Hi guys, I've two questions about PandaJS and vertical scroll system. 1) can someone explain how to make a sprite that going up is followed by the camera? A typical vertical scroll system. I saw this page: http://www.pandajs.net/docs/classes/game.Camera.html but I don't understand how to use these methods. 2) how to make a sprite jump through a platform while he's going from down to top, but stop when he touch the platform during the fall ? Reading the documentation and looking at demos' sources, I saw that I need to use this code to set the gravity (so my sprite fall down after the jump): this.world = new game.World({gravity: [0, 9]});I'm really confused, any help will be appreciated, thank you in advance