dfcaverns/df_caverns/oil_sea.lua
2022-07-29 17:12:59 -06:00

124 lines
3.3 KiB
Lua

if not df_caverns.config.enable_oil_sea then
return
end
local c_oil = df_caverns.node_id.oil
local c_gas = df_caverns.node_id.gas
local c_gas_wisp = df_caverns.node_id.gas_wisp
local c_lava = df_caverns.node_id.lava
local c_obsidian = df_caverns.node_id.obsidian
local log_location
if mapgen_helper.log_location_enabled then
log_location = mapgen_helper.log_first_location
end
-------------------------------------------------------------------------------------------
local perlin_cave = {
offset = 0,
scale = 1,
spread = {x=300, y=300, z=300},
seed = 6000089,
octaves = 3,
persist = 0.67
}
-- large-scale rise and fall
local perlin_wave = {
offset = 0,
scale = 1,
spread = {x=1000, y=1000, z=1000},
seed = 10089,
octaves = 3,
persist = 0.67
}
local median = df_caverns.config.oil_sea_level
local floor_mult = -80
local floor_displace = 60
local ceiling_mult = 40
local ceiling_displace = -30
local wave_mult = 10
local c_lava_set
local y_max = median + 2*wave_mult + 2*ceiling_mult + ceiling_displace
local y_min = median - 2*wave_mult + 2*floor_mult + floor_displace
minetest.register_on_generated(function(minp, maxp, seed)
--if out of range of cave definition limits, abort
if minp.y > y_max or maxp.y < y_min then
return
end
local t_start = os.clock()
local vm, data, area = mapgen_helper.mapgen_vm_data()
local nvals_cave = mapgen_helper.perlin2d("df_caverns:oil_cave", minp, maxp, perlin_cave)
local nvals_wave = mapgen_helper.perlin2d("df_caverns:oil_wave", minp, maxp, perlin_wave)
if c_lava_set == nil then
c_lava_set = {}
for name, def in pairs(minetest.registered_nodes) do
if def.groups ~= nil and def.groups.lava ~= nil then
c_lava_set[minetest.get_content_id(name)] = true
end
end
end
for vi, x, y, z in area:iterp_yxz(minp, maxp) do
local index2d = mapgen_helper.index2d(minp, maxp, x, z)
local abs_cave = math.abs(nvals_cave[index2d]) -- range is from 0 to approximately 2, with 0 being connected and 2s being islands
local wave = nvals_wave[index2d] * wave_mult
local floor_height = math.floor(abs_cave * floor_mult + floor_displace + median + wave)
local ceiling_height = math.floor(abs_cave * ceiling_mult + median + ceiling_displace + wave)
if y > floor_height - 5 and y < ceiling_height + 5 then
if c_lava_set[data[vi]] then
data[vi] = c_obsidian
end
end
if y > floor_height and y < ceiling_height then
if y > median then
if math.random() < 0.00025 and ((y < median + 3) or (y > ceiling_height - 3)) then
data[vi] = c_gas_wisp
else
data[vi] = c_gas
end
else
data[vi] = c_oil
if log_location then log_location("oil_sea", area:position(vi)) end
end
end
end
--send data back to voxelmanip
vm:set_data(data)
--calc lighting
vm:set_lighting({day = 0, night = 0})
vm:calc_lighting()
vm:update_liquids()
--write it to world
vm:write_to_map()
local time_taken = os.clock() - t_start -- how long this chunk took, in seconds
mapgen_helper.record_time("df_caverns oil sea", time_taken)
end)
minetest.register_ore({
ore_type = "scatter",
ore = "mine_gas:gas_seep",
wherein = "default:stone",
clust_scarcity = 32 * 32 * 32,
clust_num_ores = 27,
clust_size = 6,
y_max = df_caverns.config.sunless_sea_min,
y_min = y_min,
})