Level editor (surmap)

[kvark]

We need a tool to create or edit existing level data:

• could render the level top-down with orthographic projection (1:1 pixels to texels ratio)
• user would select a layer to work with: top, bottom, terrain type, etc. May also show many at once in different channels.
• mouse could be used to deform the level with configurable area of effect
• OBJ models could be imported, rotated, and baked into the level

[Aidoneus]

Import/export of height maps would be appreciated as well, I think