To my knowledge, arrays.dat controls literal tile definition such as blocking and swimming tiles...it would be increadibly nice to have a custom arrays.dat that allowed tilesets to be larger and more organized than pics1.png is now. It could be like how it is in RPM2k where in the game editor, you can set how the tiles in the base layer behave...maybe this would also allow for extra tile layers? That way you wouldn't have to use image NPCs that will block the player...it would simply be nice to have a 2nd or 3rd layer that allows you to add in tiles that can block and so forth...kind like this, layer1: 3D terrain, layer2: blocking tiles/swimming/etc. layer3: overlay tiles which the player will pass under like treetops (would save me and others the time and effort of making image NPCw with drawoverplayer redundantly...and since levels are basically saved now as plain text they can't be that big if you have another 2 layers :/ and just think how much this would save on lag if fewer NPCs were in the level
