kc3-lang/SDL/android-project

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• Hash : 5697089d
  Author :
  Date : 2013-10-20T23:52:02
  

  Fixed bug 2156 - Android: Accelerometer values fed to joystick driver are inverted for the X axis and wrong for Z
  
  Denis Bernard
  
  Background information: http://developer.android.com/reference/android/hardware/SensorEvent.html#values
  
  Steps to reproduce: compile testjoystick.c as an android app (change screen size according to your device). While running the app, also run:
  
  adb logcat -c; adb logcat -s 'SDL:*' 'SDL/APP:*'
  
  When tilting the device left/right, the joystick moves in the opposite direction of what one would expect. Or at least, the behaviour is not consistent with the Y axis.
  
  Also when the device sits on a table (obviously not moving), the Z axis value oscillates between -32000 and +32000 (by overflow):
  
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: 32511
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: 32575
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: 32383
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: -32386
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: -32450
  I/SDL/APP ( 1994): Joystick 0 axis 2 value: -32578
  
  This is caused by the accelerometer yielding a constant value around 9.81 for Z and feeding something like 0.9 to 1.1 to the joystick driver, resulting in the overflow.
  
  Proposed fix in SDLActivity.java (swap X and subtract G from Z reading)
  

• Files

• AndroidManifest.xml
• ant.properties
• build.properties
• build.xml
• default.properties
• jni/
• proguard-project.txt
• project.properties
• res/
• src/

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