100);
}
Joystick::~Joystick()
{
SDL_JoystickClose(mJoystick);
}
void Joystick::update()
{
mDirection = 0;
// When calibrating, don't bother the outside with our state
if (mCalibrating) {
doCalibration();
return;
};
if (!mEnabled)
return;
// X-Axis
int position = SDL_JoystickGetAxis(mJoystick, 0);
if (position >= mRightTolerance)
mDirection |= RIGHT;
else if (position <= mLeftTolerance)
mDirection |= LEFT;
// Y-Axis
position = SDL_JoystickGetAxis(mJoystick, 1);
if (position <= mUpTolerance)
mDirection |= UP;
else if (position >= mDownTolerance)
mDirection |= DOWN;
// Buttons
for (int i = 0; i < MAX_BUTTONS; i++)
mButtons[i] = (SDL_JoystickGetButton(mJoystick, i) == 1);
}
void Joystick::startCalibration()
{
mUpTolerance = 0;
mDownTolerance = 0;
mLeftTolerance = 0;
mRightTolerance = 0;
mCalibrating = true;
}
void Joystick::doCalibration()
{
// X-Axis
int position = SDL_JoystickGetAxis(mJoystick, 0);
if (position > mRightTolerance)
mRightTolerance = position;
else if (position < mLeftTolerance)
mLeftTolerance = position;
// Y-Axis
position = SDL_JoystickGetAxis(mJoystick, 1);
if (position > mDownTolerance)
mDownTolerance = position;
else if (position < mUpTolerance)
mUpTolerance = position;
}
void Joystick::finishCalibration()
{
config.setValue("leftTolerance", mLeftTolerance);
config.setValue("rightTolerance", mRightTolerance);
config.setValue("upTolerance", mUpTolerance);
config.setValue("downTolerance", mDownTolerance);
mCalibrating = false;
}
bool Joystick::buttonPressed(unsigned char no) const
{
return (mEnabled && no < MAX_BUTTONS) ? mButtons[no] : false;
}
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