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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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13
src/mapgen_v7.h
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@@ -23,10 +23,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "mapgen.h"
////////////// Mapgen V7 flags
#define MGV7_MOUNTAINS 0x01
#define MGV7_RIDGES 0x02
#define MGV7_FLOATLANDS 0x04
//////////// Mapgen V7 flags
#define MGV7_MOUNTAINS 0x01
#define MGV7_RIDGES 0x02
#define MGV7_FLOATLANDS 0x04
#define MGV7_CAVERNS 0x08
class BiomeManager;
@@ -40,6 +41,9 @@ struct MapgenV7Params : public MapgenParams {
float float_mount_height;
s16 floatland_level;
s16 shadow_limit;
s16 cavern_limit;
s16 cavern_taper;
float cavern_threshold;
NoiseParams np_terrain_base;
NoiseParams np_terrain_alt;
@@ -52,6 +56,7 @@ struct MapgenV7Params : public MapgenParams {
NoiseParams np_float_base_height;
NoiseParams np_mountain;
NoiseParams np_ridge;
NoiseParams np_cavern;
NoiseParams np_cave1;
NoiseParams np_cave2;