115 lines
4.5 KiB
Lua
115 lines
4.5 KiB
Lua
--[[
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Import maps from Minecraft Classic
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Copyright (C) 2013 Sokomine
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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--]]
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minetest.register_privilege("mcimport", "Can import Minecraft Classic savefiles")
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mcimport = {}
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-- node definitions (inactive blocks that represent those of MC classic)
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dofile(minetest.get_modpath("mcimport").."/nodes.lua");
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-- the actual import/conversion happens here
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dofile(minetest.get_modpath("mcimport").."/mc2mt.lua");
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minetest.register_chatcommand("mcimport", {
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params = "<file> <dimensions> <position>",
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description = "Import Minecraft classic map from <file> \"(world folder)/schems/<file>.dat\" "..
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"(you have to uncompress the level manually before) "..
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"with the dimensions <dimnnsions> to the given position/coordinates <position>. Example: "..
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"/mcimport my_map 256x256x512 100:15:35 will read the file (world folder)/schems/my_map.dat as a Minecraft "..
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"classic map of the size 256x256x512 and import it to your current Minetest world at coordinates x=100, y=15 (height!) "..
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"and z=35. Make sure the area you import to is loaded!",
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privs = {mcimport=true},
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func = function(name, param)
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local params_expected = "<file> <dimension_x>x<dimension_y>x<dimension_z> <target_pos_x>:<target_pos_y>:<target_pos_z>";
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if( param == "" or param==nil) then
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minetest.chat_send_player(name, "Missing parameters: "..params_expected );
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return;
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end
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local pos = {x=0; y=0; z=0};
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local dim = {x=0; y=0; z=0};
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local fname;
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for fn, dim_x, dim_y, dim_z, pos_x, pos_y, pos_z in param:gmatch("([^%s]+)%s+(%d+)x(%d+)x(%d+)%s+([+-]?%d+)\:([+-]?%d+)\:([+-]?%d+)") do
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if( fn ~= nil and dim_x ~= nil and dim_y ~= nil and dim_z ~= nil and pos_x ~= nil and pos_y ~= nil and pos_z ~= nil ) then
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-- target position
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pos.x = tonumber( pos_x );
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pos.y = tonumber( pos_y );
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pos.z = tonumber( pos_z );
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-- map dimensions
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dim.x = tonumber( dim_x );
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dim.y = tonumber( dim_y );
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dim.z = tonumber( dim_z );
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-- ...and the file
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fname = fn;
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end
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end
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if( dim.x == 0 ) then
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minetest.chat_send_player(name, "Missing/wrong parameters. Got: "..param.." Expected: "..params_expected );
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return;
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end
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if( dim.x<1 or dim.y<1 or dim.z<1) then
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minetest.chat_send_player(name, "Impossible map dimensions." );
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return;
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end
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if( pos.x> 30000 or pos.y> 30000 or pos.z> 30000
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or pos.x<-30000 or pos.y<-30000 or pos.z<-30000) then
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minetest.chat_send_player(name, "The target position is too far out. No coordinate shall exceed +/-30000." );
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return;
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end
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if( ((dim.x%16) ~= 0) or ((dim.y%16) ~= 0) or ((dim.z%16) ~= 0)) then
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minetest.chat_send_player(name, "Warning: Your map dimensions seem unlikely. Usually they are multiples of 16 (e.g. 64, 128, 256, ...)." );
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end
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local filename_mc;
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filename_mc = minetest.get_worldpath().."/schems/"..fname.. ".dat";
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file, err = io.open(filename_mc, "rb");
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if err ~= nil then
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minetest.chat_send_player(name, "Could not open file \""..filename_mc.."\".");
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return;
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end
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local value = file:read("*a");
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file:close();
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minetest.chat_send_player( name, "Map file \""..tostring( fname )..
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"\" with dimensions "..tostring( dim.x ).." x "..tostring( dim.y ).." x "..tostring( dim.z )..
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" will be imported to position "..tostring( pos.x ).." : "..tostring( pos.y ).." : "..tostring( pos.z )..".");
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local count;
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count = 0;
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count = mcimport.deserialize_mc(pos, value, dim, name );
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minetest.chat_send_player(name, "MCimport finised. Status: "..count .. " nodes imported.");
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end,
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})
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