Open Source Realtime Strategy Game Engine
https://springrts.com/phpbb/
From the wiki on yardmaps. Hope this helps :)string yardmap Default: ""
Used to determine a structure from a mobile unit. A string of characters which defines in detail each 'footprint square' of the structure. Each footprint square may be:
y - 'Yard' - Always open, unblocking,
c - 'Construction' - Open and unblocking only while constructing (for factories, controlled via COB.YARD_OPEN see Animation-LuaCallouts#Other),
i - 'Inversed Construction' - Closed and blocking only while constructing (for factories, controlled via COB.YARD_OPEN see Animation-LuaCallouts#Other) (New in version 89.0),
g - 'Geothermal' - Flags that the unit must be placed over a geoThermal feature, does not actually count as a square,
o - 'Obstacle' - Always closed, blocking, all other chars are treated the same way.
Tip: 'Draw' out the yardmap over multiple lines. As of 89.0 all whitespace characters are ignored, including newlines.