worldedit_commands/safe.lua

   1 local safe_region_callback = {}\r
   2 \r
   3 --`count` is the number of nodes that would possibly be modified\r
   4 --`callback` is a callback to run when the user confirms\r
   5 local function safe_region(name, count, callback)\r
   6         if count < 20000 then\r
   7                 return callback()\r
   8         end\r
   9 \r
  10         --save callback to call later\r
  11         safe_region_callback[name] = callback\r
  12         worldedit.player_notify(name, "WARNING: this operation could affect up to " .. count .. " nodes; type //y to continue or //n to cancel")\r
  13 end\r
  14 \r
  15 local function reset_pending(name)\r
  16         safe_region_callback[name] = nil\r
  17 end\r
  18 \r
  19 minetest.register_chatcommand("/y", {\r
  20         params = "",\r
  21         description = "Confirm a pending operation",\r
  22         func = function(name)\r
  23                 local callback = safe_region_callback[name]\r
  24                 if not callback then\r
  25                         worldedit.player_notify(name, "no operation pending")\r
  26                         return\r
  27                 end\r
  28 \r
  29                 reset_pending(name)\r
  30                 callback(name)\r
  31         end,\r
  32 })\r
  33 \r
  34 minetest.register_chatcommand("/n", {\r
  35         params = "",\r
  36         description = "Abort a pending operation",\r
  37         func = function(name)\r
  38                 if not safe_region_callback[name] then\r
  39                         worldedit.player_notify(name, "no operation pending")\r
  40                         return\r
  41                 end\r
  42 \r
  43                 reset_pending(name)\r
  44         end,\r
  45 })\r
  46 \r
  47 \r
  48 return safe_region, reset_pending\r