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authorAndrei Karas <akaras@inbox.ru>2011-01-02 01:48:38 +0200
committerAndrei Karas <akaras@inbox.ru>2011-01-02 02:41:24 +0200
commit3eeae12c498d1a4dbe969462d2ba841f77ee3ccb (patch)
treeff8eab35e732bc0749fc11677c8873a7b3a58704 /src/joystick.cpp
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Initial commit.
This code based on mana client http://www.gitorious.org/mana/mana and my private repository.
Diffstat (limited to 'src/joystick.cpp')
-rw-r--r--src/joystick.cpp150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/joystick.cpp b/src/joystick.cpp
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+/*
+ * 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;
+}