mirror of
https://github.com/FaceDeer/dfcaverns.git
synced 2024-11-15 07:00:26 +01:00
98 lines
2.9 KiB
Lua
98 lines
2.9 KiB
Lua
|
local data = {}
|
||
|
|
||
|
local maxy = tonumber(minetest.settings:get("chasms_maxy")) or -50
|
||
|
local miny = tonumber(minetest.settings:get("chasms_miny")) or -3000
|
||
|
local falloff = tonumber(minetest.settings:get("chasms_falloff")) or 100
|
||
|
|
||
|
local chasms_threshold = tonumber(minetest.settings:get("chasms_threshold")) or 1.0
|
||
|
local np_chasms_default = {
|
||
|
offset = 0,
|
||
|
scale = 1,
|
||
|
spread = {x = 75, y = 500, z = 2000},
|
||
|
seed = 94586,
|
||
|
octaves = 2,
|
||
|
persist = 0.63,
|
||
|
lacunarity = 2.0,
|
||
|
}
|
||
|
local np_chasms = minetest.settings:get_np_group("chasms_params") or np_chasms_default
|
||
|
-- For some reason, these numbers are returned as strings by get_np_group.
|
||
|
local tonumberize_params = function(params)
|
||
|
params.scale = tonumber(params.scale)
|
||
|
params.lacunarity = tonumber(params.lacunarity)
|
||
|
params.spread.x = tonumber(params.spread.x)
|
||
|
params.spread.y = tonumber(params.spread.y)
|
||
|
params.spread.z = tonumber(params.spread.z)
|
||
|
params.offset = tonumber(params.offset)
|
||
|
params.persistence = tonumber(params.persistence)
|
||
|
end
|
||
|
tonumberize_params(np_chasms)
|
||
|
local nobj_chasm
|
||
|
local chasm_data = {}
|
||
|
|
||
|
local waver_strength = 8
|
||
|
local waver_vector = {x=waver_strength, y=0, z=0}
|
||
|
local np_waver = {
|
||
|
offset = 0,
|
||
|
scale = waver_strength,
|
||
|
spread = {x = 50, y = 50, z = 50},
|
||
|
seed = 49585,
|
||
|
octaves = 2,
|
||
|
persist = 0.63,
|
||
|
lacunarity = 2.0,
|
||
|
}
|
||
|
local nobj_waver
|
||
|
local waver_data = {}
|
||
|
|
||
|
local minfalloff = miny + falloff
|
||
|
local maxfalloff = maxy - falloff
|
||
|
local get_intensity = function(y)
|
||
|
if y < miny or y > maxy then
|
||
|
return 0
|
||
|
end
|
||
|
if y <= maxfalloff and y >= minfalloff then
|
||
|
return 1
|
||
|
end
|
||
|
if y < minfalloff then
|
||
|
return (y-miny)/falloff
|
||
|
end
|
||
|
-- if y > maxfalloff then
|
||
|
return (maxy-y)/falloff
|
||
|
-- end
|
||
|
end
|
||
|
|
||
|
local c_air = minetest.get_content_id("air")
|
||
|
|
||
|
minetest.register_on_generated(function(minp, maxp, seed)
|
||
|
if minp.y >= maxy or maxp.y <= miny then
|
||
|
return
|
||
|
end
|
||
|
|
||
|
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
|
||
|
vm:get_data(data)
|
||
|
|
||
|
nobj_chasm = nobj_chasm or minetest.get_perlin_map(np_chasms, {x = emax.x - emin.x + 1 + waver_strength*2, y = emax.y - emin.y + 1, z = emax.z - emin.z + 1})
|
||
|
nobj_chasm:get_3d_map_flat(vector.subtract(emin, waver_vector), chasm_data)
|
||
|
|
||
|
nobj_waver = nobj_waver or minetest.get_perlin_map(np_waver, {x = emax.x - emin.x + 1, y = emax.y - emin.y + 1, z = emax.z - emin.z + 1})
|
||
|
nobj_waver:get_3d_map_flat(emin, waver_data)
|
||
|
|
||
|
local chasm_area = VoxelArea:new{MinEdge = vector.subtract(emin, waver_vector), MaxEdge = vector.add(emax, waver_vector)}
|
||
|
local data_area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
|
||
|
|
||
|
-- local count = {}
|
||
|
|
||
|
for i, x, y, z in data_area:iterp_xyz(minp, maxp) do
|
||
|
local waver = math.min(math.max(math.floor(waver_data[i]+0.5), -waver_strength), waver_strength)
|
||
|
-- count[waver] = (count[waver] or 0) + 1
|
||
|
local intensity = get_intensity(y)
|
||
|
if chasm_data[chasm_area:index(x+waver, y, z)]*intensity > chasms_threshold then
|
||
|
data[i] = c_air
|
||
|
end
|
||
|
end
|
||
|
vm:set_data(data)
|
||
|
vm:calc_lighting()
|
||
|
vm:write_to_map()
|
||
|
|
||
|
-- minetest.debug(dump(count))
|
||
|
end)
|