Add meta editor

README.md

@@ -6,7 +6,7 @@ This is meant to be a simple tool for developers to use while attempting to debu
 Future tools and/or buttons are hidden from the creative inventory by default. To allow access in creative rather than just via `/giveme`, set `not_in_creative` to `0` in the `config.txt`.
 
 ### Planned Features
-- [ ] Meta/Inv Editor
+- [x] Meta/Inv Editor
 - [ ] Run Lua Code Under Environment (server won't crash)
 - [x] In-Game Formspec Editor (doc/form_editor.md)
 - [ ] In-Game HUD Editor (?)

config.txt

@@ -1,2 +1,4 @@
 not_in_creative = 1
 formspec_editor = true
+meta_editor = true
+inv_editor = true

init.lua

@@ -25,3 +25,8 @@ end
 if Settings.formspec_editor ~= false then
   dofile(modpath.."/form_editor.lua")
 end
+
+-- Load meta/inv editor
+if Settings.meta_editor ~= false then
+  dofile(modpath.."/meta_editor.lua")
+end

meta_editor.lua

@@ -0,0 +1,121 @@
+-- debugger/meta_editor.lua
+
+local meta_contexts = {}
+
+-- [table] Formspecs
+local forms = {
+  meta_main = {
+    get = function(name, pos)
+      local meta = minetest.get_meta(pos):to_table().fields
+
+      local keys = ""
+      local values = ""
+      for key, value in pairs(meta) do
+        keys  = keys..key..","
+        values = values..value..","
+      end
+
+      -- Remove final ","s
+      keys   = keys:sub(1, -2)
+      values = values:sub(1, -2)
+
+      meta_contexts[name] = {
+        pos    = pos,
+        keys   = keys,
+        values = values,
+      }
+
+      return [[
+        size[10,10]
+        tableoptions[highlight=#00000000]
+        table[-0.28,-0.29;4.7,10.7;keys;]]..keys..[[;1]
+        tableoptions[highlight=#467832]
+        table[4.4,-0.29;5.7,10.7;values;]]..values..[[;1]
+      ]]
+    end,
+    handle = function(name, fields)
+      if fields.values then
+        local s = fields.values:split(":")
+        if s[1] == "DCL" and tonumber(s[3]) ~= 0 then
+          debugger.show_meta(name, "meta_change", true, tonumber(s[2]))
+        end
+      end
+    end,
+  },
+  meta_change = {
+    get = function(name, id)
+      local meta = meta_contexts[name]
+      if not meta then return end
+
+      local key   = meta.keys:split(",")[id]
+      local value = meta.values:split(",")[id]
+
+      meta_contexts[name].key = key
+
+      return [[
+        size[10,5]
+        label[0,0;Editing: ]]..key..[[]
+        label[0,0.5;Old Value: ]]..value..[[]
+        field[0.3,1.3;9,1;value;;]]..value..[[]
+        button[0,2;2,1;back;< Back]
+        button[2,2;2,1;save;Save]
+      ]]
+    end,
+    handle = function(name, fields)
+      local meta = meta_contexts[name]
+      if not meta then return end
+      local pos  = meta.pos
+
+      if fields.back then
+        debugger.show_meta(name, "meta_main", true, pos)
+      end
+      if fields.save then
+        minetest.get_meta(pos):set_string(meta.key, fields.value)
+        debugger.show_meta(name, "meta_main", true, pos)
+      end
+    end,
+  },
+}
+
+-- [function] Show/Hide Formspecs
+function debugger.show_meta(pname, fname, show, ...)
+  if forms[fname] then
+    if not minetest.get_player_by_name(pname) then
+      return
+    end
+
+    if show ~= false then
+      minetest.show_formspec(pname, "debugger:"..fname, forms[fname].get(pname, ...))
+    else
+      minetest.close_formspec(pname, "debugger:"..fname)
+    end
+  end
+end
+
+-- [event] on receive fields
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+  local formname = formname:split(":")
+
+  if formname[1] == "debugger" and forms[formname[2]] then
+    local handle = forms[formname[2]].handle
+    if handle then
+      handle(player:get_player_name(), fields)
+    end
+  end
+end)
+
+-- [register] Editor tool
+minetest.register_craftitem("debugger:meta_editor", {
+  description = "[DEBUG] Node Meta Editor",
+  inventory_image = "debugger_meta_editor.png",
+  stack_max = 1,
+  groups = { not_in_creative_inventory = debugger.CREATIVE },
+
+  -- [on_use] Show editor
+  on_use = function(itemstack, player, pointed_thing)
+    local pos  = pointed_thing.under
+    local name = player:get_player_name()
+
+    debugger.show_meta(name, "meta_main", true, pos)
+  end,
+})