worldedit_brush/init.lua

   1 if minetest.raycast == nil then
   2         error(
   3                 "================================\n"..
   4                 "This mod requires a suitable version of 0.4.16-dev/0.5.0-dev\n"..
   5                 "that includes support for minetest.raycast() [since 7th July 2017]\n"..
   6                 "================================\n"
   7         )
   8 end
   9
  10 local BRUSH_MAX_DIST = 150
  11 local BRUSH_ALLOWED_COMMANDS = {
  12         -- basically everything that only needs pos1
  13         "cube",
  14         "cylinder",
  15         "dome",
  16         "hollowcube",
  17         "hollowcylinder",
  18         "hollowdome",
  19         "hollowpyramid",
  20         "hollowsphere",
  21         "load",
  22         "pyramid",
  23         "sphere",
  24         "spiral",
  25
  26         "cyl",
  27         "do",
  28         "hcube",
  29         "hcyl",
  30         "hdo",
  31         "hpyr",
  32         "hspr",
  33         "l",
  34         "pyr",
  35         "spr",
  36         "spl",
  37 }
  38 local brush_on_use = function(itemstack, placer)
  39         local meta = itemstack:get_meta()
  40         local name = placer:get_player_name()
  41
  42         local cmd = meta:get_string("command")
  43         if cmd == "" then
  44                 worldedit.player_notify(name,
  45                         "This brush is not bound, use //brush to bind a command to it.")
  46                 return false
  47         end
  48         local cmddef = minetest.registered_chatcommands["/" .. cmd]
  49         if cmddef == nil then return false end -- shouldn't happen as //brush checks this
  50         local has_privs, missing_privs = minetest.check_player_privs(name, cmddef.privs)
  51         if not has_privs then
  52                 worldedit.player_notify(name,
  53                         "Missing privileges: " .. table.concat(missing_privs, ", "))
  54                 return false
  55         end
  56
  57         local raybegin = vector.add(placer:get_pos(), {x=0, y=2, z=0}) -- player head
  58         local rayend = vector.add(raybegin, vector.multiply(placer:get_look_dir(), BRUSH_MAX_DIST))
  59         local ray = minetest.raycast(raybegin, rayend, false, true)
  60         local pointed_thing = ray:next()
  61         if pointed_thing == nil then
  62                 worldedit.player_notify(name, "Too far away.")
  63                 return false
  64         end
  65
  66         assert(pointed_thing.type == "node")
  67         worldedit.pos1[name] = pointed_thing.under
  68         worldedit.pos2[name] = nil
  69         worldedit.mark_region(name)
  70         -- is this a horrible hack? oh yes.
  71         worldedit._override_safe_regions = true
  72         local player_notify_old = worldedit.player_notify
  73         worldedit.player_notify = function(name, msg)
  74                 if string.match(msg, "^%d") then return end -- discard "1234 nodes added."
  75                 return player_notify_old(name, msg)
  76         end
  77
  78         minetest.log("action", string.format("%s uses WorldEdit brush (//%s) at %s",
  79                 name, cmd, minetest.pos_to_string(pointed_thing.under)))
  80         cmddef.func(name, meta:get_string("params"))
  81
  82         worldedit._override_safe_regions = false
  83         worldedit.player_notify = player_notify_old
  84         return true
  85 end
  86
  87 minetest.register_tool(":worldedit:brush", {
  88         description = "WorldEdit Brush",
  89         inventory_image = "worldedit_brush.png",
  90         stack_max = 1, -- no need to stack these (metadata prevents this anyway)
  91         range = 0,
  92         on_use = function(itemstack, placer, pointed_thing)
  93                 brush_on_use(itemstack, placer)
  94                 return itemstack -- nothing consumed, nothing changed
  95         end,
  96 })
  97
  98 minetest.register_chatcommand("/brush", {
  99         privs = {worldedit=true},
 100         params = "none/<cmd> [parameters]",
 101         description = "Assign command to WorldEdit brush item",
 102         func = function(name, param)
 103                 local found, _, cmd, params = param:find("^([^%s]+)%s+(.+)$")
 104                 if not found then
 105                         params = ""
 106                         found, _, cmd = param:find("^(.+)$")
 107                 end
 108                 if not found then
 109                         worldedit.player_notify(name, "Invalid usage.")
 110                         return
 111                 end
 112
 113                 local itemstack = minetest.get_player_by_name(name):get_wielded_item()
 114                 if itemstack == nil or itemstack:get_name() ~= "worldedit:brush" then
 115                         worldedit.player_notify(name, "Not holding brush item.")
 116                         return
 117                 end
 118
 119                 cmd = cmd:lower()
 120                 local meta = itemstack:get_meta()
 121                 if cmd == "none" then
 122                         meta:from_table(nil)
 123                         worldedit.player_notify(name, "Brush assignment cleared.")
 124                 else
 125                         local cmddef
 126                         if table.indexof(BRUSH_ALLOWED_COMMANDS, cmd) ~= -1 then
 127                                 cmddef = minetest.registered_chatcommands["/" .. cmd]
 128                         else
 129                                 cmddef = nil
 130                         end
 131                         if cmddef == nil then
 132                                 worldedit.player_notify(name, "Invalid command for brush use: //" .. cmd)
 133                                 return
 134                         end
 135                         meta:set_string("command", cmd)
 136                         meta:set_string("params", params)
 137                         local fullcmd = "//" .. cmd .. " " .. params
 138                         meta:set_string("description",
 139                                 minetest.registered_tools["worldedit:brush"].description .. ": " .. fullcmd)
 140                         worldedit.player_notify(name, "Brush assigned to command: " .. fullcmd)
 141                 end
 142                 minetest.get_player_by_name(name):set_wielded_item(itemstack)
 143         end,
 144 })