minetest.register_privilege("metatest", definition)
 
minetest.register_node("metatest:metatestblock",
        {       description = "Block to test some meta",
                drawtype = "normal",
                tiles = {"default_mese_block.png"},
               
                after_place_node = function(pos, placer, itemstack, pointed_thing)
               
                        local meta = minetest.get_meta(pos)
                        local player = placer:get_player_name()
                       
                        meta:set_string("owner", player)
                        meta:set_string("infotext", ("Test meta block" ).." (owned by "..meta:get_string("owner")..")")
                                               
                        local metatest_formspec =
                                "size[8,8]" ..
                                "box[-0.2,-0.2;8.2,8.5;#75816b]" ..
                                "background[2.9,3.2;2,2;default_mese_block.png;auto_clip]" ..
                                "field[1,1;2,1;x;Enter x coord (xx):;]" ..
                                "field[3,1;2,1;y;Enter y coord (yy):;]" ..
                                "field[5,1;2,1;z;Enter z coord (zz):;]" ..
                                "button[0.7,2.5;2,2;remove;Remove Node]" ..
                                "button[0.7,3.5;2,2;activate;Activate]" ..
                                "button_exit[0.7,4.5;2,2;exit;Cancel]" ..
                                "button[5.7,2.5;2,2;unlock;Unlock Coords]"
                               
                        meta:set_string("formspec", metatest_formspec)
                                                               
                end,
 
                on_receive_fields = function(pos, formname, fields, sender)
               
                        local meta = minetest.get_meta(pos)
                        local name = sender:get_player_name()
                       
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                        if fields and fields.activate then
                       
                                if fields and fields.x and fields.y and fields.z then
                               
                                        if (tonumber(fields.x)) then pos.x = tonumber(fields.x)
                                        else minetest.chat_send_player(name, "X Coordinate Invalid") end
                                        if (tonumber(fields.y)) then pos.y = tonumber(fields.y)
                                        else minetest.chat_send_player(name, "Y Coordinate Invalid") end
                                        if (tonumber(fields.z)) then pos.z = tonumber(fields.z)
                                        else minetest.chat_send_player(name, "Z Coordinate Invalid") end
                                       
                                end
                                       
                        sender:set_pos({x=pos.x, y=pos.y, z=pos.z})
                                               
                        end
                       
---------------------------------------------------------------------------------------------------------------------------------------------                                  
 
                        if fields and fields.remove then
                       
                        local owner = meta:get_string( "owner" )
                       
                                if owner ~= name then
                                minetest.chat_send_player(name, ("This Metatest Block belongs to ") ..meta:get_string("owner") ..(". You can't remove it."))
                                return
                                end
                       
                        minetest.set_node(pos, {name = "air"})
                        sender:get_inventory():add_item("main", "metatest:metatestblock")
                       
                        end
                       
---------------------------------------------------------------------------------------------------------------------------------------------          
               
                end            
        }
)