diff --git a/_arena_lib/arena_callbacks.lua b/_arena_lib/arena_callbacks.lua
index c064754..e98e2a8 100644
--- a/_arena_lib/arena_callbacks.lua
+++ b/_arena_lib/arena_callbacks.lua
@@ -257,7 +257,7 @@ function create_barrier_cage(player)
     }
 
     player:set_physics_override({gravity=0, jump=0})
-    player:add_player_velocity(vector.multiply(player:get_player_velocity(), -1))
+    player:add_velocity(vector.multiply(player:get_velocity(), -1))
 
     for _, relative_pos in pairs(glass_nodes) do
       local node_pos = vector.round(vector.add(original_pos, relative_pos))
@@ -303,7 +303,7 @@ function keep_teleporting(player, pos, seconds, current_second)
   if current_second > seconds then return end
 
   minetest.after(step, function()
-    player:add_player_velocity(vector.multiply(player:get_player_velocity(), -1))
+    player:add_velocity(vector.multiply(player:get_velocity(), -1))
     player:set_pos(pos)
     keep_teleporting(player, pos, seconds, current_second + step)
   end)
diff --git a/_map_handler/map_reset.lua b/_map_handler/map_reset.lua
index 1fb854c..875906e 100644
--- a/_map_handler/map_reset.lua
+++ b/_map_handler/map_reset.lua
@@ -1,15 +1,14 @@
-local function delete_drops() end
 local function async_reset_map() end
 local function reset_node_inventory() end
+local on_step = minetest.registered_entities["__builtin:item"].on_step
+minetest.registered_entities["__builtin:item"].match_id = -2
+minetest.registered_entities["__builtin:item"].last_age = 0
 local get_position_from_hash =  minetest.get_position_from_hash
 local hash_node_position = minetest.hash_node_position
 local deserialize = minetest.deserialize
 local add_node = minetest.add_node
 local get_node = minetest.get_node
 local get_inventory = minetest.get_inventory
-local on_step = minetest.registered_entities["__builtin:item"].on_step
-minetest.registered_entities["__builtin:item"].match_id = -2
-minetest.registered_entities["__builtin:item"].last_age = 0
 
 
 function skywars.reset_map(arena, debug, debug_data)
diff --git a/_map_handler/map_saving.lua b/_map_handler/map_saving.lua
index 5c489e4..82fae6a 100644
--- a/_map_handler/map_saving.lua
+++ b/_map_handler/map_saving.lua
@@ -3,7 +3,7 @@ local get_inventory = minetest.get_inventory
 local hash_node_position = minetest.hash_node_position
 
 
-minetest.register_on_placenode(function(pos, newnode, player, oldnode, itemstack, pointed_thing)
+minetest.register_on_placenode(function(pos, newnode, player, oldnode)
     local pl_name = player:get_player_name()
     local arena = arena_lib.get_arena_by_player(pl_name)
     if arena_lib.get_mod_by_player(pl_name) ~= "skywars" then return end
@@ -113,7 +113,7 @@ function save_node(arena, pos, node)
     if not arena then return end
     initialize_map_data(maps, arena)
 
-    -- If this block has not been changed yet then save it.
+    -- If this node has not been changed yet then save it.
     if not maps[arena.name].changed_nodes[hash_pos] then
         maps[arena.name].changed_nodes[hash_pos] = node
         skywars.overwrite_table("maps", maps)
@@ -127,34 +127,4 @@ function initialize_map_data(maps, arena)
     if not maps[arena.name] then maps[arena.name] = {} end
     if not maps[arena.name].changed_nodes then maps[arena.name].changed_nodes = {} end
     if not maps[arena.name].always_to_be_reset_nodes then maps[arena.name].always_to_be_reset_nodes = {} end
-end
-
-
-
---
--- ! LEGACY SUPPORT FOR SERIALIZED POSITIONS.
--- Converting all the serialized positions into
--- hashes.
---
-local maps = skywars.load_table("maps")
-
-for arena_name, map in pairs(maps) do
-    initialize_map_data(maps, {name = arena_name})
-
-    for pos, node in pairs(map.changed_nodes) do
-        if minetest.deserialize(pos) and pos then
-            local hash_pos = minetest.hash_node_position(minetest.deserialize(pos))
-            map.changed_nodes[pos] = nil
-            map.changed_nodes[hash_pos] = node
-        end
-    end
-    for pos, bool in pairs(map.always_to_be_reset_nodes) do
-        if minetest.deserialize(pos) and pos then
-            local hash_pos = minetest.hash_node_position(minetest.deserialize(pos))
-            map.always_to_be_reset_nodes[pos] = nil
-            map.always_to_be_reset_nodes[hash_pos] = bool
-        end
-    end
-end
-
-skywars.overwrite_table("maps", maps)
\ No newline at end of file
+end
\ No newline at end of file