feat: fix match positions in deathmatch

apps/arena/lib/arena/game_updater.ex

@@ -333,16 +333,17 @@ defmodule Arena.GameUpdater do
         {player_id, player, kills}
       end)
       |> Enum.sort_by(fn {_player_id, _player, kills} -> kills end, :desc)
+      |> Enum.with_index(1)
 
-    {winner_id, winner, _kills} = Enum.at(players, 0)
+    {{winner_id, winner, _kills}, _position} = Enum.at(players, 0)
 
     state =
       state
       |> put_in([:game_state, :status], :ENDED)
       |> update_in([:game_state], fn game_state ->
         players
-        |> Enum.reduce(game_state, fn {player_id, _player, _kills}, game_state_acc ->
-          put_player_position(game_state_acc, player_id)
+        |> Enum.reduce(game_state, fn {{player_id, _player, kills}, position}, game_state_acc ->
+          put_player_position(game_state_acc, player_id, position)
         end)
       end)
 
@@ -1851,6 +1852,13 @@ defmodule Arena.GameUpdater do
     update_in(game_state, [:positions], fn positions -> Map.put(positions, client_id, "#{next_position}") end)
   end
 
+  defp put_player_position(game_state, player_id, next_position) do
+    {client_id, _player_id} =
+      Enum.find(game_state.client_to_player_map, fn {_, map_player_id} -> map_player_id == player_id end)
+
+    update_in(game_state, [:positions], fn positions -> Map.put(positions, client_id, "#{next_position}") end)
+  end
+
   defp maybe_add_kill_to_player(%{players: players} = game_state, player_id) do
     if Map.has_key?(players, player_id) do
       update_in(game_state, [:players, player_id, :aditional_info, :kill_count], fn count ->