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      1 /*
      2  The zlib/libpng License
      3 
      4  Copyright (c) 2005-2007 Phillip Castaneda (pjcast -- www.wreckedgames.com)
      5 
      6  This software is provided 'as-is', without any express or implied warranty. In no event will
      7  the authors be held liable for any damages arising from the use of this software.
      8 
      9  Permission is granted to anyone to use this software for any purpose, including commercial
     10  applications, and to alter it and redistribute it freely, subject to the following
     11  restrictions:
     12 
     13  1. The origin of this software must not be misrepresented; you must not claim that
     14  you wrote the original software. If you use this software in a product,
     15  an acknowledgment in the product documentation would be appreciated but is
     16  not required.
     17 
     18  2. Altered source versions must be plainly marked as such, and must not be
     19  misrepresented as being the original software.
     20 
     21  3. This notice may not be removed or altered from any source distribution.
     22  */
     23 #include "iphone/iPhoneAccelerometer.h"
     24 #include "iphone/iPhoneInputManager.h"
     25 
     26 using namespace OIS;
     27 
     28 //-------------------------------------------------------------------//
     29 iPhoneAccelerometer::iPhoneAccelerometer( InputManager* creator, bool buffered )
     30 	: JoyStick(creator->inputSystemName(), buffered, 0, creator)
     31 {
     32     iPhoneInputManager *man = static_cast<iPhoneInputManager*>(mCreator);
     33 
     34     man->_setAccelerometerUsed(true);
     35     [man->_getDelegate() setAccelerometerObject:this];
     36     [[UIAccelerometer sharedAccelerometer] setDelegate:man->_getDelegate()];
     37     mUpdateInterval = 60.0f;
     38 }
     39 
     40 iPhoneAccelerometer::~iPhoneAccelerometer()
     41 {
     42     iPhoneInputManager *man = static_cast<iPhoneInputManager*>(mCreator);
     43 
     44     man->_setAccelerometerUsed(false);
     45     [man->_getDelegate() setAccelerometerObject:nil];
     46 }
     47 
     48 void iPhoneAccelerometer::_initialize()
     49 {
     50 	// Clear old joy state
     51     mState.mVectors.resize(1);
     52 	mState.clear();
     53 	mTempState.clear();
     54 
     55     // Set the update interval
     56     [[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / mUpdateInterval)];
     57 }
     58 
     59 void iPhoneAccelerometer::setBuffered( bool buffered )
     60 {
     61 	mBuffered = buffered;
     62 }
     63 
     64 void iPhoneAccelerometer::didAccelerate(UIAcceleration *acceleration)
     65 {
     66     mTempState.clear();
     67 
     68     mTempState.x = acceleration.x;
     69     mTempState.y = acceleration.y;
     70     mTempState.z = acceleration.z;
     71 }
     72 
     73 void iPhoneAccelerometer::capture()
     74 {
     75     mState.clear();
     76     mState.mVectors[0] = mTempState;
     77 
     78     if(mListener && mBuffered)
     79         mListener->axisMoved(JoyStickEvent(this, mState), 0);
     80 }
     81