Cache land texture update until frame render. This greately improves performance when there are many explosions, or you're using drilling weapon
foreach(dir
Bamboo
BambooPlinko
Bath
Blox
Cake
Castle
cheese
Cogs
CrazyMission
EarthRise
Eyes
HedgeFortress
Hedgelove
Hedgewars
Hydrant
Lonely_Island
mushrooms
PirateFlag
Plane
Sheep
)
add_subdirectory(${dir})
endforeach(dir)