How do I make maptiles that hurt you?

Harm tiles are maptiles that do damage to your hero when you step on them.

To make harm tiles, first go into Edit Map Data, and load up the map you are going to add the harm tiles to.

In the map editor, go into Edit General Map Data

Now set the Harm-Tile Damage to the number of hit points that the tile will take away (you can use a negative number to make cure tiles)

If you want the screen to flash when you step on a Harm tile, then set the Harm-Tile Flash color.

Now edit your map in Wallmap mode. Press H to turn tiles into harm tiles.