Make generated saplings plant themselves

[Poikilos]

If the were falling nodes (that become regular node saplings on reaching the ground--or, I suppose, if all node versions of saplings were falling and broke and became craftitems when landing on an existing sapling node underneath) instead of craftitems, that's about the only way I know to plant them (other than via a loop that checks for next dirt under it). Of course, some sanity checks would be needed such as maybe 3 nodes of dirt or dirt_with_grass where it lands (enough dirt to nurish the tree, maybe even a 3x3x3 area). Otherwise it should break and become a craftitem in this case as well.

• There should only be a small chance of self-planting: about one replant per tree or so.

[slopsbucket]

This is very similar to a suggestion I made about 6 years ago:

All plants - flowers, trees and grasses - should die of old age. If the trees were also able to seed themselves as you suggest above, then you would have an ever altering and shifting landscape of forests and plants.

Cheers, Andrew.