paramat 0ac096991c Default: Prevent placing sapling if grown tree intersects protection ...

Add a global 'intersects protection' function to functions.lua for
checking if a specified volume intersects with a protected volume.
A 3D lattice of points are checked with an adjustable interval.
Add a global 'sapling on place' function to avoid duplicated code in
nodes.lua.

2016-07-27 21:39:22 +01:00

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