I am designing an ISO engine, and want to have heights with slopes just like the games "Transport Tycoon" and "Sim City 2000" I know this can be achieved by setting a height for each map cell, and do something like this: _____ |_|_|_| |_|m|_| |_|_|_| Where m is the tile that I am currently drawing.. I check all the locations beside this one and calculate what tiles I need to draw. If the northern cell is higher, my tile should be number 2, if the northern cell is higher AND the north-ease cell is higher, my tile should be number 3 Hope this makes sense? I have read the article here on Gamedev.net on "seamless" tilebased terrain, and I am wondering if that is the correct approach? Does anyone have a clue? oogly tore_waldow@hotmail.com

Hi,

I made a small engine once that gave a height to every tile corner. I simply drew the tiles from back to front and that seemed to work OK. I never got as far as drawing walls and stuff on top of the tiles though.

Neil

Use the same method you use to generate your map previews on individual tiles. Then add a Z offset and interpolate between the 4 desired corners drawing a line from the position it''d normally be up in 3D to the Z level. Works nicely.

Also, it helps to do some sort of smoothing after this, as this method tends to be a bit pixelated. Or have a larger source image.