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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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30
minetest.conf.example
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@ -1174,6 +1174,18 @@ server_side_occlusion_culling = true
# type: float
# mgv5_cave_width = 0.125
# Y-level of cavern upper limit.
# type: int
# mgv5_cavern_limit = -256
# Y-distance over which caverns expand to full size.
# type: int
# mgv5_cavern_taper = 256
# Defines full size of caverns, smaller values create larger caverns.
# type: float
# mgv5_cavern_threshold = 0.7
# type: noise_params
# mgv5_np_filler_depth = 0, 1, (150, 150, 150), 261, 4, 0.7, 2.0
@ -1189,6 +1201,9 @@ server_side_occlusion_culling = true
# type: noise_params
# mgv5_np_cave2 = 0, 12, (50, 50, 50), 10325, 4, 0.5, 2.0
# type: noise_params
# mgv5_np_cavern = 0, 1, (384, 128, 384), 723, 5, 0.63, 2.0
# Noise parameters in group format, unsupported by advanced settings
# menu but settable in minetest.conf.
# See documentation of noise parameter formats above.
@ -1284,6 +1299,18 @@ server_side_occlusion_culling = true
# type: int
# mgv7_shadow_limit = 1024
# Y-level of cavern upper limit.
# type: int
# mgv7_cavern_limit = -256
# Y-distance over which caverns expand to full size.
# type: int
# mgv7_cavern_taper = 256
# Defines full size of caverns, smaller values create larger caverns.
# type: float
# mgv7_cavern_threshold = 0.7
# type: noise_params
# mgv7_np_terrain_base = 4, 70, (600, 600, 600), 82341, 5, 0.6, 2.0
@ -1317,6 +1344,9 @@ server_side_occlusion_culling = true
# type: noise_params
# mgv7_np_ridge = 0, 1, (100, 100, 100), 6467, 4, 0.75, 2.0
# type: noise_params
# mgv7_np_cavern = 0, 1, (384, 128, 384), 723, 5, 0.63, 2.0
# type: noise_params
# mgv7_np_cave1 = 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0