forked from mtcontrib/plantlife_modpack
690 lines
26 KiB
Lua
690 lines
26 KiB
Lua
-- Plantlife library mod by Vanessa Ezekowitz
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--
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-- License: WTFPL
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--
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-- I got the temperature map idea from "hmmmm", values used for it came from
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-- Splizard's snow mod.
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--
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-- Various settings - most of these probably won't need to be changed
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plantslib = {}
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plantslib.blocklist_aircheck = {}
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plantslib.blocklist_no_aircheck = {}
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plantslib.surface_nodes_aircheck = {}
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plantslib.surface_nodes_no_aircheck = {}
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plantslib.surfaceslist_aircheck = {}
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plantslib.surfaceslist_no_aircheck = {}
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plantslib.actioncount_aircheck = {}
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plantslib.actioncount_no_aircheck = {}
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plantslib.actionslist_aircheck = {}
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plantslib.actionslist_no_aircheck = {}
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plantslib.modpath = minetest.get_modpath("plants_lib")
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plantslib.total_no_aircheck_calls = 0
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-- Boilerplate to support localized strings if intllib mod is installed.
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local S
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if minetest.get_modpath("intllib") then
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S = intllib.Getter()
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else
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S = function(s) return s end
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end
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plantslib.intllib = S
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local DEBUG = false --... except if you want to spam the console with debugging info :-)
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function plantslib:dbg(msg)
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if DEBUG then
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print("[Plantlife] "..msg)
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minetest.log("verbose", "[Plantlife] "..msg)
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end
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end
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plantslib.plantlife_seed_diff = 329 -- needs to be global so other mods can see it
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local perlin_octaves = 3
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local perlin_persistence = 0.6
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local perlin_scale = 100
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local temperature_seeddiff = 112
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local temperature_octaves = 3
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local temperature_persistence = 0.5
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local temperature_scale = 150
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local humidity_seeddiff = 9130
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local humidity_octaves = 3
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local humidity_persistence = 0.5
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local humidity_scale = 250
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local time_scale = 1
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local time_speed = tonumber(minetest.setting_get("time_speed"))
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if time_speed and time_speed > 0 then
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time_scale = 72 / time_speed
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end
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--PerlinNoise(seed, octaves, persistence, scale)
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plantslib.perlin_temperature = PerlinNoise(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
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plantslib.perlin_humidity = PerlinNoise(humidity_seeddiff, humidity_octaves, humidity_persistence, humidity_scale)
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-- Local functions
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function plantslib:is_node_loaded(node_pos)
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local n = minetest.get_node_or_nil(node_pos)
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if (not n) or (n.name == "ignore") then
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return false
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end
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return true
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end
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function plantslib:set_defaults(biome)
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biome.seed_diff = biome.seed_diff or 0
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biome.min_elevation = biome.min_elevation or -31000
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biome.max_elevation = biome.max_elevation or 31000
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biome.temp_min = biome.temp_min or 1
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biome.temp_max = biome.temp_max or -1
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biome.humidity_min = biome.humidity_min or 1
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biome.humidity_max = biome.humidity_max or -1
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biome.plantlife_limit = biome.plantlife_limit or 0.1
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biome.near_nodes_vertical = biome.near_nodes_vertical or 1
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-- specific to on-generate
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biome.neighbors = biome.neighbors or biome.surface
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biome.near_nodes_size = biome.near_nodes_size or 0
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biome.near_nodes_count = biome.near_nodes_count or 1
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biome.rarity = biome.rarity or 50
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biome.max_count = biome.max_count or 5
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if biome.check_air ~= false then biome.check_air = true end
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-- specific to abm spawner
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biome.seed_diff = biome.seed_diff or 0
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biome.light_min = biome.light_min or 0
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biome.light_max = biome.light_max or 15
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biome.depth_max = biome.depth_max or 1
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biome.facedir = biome.facedir or 0
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end
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local function search_table(t, s)
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for i = 1, #t do
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if t[i] == s then return true end
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end
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return false
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end
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-- register the list of surfaces to spawn stuff on, filtering out all duplicates.
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-- separate the items by air-checking or non-air-checking map eval methods
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function plantslib:register_generate_plant(biomedef, nodes_or_function_or_model)
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-- if calling code passes an undefined node for a surface or
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-- as a node to be spawned, don't register an action for it.
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if type(nodes_or_function_or_model) == "string"
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and string.find(nodes_or_function_or_model, ":")
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and not minetest.registered_nodes[nodes_or_function_or_model] then
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plantslib:dbg("Warning: Ignored registration for undefined spawn node: "..dump(nodes_or_function_or_model))
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return
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end
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if type(nodes_or_function_or_model) == "string"
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and not string.find(nodes_or_function_or_model, ":") then
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plantslib:dbg("Warning: Registered function call using deprecated string method: "..dump(nodes_or_function_or_model))
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end
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if biomedef.check_air == false then
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plantslib:dbg("Register no-air-check mapgen hook: "..dump(nodes_or_function_or_model))
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plantslib.actionslist_no_aircheck[#plantslib.actionslist_no_aircheck + 1] = { biomedef, nodes_or_function_or_model }
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local s = biomedef.surface
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if type(s) == "string" then
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if s and (string.find(s, "^group:") or minetest.registered_nodes[s]) then
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if not search_table(plantslib.surfaceslist_no_aircheck, s) then
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plantslib.surfaceslist_no_aircheck[#plantslib.surfaceslist_no_aircheck + 1] = s
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end
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else
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plantslib:dbg("Warning: Ignored no-air-check registration for undefined surface node: "..dump(s))
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end
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else
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for i = 1, #biomedef.surface do
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local s = biomedef.surface[i]
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if s and (string.find(s, "^group:") or minetest.registered_nodes[s]) then
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if not search_table(plantslib.surfaceslist_no_aircheck, s) then
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plantslib.surfaceslist_no_aircheck[#plantslib.surfaceslist_no_aircheck + 1] = s
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end
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else
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plantslib:dbg("Warning: Ignored no-air-check registration for undefined surface node: "..dump(s))
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end
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end
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end
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else
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plantslib:dbg("Register with-air-checking mapgen hook: "..dump(nodes_or_function_or_model))
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plantslib.actionslist_aircheck[#plantslib.actionslist_aircheck + 1] = { biomedef, nodes_or_function_or_model }
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local s = biomedef.surface
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if type(s) == "string" then
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if s and (string.find(s, "^group:") or minetest.registered_nodes[s]) then
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if not search_table(plantslib.surfaceslist_aircheck, s) then
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plantslib.surfaceslist_aircheck[#plantslib.surfaceslist_aircheck + 1] = s
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end
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else
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plantslib:dbg("Warning: Ignored with-air-checking registration for undefined surface node: "..dump(s))
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end
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else
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for i = 1, #biomedef.surface do
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local s = biomedef.surface[i]
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if s and (string.find(s, "^group:") or minetest.registered_nodes[s]) then
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if not search_table(plantslib.surfaceslist_aircheck, s) then
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plantslib.surfaceslist_aircheck[#plantslib.surfaceslist_aircheck + 1] = s
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end
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else
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plantslib:dbg("Warning: Ignored with-air-checking registration for undefined surface node: "..dump(s))
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end
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end
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end
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end
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end
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function plantslib:populate_surfaces(biome, nodes_or_function_or_model, snodes, checkair)
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plantslib:set_defaults(biome)
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-- filter stage 1 - find nodes from the supplied surfaces that are within the current biome.
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local in_biome_nodes = {}
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local perlin_fertile_area = minetest.get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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for i = 1, #snodes do
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local pos = snodes[i]
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local noise1 = perlin_fertile_area:get2d({x=pos.x, y=pos.z})
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local noise2 = plantslib.perlin_temperature:get2d({x=pos.x, y=pos.z})
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local noise3 = plantslib.perlin_humidity:get2d({x=pos.x+150, y=pos.z+50})
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local biome_surfaces_string = dump(biome.surface)
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local surface_ok = false
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if not biome.depth then
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local dest_node = minetest.get_node(pos)
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if string.find(biome_surfaces_string, dest_node.name) then
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surface_ok = true
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else
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if string.find(biome_surfaces_string, "group:") then
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for j = 1, #biome.surface do
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if string.find(biome.surface[j], "^group:")
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and minetest.get_item_group(dest_node.name, biome.surface[j]) then
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surface_ok = true
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break
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end
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end
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end
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end
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elseif not string.find(biome_surfaces_string, minetest.get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name) then
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surface_ok = true
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end
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if surface_ok
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and (not checkair or minetest.get_node(p_top).name == "air")
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and pos.y >= biome.min_elevation
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and pos.y <= biome.max_elevation
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and noise1 > biome.plantlife_limit
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and noise2 <= biome.temp_min
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and noise2 >= biome.temp_max
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and noise3 <= biome.humidity_min
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and noise3 >= biome.humidity_max
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and (not biome.ncount or #(minetest.find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, biome.neighbors)) > biome.ncount)
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and (not biome.near_nodes or #(minetest.find_nodes_in_area({x=pos.x-biome.near_nodes_size, y=pos.y-biome.near_nodes_vertical, z=pos.z-biome.near_nodes_size}, {x=pos.x+biome.near_nodes_size, y=pos.y+biome.near_nodes_vertical, z=pos.z+biome.near_nodes_size}, biome.near_nodes)) >= biome.near_nodes_count)
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and math.random(1,100) > biome.rarity
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and (not biome.below_nodes or string.find(dump(biome.below_nodes), minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name) )
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then
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in_biome_nodes[#in_biome_nodes + 1] = pos
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end
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end
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-- filter stage 2 - find places within that biome area to place the plants.
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local num_in_biome_nodes = #in_biome_nodes
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if num_in_biome_nodes > 0 then
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for i = 1, math.min(biome.max_count, num_in_biome_nodes) do
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local tries = 0
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local spawned = false
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while tries < 2 and not spawned do
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local pos = in_biome_nodes[math.random(1, num_in_biome_nodes)]
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if biome.spawn_replace_node then
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pos.y = pos.y-1
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end
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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if not (biome.avoid_nodes and biome.avoid_radius and minetest.find_node_near(p_top, biome.avoid_radius + math.random(-1.5,2), biome.avoid_nodes)) then
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if biome.delete_above then
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minetest.remove_node(p_top)
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minetest.remove_node({x=p_top.x, y=p_top.y+1, z=p_top.z})
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end
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if biome.delete_above_surround then
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minetest.remove_node({x=p_top.x-1, y=p_top.y, z=p_top.z})
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minetest.remove_node({x=p_top.x+1, y=p_top.y, z=p_top.z})
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minetest.remove_node({x=p_top.x, y=p_top.y, z=p_top.z-1})
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minetest.remove_node({x=p_top.x, y=p_top.y, z=p_top.z+1})
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minetest.remove_node({x=p_top.x-1, y=p_top.y+1, z=p_top.z})
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minetest.remove_node({x=p_top.x+1, y=p_top.y+1, z=p_top.z})
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minetest.remove_node({x=p_top.x, y=p_top.y+1, z=p_top.z-1})
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minetest.remove_node({x=p_top.x, y=p_top.y+1, z=p_top.z+1})
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end
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if biome.spawn_replace_node then
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minetest.remove_node(pos)
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end
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local objtype = type(nodes_or_function_or_model)
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if objtype == "table" then
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if nodes_or_function_or_model.axiom then
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plantslib:generate_tree(pos, nodes_or_function_or_model)
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spawned = true
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else
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local fdir = nil
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if biome.random_facedir then
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fdir = math.random(biome.random_facedir[1], biome.random_facedir[2])
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end
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minetest.set_node(p_top, { name = nodes_or_function_or_model[math.random(#nodes_or_function_or_model)], param2 = fdir })
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spawned = true
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end
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elseif objtype == "string" and
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minetest.registered_nodes[nodes_or_function_or_model] then
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local fdir = nil
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if biome.random_facedir then
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fdir = math.random(biome.random_facedir[1], biome.random_facedir[2])
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end
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minetest.set_node(p_top, { name = nodes_or_function_or_model, param2 = fdir })
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spawned = true
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elseif objtype == "function" then
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nodes_or_function_or_model(pos)
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spawned = true
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elseif objtype == "string" and pcall(loadstring(("return %s(...)"):
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format(nodes_or_function_or_model)),pos) then
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spawned = true
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else
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plantslib:dbg("Warning: Ignored invalid definition for object "..dump(nodes_or_function_or_model).." that was pointed at {"..dump(pos).."}")
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end
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else
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tries = tries + 1
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end
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end
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end
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end
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end
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-- Primary mapgen spawner, for mods that can work with air checking enabled on
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-- a surface during the initial map read stage.
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function plantslib:generate_block_with_air_checking(dtime)
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if dtime > 0.2 then return end -- don't attempt to populate if lag is too high
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if #plantslib.blocklist_aircheck > 0 then
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local minp = plantslib.blocklist_aircheck[1][1]
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local maxp = plantslib.blocklist_aircheck[1][2]
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-- use the block hash as a unique key into the surface nodes
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-- tables, so that we can write the tables thread-safely.
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local blockhash = minetest.hash_node_position(minp)
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if not plantslib.surface_nodes_aircheck.blockhash then
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local search_area = minetest.find_nodes_in_area(minp, maxp, plantslib.surfaceslist_aircheck)
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-- search the generated block for air-bounded surfaces
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plantslib.surface_nodes_aircheck.blockhash = {}
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for i = 1, #search_area do
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local pos = search_area[i]
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local p_top = { x=pos.x, y=pos.y+1, z=pos.z }
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if minetest.get_node(p_top).name == "air" then
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plantslib.surface_nodes_aircheck.blockhash[#plantslib.surface_nodes_aircheck.blockhash + 1] = pos
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end
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end
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plantslib.actioncount_aircheck.blockhash = 1
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else
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if plantslib.actioncount_aircheck.blockhash <= #plantslib.actionslist_aircheck then
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-- [1] is biome, [2] is node/function/model
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plantslib:populate_surfaces(
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plantslib.actionslist_aircheck[plantslib.actioncount_aircheck.blockhash][1],
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plantslib.actionslist_aircheck[plantslib.actioncount_aircheck.blockhash][2],
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plantslib.surface_nodes_aircheck.blockhash, true)
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plantslib.actioncount_aircheck.blockhash = plantslib.actioncount_aircheck.blockhash + 1
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else
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if plantslib.surface_nodes_aircheck.blockhash then
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table.remove(plantslib.blocklist_aircheck, 1)
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plantslib.surface_nodes_aircheck.blockhash = nil
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end
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end
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end
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end
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end
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-- Secondary mapgen spawner, for mods that require disabling of
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-- checking for air during the initial map read stage.
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function plantslib:generate_block_no_aircheck(dtime)
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if dtime > 0.2 then return end
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if #plantslib.blocklist_no_aircheck > 0 then
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local minp = plantslib.blocklist_no_aircheck[1][1]
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local maxp = plantslib.blocklist_no_aircheck[1][2]
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local blockhash = minetest.hash_node_position(minp)
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if not plantslib.surface_nodes_no_aircheck.blockhash then
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-- directly read the block to be searched into the chunk cache
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plantslib.surface_nodes_no_aircheck.blockhash =
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minetest.find_nodes_in_area(minp, maxp, plantslib.surfaceslist_no_aircheck)
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plantslib.actioncount_no_aircheck.blockhash = 1
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else
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if plantslib.actioncount_no_aircheck.blockhash <= #plantslib.actionslist_no_aircheck then
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plantslib:populate_surfaces(
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plantslib.actionslist_no_aircheck[plantslib.actioncount_no_aircheck.blockhash][1],
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plantslib.actionslist_no_aircheck[plantslib.actioncount_no_aircheck.blockhash][2],
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plantslib.surface_nodes_no_aircheck.blockhash, false)
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plantslib.actioncount_no_aircheck.blockhash = plantslib.actioncount_no_aircheck.blockhash + 1
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else
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if plantslib.surface_nodes_no_aircheck.blockhash then
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table.remove(plantslib.blocklist_no_aircheck, 1)
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plantslib.surface_nodes_no_aircheck.blockhash = nil
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end
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end
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end
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end
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end
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-- "Record" the chunks being generated by the core mapgen
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minetest.register_on_generated(function(minp, maxp, blockseed)
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plantslib.blocklist_aircheck[#plantslib.blocklist_aircheck + 1] = { minp, maxp }
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end)
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minetest.register_on_generated(function(minp, maxp, blockseed)
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plantslib.blocklist_no_aircheck[#plantslib.blocklist_no_aircheck + 1] = { minp, maxp }
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end)
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-- "Play" them back, populating them with new stuff in the process
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minetest.register_globalstep(function(dtime)
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plantslib:generate_block_with_air_checking(dtime)
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end)
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minetest.register_globalstep(function(dtime)
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plantslib:generate_block_no_aircheck(dtime)
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end)
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-- The spawning ABM
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function plantslib:spawn_on_surfaces(sd,sp,sr,sc,ss,sa)
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local biome = {}
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if type(sd) ~= "table" then
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biome.spawn_delay = sd -- old api expects ABM interval param here.
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biome.spawn_plants = {sp}
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biome.avoid_radius = sr
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biome.spawn_chance = sc
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biome.spawn_surfaces = {ss}
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biome.avoid_nodes = sa
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else
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biome = sd
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end
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if biome.spawn_delay*time_scale >= 1 then
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biome.interval = biome.spawn_delay*time_scale
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else
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biome.interval = 1
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end
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plantslib:set_defaults(biome)
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biome.spawn_plants_count = #(biome.spawn_plants)
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minetest.register_abm({
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nodenames = biome.spawn_surfaces,
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interval = biome.interval,
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chance = biome.spawn_chance,
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neighbors = biome.neighbors,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local n_top = minetest.get_node(p_top)
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local perlin_fertile_area = minetest.get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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local noise1 = perlin_fertile_area:get2d({x=p_top.x, y=p_top.z})
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local noise2 = plantslib.perlin_temperature:get2d({x=p_top.x, y=p_top.z})
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local noise3 = plantslib.perlin_humidity:get2d({x=p_top.x+150, y=p_top.z+50})
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if noise1 > biome.plantlife_limit
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and noise2 <= biome.temp_min
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and noise2 >= biome.temp_max
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and noise3 <= biome.humidity_min
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and noise3 >= biome.humidity_max
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and plantslib:is_node_loaded(p_top) then
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local n_light = minetest.get_node_light(p_top, nil)
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if not (biome.avoid_nodes and biome.avoid_radius and minetest.find_node_near(p_top, biome.avoid_radius + math.random(-1.5,2), biome.avoid_nodes))
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and n_light >= biome.light_min
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and n_light <= biome.light_max
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and (not(biome.neighbors and biome.ncount) or #(minetest.find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, biome.neighbors)) > biome.ncount )
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and (not(biome.near_nodes and biome.near_nodes_count and biome.near_nodes_size) or #(minetest.find_nodes_in_area({x=pos.x-biome.near_nodes_size, y=pos.y-biome.near_nodes_vertical, z=pos.z-biome.near_nodes_size}, {x=pos.x+biome.near_nodes_size, y=pos.y+biome.near_nodes_vertical, z=pos.z+biome.near_nodes_size}, biome.near_nodes)) >= biome.near_nodes_count)
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and (not(biome.air_count and biome.air_size) or #(minetest.find_nodes_in_area({x=p_top.x-biome.air_size, y=p_top.y, z=p_top.z-biome.air_size}, {x=p_top.x+biome.air_size, y=p_top.y, z=p_top.z+biome.air_size}, "air")) >= biome.air_count)
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and pos.y >= biome.min_elevation
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and pos.y <= biome.max_elevation
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then
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local walldir = plantslib:find_adjacent_wall(p_top, biome.verticals_list)
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if biome.alt_wallnode and walldir then
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if n_top.name == "air" then
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minetest.set_node(p_top, { name = biome.alt_wallnode, param2 = walldir })
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end
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else
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local currentsurface = minetest.get_node(pos).name
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if currentsurface ~= "default:water_source"
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or (currentsurface == "default:water_source" and #(minetest.find_nodes_in_area({x=pos.x, y=pos.y-biome.depth_max-1, z=pos.z}, {x=pos.x, y=pos.y, z=pos.z}, {"default:dirt", "default:dirt_with_grass", "default:sand"})) > 0 )
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then
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local rnd = math.random(1, biome.spawn_plants_count)
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local plant_to_spawn = biome.spawn_plants[rnd]
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local fdir = biome.facedir
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if biome.random_facedir then
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fdir = math.random(biome.random_facedir[1],biome.random_facedir[2])
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end
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if type(biome.spawn_plants) == "string" then
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assert(loadstring(biome.spawn_plants.."(...)"))(pos)
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elseif not biome.spawn_on_side and not biome.spawn_on_bottom and not biome.spawn_replace_node then
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if n_top.name == "air" then
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minetest.set_node(p_top, { name = plant_to_spawn, param2 = fdir })
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end
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elseif biome.spawn_replace_node then
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minetest.set_node(pos, { name = plant_to_spawn, param2 = fdir })
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elseif biome.spawn_on_side then
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local onside = plantslib:find_open_side(pos)
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if onside then
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minetest.set_node(onside.newpos, { name = plant_to_spawn, param2 = onside.facedir })
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end
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elseif biome.spawn_on_bottom then
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if minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name == "air" then
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minetest.set_node({x=pos.x, y=pos.y-1, z=pos.z}, { name = plant_to_spawn, param2 = fdir} )
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end
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end
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end
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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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end
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-- The growing ABM
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function plantslib:grow_plants(opts)
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local options = opts
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options.height_limit = options.height_limit or 5
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options.ground_nodes = options.ground_nodes or { "default:dirt_with_grass" }
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options.grow_nodes = options.grow_nodes or { "default:dirt_with_grass" }
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options.seed_diff = options.seed_diff or 0
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if options.grow_delay*time_scale >= 1 then
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options.interval = options.grow_delay*time_scale
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else
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options.interval = 1
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end
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minetest.register_abm({
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nodenames = { options.grow_plant },
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interval = options.interval,
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chance = options.grow_chance,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
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local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
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local n_top = minetest.get_node(p_top)
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local n_bot = minetest.get_node(p_bot)
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local root_node = minetest.get_node({x=pos.x, y=pos.y-options.height_limit, z=pos.z})
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local walldir = nil
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if options.need_wall and options.verticals_list then
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walldir = plantslib:find_adjacent_wall(p_top, options.verticals_list)
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end
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if n_top.name == "air" and (not options.need_wall or (options.need_wall and walldir))
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then
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-- corner case for changing short junglegrass
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-- to dry shrub in desert
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if n_bot.name == options.dry_early_node and options.grow_plant == "junglegrass:short" then
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minetest.set_node(pos, { name = "default:dry_shrub" })
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elseif options.grow_vertically and walldir then
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if plantslib:search_downward(pos, options.height_limit, options.ground_nodes) then
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minetest.set_node(p_top, { name = options.grow_plant, param2 = walldir})
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end
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elseif not options.grow_result and not options.grow_function then
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minetest.remove_node(pos)
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else
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plantslib:replace_object(pos, options.grow_result, options.grow_function, options.facedir, options.seed_diff)
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end
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end
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end
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})
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end
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-- Function to decide how to replace a plant - either grow it, replace it with
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-- a tree, run a function, or die with an error.
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function plantslib:replace_object(pos, replacement, grow_function, walldir, seeddiff)
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local growtype = type(grow_function)
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if growtype == "table" then
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minetest.remove_node(pos)
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plantslib:grow_tree(pos, grow_function)
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return
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elseif growtype == "function" then
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local perlin_fertile_area = minetest.get_perlin(seeddiff, perlin_octaves, perlin_persistence, perlin_scale)
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local noise1 = perlin_fertile_area:get2d({x=pos.x, y=pos.z})
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local noise2 = plantslib.perlin_temperature:get2d({x=pos.x, y=pos.z})
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grow_function(pos,noise1,noise2,walldir)
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return
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elseif growtype == "string" then
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local perlin_fertile_area = minetest.get_perlin(seeddiff, perlin_octaves, perlin_persistence, perlin_scale)
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local noise1 = perlin_fertile_area:get2d({x=pos.x, y=pos.z})
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local noise2 = plantslib.perlin_temperature:get2d({x=pos.x, y=pos.z})
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assert(loadstring(grow_function.."(...)"))(pos,noise1,noise2,walldir)
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return
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elseif growtype == "nil" then
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minetest.set_node(pos, { name = replacement, param2 = walldir})
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return
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elseif growtype ~= "nil" and growtype ~= "string" and growtype ~= "table" then
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error("Invalid grow function "..dump(grow_function).." used on object at ("..dump(pos)..")")
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end
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end
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-- function to decide if a node has a wall that's in verticals_list{}
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-- returns wall direction of valid node, or nil if invalid.
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function plantslib:find_adjacent_wall(pos, verticals)
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local verts = dump(verticals)
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if string.find(verts, minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then return 3 end
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if string.find(verts, minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then return 2 end
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if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then return 5 end
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if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then return 4 end
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return nil
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end
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-- Function to search downward from the given position, looking for the first
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-- node that matches the ground table. Returns the new position, or nil if
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-- height limit is exceeded before finding it.
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function plantslib:search_downward(pos, heightlimit, ground)
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for i = 0, heightlimit do
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if string.find(dump(ground), minetest.get_node({x=pos.x, y=pos.y-i, z = pos.z}).name) then
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return {x=pos.x, y=pos.y-i, z = pos.z}
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end
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end
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return false
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end
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function plantslib:find_open_side(pos)
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if minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name == "air" then
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return {newpos = { x=pos.x-1, y=pos.y, z=pos.z }, facedir = 2}
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end
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if minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name == "air" then
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return {newpos = { x=pos.x+1, y=pos.y, z=pos.z }, facedir = 3}
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end
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if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z-1 }).name == "air" then
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return {newpos = { x=pos.x, y=pos.y, z=pos.z-1 }, facedir = 4}
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end
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if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z+1 }).name == "air" then
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return {newpos = { x=pos.x, y=pos.y, z=pos.z+1 }, facedir = 5}
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end
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return nil
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end
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-- spawn_tree() on generate is routed through here so that other mods can hook
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-- into it.
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function plantslib:generate_tree(pos, nodes_or_function_or_model)
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minetest.spawn_tree(pos, nodes_or_function_or_model)
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end
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-- and this one's for the call used in the growing code
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function plantslib:grow_tree(pos, nodes_or_function_or_model)
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minetest.spawn_tree(pos, nodes_or_function_or_model)
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end
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-- Check for infinite stacks
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if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
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plantslib.expect_infinite_stacks = false
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else
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plantslib.expect_infinite_stacks = true
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end
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-- read a field from a node's definition
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function plantslib:get_nodedef_field(nodename, fieldname)
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if not minetest.registered_nodes[nodename] then
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return nil
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end
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return minetest.registered_nodes[nodename][fieldname]
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end
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print("[Plants Lib] Loaded")
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minetest.after(0, function()
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print("[Plants Lib] Registered a total of "..(#plantslib.surfaceslist_aircheck)+(#plantslib.surfaceslist_no_aircheck).." surface types to be evaluated, spread")
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print("[Plants Lib] across "..#plantslib.actionslist_aircheck.." actions with air-checking and "..#plantslib.actionslist_no_aircheck.." actions without.")
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end)
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