Add initial menu system

EvilSatellites/Menu/MenuContainer.cs

@@ -9,5 +9,19 @@ namespace EvilSatellites.Menu
     public class MenuContainer
     {
         public List<MenuEntry> Entries;
+        public string Title;
+        public string Description;
+        public MenuContainer(string title, string description)
+        {
+            Entries = new List<MenuEntry>();
+            Title = title;
+            Description = description;
+        }
+
+        public MenuContainer Add(MenuEntry entry)
+        {
+            Entries.Add(entry);
+            return this;
+        }
     }
 }

EvilSatellites/Menu/MenuEntry.cs

@@ -9,5 +9,11 @@ namespace EvilSatellites.Menu
     public class MenuEntry
     {
         public string Name;
+        public string Description;
+        public MenuEntry(string name, string description = "")
+        {
+            Name = name;
+            Description = description;
+        }
     }
 }

EvilSatellites/ScreenManager.cs

@@ -26,7 +26,7 @@ namespace EvilSatellites
             EnvironmentEffect = Sound.CreateReverb();
             EnvironmentEffect.Delay = 0.03;
             EnvironmentEffect.Wet = 30;
-            EnvironmentEffect.T60 = 5;
+            EnvironmentEffect.T60 = 1;
             EnvironmentEffect.Defusion = 1f;
             EnvironmentEffect.FreePath = 0.02;
             

EvilSatellites/Screens/MenuScreen.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using EvilSatellites.Menu;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Input;
+using DavyKager;
+
+namespace EvilSatellites.Screens
+{
+    public class MenuScreen : IScreen
+    {
+        public MenuContainer MenuOptions;
+        public int CursorPosition;
+        public ScreenManager _Manager;
+        public ScreenState _State;
+        public InputManager Inputs = new InputManager();
+        public MenuScreen(ScreenManager manager, MenuContainer options)
+        {
+            _Manager = manager;
+            MenuOptions = options;
+        }
+
+        ScreenManager IScreen.Manager { get => _Manager; set => _Manager = value; }
+        ScreenState IScreen.State { get => _State; set => _State = value; }
+
+        void IScreen.Activate()
+        {
+            CursorPosition = 0;
+            Tolk.Output(MenuOptions.Title, true);
+            Tolk.Output(MenuOptions.Description, false);
+            Tolk.Output(MenuOptions.Entries[CursorPosition].Name);
+        }
+
+        void IScreen.Deactivate()
+        {
+            return;
+        }
+
+        void IScreen.HandleInput(GameTime gameTime, KeyboardState inputs)
+        {
+            Inputs.Update();
+            if (Inputs.IsJustPressed(Keys.Down))
+            {
+                NextItem();
+            }
+            if (Inputs.IsJustPressed(Keys.Down))
+            {
+                PreviousItem();
+            }
+            if (Inputs.IsJustPressed(Keys.Enter))
+            {
+                SelectItem();
+            }
+        }
+
+        void IScreen.Update(GameTime gameTime)
+        {
+            return;
+        }
+
+        public void PreviousItem()
+        {
+            CursorPosition--;
+            CheckMenuBounds();
+            ReadMenuItem();
+        }
+
+        public void NextItem()
+        {
+            CursorPosition++;
+            CheckMenuBounds();
+            ReadMenuItem();
+        }
+
+        public void CheckMenuBounds()
+        {
+            if (CursorPosition > MenuOptions.Entries.Count-1)
+            {
+                CursorPosition = 0;
+            }
+            if (CursorPosition < 0)
+            {
+                CursorPosition = MenuOptions.Entries.Count - 1;
+            }
+        }
+
+        public void ReadMenuItem()
+        {
+            Tolk.Output(MenuOptions.Entries[CursorPosition].Name, true);
+        }
+
+        public void SelectItem()
+        {
+            return;
+        }
+    }
+}