예제 #1
0
        /// <summary>
        /// Responds to user input, changing the selected entry and accepting
        /// or cancelling the menu.
        /// </summary>
        public override void HandleInput(InputState input)
        {
            int usedToBe = selectedEntry;

            // Move to the previous menu entry?
            if (input.IsMenuUp(ControllingPlayer))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                selectedEntry--;
                if (selectedEntry < 0)
                {
                    selectedEntry = menuEntries.Count - 1;
                }

                // here we do only one attempt to skip read-only item
                while (menuEntries[selectedEntry].ReadOnly && (selectedEntry != usedToBe))
                {
                    selectedEntry--;
                    if (selectedEntry < 0)
                    {
                        selectedEntry = menuEntries.Count - 1;
                    }
                }
                OnActiveMenuItemChanged(ControllingPlayer.HasValue ? ControllingPlayer.Value : PlayerIndex.One);
            }

            // Move to the next menu entry?
            if (input.IsMenuDown(ControllingPlayer))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                selectedEntry++;
                if (selectedEntry >= menuEntries.Count)
                {
                    selectedEntry = 0;
                }

                // here we do only one attempt to skip read-only item
                while (menuEntries[selectedEntry].ReadOnly && (selectedEntry != usedToBe))
                {
                    selectedEntry++;
                    if (selectedEntry >= menuEntries.Count)
                    {
                        selectedEntry = 0;
                    }
                }
                OnActiveMenuItemChanged(ControllingPlayer.HasValue ? ControllingPlayer.Value : PlayerIndex.One);
            }

            // Accept or cancel the menu? We pass in our ControllingPlayer, which may
            // either be null (to accept input from any player) or a specific index.
            // If we pass a null controlling player, the InputState helper returns to
            // us which player actually provided the input. We pass that through to
            // OnSelectEntry and OnCancel, so they can tell which player triggered them.
            PlayerIndex playerIndex;

            if (input.IsMenuLeft(ControllingPlayer, out playerIndex))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                OnLeftEntry(selectedEntry, playerIndex);
            }
            else if (input.IsMenuRight(ControllingPlayer, out playerIndex))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                OnRightEntry(selectedEntry, playerIndex);
            }
            else if (input.IsMenuSelect(ControllingPlayer, out playerIndex))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                OnSelectEntry(selectedEntry, playerIndex);
            }
            else if (input.IsMenuCancel(ControllingPlayer, out playerIndex))
            {
                evdEnGlobals.soundBank.PlayCue("menu");
                OnCancel(playerIndex);
            }
        }