Shooter Tutorial

I am working on the shooter demo from the TDN basic tutorial. I am having trouble getting the player ship to shoot missiles. I have put in all the script it needs and have checked ten times to make sure there are no syntax errors but there are none. I have no idea what to do i have added some code in hopes someone my catch what i am doing wrong. I am using a mac with OS X and using beta 2 TGB.


function playerShip::onLevelLoaded(%this, %scenegraph)
{
$pShip = %this;

moveMap.bindCmd(keyboard, "w", "pShipUp();", "pShipUpStop();");
moveMap.bindCmd(keyboard, "s", "pShipDown();", "pShipDownStop();");
moveMap.bindCmd(keyboard, "a", "pShipLeft();", "pShipLeftStop();");
moveMap.bindCmd(keyboard, "d", "pShipRight();", "pShipRightStop();");
moveMap.bindCmd(keyboard, "space", "$pShip.createMissile();", "");
}
function pShipUp()
{
$pShip.moveUp = true;
$pShip.updateMovement();
}

function pShipDown()
{
$pShip.moveDown = true;
$pShip.updateMovement();
}

function pShipLeft()
{
$pShip.moveLeft = true;
$pShip.updateMovement();
}

function pShipRight()
{
$pShip.moveRight = true;
$pShip.updateMovement();
}

function pShipLeftStop()
{
$pShip.moveLeft = false;
$pShip.updateMovement();
}

function pShipRightStop()
{
$pShip.moveRight = false;
$pShip.updateMovement();
}

function pShipUpStop()
{
$pShip.moveUp = false;
$pShip.updateMovement();
}

function pShipDownStop()
{
$pShip.moveDown = false;
$pShip.updateMovement();
}
function playerShip::updateMovement(%this)
{
if(%this.moveLeft)
{
%this.setLinearVelocityX( -$pShip.hSpeed );
}

if(%this.moveRight)
{
%this.setLinearVelocityX( $pShip.hSpeed );
}
if(%this.moveUp)
{
%this.setLinearVelocityY( -$pShip.vSpeed );
}
if(%this.moveDown)
{
%this.setLinearVelocityY( $pShip.vSpeed );
}
if(!%this.moveLeft && !%this.moveRight)
{
%this.setLinearVelocityX( 0 );
}
if(!%this.moveUp && !%this.moveDown)
{
%this.setLinearVelocityY( 0 );
}
}
function playerShip::createMissile(%this)
{
%this.playerMissile = new t2dStaticSprite()
{
scenegraph = %this.scenegraph;
class = playerMissile;
missileSpeed=%this.missileSpeed;
player = %this;
};
%this.playerMissile.fire();
}



and this is the playermissile.cs

function playerMissile::fire(%this)
{
%this.setWorldLimit( kill, "-55.000 -420.000 600.000 40" );
%this.setLinearVelocityX(%this.missileSpeed);
%this.setPosition(%this.player.getPosition());
%this.setImageMap(playerMissileImageMap);
%this.setSize(22, 10);
%this.setCollisionActive( true, true );
%this.setCollisionPhysics(false, false);
%this.setCollisionCallback(true);
}
function playerMissile::onCollision( %srcObj, %dstObj, %srcRef, %dstRef, %time, %normal, %contactCount, %contacts )
{
if(%dstObj.class $= "enemyShip")
{
%srcObj.explode();
%dstObj.explode();
}
}
function playerMissile::explode(%this)
{
%this.safeDelete();
}