worldedit = worldedit or {} dofile(minetest.get_modpath("worldedit") .. "/table_save.lua") --wip: remove dependency --modifies positions `pos1` and `pos2` so that each component of `pos1` is less than or equal to its corresponding conent of `pos2`, returning two new positions worldedit.sort_pos = function(pos1, pos2) pos1 = {x=pos1.x, y=pos1.y, z=pos1.z} pos2 = {x=pos2.x, y=pos2.y, z=pos2.z} if pos1.x > pos2.x then pos2.x, pos1.x = pos1.x, pos2.x end if pos1.y > pos2.y then pos2.y, pos1.y = pos1.y, pos2.y end if pos1.z > pos2.z then pos2.z, pos1.z = pos1.z, pos2.z end return pos1, pos2 end --converts the region defined by positions `pos1` and `pos2` into a single string, returning the serialized data and the number of nodes serialized worldedit.serialize = function(pos1, pos2) local pos1, pos2 = worldedit.sort_pos(pos1, pos2) local pos = {x=pos1.x, y=0, z=0} local count = 0 local result = {} local env = minetest.env while pos.x <= pos2.x do pos.y = pos1.y while pos.y <= pos2.y do pos.z = pos1.z while pos.z <= pos2.z do local node = env:get_node(pos) if node.name ~= "air" and node.name ~= "ignore" then count = count + 1 result[count] = pos.x - pos1.x .. " " .. pos.y - pos1.y .. " " .. pos.z - pos1.z .. " " .. node.name .. " " .. node.param1 .. " " .. node.param2 end pos.z = pos.z + 1 end pos.y = pos.y + 1 end pos.x = pos.x + 1 end result = table.concat(result, "\n") --join all node entries into single string return result, count end --determines the volume the nodes represented by string `value` would occupy if deserialized at `originpos`, returning the two corner positions and the number of nodes worldedit.allocate = function(originpos, value) local huge = math.huge local pos1 = {x=huge, y=huge, z=huge} local pos2 = {x=-huge, y=-huge, z=-huge} local originx, originy, originz = originpos.x, originpos.y, originpos.z local count = 0 for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z) if x < pos1.x then pos1.x = x end if y < pos1.y then pos1.y = y end if z < pos1.z then pos1.z = z end if x > pos2.x then pos2.x = x end if y > pos2.y then pos2.y = y end if z > pos2.z then pos2.z = z end count = count + 1 end return pos1, pos2, count end --loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized worldedit.deserialize = function(originpos, value) local pos = {x=0, y=0, z=0} local node = {name="", param1=0, param2=0} local originx, originy, originz = originpos.x, originpos.y, originpos.z local count = 0 local env = minetest.env for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries pos.x = originx + tonumber(x) pos.y = originy + tonumber(y) pos.z = originz + tonumber(z) node.name = name node.param1 = param1 node.param2 = param2 env:add_node(pos, node) count = count + 1 end return count end --loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized --based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible) worldedit.deserialize_old = function(originpos, value) --obtain the node table local count = 0 local get_tables = loadstring(value) if get_tables == nil then --error loading value return count end local tables = get_tables() --transform the node table into an array of nodes for i = 1, #tables do for j, v in pairs(tables[i]) do if type(v) == "table" then tables[i][j] = tables[v[1]] end end end --load the node array local env = minetest.env for i, v in ipairs(tables[1]) do local pos = v[1] pos.x, pos.y, pos.z = originpos.x + pos.x, originpos.y + pos.y, originpos.z + pos.z env:add_node(pos, v[2]) count = count + 1 end return count end --saves the nodes and meta defined by positions `pos1` and `pos2` into a file, returning the number of nodes saved worldedit.metasave = function(pos1, pos2, file) --wip: simply work with strings instead of doing IO local path = minetest.get_worldpath() .. "/schems" local filename = path .. "/" .. file .. ".wem" os.execute("mkdir \"" .. path .. "\"") --create directory if it does not already exist local rows = {} local pos1, pos2 = worldedit.sort_pos(pos1, pos2) local pos = {x=pos1.x, y=0, z=0} local count = 0 local result = {} local env = minetest.env while pos.x <= pos2.x do pos.y = pos1.y while pos.y <= pos2.y do pos.z = pos1.z while pos.z <= pos2.z do local node = env:get_node(pos) if node.name ~= "air" and node.name ~= "ignore" then count = count + 1 local row = { x = pos.x-pos1.x, y = pos.y-pos1.y, z = pos.z-pos1.z, name = node.name, param1 = node.param1, param2 = node.param2, meta = env:get_meta(pos):to_table(), } table.insert(rows, row) end pos.z = pos.z + 1 end pos.y = pos.y + 1 end pos.x = pos.x + 1 end local err = table.save(rows,filename) if err then return _,err end return count end --loads the nodes and meta from `file` to position `pos1`, returning the number of nodes loaded worldedit.metaload = function(pos1, file) --wip: simply work with strings instead of doing IO local filename = minetest.get_worldpath() .. "/schems/" .. file .. ".wem" local rows, err = table.load(filename) if err then return _,err end local pos = {x=0, y=0, z=0} local node = {name="", param1=0, param2=0} local count = 0 local env = minetest.env for i,row in pairs(rows) do pos.x = pos1.x + tonumber(row.x) pos.y = pos1.y + tonumber(row.y) pos.z = pos1.z + tonumber(row.z) node.name = row.name node.param1 = row.param1 node.param2 = row.param2 env:add_node(pos, node) env:get_meta(pos):from_table(row.meta) count = count + 1 end return count end