forked from mtcontrib/plantlife_modpack
302 lines
11 KiB
Lua
302 lines
11 KiB
Lua
-- Plantlife library mod by Vanessa Ezekowitz
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-- 2013-01-18
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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.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 plantlife_limit = 0.1 -- compared against perlin noise. lower = more abundant
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-- Local functions
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math.randomseed(os.time())
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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 (n == nil) 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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-- Spawn plants using the map generator
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function plantslib:register_generate_plant(biome, funct_or_model)
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minetest.register_on_generated(plantslib:search_for_surfaces(minp, maxp, biome, funct_or_model))
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end
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function plantslib:search_for_surfaces(minp, maxp, biome, funct_or_model)
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return function(minp, maxp, blockseed)
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if biome.seed_diff == nil then biome.seed_diff = 0 end
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if biome.neighbors == nil then biome.neighbors = biome.surface end
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if biome.min_elevation == nil then biome.min_elevation = -31000 end
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if biome.max_elevation == nil then biome.max_elevation = 31000 end
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if biome.near_nodes_size == nil then biome.near_nodes_size = 0 end
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if biome.near_nodes_count == nil then biome.near_nodes_count = 1 end
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if biome.temp_min == nil then biome.temp_min = 1 end
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if biome.temp_max == nil then biome.temp_max = -1 end
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print("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 perlin2 = minetest.env:get_perlin(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
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local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
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local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
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if (biome.depth == nil 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 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 > 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 (biome.ncount == nil 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 (biome.near_nodes == nil or table.getn(minetest.env:find_nodes_in_area({x=pos.x-biome.near_nodes_size, y=pos.y-1, z=pos.z-biome.near_nodes_size}, {x=pos.x+biome.near_nodes_size, y=pos.y+1, z=pos.z+biome.near_nodes_size}, biome.near_nodes)) >= biome.near_nodes_count)
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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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print("Found "..num_in_biome_nodes.." surface nodes of type "..biome.surface.." in 5x5x5 mapblock volume at {"..dump(minp)..":"..dump(maxp).."} to check.")
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for i in ipairs(in_biome_nodes) do
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local pos = in_biome_nodes[i]
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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if minetest.env:find_node_near(p_top, biome.avoid_radius + math.random(-1.5,1.5), biome.avoid_nodes) == nil then
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if type(funct_or_model) == "table" then
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print("Spawn tree at {"..dump(pos).."}")
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minetest.env:spawn_tree(pos, funct_or_model)
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else
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print("Call function: "..funct_or_model.."("..dump(pos)..")")
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minetest.log("verbose", "Call function: "..funct_or_model.."("..dump(pos)..")")
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assert(loadstring(funct_or_model.."("..dump(pos)..")"))()
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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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-- The spawning ABM
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function plantslib:spawn_on_surfaces(
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sdelay,
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splant,
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sradius,
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schance,
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ssurface,
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savoid,
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seed_diff,
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lightmin,
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lightmax,
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nneighbors,
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ocount,
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facedir,
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depthmax,
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altmin,
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altmax,
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sbiome,
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sbiomesize,
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sbiomecount,
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airsize,
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aircount,
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tempmin,
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tempmax)
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if seed_diff == nil then seed_diff = 0 end
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if lightmin == nil then lightmin = 0 end
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if lightmax == nil then lightmax = LIGHT_MAX end
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if nneighbors == nil then nneighbors = ssurface end
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if ocount == nil then ocount = -1 end
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if depthmax == nil then depthmax = 1 end
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if altmin == nil then altmin = -31000 end
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if altmax == nil then altmax = 31000 end
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if sbiome == nil then sbiome = "" end
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if sbiomesize == nil then sbiomesize = 0 end
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if sbiomecount == nil then sbiomecount = 1 end
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if airsize == nil then airsize = 0 end
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if aircount == nil then aircount = 1 end
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if tempmin == nil then tempmin = -2 end
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if tempmax == nil then tempmax = 2 end
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minetest.register_abm({
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nodenames = { ssurface },
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interval = sdelay,
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chance = schance,
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neighbors = nneighbors,
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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(seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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local perlin2 = minetest.env:get_perlin(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
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local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
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local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
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if noise1 > plantlife_limit
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and noise2 >= tempmin
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and noise2 <= tempmax
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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 minetest.env:find_node_near(p_top, sradius + math.random(-1.5,2), savoid) == nil
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and n_light >= lightmin
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and n_light <= lightmax
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and (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}, nneighbors)) > ocount
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or ocount == -1)
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and (table.getn(minetest.env:find_nodes_in_area({x=pos.x-sbiomesize, y=pos.y-1, z=pos.z-sbiomesize}, {x=pos.x+sbiomesize, y=pos.y+1, z=pos.z+sbiomesize}, sbiome)) >= sbiomecount
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or sbiome == "")
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and table.getn(minetest.env:find_nodes_in_area({x=p_top.x-airsize, y=p_top.y, z=p_top.z-airsize}, {x=p_top.x+airsize, y=p_top.y, z=p_top.z+airsize}, "air")) >= aircount
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and pos.y >= altmin
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and pos.y <= altmax
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then
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local walldir = plantslib:plant_valid_wall(p_top)
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if splant == "poisonivy:seedling" and walldir ~= nil then
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minetest.log("verbose", "Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
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minetest.env:add_node(p_top, { name = "poisonivy:climbing", param2 = walldir })
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else
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local deepnode = minetest.env:get_node({ x = pos.x, y = pos.y-depthmax-1, z = pos.z }).name
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if (ssurface ~= "default:water_source")
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or (ssurface == "default:water_source"
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and deepnode ~= "default:water_source") then
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minetest.log("verbose", "Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
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minetest.env:add_node(p_top, { name = splant, param2 = facedir })
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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(
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gdelay,
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gchance,
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gplant,
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gresult,
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dry_early_node,
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grow_nodes,
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facedir,
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need_wall,
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grow_vertically,
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height_limit,
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ground_nodes,
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grow_function,
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seed_diff)
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if need_wall ~= true then need_wall = false end
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if grow_vertically ~= true then grow_vertically = false end
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if height_limit == nil then height_limit = 62000 end
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if ground_node == nil then ground_nodes = { "default:dirt_with_grass" } end
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minetest.register_abm({
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nodenames = { gplant },
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interval = gdelay,
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chance = gchance,
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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 groundnode = minetest.env:get_node({x=pos.x, y=pos.y-height_limit, z=pos.z})
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if grow_function == nil then
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if string.find(dump(grow_nodes), n_bot.name) ~= nil and n_top.name == "air" then
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if grow_vertically then
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if plantslib:find_first_node(pos, height_limit, ground_nodes) ~= nil then
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if need_wall then
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local walldir=plantslib:plant_valid_wall(p_top)
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if walldir ~= nil then
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minetest.log("verbose", "Grow: "..gplant.." upwards to ("..dump(p_top)..") on wall "..walldir)
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minetest.env:add_node(p_top, { name = gplant, param2 = walldir })
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end
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else
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minetest.log("verbose", "Grow: "..gplant.." upwards to ("..dump(p_top)..")")
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minetest.env:add_node(p_top, { name = gplant })
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end
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end
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-- corner case for changing short junglegrass to dry shrub in desert
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elseif n_bot.name == dry_early_node and gplant == "junglegrass:short" then
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minetest.log("verbose", "Die: "..gplant.." 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 gresult == nil then
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minetest.log("verbose", "Die: "..gplant.." at ("..dump(pos)..")")
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minetest.env:remove_node(pos)
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elseif gresult ~= nil then
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minetest.log("verbose", "Grow: "..gplant.." becomes "..gresult.." at ("..dump(pos)..")")
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if facedir == nil then
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minetest.env:add_node(pos, { name = gresult })
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else
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minetest.env:add_node(pos, { name = gresult, param2 = facedir })
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end
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end
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end
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else
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if seed_diff == nil then seed_diff = 0 end
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local perlin1 = minetest.env:get_perlin(seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
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local perlin2 = minetest.env:get_perlin(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
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local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
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local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
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minetest.log("verbose", "Call function: "..grow_function.."("..dump(pos)..","..noise1..","..noise2..")")
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assert(loadstring(grow_function.."("..dump(pos)..","..noise1..","..noise2..")"))()
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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 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:plant_valid_wall(wallpos)
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local walldir = nil
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local verts = dump(verticals_list)
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local testpos = { x = wallpos.x-1, y = wallpos.y, z = wallpos.z }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=3 end
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local testpos = { x = wallpos.x+1, y = wallpos.y, z = wallpos.z }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=2 end
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local testpos = { x = wallpos.x , y = wallpos.y, z = wallpos.z-1 }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=5 end
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local testpos = { x = wallpos.x , y = wallpos.y, z = wallpos.z+1 }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=4 end
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return walldir
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end
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-- Function to search straight down from (pos) to find first node in match list.
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function plantslib:find_first_node(pos, height_limit, nodelist)
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for i = 1, height_limit do
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n = minetest.env:get_node({x=pos.x, y=pos.y-i, z=pos.z})
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if string.find(dump(nodelist),n.name) ~= nil then
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return n.name
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end
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end
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return nil
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end
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print("[Plantlife] Loaded!")
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