axmol/cocos2dx/platform/win32/CCAccelerometer_win32.cpp

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/****************************************************************************
Copyright (c) 2011 cocos2d-x.org http://cocos2d-x.org
Copyright (c) 2012 Rocco Loscalzo (Wartortle)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCAccelerometer_win32.h"
#include "CCEGLView_win32.h"
#include "CCDirector.h"
#include "ccMacros.h"
namespace
{
double g_accelX=0.0;
double g_accelY=0.0;
double g_accelZ=0.0;
const double g_accelerationStep=0.2f;
const double g_minAcceleration=-1.0f;
const double g_maxAcceleration=1.0f;
template <class T>
T CLAMP( const T val,const T minVal,const T maxVal )
{
CC_ASSERT( minVal<=maxVal );
T result=val;
if ( result<minVal )
result=minVal;
else if ( result>maxVal )
result=maxVal;
CC_ASSERT( minVal<=result && result<=maxVal );
return result;
}
bool handleKeyDown( WPARAM wParam )
{
bool sendUpdate=false;
switch( wParam )
{
case VK_LEFT:
sendUpdate=true;
g_accelX=CLAMP( g_accelX-g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
case VK_RIGHT:
sendUpdate=true;
g_accelX=CLAMP( g_accelX+g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
case VK_UP:
sendUpdate=true;
g_accelY=CLAMP( g_accelY+g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
case VK_DOWN:
sendUpdate=true;
g_accelY=CLAMP( g_accelY-g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
case VK_OEM_COMMA:
sendUpdate=true;
g_accelZ=CLAMP( g_accelZ+g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
case VK_OEM_PERIOD:
sendUpdate=true;
g_accelZ=CLAMP( g_accelZ-g_accelerationStep,g_minAcceleration,g_maxAcceleration );
break;
}
return sendUpdate;
}
bool handleKeyUp( WPARAM wParam )
{
bool sendUpdate=false;
switch( wParam )
{
case VK_LEFT:
case VK_RIGHT:
sendUpdate=true;
g_accelX=0.0;
break;
case VK_UP:
case VK_DOWN:
sendUpdate=true;
g_accelY=0.0;
break;
case VK_OEM_COMMA:
case VK_OEM_PERIOD:
sendUpdate=true;
g_accelZ=0.0;
break;
}
return sendUpdate;
}
void myAccelerometerKeyHook( UINT message,WPARAM wParam,LPARAM lParam )
{
cocos2d::CCAccelerometer *pAccelerometer=cocos2d::CCAccelerometer::sharedAccelerometer();
bool sendUpdate=false;
switch( message )
{
case WM_KEYDOWN:
sendUpdate=handleKeyDown( wParam );
break;
case WM_KEYUP:
sendUpdate=handleKeyUp( wParam );
break;
case WM_CHAR:
// Deliberately empty - all handled through key up and down events
break;
default:
// Not expected to get here!!
CC_ASSERT( false );
break;
}
if ( sendUpdate )
{
const time_t theTime=time(NULL);
const double timestamp=(double)theTime / 100.0;
pAccelerometer->update( g_accelX,g_accelY,g_accelZ,timestamp );
}
}
void resetAccelerometer()
{
g_accelX=0.0;
g_accelY=0.0;
g_accelZ=0.0;
}
}
namespace cocos2d
{
// static members
CCAccelerometer* CCAccelerometer::m_spCCAccelerometer = NULL;
CCAccelerometer::CCAccelerometer() :
m_pAccelDelegate(NULL)
{
}
CCAccelerometer::~CCAccelerometer()
{
if( m_spCCAccelerometer )
{
delete m_spCCAccelerometer ;
m_spCCAccelerometer = NULL;
}
}
// static
CCAccelerometer* CCAccelerometer::sharedAccelerometer()
{
if (m_spCCAccelerometer == NULL)
{
m_spCCAccelerometer = new CCAccelerometer();
}
return m_spCCAccelerometer;
}
void CCAccelerometer::setDelegate(CCAccelerometerDelegate* pDelegate)
{
m_pAccelDelegate = pDelegate;
// Enable/disable the accelerometer.
// Well, there isn't one on Win32 so we don't do anything other than register
// and deregister ourselves from the Windows Key handler.
if (pDelegate)
{
// Register our handler
CCEGLView::sharedOpenGLView().setAccelerometerKeyHook( &myAccelerometerKeyHook );
}
else
{
// De-register our handler
CCEGLView::sharedOpenGLView().setAccelerometerKeyHook( NULL );
resetAccelerometer();
}
}
void CCAccelerometer::update( double x,double y,double z,double timestamp )
{
if (m_pAccelDelegate)
{
m_obAccelerationValue.x = x;
m_obAccelerationValue.y = y;
m_obAccelerationValue.z = z;
m_obAccelerationValue.timestamp = timestamp;
// Handle orientation changes
CCDirector *pDirector=CCDirector::sharedDirector();
const ccDeviceOrientation orientation=pDirector->getDeviceOrientation();
const double tmp=m_obAccelerationValue.x;
switch ( orientation )
{
case kCCDeviceOrientationLandscapeRight:
m_obAccelerationValue.x = -m_obAccelerationValue.y;
m_obAccelerationValue.y = tmp;
break;
case kCCDeviceOrientationLandscapeLeft:
m_obAccelerationValue.x = m_obAccelerationValue.y;
m_obAccelerationValue.y = -tmp;
break;
case kCCDeviceOrientationPortraitUpsideDown:
m_obAccelerationValue.x = -m_obAccelerationValue.y;
m_obAccelerationValue.y = -tmp;
break;
case kCCDeviceOrientationPortrait:
break;
}
// Delegate
m_pAccelDelegate->didAccelerate(&m_obAccelerationValue);
}
}
} // end of namespace cococs2d