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Randomwalk caves: Add parameters for number, proportion flooded. Allow small caves (#8928)

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Add mapgen parameters to set the range of the random number of
randomwalk caves per mapchunk, and to set the proportion that are
flooded with liquids.
Default values are, for now, unchanged from the previous hardcoded
values.

Add parameters to allow small randomwalk caves
Disabled by default for now as they have never been present in the
non-mgv6 mapgens.
This commit is contained in:
Paramat 2019-11-08 03:09:43 +00:00 • committed by GitHub
parent 5506e97ed8
commit 2a74727857
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17 changed files with 416 additions and 188 deletions
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6
src/mapgen/cavegen.h
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@ -116,15 +116,14 @@ public:
s16 *heightmap;
BiomeGen *bmgn;
// configurable parameters
s32 seed;
int water_level;
float large_cave_flooded;
// TODO 'lava_depth' and 'np_caveliquids' are deprecated and should be removed.
// Cave liquids are now defined and located using biome definitions.
int lava_depth;
NoiseParams *np_caveliquids;
// intermediate state variables
u16 ystride;
s16 min_tunnel_diameter;
@ -161,7 +160,8 @@ public:
CavesRandomWalk(const NodeDefManager *ndef, GenerateNotifier *gennotify =
NULL, s32 seed = 0, int water_level = 1, content_t water_source =
CONTENT_IGNORE, content_t lava_source = CONTENT_IGNORE,
int lava_depth = -256, BiomeGen *biomegen = NULL);
float large_cave_flooded = 0.5f, int lava_depth = -256,
BiomeGen *biomegen = NULL);
// vm and ps are mandatory parameters.
// If heightmap is NULL, the surface level at all points is assumed to