forked from mtcontrib/plantlife_modpack
new mapgen algorithm - do the surface eval in one pass.
This commit is contained in:
Vanessa Ezekowitz
parent
d56516de3a
commit
c636c62480
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@ -99,24 +99,78 @@ 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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minetest.register_on_generated(plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or_model))
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plantslib.surfaces_list = {}
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plantslib.actions_list = {}
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plantslib.surface_nodes = {}
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local function search_table(t, s)
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for i in ipairs(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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function plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or_model)
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-- register the list of surfaces to spawn stuff on, filtering out all duplicates.
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function plantslib:register_generate_plant(biomedef, node_or_function_or_model)
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if biomedef.check_air == false then
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print("==>> Called legacy mapgen code for "..dump(node_or_function_or_model))
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minetest.register_on_generated(plantslib:generate_block_legacy(minp, maxp, biomedef, node_or_function_or_model))
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else
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table.insert(plantslib.actions_list, { biomedef, node_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 not search_table(plantslib.surfaces_list, s) then
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table.insert(plantslib.surfaces_list, s)
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end
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else
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for _, s in ipairs(biomedef.surface) do
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if not search_table(plantslib.surfaces_list, s) then
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table.insert(plantslib.surfaces_list, 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:generate_block(minp, maxp, blockseed)
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return function(minp, maxp, blockseed)
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local biome = biomedef
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-- use the block hash as a unique key into the surface_nodes
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-- table, so that we can write the table thread-safely.
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local blockhash = minetest.hash_node_position(minp)
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local search_area = minetest.find_nodes_in_area(minp, maxp, plantslib.surfaces_list)
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-- search the generated block for surfaces
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plantslib.surface_nodes.blockhash = {}
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for _, pos in ipairs(search_area) do
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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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table.insert(plantslib.surface_nodes.blockhash, pos)
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end
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end
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for action in ipairs(plantslib.actions_list) do
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local biome = plantslib.actions_list[action][1]
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local node_or_function_or_model = plantslib.actions_list[action][2]
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plantslib:set_defaults(biome)
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local searchnodes = minetest.find_nodes_in_area(minp, maxp, biome.surface)
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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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for _ , pos in ipairs(searchnodes) do
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for _ , pos in ipairs(plantslib.surface_nodes.blockhash) do
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local perlin1 = minetest.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.get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name ~= biome.surface)
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local noise1 = perlin1: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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if ((not biome.depth and string.find(biome_surfaces_string, minetest.get_node(pos).name)) or (biome.depth and not string.find(biome_surfaces_string, minetest.get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name)))
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and (not biome.check_air or (biome.check_air and 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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@ -134,6 +188,8 @@ function plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or
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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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@ -194,8 +250,11 @@ function plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or
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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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minetest.register_on_generated(plantslib:generate_block(minp, maxp, blockseed))
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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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@ -447,5 +506,100 @@ function plantslib:get_nodedef_field(nodename, fieldname)
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return minetest.registered_nodes[nodename][fieldname]
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end
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-- The old version of the mapgen spawner, for mods that require re-checking
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-- the map on each call.
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function plantslib:generate_block_legacy(minp, maxp, biomedef, node_or_function_or_model)
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return function(minp, maxp, blockseed)
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local biome = biomedef
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plantslib:set_defaults(biome)
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local searchnodes = minetest.find_nodes_in_area(minp, maxp, biome.surface)
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local in_biome_nodes = {}
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for _ , pos in ipairs(searchnodes) do
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local perlin1 = minetest.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.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.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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table.insert(in_biome_nodes, pos)
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end
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end
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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(node_or_function_or_model)
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if objtype == "table" then
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plantslib:generate_tree(pos, node_or_function_or_model)
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spawned = true
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elseif objtype == "string" and
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minetest.registered_nodes[node_or_function_or_model] then
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minetest.add_node(p_top, { name = node_or_function_or_model })
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spawned = true
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elseif objtype == "function" then
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node_or_function_or_model(pos)
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spawned = trueload
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elseif objtype == "string" and pcall(loadstring(("return %s(...)"):
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format(node_or_function_or_model)),pos) then
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spawned = true
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else
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print("Ignored invalid definition for object "..dump(node_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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end
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print(S("[Plantlife Library] Loaded"))
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