mirror of
https://github.com/FaceDeer/dfcaverns.git
synced 2024-11-15 07:00:26 +01:00
368 lines
14 KiB
Lua
368 lines
14 KiB
Lua
local c_water = minetest.get_content_id("default:water_source")
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local c_air = minetest.get_content_id("air")
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local c_dirt = minetest.get_content_id("default:dirt")
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local c_dirt_moss = minetest.get_content_id("df_mapitems:dirt_with_cave_moss")
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local c_wet_flowstone = minetest.get_content_id("df_mapitems:wet_flowstone")
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local c_dry_flowstone = minetest.get_content_id("df_mapitems:dry_flowstone")
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local c_veinstone = minetest.get_content_id("df_mapitems:veinstone")
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local wall_vein_perlin_params = {
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offset = 0,
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scale = 1,
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spread = {x = 50, y = 50, z = 50},
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seed = 2199,
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octaves = 3,
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persist = 0.63,
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lacunarity = 2.0,
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flags = "eased",
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}
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local subsea_level = df_caverns.config.level2_min - (df_caverns.config.level2_min - df_caverns.config.level1_min) * 0.33 -- "sea level" for the flooded caverns.
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local flooding_threshold = math.min(df_caverns.config.tunnel_flooding_threshold, df_caverns.config.cavern_threshold) -- cavern value out to which we're flooding tunnels and warrens
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local get_biome = function(heat, humidity)
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if humidity < 23 then -- about 20% of locations fall below this threshold
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return "barren"
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elseif heat < 40 then
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return "goblincap" -- about 33% are below this threshold
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elseif heat < 60 then
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return "sporetree" -- another 33%
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else
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return "tunneltube"
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end
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end
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local goblin_cap_shrublist
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local tunnel_tube_shrublist
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local spore_tree_shrublist
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if minetest.get_modpath("df_farming") then
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goblin_cap_shrublist = {
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df_farming.spawn_plump_helmet_vm,
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df_farming.spawn_plump_helmet_vm,
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df_farming.spawn_dead_fungus_vm,
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df_farming.spawn_cavern_fungi_vm,
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}
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tunnel_tube_shrublist = {
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df_farming.spawn_sweet_pod_vm,
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df_farming.spawn_cave_wheat_vm,
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df_farming.spawn_cave_wheat_vm,
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df_farming.spawn_dead_fungus_vm,
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df_farming.spawn_cavern_fungi_vm,
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}
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spore_tree_shrublist = {
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df_farming.spawn_pig_tail_vm,
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df_farming.spawn_pig_tail_vm,
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df_farming.spawn_cave_wheat_vm,
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df_farming.spawn_dead_fungus_vm,
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df_farming.spawn_cavern_fungi_vm,
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}
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end
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local goblin_cap_cavern_floor = function(abs_cracks, vert_rand, vi, area, data, data_param2)
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local ystride = area.ystride
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if abs_cracks < 0.1 then
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df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
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elseif data[vi-ystride] ~= c_air then -- leave the ground as rock if it's only one node thick
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if math.random() < 0.25 then
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data[vi] = c_dirt
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else
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data[vi] = c_dirt_moss
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end
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if math.random() < 0.1 then
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df_caverns.place_shrub(vi+ystride, area, data, data_param2, goblin_cap_shrublist)
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elseif math.random() < 0.015 then
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df_trees.spawn_goblin_cap_vm(vi+ystride, area, data)
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end
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end
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end
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local spore_tree_cavern_floor = function(abs_cracks, vert_rand, vi, area, data, data_param2)
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local ystride = area.ystride
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if abs_cracks < 0.1 then
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df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
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elseif data[vi-ystride] ~= c_air then -- leave the ground as rock if it's only one node thick
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if math.random() < 0.25 then
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data[vi] = c_dirt
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else
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data[vi] = c_dirt_moss
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end
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if math.random() < 0.1 then
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df_caverns.place_shrub(vi+ystride, area, data, data_param2, spore_tree_shrublist)
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elseif math.random() < 0.05 then
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df_trees.spawn_spore_tree_vm(vi+ystride, area, data)
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end
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end
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end
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local tunnel_tube_cavern_floor = function(abs_cracks, vert_rand, vi, area, data, data_param2)
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local ystride = area.ystride
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if abs_cracks < 0.1 then
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df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
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elseif data[vi-ystride] ~= c_air then -- leave the ground as rock if it's only one node thick
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if math.random() < 0.25 then
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data[vi] = c_dirt
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else
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data[vi] = c_dirt_moss
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end
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if math.random() < 0.1 then
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df_caverns.place_shrub(vi+ystride, area, data, data_param2, tunnel_tube_shrublist)
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elseif math.random() < 0.05 then
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df_trees.spawn_tunnel_tube_vm(vi+ystride, area, data, data_param2)
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end
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end
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end
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local decorate_level_2 = function(minp, maxp, seed, vm, node_arrays, area, data)
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math.randomseed(minp.x + minp.y*2^8 + minp.z*2^16 + seed) -- make decorations consistent between runs
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local heatmap = minetest.get_mapgen_object("heatmap")
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local humiditymap = minetest.get_mapgen_object("humiditymap")
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local data_param2 = df_caverns.data_param2
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vm:get_param2_data(data_param2)
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local nvals_cracks = mapgen_helper.perlin2d("df_cavern:cracks", minp, maxp, df_caverns.np_cracks)
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local nvals_cave = node_arrays.nvals_cave
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local cave_area = node_arrays.cave_area
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local cavern_def = node_arrays.cavern_def
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local vein_noise
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-- Partly fill flooded caverns and warrens
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for vi in area:iterp(minp, maxp) do
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local cave_val = nvals_cave[cave_area:transform(area, vi)]
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if cave_val < -flooding_threshold then
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local cave_threshold = cavern_def.cave_threshold
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--check if we're just inside the boundary of the (negazone) cavern threshold
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if biome_name == "barren" and cave_val < -cave_threshold and cave_val > -cave_threshold - 0.01 then
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-- add giant rooty structures to the flooded barren caverns
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if vein_noise == nil then
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vein_noise = mapgen_helper.perlin3d("df_caverns:wall_veins", minp, maxp, wall_vein_perlin_params)
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end
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-- we can reuse cave_area here, its extents are minp, maxp too.
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if data[vi] == c_air and math.abs(vein_noise[cave_area:transform(area, vi)]) < 0.02 then
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data[vi] = c_veinstone
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end
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end
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if data[vi] == c_air and area:get_y(vi) <= subsea_level then
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data[vi] = c_water -- otherwise, fill air with water when below sea level
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end
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end
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end
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---------------------------------------------------------
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-- Cavern floors
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for _, vi in ipairs(node_arrays.cavern_floor_nodes) do
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local vert_rand = mapgen_helper.xz_consistent_randomi(area, vi)
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local abs_cracks = math.abs(nvals_cracks[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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if minp.y < subsea_level and area:get_y(vi) < subsea_level and flooded_caverns then
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-- underwater floor
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df_caverns.flooded_cavern_floor(abs_cracks, vert_rand, vi, area, data)
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elseif biome_name == "barren" then
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if flooded_caverns then
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df_caverns.wet_cavern_floor(abs_cracks, vert_rand, vi, area, data, data_param2)
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else
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df_caverns.dry_cavern_floor(abs_cracks, vert_rand, vi, area, data, data_param2)
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end
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elseif biome_name == "goblincap" then
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goblin_cap_cavern_floor(abs_cracks, vert_rand, vi, area, data, data_param2)
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elseif biome_name == "sporetree" then
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spore_tree_cavern_floor(abs_cracks, vert_rand, vi, area, data, data_param2)
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elseif biome_name == "tunneltube" then
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tunnel_tube_cavern_floor(abs_cracks, vert_rand, vi, area, data, data_param2)
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end
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end
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--------------------------------------
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-- Cavern ceilings
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for _, vi in ipairs(node_arrays.cavern_ceiling_nodes) do
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local vert_rand = mapgen_helper.xz_consistent_randomi(area, vi)
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local abs_cracks = math.abs(nvals_cracks[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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if flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level then
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-- underwater ceiling, do nothing
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elseif biome_name == "barren" then
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if flooded_caverns then
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-- wet barren
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if abs_cracks < 0.1 then
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df_caverns.stalactites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
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end
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else
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-- dry barren
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if abs_cracks < 0.075 then
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df_caverns.stalactites(abs_cracks, vert_rand, vi, area, data, data_param2, false)
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end
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local y = area:get_y(vi)
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local y_proportional = (y - df_caverns.config.level1_min) / (df_caverns.config.level2_min - df_caverns.config.level1_min)
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if abs_cracks * y_proportional > 0.3 and math.random() < 0.005 * y_proportional then
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df_mapitems.place_big_crystal_cluster(area, data, data_param2, vi, math.random(0,1), true)
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end
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end
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else -- all the other biomes
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df_caverns.glow_worm_cavern_ceiling(abs_cracks, vert_rand, vi, area, data, data_param2)
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end
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end
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----------------------------------------------
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-- Tunnel floors
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for _, vi in ipairs(node_arrays.tunnel_floor_nodes) do
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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if not (flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level) then
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if flooded_caverns or biome_name ~= "barren" then
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-- we're in flooded areas or are not barren
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df_caverns.tunnel_floor(minp, maxp, area, vi, nvals_cracks, data, data_param2, true)
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else
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df_caverns.tunnel_floor(minp, maxp, area, vi, nvals_cracks, data, data_param2, false)
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end
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end
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end
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------------------------------------------------------
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-- Tunnel ceiling
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for _, vi in ipairs(node_arrays.tunnel_ceiling_nodes) do
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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local ystride = area.ystride
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if not (flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level) then
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if flooded_caverns or biome_name ~= "barren" then
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-- we're in flooded areas or are not barren
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df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, true)
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else
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df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, false)
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end
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if not flooded_caverns and (biome_name == "barren" or biome_name == "sporetree") and nvals_cracks[index2d] > 0.5 then
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for i= 1, 4 do
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if math.random() > 0.5 then
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df_mapitems.place_wall_pearls(vi-i*ystride, area, data, data_param2)
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end
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end
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end
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else
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-- air pockets
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local ystride = area.ystride
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local cracks = nvals_cracks[index2d]
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if cracks > 0.4 and data[vi-ystride] == c_water then
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data[vi-ystride] = c_air
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if cracks > 0.6 and data[vi-ystride*2] == c_water then
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data[vi-ystride*2] = c_air
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end
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end
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end
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end
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----------------------------------------------
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-- Warren floors
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for _, vi in ipairs(node_arrays.warren_floor_nodes) do
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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if not (flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level) then
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if flooded_caverns or biome_name ~= "barren" then
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-- we're in flooded areas or are not barren
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df_caverns.tunnel_floor(minp, maxp, area, vi, nvals_cracks, data, data_param2, true)
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else
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df_caverns.tunnel_floor(minp, maxp, area, vi, nvals_cracks, data, data_param2, false)
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end
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end
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end
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------------------------------------------------------
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-- Warren ceiling
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for _, vi in ipairs(node_arrays.warren_ceiling_nodes) do
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local flooded_caverns = nvals_cave[cave_area:transform(area, vi)] < 0 -- this indicates if we're in the "flooded" set of caves or not.
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local ystride = area.ystride
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if not (flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level) then
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if flooded_caverns or biome_name ~= "barren" then
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-- we're in flooded areas or are not barren
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df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, true)
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else
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df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, false)
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end
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if not flooded_caverns and (biome_name == "barren" or biome_name == "sporetree") and nvals_cracks[index2d] > 0.5 then
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for i= 1, 4 do
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if math.random() > 0.5 then
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df_mapitems.place_wall_pearls(vi-i*ystride, area, data, data_param2)
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end
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end
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end
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else
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-- air pockets
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local cracks = nvals_cracks[index2d]
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if cracks > 0.4 and data[vi-ystride] == c_water then
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data[vi-ystride] = c_air
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if cracks > 0.6 and data[vi-ystride*2] == c_water then
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data[vi-ystride*2] = c_air
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end
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end
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end
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end
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----------------------------------------------
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-- Column material override for dry biome
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for _, vi in ipairs(node_arrays.column_nodes) do
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local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
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local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
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local dry = (biome_name == "barren") and (nvals_cave[cave_area:transform(area, vi)] > 0)
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if dry and data[vi] == c_wet_flowstone then
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data[vi] = c_dry_flowstone
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end
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end
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vm:set_param2_data(data_param2)
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end
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subterrane.register_layer({
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name = "cavern layer 2",
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y_max = df_caverns.config.level1_min-1,
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y_min = df_caverns.config.level2_min,
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cave_threshold = df_caverns.config.cavern_threshold,
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boundary_blend_range = 64, -- range near ymin and ymax over which caves diminish to nothing
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perlin_cave = df_caverns.perlin_cave,
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perlin_wave = df_caverns.perlin_wave,
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solidify_lava = true,
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columns = {
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maximum_radius = 15,
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minimum_radius = 4,
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node = "df_mapitems:wet_flowstone",
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weight = 0.25,
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maximum_count = 50,
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minimum_count = 5,
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},
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decorate = decorate_level_2,
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warren_region_variability_threshold = 0.33,
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double_frequency = true,
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})
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