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Cavegen/Mgv5/Mgv7: Add optional giant caverns

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Add to MapgenBasic for use by multiple mapgens.
Add to mgv5 and mgv7, enabled by default.

Similar to mgvalleys caverns but half the scale.
Parameters for upper y limit, distance caverns taper to full size, and
noise threshold (full cavern size).
As with mgvalleys caverns are generated first and classic caves are
disabled in any mapchunk containing a cavern, to avoid excessive
spreading volumes of liquids.
This also avoids floating blobs of liquid where a large classic cave
has overgenerated out into a neighbouring previously-generated mapchunk.
This commit is contained in:
paramat 2017-03-12 13:26:09 +00:00
parent 86b1542181
commit 859141a0ce
10 changed files with 303 additions and 54 deletions
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5
src/mapgen.h
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@ -243,6 +243,7 @@ public:
virtual ~MapgenBasic();
virtual void generateCaves(s16 max_stone_y, s16 large_cave_depth);
virtual bool generateCaverns(s16 max_stone_y);
virtual void generateDungeons(s16 max_stone_y, MgStoneType stone_type);
virtual MgStoneType generateBiomes();
virtual void dustTopNodes();
@ -282,7 +283,11 @@ protected:
NoiseParams np_cave1;
NoiseParams np_cave2;
NoiseParams np_cavern;
float cave_width;
float cavern_limit;
float cavern_taper;
float cavern_threshold;
};
#endif