From 3eeae12c498d1a4dbe969462d2ba841f77ee3ccb Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 2 Jan 2011 01:48:38 +0200
Subject: Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.
---
 src/joystick.cpp | 150 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 src/joystick.cpp

(limited to 'src/joystick.cpp')

diff --git a/src/joystick.cpp b/src/joystick.cpp
new file mode 100644
index 000000000..8d59d2783
--- /dev/null
+++ b/src/joystick.cpp
@@ -0,0 +1,150 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  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
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "configuration.h"
+#include "joystick.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 = config.getBoolValue("joystickEnabled");
+    mUpTolerance = config.getIntValue("upTolerance");
+    mDownTolerance = config.getIntValue("downTolerance");
+    mLeftTolerance = config.getIntValue("leftTolerance");
+    mRightTolerance = config.getIntValue("rightTolerance");
+
+    for (int i = 0; i < MAX_BUTTONS; i++)
+        mButtons[i] = false;
+}
+
+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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