iPhone Tilt Recalibration

#1 Hi Dean, I didn't put tilt recalibration in but instead gave the player a sensitivity slider which seemed to solve the only issue I had - somebody said it wasn't sensitive enough.

The variable $GAMECONFIG::accelerometer is the sensitivity value; range is 500-600 (from memory). Default is 550.

//
// iPhone Accelerometer.
////////////////////////
$joyThreshold = 0.05;

// Called when the player tilts the device left/right.
//
// Used to move the player's ship.
function joystickMoveX(%val) {
	if ($gameState != $GAME_STATE_PLAYING) {
		return;
	}
   	if( %val < $joyThreshold && %val > -$joyThreshold ) {
    	%dir = 0;
   	} else {
    	%dir = %val * $GAMECONFIG::accelerometer;      
    }
    $playerShip.setLinearVelocityX(%dir);
}

#2 I have just recently just read iPhone Game Development: Developing 2D & 3D games in Objective-C (Animal Guide), and they have a nice way for doing calibration. I have just implemented it into my game's next update. But I don't think I should post the code because it was one reason I read it.

I use Safari Books Online for all my tech books, and they offer a free trial period so you can read it, and see if it works for you.

If you have any question about adding it to torque I would be able to help you there.

#3 @Scott
Thanks for the code, that helped a lot.

Thanks for the info, much appreciated.

#4 I ended up using the follow code.

The $settings::throttle variable is setup in options, from 0 - 10

function joystickMoveX(%val)
{
   $leftKey = false;
   $riteKey = false;

	if(%val > $settings::throttle)
         $leftKey = true;
	else if(%val < -$settings::throttle)
         $riteKey = true;

	return;
}