Add Edge Frames for Buildings or Objects Placed on Slopes

[KINGTUT10101]

Edge frames are type of decorative object that is placed under buildings when their tiles are above sloped terrain. Here is an example of a spritesheet containing edge frames:

When a building is built on a slope, these edge frames will be built underneath the building automatically.

There will be multiple variations of edge frames. Some examples include sheet metal, concrete, and wood. These edge frames will need to go on a separate layer from ground deco. As shown in the previous picture, ground deco should be rendered on top of the edge frame, but below the building. If the building does not have ground deco, then the game should automatically switch to the terrain tile instead.

In a building's definition, we should be able to choose which edge frames can be used when the game automatically places them under a building. This could be defined in a fashion similar to ground deco. For example:

"edge frames":[
"EdgeFrames_Wood",
"EdgeFrames_SheetMetal"]

Adding this to the building would mean that only these two edge frame types would be automatically placed under the building. This is NOT meant to restrict what edge frame types can be placed under a building manually.

[Mograbi]

I recall that we couldn't place building on slopes, is this changed ?

[KINGTUT10101]

That's what this idea is meant to address. No, buildings can't be placed on slopes right now, but that's only because we didn't have edge frames implemented yet.