Bushes: Add saplings

Bush saplings grow in half the time of tree saplings.
Bushes do not need 'from sapling' schematic variants because only the
stem node is force-placed in the mapgen schematic, so only the sapling
is force-replaced.
Bush leaves drop saplings with a rarity that ensures at least 1 sapling
per bush on average.
This commit is contained in:
paramat 2017-04-12 09:25:21 +01:00
parent d68d2c08ef
commit a57d2db54a
7 changed files with 140 additions and 3 deletions

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