412 lines
14 KiB
Lua
412 lines
14 KiB
Lua
-- TUTORIAL MAP GENERATION
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-- == DEBUG SETTINGS ==
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-- If true, the generated tutorial map is in "map editing" mode, only generating
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-- the raw castle, no grass layer or other random decorations will be generated.
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-- Also, 2 commands to manage the schematic will be available:
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-- /treset and /tsave commands will be available.
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-- (/tsave only if tutorial is trusted mod)
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local map_editing = minetest.settings:get_bool("tutorial_debug_map_editing")
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-- == END OF DEBUG SETTINGS ==
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local c_dirt = minetest.get_content_id("default:dirt")
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local c_dirt_with_grass = minetest.get_content_id("default:dirt_with_grass")
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local c_grass = minetest.get_content_id("default:grass_5")
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-- Directory where the map data will be stored
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tutorial.map_directory = minetest.get_modpath("tutorial_mapgen").."/mapdata/"
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local insecure_environment = minetest.request_insecure_environment()
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minetest.log("error", tostring(insecure_environment ~= nil))
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minetest.log("error", tostring(map_editing ~= nil))
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-- entity management functions
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local function init_item_spawners(spawners)
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local count = 0
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for n=1, #spawners do
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local timer = minetest.get_node_timer(spawners[n])
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timer:start(3)
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count = count + 1
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end
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minetest.log("action", "[tutorial_mapgen] " .. count .. " item spawners initialized")
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end
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---
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-- Sectors of the map to save/load
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-- Each element of the array will contain the coordinate where the sector starts
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-- along with a "l" property indicating its length in each direction.
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tutorial.map_sector = {}
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-- Array with the minimum and the maximum positions of the cube that contains the
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-- entire Tutorial World, it's best if the start matches the start of a mapchunk
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tutorial.limits = {
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{ x = -32, y = -32, z = -32 },
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{ x = 224, y = 48, z = 144 },
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}
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-- size of the sectors to form divisions of the map.
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-- This needs to be a multiple of 16, since it will also determine the
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-- chunksize
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tutorial.sector_size = 80
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-- perform the divisions using the given sector size within the limits provided
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for x = tutorial.limits[1].x, tutorial.limits[2].x, tutorial.sector_size do
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for y = tutorial.limits[1].y, tutorial.limits[2].y, tutorial.sector_size do
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for z = tutorial.limits[1].z, tutorial.limits[2].z, tutorial.sector_size do
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table.insert(tutorial.map_sector, {x=x,y=y,z=z,l=(tutorial.sector_size - 1)})
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end
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end
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end
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--]]
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-- Load the sector schematics from disc
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tutorial.sector_data = {}
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for k,sector in pairs(tutorial.map_sector) do
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local filename = tutorial.map_directory .. "sector_"..k
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local f, err = io.open(filename..".meta", "rb")
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if f then
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local data = minetest.deserialize(minetest.decompress(f:read("*a")))
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tutorial.sector_data[filename] = data
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f:close()
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end
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end
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-- Saves schematic in the Minetest Schematic (and metadata) to disk.
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-- Takes the same arguments as minetest.create_schematic
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-- @param minp Lowest position (in all 3 coordinates) of the area to save
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-- @param maxp Highest position (in all 3 coordinates) of the area to save
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-- @param probability_list = {{pos={x=,y=,z=},prob=}, ...} list of probabilities for the nodes to be loaded (if nil, always load)
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-- @param filename (without externsion) with the path to save the shcematic and metadata to
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-- @param slice_prob_list = {{ypos=,prob=}, ...} list of probabilities for the slices to be loaded (if nil, always load)
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-- @return The number of nodes with metadata.
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local function save_region(minp, maxp, probability_list, filename, slice_prob_list)
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local success = minetest.create_schematic(minp, maxp, probability_list, filename .. ".mts", slice_prob_list)
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if not success then
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minetest.log("error", "[tutorial_mapgen] problem creating schematic on ".. minetest.pos_to_string(minp) .. ": " .. filename)
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return false
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end
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local manip = minetest.get_voxel_manip()
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manip:read_from_map(minp, maxp)
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local pos = {x=minp.x, y=0, z=0}
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local count = 0
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local nodes = {}
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local get_node, get_meta = minetest.get_node, minetest.get_meta
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while pos.x <= maxp.x do
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pos.y = minp.y
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while pos.y <= maxp.y do
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pos.z = minp.z
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while pos.z <= maxp.z do
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local node = get_node(pos)
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if node.name ~= "air" and node.name ~= "ignore" then
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local meta = get_meta(pos):to_table()
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local meta_empty = true
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-- Convert metadata item stacks to item strings
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for name, inventory in pairs(meta.inventory) do
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for index, stack in ipairs(inventory) do
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meta_empty = false
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inventory[index] = stack.to_string and stack:to_string() or stack
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end
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end
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if meta.fields and next(meta.fields) ~= nil then
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meta_empty = false
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end
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if not meta_empty then
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count = count + 1
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nodes[count] = {
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x = pos.x - minp.x,
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y = pos.y - minp.y,
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z = pos.z - minp.z,
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meta = meta,
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}
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end
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end
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pos.z = pos.z + 1
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end
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pos.y = pos.y + 1
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end
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pos.x = pos.x + 1
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end
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if count > 0 then
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local result = {
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size = {
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x = maxp.x - minp.x,
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y = maxp.y - minp.y,
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z = maxp.z - minp.z,
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},
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nodes = nodes,
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}
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-- Serialize entries
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result = minetest.serialize(result)
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local file, err = insecure_environment.io.open(filename..".meta", "wb")
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if err ~= nil then
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error("Couldn't write to \"" .. filename .. "\"")
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end
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file:write(minetest.compress(result))
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file:flush()
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file:close()
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minetest.log("action", "[tutorial_mapgen] schematic + metadata saved: " .. filename)
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else
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minetest.log("action", "[tutorial_mapgen] schematic (no metadata) saved: " .. filename)
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end
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return success, count
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end
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-- Places the schematic specified in the given position.
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-- @param minp Lowest position (in all 3 coordinates) of the area to load
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-- @param filename without extension, but with path of the file to load
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-- @param vmanip voxelmanip object to use to place the schematic in
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-- @param rotation can be 0, 90, 180, 270, or "random".
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-- @param replacements = {["old_name"] = "convert_to", ...}
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-- @param force_placement is a boolean indicating whether nodes other than air and ignore are replaced by the schematic
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-- @return boolean indicating success or failure
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local function load_region(minp, filename, vmanip, rotation, replacements, force_placement)
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if rotation == "random" then
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rotation = {nil, 90, 180, 270}
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rotation = rotation[math.random(1,4)]
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end
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local success
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if vmanip and minetest.place_schematic_on_vmanip then
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success = minetest.place_schematic_on_vmanip(vmanip, minp, filename .. ".mts", tostring(rotation), replacements, force_placement)
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else
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success = minetest.place_schematic(minp, filename .. ".mts", tostring(rotation), replacements, force_placement)
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end
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if success == false then
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minetest.log("action", "[tutorial_mapgen] schematic partionally loaded on ".. minetest.pos_to_string(minp))
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elseif not success then
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minetest.log("error", "[tutorial_mapgen] problem placing schematic on ".. minetest.pos_to_string(minp) .. ": " .. filename)
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return nil
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end
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local data = tutorial.sector_data[filename]
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if not data then return true, {} end
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local get_meta = minetest.get_meta
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local spawners = {}
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if not rotation or rotation == 0 then
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for i, entry in ipairs(data.nodes) do
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entry.x, entry.y, entry.z = minp.x + entry.x, minp.y + entry.y, minp.z + entry.z
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if entry.meta then
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get_meta(entry):from_table(entry.meta)
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if entry.meta.fields.spawned then
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table.insert(spawners, {x=entry.x, y=entry.y, z=entry.z})
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end
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end
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end
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else
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local maxp_x, maxp_z = minp.x + data.size.x, minp.z + data.size.z
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if rotation == 90 then
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for i, entry in ipairs(data.nodes) do
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entry.x, entry.y, entry.z = minp.x + entry.z, minp.y + entry.y, maxp_z - entry.x
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if entry.meta then get_meta(entry):from_table(entry.meta) end
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end
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elseif rotation == 180 then
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for i, entry in ipairs(data.nodes) do
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entry.x, entry.y, entry.z = maxp_x - entry.x, minp.y + entry.y, maxp_z - entry.z
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if entry.meta then get_meta(entry):from_table(entry.meta) end
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end
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elseif rotation == 270 then
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for i, entry in ipairs(data.nodes) do
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entry.x, entry.y, entry.z = maxp_x - entry.z, minp.y + entry.y, minp.z + entry.x
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if entry.meta then get_meta(entry):from_table(entry.meta) end
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end
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else
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minetest.log("error", "[tutorial_mapgen] unsupported rotation angle: " .. (rotation or "nil"))
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return false
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end
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end
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minetest.log("action", "[tutorial_mapgen] schematic + metadata loaded on ".. minetest.pos_to_string(minp))
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return true, spawners
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end
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local function save_schematic()
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local success = true
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for k,sector in pairs(tutorial.map_sector) do
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local filename = tutorial.map_directory .. "sector_"..k
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local minp = sector
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local maxp = {
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x = sector.x + sector.l,
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y = sector.y + sector.l,
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z = sector.z + sector.l
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}
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if not save_region(minp, maxp, nil, filename) then
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minetest.log("error", "[tutorial_mapgen] error loading Tutorial World sector " .. minetest.pos_to_string(sector))
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success = false
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end
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end
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return success
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end
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local function load_schematic()
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local success = true
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for k,sector in pairs(tutorial.map_sector) do
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local filename = tutorial.map_directory .. "sector_"..k
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minetest.log("action", "loading sector " .. minetest.pos_to_string(sector))
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sector.maxp = vector.add(sector, {x=sector.l, y=sector.l, z=sector.l})
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-- Load the area above the schematic to guarantee we have blue sky above
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-- and prevent lighting glitches
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--minetest.emerge_area(vector.add(sector, {x=0, y=sector.l, z=0}), vector.add(sector.maxp, {x=0,y=32,z=0}))
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local vmanip = VoxelManip(sector, sector.maxp)
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if not load_region(sector, filename, vmanip, nil, nil, true) then
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minetest.log("error", "[tutorial_mapgen] error loading Tutorial World sector " .. minetest.pos_to_string(sector))
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success = false
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end
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vmanip:calc_lighting()
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vmanip:write_to_map()
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vmanip:update_map()
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end
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return success
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end
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------ Commands
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if map_editing then
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minetest.log("action", "Map editing mode is enabled.")
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minetest.register_on_joinplayer(function(player)
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minetest.chat_send_player(player:get_player_name(), "Map editing mode is enabled.")
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end)
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minetest.register_privilege("tutorialmap", "Can use commands to manage the tutorial map")
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minetest.register_chatcommand("treset", {
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params = "",
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description = "Resets the tutorial map",
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privs = {tutorialmap=true},
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func = function(name, param)
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if load_schematic() then
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minetest.chat_send_player(name, "Tutorial World schematic loaded")
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else
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minetest.chat_send_player(name, "An error occurred while loading Tutorial World schematic")
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end
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-- TODO: re-load entities?
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end,
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})
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-- Add commands for saving map and entities, but only if tutorial mod is trusted
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if insecure_environment then
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minetest.register_chatcommand("tsave", {
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params = "",
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description = "Saves the tutorial map",
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privs = {tutorialmap=true},
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func = function(name, param)
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if save_schematic() then
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minetest.chat_send_player(name, "Tutorial World schematic saved")
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else
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minetest.chat_send_player(name, "An error occurred while saving Tutorial World schematic")
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end
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end,
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})
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else
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minetest.log("warning", "Could not create insecure environment! /tsave command is disabled.")
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minetest.register_on_joinplayer(function(player)
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minetest.chat_send_player(player:get_player_name(), "Could not create insecure environment! /tsave command is not available.")
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end)
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end
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end
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------ Map Generation
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local vbuffer = nil
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tutorial.state = tutorial.state or {}
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tutorial.state.loaded = tutorial.state.loaded or {}
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minetest.register_on_generated(function(minp, maxp, seed)
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local state_changed = false
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local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
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for k,sector in pairs(tutorial.map_sector) do
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if not tutorial.state.loaded[k] then
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if sector.maxp == nil then
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sector.maxp = {
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x = sector.x + sector.l,
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y = sector.y + sector.l,
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z = sector.z + sector.l,
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}
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end
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-- Only load it if not out of the generating range
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if not ((maxp.x < sector.x) or (minp.x > sector.maxp.x)
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or (maxp.y < sector.y) or (minp.y > sector.maxp.y)
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or (maxp.z < sector.z) or (minp.z > sector.maxp.z))
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then
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local filename = tutorial.map_directory .. "sector_" .. k
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local loaded, spawners = load_region(sector, filename, vm)
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if loaded then
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-- Initialize item spawners in the area as well, and mark it as loaded
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init_item_spawners(spawners)
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tutorial.state.loaded[k] = true
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end
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state_changed = true
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end
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end
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end
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-- Generate a flat grass land and a dirt-only underground for the rest of the map
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if map_editing ~= true then
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local grasslev = 0
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if minp.y <= grasslev then
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local vdata = vm:get_data(vbuffer)
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local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
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for x = minp.x, maxp.x do
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for z = minp.z, maxp.z do
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for y = minp.y, maxp.y do
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local p_pos = area:index(x, y, z)
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local p_pos_above
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if minp.y <= grasslev+1 and maxp.y >= maxp.y then
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p_pos_above = area:index(x, y + 1, z)
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end
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local _, areas_count = areas:getAreasAtPos({x=x,y=y,z=z})
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if areas_count == 0 and vdata[p_pos] == minetest.CONTENT_AIR then
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if y == grasslev then
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vdata[p_pos] = c_dirt_with_grass
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if p_pos_above and vdata[p_pos_above] == minetest.CONTENT_AIR then
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if math.random(0,50) == 0 then
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vdata[p_pos_above] = c_grass
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end
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end
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elseif y < grasslev then
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vdata[p_pos] = c_dirt
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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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vm:set_data(vdata)
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state_changed = true
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end
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end
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if(state_changed) then
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vm:calc_lighting(nil, nil, false)
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vm:write_to_map()
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tutorial.save_state()
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end
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end)
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minetest.set_mapgen_setting("mg_name", "singlenode")
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minetest.set_mapgen_setting("water_level", "-31000")
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minetest.set_mapgen_setting("chunksize", tostring(tutorial.sector_size/16))
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-- coordinates for the first time the player spawns
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tutorial.first_spawn = { pos={x=42,y=0.5,z=28}, yaw=(math.pi * 0.5) }
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