TDN Platformer Tutorial

%this.camera = new fxSceneWindow2D() { scenegraph = t2dSceneGraph; };

%this.camera = new fxSceneObject2D() { scenegraph = t2dSceneGraph; };

//-----------------------------------------------------------------------------
// onUpdateScene
// Called by the engine every frame. Again, we just dispatch execution to
// functions that deal with specific objects.
//-----------------------------------------------------------------------------
function fxSceneGraph2D::onUpdateScene(%this)
{
   // We only care about our main scene graph. The editors all have scene
   // graphs of their own, but we don't want to deal with them.
   if (%this != t2dscenegraph.getID())
      return;
      
   // Update the player.
   updatePlayer();

   // Update the camera.
   $camera.update();

   // Reset the run surface variable. If we actually are on a run surface, the
   // onCollision callback will fix this before anything important happens.
   $runSurface = -1;
}

Quote:
All of the movement is done through setting velocities so the engine will handle consistent timing and movement...

new t2dSceneGraph(fred);

function createLevel()
{
   $gravity = 700;
   $spawnPoint = "-20 -30";
   %tileMap = new fxTileMap2D() { scenegraph = t2dscenegraph; };
   %tileMap.loadTileMap("./maps/platformer.tile");
   %layer = %tileMap.getTileLayer(0);
   %layer.setCollisionActive(false, true);
   %layer.setGroup($platformGroup);
   %layer.setLayer($platformLayer);
   %layer.setPosition("0 0");
   $camera.setLimits(%layer.getArea());
   resetPlayer($spawnPoint);
}

%halfWidth = %layer.getWidth() / 2;
%halfHeight = %layer.getHeight() / 2;
%x = %layer.getPositionX();
%y = %layer.getPositionY();
%area = (%x - %halfWidth) SPC (%y - %halfHeight) SPC (%x + %halfWidth) SPC (%y + %halfHeight);
$camera.setLimits(%area);

echo($camera.camera.getCurrentCameraArea());

createCamera();
createLevel();

schedule(0, 0, createCamera);
schedule(0, 1, createLevel);