worldedit_brush/init.lua

   1 if minetest.raycast == nil then
   2         error(
   3                 "worldedit_brush requires at least Minetest 5.0"
   4         )
   5 end
   6
   7 local BRUSH_MAX_DIST = 150
   8 local BRUSH_ALLOWED_COMMANDS = {
   9         -- basically everything that only needs pos1
  10         "cube",
  11         "cylinder",
  12         "dome",
  13         "hollowcube",
  14         "hollowcylinder",
  15         "hollowdome",
  16         "hollowpyramid",
  17         "hollowsphere",
  18         "load",
  19         "pyramid",
  20         "sphere",
  21         "spiral",
  22
  23         "cyl",
  24         "do",
  25         "hcube",
  26         "hcyl",
  27         "hdo",
  28         "hpyr",
  29         "hspr",
  30         "l",
  31         "pyr",
  32         "spr",
  33         "spl",
  34 }
  35 local brush_on_use = function(itemstack, placer)
  36         local meta = itemstack:get_meta()
  37         local name = placer:get_player_name()
  38
  39         local cmd = meta:get_string("command")
  40         if cmd == "" then
  41                 worldedit.player_notify(name,
  42                         "This brush is not bound, use //brush to bind a command to it.")
  43                 return false
  44         end
  45         local cmddef = minetest.registered_chatcommands["/" .. cmd]
  46         if cmddef == nil then return false end -- shouldn't happen as //brush checks this
  47         local has_privs, missing_privs = minetest.check_player_privs(name, cmddef.privs)
  48         if not has_privs then
  49                 worldedit.player_notify(name,
  50                         "Missing privileges: " .. table.concat(missing_privs, ", "))
  51                 return false
  52         end
  53
  54         local raybegin = vector.add(placer:get_pos(),
  55                 {x=0, y=placer:get_properties().eye_height, z=0})
  56         local rayend = vector.add(raybegin, vector.multiply(placer:get_look_dir(), BRUSH_MAX_DIST))
  57         local ray = minetest.raycast(raybegin, rayend, false, true)
  58         local pointed_thing = ray:next()
  59         if pointed_thing == nil then
  60                 worldedit.player_notify(name, "Too far away.")
  61                 return false
  62         end
  63
  64         assert(pointed_thing.type == "node")
  65         worldedit.pos1[name] = pointed_thing.under
  66         worldedit.pos2[name] = nil
  67         worldedit.mark_region(name)
  68         -- is this a horrible hack? oh yes.
  69         worldedit._override_safe_regions = true
  70         local player_notify_old = worldedit.player_notify
  71         worldedit.player_notify = function(name, msg)
  72                 if string.match(msg, "^%d") then return end -- discard "1234 nodes added."
  73                 return player_notify_old(name, msg)
  74         end
  75
  76         minetest.log("action", string.format("%s uses WorldEdit brush (//%s) at %s",
  77                 name, cmd, minetest.pos_to_string(pointed_thing.under)))
  78         cmddef.func(name, meta:get_string("params"))
  79
  80         worldedit._override_safe_regions = false
  81         worldedit.player_notify = player_notify_old
  82         return true
  83 end
  84
  85 minetest.register_tool(":worldedit:brush", {
  86         description = "WorldEdit Brush",
  87         inventory_image = "worldedit_brush.png",
  88         stack_max = 1, -- no need to stack these (metadata prevents this anyway)
  89         range = 0,
  90         on_use = function(itemstack, placer, pointed_thing)
  91                 brush_on_use(itemstack, placer)
  92                 return itemstack -- nothing consumed, nothing changed
  93         end,
  94 })
  95
  96 minetest.register_chatcommand("/brush", {
  97         privs = {worldedit=true},
  98         params = "none/<cmd> [parameters]",
  99         description = "Assign command to WorldEdit brush item",
 100         func = function(name, param)
 101                 local found, _, cmd, params = param:find("^([^%s]+)%s+(.+)$")
 102                 if not found then
 103                         params = ""
 104                         found, _, cmd = param:find("^(.+)$")
 105                 end
 106                 if not found then
 107                         worldedit.player_notify(name, "Invalid usage.")
 108                         return
 109                 end
 110
 111                 local itemstack = minetest.get_player_by_name(name):get_wielded_item()
 112                 if itemstack == nil or itemstack:get_name() ~= "worldedit:brush" then
 113                         worldedit.player_notify(name, "Not holding brush item.")
 114                         return
 115                 end
 116
 117                 cmd = cmd:lower()
 118                 local meta = itemstack:get_meta()
 119                 if cmd == "none" then
 120                         meta:from_table(nil)
 121                         worldedit.player_notify(name, "Brush assignment cleared.")
 122                 else
 123                         local cmddef
 124                         if table.indexof(BRUSH_ALLOWED_COMMANDS, cmd) ~= -1 then
 125                                 cmddef = minetest.registered_chatcommands["/" .. cmd]
 126                         else
 127                                 cmddef = nil
 128                         end
 129                         if cmddef == nil then
 130                                 worldedit.player_notify(name, "Invalid command for brush use: //" .. cmd)
 131                                 return
 132                         end
 133                         meta:set_string("command", cmd)
 134                         meta:set_string("params", params)
 135                         local fullcmd = "//" .. cmd .. " " .. params
 136                         meta:set_string("description",
 137                                 minetest.registered_tools["worldedit:brush"].description .. ": " .. fullcmd)
 138                         worldedit.player_notify(name, "Brush assigned to command: " .. fullcmd)
 139                 end
 140                 minetest.get_player_by_name(name):set_wielded_item(itemstack)
 141         end,
 142 })