Start off by using the mouse to draw your level. Use the "G" key to toggle the grid. When your done drawing your level, press the spacebar to render the level. Use the mouse to place the player, then use the arrow keys to play. Note: Because the clone limit is 300, especially large levels may not be able to render correctly.
All credit goes to @AgentCNF, I just made it so that tiles that had a tile on top of them wouldn't have the grass texture, also touching the edge (or pressing space after you start platforming) will make you spawn back at the beginning. If @AgentCNF wants to, he can use this script or take Ideas from it.
