406 lines
14 KiB
Lua
406 lines
14 KiB
Lua
mcl_structures.registered_structures = {}
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local place_queue = {}
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local disabled_structures = minetest.settings:get("mcl_disabled_structures")
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if disabled_structures then disabled_structures = disabled_structures:split(",")
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else disabled_structures = {} end
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local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
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local logging = minetest.settings:get_bool("mcl_logging_structures",true)
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local rotations = {
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"0",
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"90",
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"180",
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"270"
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}
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function mcl_structures.is_disabled(structname)
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return table.indexof(disabled_structures,structname) ~= -1
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end
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local function ecb_place(blockpos, action, calls_remaining, param)
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if calls_remaining >= 1 then return end
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minetest.place_schematic(param.pos, param.schematic, param.rotation, param.replacements, param.force_placement, param.flags)
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if param.after_placement_callback and param.p1 and param.p2 then
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param.after_placement_callback(param.p1, param.p2, param.size, param.rotation, param.pr, param.callback_param)
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end
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end
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function mcl_structures.place_schematic(pos, schematic, rotation, replacements, force_placement, flags, after_placement_callback, pr, callback_param)
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if type(schematic) ~= "table" and not mcl_util.file_exists(schematic) then
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minetest.log("warning","[mcl_structures] schematic file "..tostring(schematic).." does not exist.")
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return end
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local s = loadstring(minetest.serialize_schematic(schematic, "lua", {lua_use_comments = false, lua_num_indent_spaces = 0}) .. " return schematic")()
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if s and s.size then
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local x, z = s.size.x, s.size.z
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if rotation then
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if rotation == "random" and pr then
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rotation = rotations[pr:next(1,#rotations)]
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end
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if rotation == "random" then
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x = math.max(x, z)
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z = x
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elseif rotation == "90" or rotation == "270" then
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x, z = z, x
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end
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end
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local p1 = {x=pos.x , y=pos.y , z=pos.z }
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local p2 = {x=pos.x+x-1, y=pos.y+s.size.y-1, z=pos.z+z-1}
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minetest.log("verbose", "[mcl_structures] size=" ..minetest.pos_to_string(s.size) .. ", rotation=" .. tostring(rotation) .. ", emerge from "..minetest.pos_to_string(p1) .. " to " .. minetest.pos_to_string(p2))
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local param = {pos=vector.new(pos), schematic=s, rotation=rotation, replacements=replacements, force_placement=force_placement, flags=flags, p1=p1, p2=p2, after_placement_callback = after_placement_callback, size=vector.new(s.size), pr=pr, callback_param=callback_param}
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minetest.emerge_area(p1, p2, ecb_place, param)
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return true
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end
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end
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function mcl_structures.get_struct(file)
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local localfile = modpath.."/schematics/"..file
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local file, errorload = io.open(localfile, "rb")
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if errorload then
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minetest.log("error", "[mcl_structures] Could not open this struct: "..localfile)
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return nil
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end
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local allnode = file:read("*a")
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file:close()
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return allnode
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end
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-- Call on_construct on pos.
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-- Useful to init chests from formspec.
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local function init_node_construct(pos)
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local node = minetest.get_node(pos)
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local def = minetest.registered_nodes[node.name]
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if def and def.on_construct then
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def.on_construct(pos)
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return true
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end
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return false
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end
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mcl_structures.init_node_construct = init_node_construct
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function mcl_structures.fill_chests(p1,p2,loot,pr)
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for it,lt in pairs(loot) do
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local nodes = minetest.find_nodes_in_area(p1, p2, it)
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for _,p in pairs(nodes) do
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local lootitems = mcl_loot.get_multi_loot(lt, pr)
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mcl_structures.init_node_construct(p)
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local meta = minetest.get_meta(p)
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local inv = meta:get_inventory()
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mcl_loot.fill_inventory(inv, "main", lootitems, pr)
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end
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end
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end
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local function generate_loot(pos, def, pr)
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local hl = def.sidelen
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local p1 = vector.offset(pos,-hl,-hl,-hl)
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local p2 = vector.offset(pos,hl,hl,hl)
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if def.loot then mcl_structures.fill_chests(p1,p2,def.loot,pr) end
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end
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function mcl_structures.construct_nodes(p1,p2,nodes)
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local nn=minetest.find_nodes_in_area(p1,p2,nodes)
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for _,p in pairs(nn) do
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mcl_structures.init_node_construct(p)
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end
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end
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local function construct_nodes(pos,def,pr)
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return mcl_structures.construct_nodes(vector.offset(pos,-def.sidelen/2,0,-def.sidelen/2),vector.offset(pos,def.sidelen/2,def.sidelen,def.sidelen/2))
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end
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function mcl_structures.find_lowest_y(pp)
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local y = 31000
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for _,p in pairs(pp) do
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if p.y < y then y = p.y end
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end
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return y
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end
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function mcl_structures.find_highest_y(pp)
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local y = -31000
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for _,p in pairs(pp) do
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if p.y > y then y = p.y end
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end
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return y
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end
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local function smooth_cube(nn,pos,plane,amnt)
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local r = {}
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local amnt = amnt or 9
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table.sort(nn,function(a, b)
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if false or plane then
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return vector.distance(vector.new(pos.x,0,pos.z), vector.new(a.x,0,a.z)) < vector.distance(vector.new(pos.x,0,pos.z), vector.new(b.x,0,b.z))
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else
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return vector.distance(pos, a) < vector.distance(pos, b)
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end
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end)
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for i=1,math.max(1,#nn-amnt) do table.insert(r,nn[i]) end
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return r
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end
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local function find_ground(pos,nn,gn)
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local r = 0
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for _,v in pairs(nn) do
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local p=vector.new(v)
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repeat
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local n = minetest.get_node(p).name
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p = vector.offset(p,0,-1,0)
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until not n or n == "mcl_core:bedrock" or n == "ignore" or n == gn
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--minetest.log(tostring(pos.y - p.y))
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if pos.y - p.y > r then r = pos.y - p.y end
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end
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return r
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end
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local function get_foundation_nodes(ground_p1,ground_p2,pos,sidelen,node_stone)
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local replace = {"air","group:liquid","mcl_core:snow","group:tree","group:leaves","group:plant","grass_block","group:dirt"}
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local depth = find_ground(pos,minetest.find_nodes_in_area(ground_p1,ground_p2,replace),node_stone)
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local nn = smooth_cube(minetest.find_nodes_in_area(vector.offset(ground_p1,0,-1,0),vector.offset(ground_p2,0,-depth,0),replace),vector.offset(pos,0,-depth,0),true,sidelen * 64)
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local stone = {}
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local filler = {}
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local top = {}
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local dust = {}
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for l,v in pairs(nn) do
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if v.y == ground_p1.y - 1 then
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table.insert(filler,v)
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table.insert(top,vector.offset(v,0,1,0))
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table.insert(dust,vector.offset(v,0,2,0))
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elseif v.y < ground_p1.y -1 and v.y > ground_p2.y -4 then table.insert(filler,v)
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elseif v.y < ground_p2.y - 3 and v.y > ground_p2.y -5 then
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if math.random(3) == 1 then
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table.insert(filler,v)
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else
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table.insert(stone,v)
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end
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else
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table.insert(stone,v)
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end
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end
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return stone,filler,top,dust
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end
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local function foundation(ground_p1,ground_p2,pos,sidelen)
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local node_stone = "mcl_core:stone"
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local node_filler = "mcl_core:dirt"
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local node_top = "mcl_core:dirt_with_grass" or minetest.get_node(ground_p1).name
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local node_dust = nil
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if minetest.get_mapgen_setting("mg_name") ~= "v6" then
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local b = minetest.registered_biomes[minetest.get_biome_name(minetest.get_biome_data(pos).biome)]
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--minetest.log(dump(b.node_top))
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if b then
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if b.node_top then node_top = b.node_top end
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if b.node_filler then node_filler = b.node_filler end
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if b.node_stone then node_stone = b.node_stone end
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if b.node_dust then node_dust = b.node_dust end
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end
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end
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local stone,filler,top,dust = get_foundation_nodes(ground_p1,ground_p2,pos,sidelen,node_stone)
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minetest.bulk_set_node(top,{name=node_top},node_stone)
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if node_dust then
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minetest.bulk_set_node(dust,{name=node_dust})
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end
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minetest.bulk_set_node(filler,{name=node_filler})
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minetest.bulk_set_node(stone,{name=node_stone})
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end
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local function process_queue()
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if #place_queue < 1 then return end
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local s = table.remove(place_queue)
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mcl_structures.place_schematic(s.pos, s.file, s.rot, nil, true, "place_center_x,place_center_z",function(s)
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if s.after_place then
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s.after_place(s.pos,s.def,s.pr)
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end
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end,s.pr)
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minetest.after(0.5,process_queue)
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end
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function mcl_structures.spawn_mobs(mob,spawnon,p1,p2,pr,n)
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n = n or 1
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local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
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table.shuffle(sp)
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for i,node in pairs(sp) do
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if not peaceful and i < n then
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local pos = vector.offset(node,0,1,0)
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if pos then
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minetest.add_entity(pos,mob)
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end
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end
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minetest.get_meta(node):set_string("spawnblock","yes")
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end
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end
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function mcl_structures.place_structure(pos, def, pr, blockseed)
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if not def then return end
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if not rot then rot = "random" end
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local log_enabled = logging and not def.terrain_feature
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local y_offset = 0
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if type(def.y_offset) == "function" then
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y_offset = def.y_offset(pr)
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elseif def.y_offset then
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y_offset = def.y_offset
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end
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local pp = vector.offset(pos,0,y_offset,0)
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if def.solid_ground and def.sidelen then
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local ground_p1 = vector.offset(pos,-def.sidelen/2,-1,-def.sidelen/2)
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local ground_p2 = vector.offset(pos,def.sidelen/2,-1,def.sidelen/2)
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local solid = minetest.find_nodes_in_area(ground_p1,ground_p2,{"group:solid"})
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if #solid < ( def.sidelen * def.sidelen ) then
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if def.make_foundation then
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foundation(vector.offset(pos,-def.sidelen/2 - 3,-1,-def.sidelen/2 - 3),vector.offset(pos,def.sidelen/2 + 3,-1,def.sidelen/2 + 3),pos,def.sidelen)
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else
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if log_enabled then
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minetest.log("warning","[mcl_structures] "..def.name.." at "..minetest.pos_to_string(pp).." not placed. No solid ground.")
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end
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return false
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end
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end
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end
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if def.on_place and not def.on_place(pos,def,pr,blockseed) then
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if log_enabled then
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minetest.log("warning","[mcl_structures] "..def.name.." at "..minetest.pos_to_string(pp).." not placed. Conditions not satisfied.")
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end
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return false
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end
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if def.filenames then
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if #def.filenames <= 0 then return false end
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local r = pr:next(1,#def.filenames)
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local file = def.filenames[r]
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if file then
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local rot = rotations[pr:next(1,#rotations)]
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local ap = function(pos,def,pr,blockseed) end
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if def.daughters then
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for _,d in pairs(def.daughters) do
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local p = vector.add(pp,d.pos)
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ap = function(pos,def,pr,blockseed)
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mcl_structures.place_schematic(pos, d.files[pr:next(1,#d.files)], rot, nil, true, "place_center_x,place_center_z",function()
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if def.loot then generate_loot(pp,def,pr,blockseed) end
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if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
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if def.after_place then
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def.after_place(pos,def,pr)
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end
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end,pr)
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end
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end
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elseif def.after_place then
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ap = def.after_place
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end
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mcl_structures.place_schematic(pp, file, rot, def.replacements, true, "place_center_x,place_center_z",function(p1, p2, size, rotation)
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if not def.daughters then
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if def.loot then generate_loot(pp,def,pr,blockseed) end
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if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
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end
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return ap(pp,def,pr,blockseed,p1,p2,size,rotation)
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end,pr)
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if log_enabled then
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minetest.log("action","[mcl_structures] "..def.name.." placed at "..minetest.pos_to_string(pp))
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end
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return true
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end
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elseif def.place_func and def.place_func(pp,def,pr,blockseed) then
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if not def.after_place or ( def.after_place and def.after_place(pp,def,pr,blockseed) ) then
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if def.loot then generate_loot(pp,def,pr,blockseed) end
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if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
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if log_enabled then
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minetest.log("action","[mcl_structures] "..def.name.." placed at "..minetest.pos_to_string(pp))
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end
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return true
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end
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end
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if log_enabled then
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minetest.log("warning","[mcl_structures] placing "..def.name.." failed at "..minetest.pos_to_string(pos))
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end
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end
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function mcl_structures.register_structure(name,def,nospawn) --nospawn means it will be placed by another (non-nospawn) structure that contains it's structblock i.e. it will not be placed by mapgen directly
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if mcl_structures.is_disabled(name) then return end
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local structblock = "mcl_structures:structblock_"..name
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local flags = "place_center_x, place_center_z, force_placement"
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local y_offset = 0
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local sbgroups = { structblock = 1, not_in_creative_inventory=1 }
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if def.flags then flags = def.flags end
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def.name = name
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if nospawn then
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sbgroups.structblock = nil
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sbgroups.structblock_lbm = 1
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else
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if def.place_on then
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minetest.register_on_mods_loaded(function() --make sure all previous decorations and biomes have been registered
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def.deco = minetest.register_decoration({
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name = "mcl_structures:deco_"..name,
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decoration = structblock,
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deco_type = "simple",
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place_on = def.place_on,
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spawn_by = def.spawn_by,
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num_spawn_by = def.num_spawn_by,
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sidelen = 80,
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fill_ratio = def.fill_ratio,
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noise_params = def.noise_params,
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flags = flags,
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biomes = def.biomes,
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y_max = def.y_max,
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y_min = def.y_min
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})
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minetest.register_node(":"..structblock, {drawtype="airlike", walkable = false, pointable = false,groups = sbgroups,sunlight_propagates = true,})
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def.structblock = structblock
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def.deco_id = minetest.get_decoration_id("mcl_structures:deco_"..name)
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minetest.set_gen_notify({decoration=true}, { def.deco_id })
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--catching of gennotify happens in mcl_mapgen_core
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end)
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end
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end
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mcl_structures.registered_structures[name] = def
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end
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local structure_spawns = {}
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function mcl_structures.register_structure_spawn(def)
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--name,y_min,y_max,spawnon,biomes
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minetest.register_abm({
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label = "Spawn "..def.name,
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nodenames = def.spawnon,
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min_y = def.y_min or -31000,
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max_y = def.y_max or 31000,
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interval = 15,
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chance = 3,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p = vector.offset(pos,0,1,0)
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if active_object_count > 7 then return end
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if minetest.get_node(p).name ~= "air" then return end
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if minetest.get_meta(pos):get_string("spawnblock") == "" then return end
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if mg_name ~= "v6" and mg_name ~= "singlenode" and def.biomes then
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if table.indexof(def.biomes,minetest.get_biome_name(minetest.get_biome_data(p).biome)) == -1 then
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return
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end
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end
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local mobdef = minetest.registered_entities[def.name]
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if mobdef.can_spawn and not mobdef.can_spawn(p) then return end
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minetest.add_entity(p,def.name)
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end,
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})
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end
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--lbm for secondary structures (structblock included in base structure)
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minetest.register_lbm({
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name = "mcl_structures:struct_lbm",
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run_at_every_load = true,
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nodenames = {"group:structblock_lbm"},
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action = function(pos, node)
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minetest.remove_node(pos)
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local name = node.name:gsub("mcl_structures:structblock_","")
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local def = mcl_structures.registered_structures[name]
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if not def then return end
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mcl_structures.place_structure(pos)
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end
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})
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