mcl_maps = {} local S = minetest.get_translator("mcl_maps") local storage = minetest.get_mod_storage() local modpath = minetest.get_modpath("mcl_maps") local worldpath = minetest.get_worldpath() local map_textures_path = worldpath .. "/mcl_maps/" local last_finished_id = storage:get_int("next_id") - 1 minetest.mkdir(map_textures_path) local function load_json_file(name) local file = assert(io.open(modpath .. "/" .. name .. ".json", "r")) local data = minetest.parse_json(file:read()) file:close() return data end local texture_colors = load_json_file("colors") local palettes = load_json_file("palettes") local color_cache = {} local creating_maps = {} local loading_maps = {} local loaded_maps = {} local c_air = minetest.get_content_id("air") function mcl_maps.create_map(pos) local itemstack = ItemStack("mcl_maps:filled_map") local meta = itemstack:get_meta() local id = storage:get_int("next_id") storage:set_int("next_id", id + 1) local texture_file = "mcl_maps_map_texture_" .. id .. ".tga" local texture_path = map_textures_path .. texture_file local texture = "[combine:140x140:0,0=mcl_maps_map_background.png:6,6=" .. texture_file meta:set_int("mcl_maps:id", id) meta:set_string("mcl_maps:texture", texture) meta:set_string("mcl_maps:texture_path", texture_path) tt.reload_itemstack_description(itemstack) creating_maps[texture] = true local minp = vector.multiply(vector.floor(vector.divide(pos, 128)), 128) local maxp = vector.add(minp, vector.new(127, 127, 127)) minetest.emerge_area(minp, maxp, function(blockpos, action, calls_remaining) if calls_remaining > 0 then return end local vm = minetest.get_voxel_manip() local emin, emax = vm:read_from_map(minp, maxp) local data = vm:get_data() local param2data = vm:get_param2_data() local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax}) local pixels = {} local last_heightmap for x = 1, 128 do local map_x = minp.x - 1 + x local heightmap = {} for z = 1, 128 do local map_z = minp.z - 1 + z local color for map_y = maxp.y, minp.y, -1 do local index = area:index(map_x, map_y, map_z) local c_id = data[index] if c_id ~= c_air then color = color_cache[c_id] if color == nil then local nodename = minetest.get_name_from_content_id(c_id) local def = minetest.registered_nodes[nodename] if def then local texture if def.palette then texture = def.palette elseif def.tiles then texture = def.tiles[1] if type(texture) == "table" then texture = texture.name end end if texture then texture = texture:match("([^=^%^]-([^.]+))$"):split("^")[1] end if def.palette then local palette = palettes[texture] color = palette and {palette = palette} else color = texture_colors[texture] end end end if color and color.palette then color = color.palette[param2data[index] + 1] else color_cache[c_id] = color or false end if color and last_heightmap then local last_height = last_heightmap[z] if last_height < map_y then color = { math.min(255, color[1] + 16), math.min(255, color[2] + 16), math.min(255, color[3] + 16), } elseif last_height > map_y then color = { math.max(0, color[1] - 16), math.max(0, color[2] - 16), math.max(0, color[3] - 16), } end end height = map_y break end end heightmap[z] = height pixels[z] = pixels[z] or {} pixels[z][x] = color or {0, 0, 0} end last_heightmap = heightmap end tga_encoder.image(pixels):save(texture_path) creating_maps[texture] = false end) return itemstack end -- Turn empty map into filled map by rightclick local make_filled_map = function(itemstack, placer, pointed_thing) if minetest.settings:get_bool("enable_real_maps", true) then local new_map = mcl_maps.create_map(placer:get_pos()) itemstack:take_item() if itemstack:is_empty() then return new_map else local inv = placer:get_inventory() if inv:room_for_item("main", new_map) then inv:add_item("main", new_map) else minetest.add_item(placer:get_pos(), new_map) end return itemstack end end end minetest.register_craftitem("mcl_maps:empty_map", { description = S("Empty Map"), _doc_items_longdesc = S("Empty maps are not useful as maps, but they can be stacked and turned to maps which can be used."), _doc_items_usagehelp = S("Rightclick to create a filled map (which can't be stacked anymore)."), inventory_image = "mcl_maps_map_empty.png", groups = { not_in_creative_inventory = 1 }, on_place = make_filled_map, on_secondary_use = make_filled_map, stack_max = 64, }) minetest.register_craftitem("mcl_maps:filled_map", { description = S("Map"), _tt_help = S("Shows a map image."), _doc_items_longdesc = S("When created, the map saves the nearby area as an image that can be viewed any time by holding the map."), _doc_items_usagehelp = S("Hold the map in your hand. This will display a map on your screen."), groups = { tool = 1 }, inventory_image = "mcl_maps_map_filled.png^(mcl_maps_map_filled_markings.png^[colorize:#000000)", stack_max = 1, }) tt.register_priority_snippet(function(itemstring, _, itemstack) if itemstack and itemstring == "mcl_maps:filled_map" then local id = itemstack:get_meta():get_string("mcl_maps:id") if id ~= "" then return "#" .. id, mcl_colors.GRAY end end end) minetest.register_craft({ output = "mcl_maps:empty_map", recipe = { { "mcl_core:paper", "mcl_core:paper", "mcl_core:paper" }, { "mcl_core:paper", "group:compass", "mcl_core:paper" }, { "mcl_core:paper", "mcl_core:paper", "mcl_core:paper" }, } }) local maps = {} local huds = {} minetest.register_on_joinplayer(function(player) huds[player] = player:hud_add({ hud_elem_type = "image", text = "blank.png", position = {x = 1, y = 1}, alignment = {x = -1, y = -1}, offset = {x = -125, y = -50}, scale = {x = 2, y = 2}, }) end) minetest.register_on_leaveplayer(function(player) maps[player] = nil huds[player] = nil end) local function is_holding_map(player) local wield = player:get_wielded_item() if wield:get_name() ~= "mcl_maps:filled_map" then return end local meta = wield:get_meta() local texture = meta:get_string("mcl_maps:texture") if texture == "" then return end if loaded_maps[texture] then return texture end local path = meta:get_string("mcl_maps:texture_path") if not creating_maps[texture] and not loading_maps[texture] then loading_maps[texture] = true local player_name = player:get_player_name() minetest.dynamic_add_media(path, function(finished_name) if player_name == finished_name then loading_maps[texture] = false loaded_maps[texture] = true end end) end end minetest.register_globalstep(function(dtime) for _, player in pairs(minetest.get_connected_players()) do local texture = is_holding_map(player) if texture then if texture ~= maps[player] then player:hud_change(huds[player], "text", texture) maps[player] = texture end elseif maps[player] then player:hud_change(huds[player], "text", "blank.png") maps[player] = nil end end end)