/// <summary>
        /// Responds to user input, accepting or cancelling the message box.
        /// </summary>
        public override void HandleInput(InputState input)
        {
            if (input.MenuCancel)
            {
                ExitScreen();
            }

            if (input.MenuSelect && World.ShipManager.SelectedPlayers.Any())
            {
                var arenaSelection = new ArenaSelectionScreen
                {
                    ScreenManager = this.ScreenManager
                };
                arenaSelection.Initialize();
                ScreenManager.AddScreen(arenaSelection);
            }

            if (World.ShipManager.SelectedPlayers.Any(p => p.PlayerStringToIndex == PlayerIndex.One))
            {
                if (input.IsNewButtonPress(Buttons.DPadUp) || input.IsNewButtonPress(Buttons.LeftThumbstickUp))
                {
                    ChangePlayerColour(PlayerIndex.One);
                }

                if (input.IsNewButtonPress(Buttons.RightShoulder))
                {
                    ChangePlayerShip(PlayerIndex.One);
                }
            }

            if (World.ShipManager.SelectedPlayers.Any(p => p.PlayerStringToIndex == PlayerIndex.Two))
            {
                if (input.IsNewButtonPress(Buttons.DPadUp) || input.IsNewButtonPress(Buttons.LeftThumbstickUp))
                {
                    ChangePlayerColour(PlayerIndex.Two);
                }

                if (input.IsNewButtonPress(Buttons.RightShoulder))
                {
                    ChangePlayerShip(PlayerIndex.Two);
                }
            }

            if (World.ShipManager.SelectedPlayers.Any(p => p.PlayerStringToIndex == PlayerIndex.Three))
            {
                if (input.IsNewKeyPress(Keys.W))
                {
                    ChangePlayerColour(PlayerIndex.Three);
                }

                if (input.IsNewKeyPress(Keys.Tab))
                {
                    ChangePlayerShip(PlayerIndex.Three);
                }
            }

            if (World.ShipManager.SelectedPlayers.Any(p => p.PlayerStringToIndex == PlayerIndex.Four))
            {
                if (input.IsNewKeyPress(Keys.Up))
                {
                    ChangePlayerColour(PlayerIndex.Four);
                }

                if (input.IsNewKeyPress(Keys.RightAlt))
                {
                    ChangePlayerShip(PlayerIndex.Four);
                }
            }
        }