Here a way to generate a huge playing board for tile-based games (eg. 1.000.000 tiles). Pay attention to simplicity of the FindWorldTileChars subroutine. Notice wrap-around method for coping with Scratch!'s limit of 300 clones (and performance acceptability..). Have a look at RecycleEventually routine. Also, special tiles can be handled via lists. Look at SetupCastle for instance. Turning dry plants into flowers is another example. There's a way to view the terrain's map if you click on "M" key. Better be in turbo mode then.. Maybe you'll notice as well a head-movement control of the scrolling? (allow video for this). This is handled using the scene's code never handling loop, and usage of the DX and DY params elsewhere.
