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Dungeons: Avoid generation in multiple liquid nodes and 'airlike'

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Previously only 'mapgen water source' and 'mapgen river water source'
were checked for. Games can use multiple liquid nodes defined for biomes,
many of which will not be aliased to those 2 mapgen aliases, causing
floating dungeons to generate in some liquids.

Now we check for liquid drawtype instead, so can remove liquid nodes
from dungeonparams.

Also check for 'airlike' drawtype instead of 'CONTENT_AIR' to avoid
generation in 'airlike' nodes in some rare situations. This will also be
needed for when we add definable biome air nodes.
This commit is contained in:
paramat 2018-02-12 00:52:44 +00:00 • committed by paramat
parent 1156088db7
commit 861cfd8484
4 changed files with 9 additions and 20 deletions
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2
src/mapgen/mapgen.cpp
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@ -886,8 +886,6 @@ void MapgenBasic::generateDungeons(s16 max_stone_y,
DungeonParams dp;
dp.seed = seed;
dp.c_water = c_water_source;
dp.c_river_water = c_river_water_source;
dp.only_in_ground = true;
dp.corridor_len_min = 1;