Added a WorldEdit wand item that can be used to select areas with worldedit.

worldedit/init.lua

@@ -36,6 +36,7 @@ load_module(path .. "/visualization.lua")
 load_module(path .. "/serialization.lua")
 load_module(path .. "/code.lua")
 load_module(path .. "/compatibility.lua")
+load_module(path .. "/wand.lua")
 
 
 if minetest.setting_getbool("log_mods") then

worldedit/wand.lua

@@ -0,0 +1,64 @@
+-- TODO: Add inventory image
+
+minetest.register_tool( "worldedit:wand",
+{
+    description = "WorldEdit Wand. Left-click with it to set the first WorldEdit position, Right-click to set the second WorldEdit position.",
+    groups = {}, 
+    inventory_image = "default_book.png", -- TODO
+    wield_image = "",
+    wield_scale = {x=1,y=1,z=1},
+    stack_max = 1, -- there is no need to have more than one
+    liquids_pointable = true, -- ground with only water on can be owned as well
+    -- the tool_capabilities are completely irrelevant here - no need to dig
+    tool_capabilities = {
+        full_punch_interval = 1.0,
+        max_drop_level=0,
+        groupcaps={
+            fleshy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
+            snappy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
+            choppy={times={[3]=0.90}, maxwear=0.05, maxlevel=0}
+        }
+    },
+    node_placement_prediction = nil,
+
+    on_use = function(itemstack, placer, pointed_thing)
+       if ( placer ~= nil and pointed_thing ~= nil) then
+		  local name = placer:get_player_name();
+		  local pos  = minetest.get_pointed_thing_position( pointed_thing, false ); -- not above
+
+		  if( not( pos ) or not( pos.x )) then
+			 return itemstack;
+		  end
+
+		  worldedit.pos1[name] = pos
+		  worldedit.mark_pos1(name);
+
+	   end
+       return itemstack; -- nothing consumed, nothing changed
+    end,
+     
+
+    on_place = function(itemstack, placer, pointed_thing)
+       if( placer ~= nil and pointed_thing ~= nil) then
+		  local name = placer:get_player_name();
+		  local pos  = minetest.get_pointed_thing_position( pointed_thing, false ); -- not above
+
+		  if( not( pos ) or not( pos.x )) then
+			 return itemstack;
+		  end
+
+		  worldedit.pos2[name] = pos;
+		  worldedit.mark_pos2(name);
+	   end
+       return itemstack; -- nothing consumed, nothing changed
+    end,
+})
+
+
+-- minetest.register_craft({
+-- 	  output = "worldedit:wand",});
+--  recipe = { { "markers:mark" },
+--             { "markers:stone" },
+--             { "default:book"}
+--            } });
+