mirror of
https://github.com/mt-mods/plantlife_modpack.git
synced 2024-11-10 04:10:23 +01:00
443 lines
19 KiB
Lua
443 lines
19 KiB
Lua
-- Plantlife library mod by Vanessa Ezekowitz
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-- last revision, 2013-01-24
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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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local DEBUG = false --... except if you want to spam the console with debugging info :-)
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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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--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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local function dump_pos(pos)
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return "{x="..pos.x..",y="..pos.y..",z="..pos.z.."}"
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end
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function plantslib:is_node_loaded(node_pos)
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n = minetest.env: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: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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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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-- Spawn plants using the map generator
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function plantslib:register_generate_plant(biomedef, node_or_function_or_model)
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plantslib:dbg("Registered mapgen spawner:")
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plantslib:dbg(dump(biomedef))
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minetest.register_on_generated(plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or_model))
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end
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function plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or_model)
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return function(minp, maxp, blockseed)
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local t1=os.clock()
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local biome = biomedef
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plantslib:set_defaults(biome)
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plantslib:dbg("Started checking generated mapblock volume...")
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local searchnodes = minetest.env:find_nodes_in_area(minp, maxp, biome.surface)
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local in_biome_nodes = {}
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local num_in_biome_nodes = 0
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for i in ipairs(searchnodes) do
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local pos = searchnodes[i]
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local perlin1 = minetest.env:get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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local noise1 = perlin1: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 (not biome.depth or minetest.env:get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name ~= biome.surface)
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and (not biome.check_air or (biome.check_air and minetest.env: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 table.getn(minetest.env: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 table.getn(minetest.env: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.env:get_node({x=pos.x, y=pos.y-1, z=pos.z}).name) )
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then
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table.insert(in_biome_nodes, pos)
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num_in_biome_nodes = num_in_biome_nodes + 1
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end
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end
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plantslib:dbg("Found "..num_in_biome_nodes.." surface nodes of type(s) "..dump(biome.surface).." in 5x5x5 mapblock volume at {"..dump(minp)..":"..dump(maxp).."} to check.")
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if num_in_biome_nodes > 0 then
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plantslib:dbg("Calculated maximum of "..math.min(biome.max_count*3, num_in_biome_nodes).." nodes to be checked in that list.")
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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_radius and biome.avoid_nodes) or not minetest.env:find_node_near(p_top, biome.avoid_radius + math.random(-1.5,1.5), biome.avoid_nodes) then
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spawned = true
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if biome.delete_above then
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minetest.env:remove_node(p_top)
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minetest.env: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.env:remove_node({x=p_top.x-1, y=p_top.y, z=p_top.z})
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minetest.env:remove_node({x=p_top.x+1, y=p_top.y, z=p_top.z})
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minetest.env:remove_node({x=p_top.x, y=p_top.y, z=p_top.z-1})
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minetest.env:remove_node({x=p_top.x, y=p_top.y, z=p_top.z+1})
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minetest.env:remove_node({x=p_top.x-1, y=p_top.y+1, z=p_top.z})
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minetest.env:remove_node({x=p_top.x+1, y=p_top.y+1, z=p_top.z})
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minetest.env:remove_node({x=p_top.x, y=p_top.y+1, z=p_top.z-1})
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minetest.env: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.env:remove_node(pos)
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end
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if type(node_or_function_or_model) == "table" then
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plantslib:dbg("Spawn tree at {"..dump(pos).."}")
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plantslib:generate_tree(pos, node_or_function_or_model)
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elseif type(node_or_function_or_model) == "string" then
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if not minetest.registered_nodes[node_or_function_or_model] then
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plantslib:dbg("Call function: "..node_or_function_or_model.."("..dump_pos(pos)..")")
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local t2=os.clock()
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assert(loadstring(node_or_function_or_model.."("..dump_pos(pos)..")"))()
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plantslib:dbg("Executed that function in ".. (os.clock()-t2)*1000 .."ms")
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else
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plantslib:dbg("Add node: "..node_or_function_or_model.." at ("..dump(p_top)..")")
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minetest.env:add_node(p_top, { name = node_or_function_or_model })
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end
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end
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else
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tries = tries + 1
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plantslib:dbg("No room to spawn object at {"..dump(pos).."} -- trying again elsewhere")
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end
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end
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if tries == 2 then
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plantslib:dbg("Unable to spawn that object. Giving up on it.")
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end
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end
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end
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plantslib:dbg("Evaluated/populated chunk in ".. (os.clock()-t1)*1000 .."ms")
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end
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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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plantslib:set_defaults(biome)
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biome.spawn_plants_count = table.getn(biome.spawn_plants)
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plantslib:dbg("Registered spawning ABM:")
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plantslib:dbg(dump(biome))
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plantslib:dbg("Number of trigger nodes in this ABM: "..biome.spawn_plants_count )
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minetest.register_abm({
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nodenames = biome.spawn_surfaces,
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interval = biome.spawn_delay,
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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.env:get_node(p_top)
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local perlin1 = minetest.env:get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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local noise1 = perlin1: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.env:get_node_light(p_top, nil)
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if (not(biome.avoid_nodes and biome.avoid_radius) or not minetest.env: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 table.getn(minetest.env: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 table.getn(minetest.env: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 table.getn(minetest.env: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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plantslib:dbg("Spawn: "..biome.alt_wallnode.." on top of ("..dump(pos)..") against wall "..walldir)
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minetest.env:add_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.env:get_node(pos).name
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if currentsurface ~= "default:water_source"
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or (currentsurface == "default:water_source" and table.getn(minetest.env: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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plantslib:dbg("Chose entry number "..rnd.." of "..biome.spawn_plants_count)
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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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plantslib:dbg("Gave it a random facedir: "..fdir)
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end
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if type(spawn_plants) == "string" then
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plantslib:dbg("Call function: "..spawn_plants.."("..dump_pos(pos)..")")
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assert(loadstring(spawn_plants.."("..dump_pos(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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plantslib:dbg("Spawn: "..plant_to_spawn.." on top of ("..dump(pos).."); facedir="..fdir)
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minetest.env:add_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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plantslib:dbg("Spawn: "..plant_to_spawn.." to replace "..minetest.env:get_node(pos).name.." at ("..dump(pos)..")")
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minetest.env:add_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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plantslib:dbg("Spawn: "..plant_to_spawn.." at side of ("..dump(pos).."), facedir "..onside.facedir.."")
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minetest.env:add_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.env:get_node({x=pos.x, y=pos.y-1, z=pos.z}).name == "air" then
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plantslib:dbg("Spawn: "..plant_to_spawn.." on bottom of ("..dump(pos)..")")
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minetest.env:add_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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plantslib:dbg("Registered growing ABM:")
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plantslib:dbg(dump(options))
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minetest.register_abm({
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nodenames = { options.grow_plant },
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interval = options.grow_delay,
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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.env:get_node(p_top)
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local n_bot = minetest.env:get_node(p_bot)
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local root_node = minetest.env: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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plantslib:dbg("Die: "..options.grow_plant.." becomes default:dry_shrub at ("..dump(pos)..")")
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minetest.env:add_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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plantslib:dbg("Grow "..options.grow_plant.." vertically to "..dump(p_top))
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minetest.env:add_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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plantslib:dbg("Die: "..options.grow_plant.." at ("..dump(pos)..")")
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minetest.env: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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plantslib:dbg("replace_object called, growtype="..dump(grow_function))
|
|
if growtype == "table" then
|
|
plantslib:dbg("Grow: spawn tree at "..dump(pos))
|
|
minetest.env:remove_node(pos)
|
|
plantslib:grow_tree(pos, grow_function)
|
|
return
|
|
elseif growtype == "string" then
|
|
local perlin1 = minetest.env:get_perlin(seeddiff, perlin_octaves, perlin_persistence, perlin_scale)
|
|
local noise1 = perlin1:get2d({x=pos.x, y=pos.z})
|
|
local noise2 = plantslib.perlin_temperature:get2d({x=pos.x, y=pos.z})
|
|
plantslib:dbg("Grow: call function "..grow_function.."("..dump_pos(pos)..","..noise1..","..noise2..","..dump(walldir)..")")
|
|
assert(loadstring(grow_function.."("..dump_pos(pos)..","..noise1..","..noise2..","..dump(walldir)..")"))()
|
|
return
|
|
elseif growtype == "nil" then
|
|
plantslib:dbg("Grow: place "..replacement.." at ("..dump(pos)..") on wall "..dump(walldir))
|
|
minetest.env:add_node(pos, { name = replacement, param2 = walldir})
|
|
return
|
|
elseif growtype ~= "nil" and growtype ~= "string" and growtype ~= "table" then
|
|
error("Invalid grow function "..dump(grow_function).." used on object at ("..dump(pos)..")")
|
|
end
|
|
end
|
|
|
|
-- function to decide if a node has a wall that's in verticals_list{}
|
|
-- returns wall direction of valid node, or nil if invalid.
|
|
|
|
function plantslib:find_adjacent_wall(pos, verticals)
|
|
local verts = dump(verticals)
|
|
if string.find(verts, minetest.env:get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then return 3 end
|
|
if string.find(verts, minetest.env:get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then return 2 end
|
|
if string.find(verts, minetest.env:get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then return 5 end
|
|
if string.find(verts, minetest.env:get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then return 4 end
|
|
return nil
|
|
end
|
|
|
|
-- Function to search downward from the given position, looking for the first
|
|
-- node that matches the ground table. Returns the new position, or nil if
|
|
-- height limit is exceeded before finding it.
|
|
|
|
function plantslib:search_downward(pos, heightlimit, ground)
|
|
for i = 0, heightlimit do
|
|
if string.find(dump(ground), minetest.env:get_node({x=pos.x, y=pos.y-i, z = pos.z}).name) then
|
|
return {x=pos.x, y=pos.y-i, z = pos.z}
|
|
end
|
|
end
|
|
return false
|
|
end
|
|
|
|
function plantslib:find_open_side(pos)
|
|
if minetest.env:get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name == "air" then
|
|
return {newpos = { x=pos.x-1, y=pos.y, z=pos.z }, facedir = 2}
|
|
end
|
|
if minetest.env:get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name == "air" then
|
|
return {newpos = { x=pos.x+1, y=pos.y, z=pos.z }, facedir = 3}
|
|
end
|
|
if minetest.env:get_node({ x=pos.x, y=pos.y, z=pos.z-1 }).name == "air" then
|
|
return {newpos = { x=pos.x, y=pos.y, z=pos.z-1 }, facedir = 4}
|
|
end
|
|
if minetest.env:get_node({ x=pos.x, y=pos.y, z=pos.z+1 }).name == "air" then
|
|
return {newpos = { x=pos.x, y=pos.y, z=pos.z+1 }, facedir = 5}
|
|
end
|
|
return nil
|
|
end
|
|
|
|
-- spawn_tree() on generate is routed through here so that other mods can hook
|
|
-- into it.
|
|
|
|
function plantslib:generate_tree(pos, node_or_function_or_model)
|
|
local t=os.clock()
|
|
minetest.env:spawn_tree(pos, node_or_function_or_model)
|
|
plantslib:dbg("Generated one tree in ".. (os.clock()-t)*1000 .."ms")
|
|
end
|
|
|
|
-- and this one's for the call used in the growing code
|
|
|
|
function plantslib:grow_tree(pos, node_or_function_or_model)
|
|
local t=os.clock()
|
|
minetest.env:spawn_tree(pos, node_or_function_or_model)
|
|
plantslib:dbg("Generated one tree in ".. (os.clock()-t)*1000 .."ms")
|
|
end
|
|
|
|
|
|
|
|
print("[Plantlife Library] Loaded")
|