add doc comments for the Input namespace

src/Input/Axis.cs

@@ -3,6 +3,9 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Represents a specific joystick direction on a gamepad.
+	/// </summary>
 	public class Axis
 	{
 		public Gamepad Parent { get; }

src/Input/AxisButtonCode.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Can be used to access a gamepad axis virtual button without a direct reference to the button object.
+	/// </summary>
 	public enum AxisButtonCode
 	{
 		LeftX_Left,

src/Input/AxisCode.cs

@@ -1,6 +1,9 @@
 namespace MoonWorks.Input
 {
-	// Enum values are equivalent to SDL GameControllerAxis
+	/// <summary>
+	/// Can be used to access a gamepad axis without a direct reference to the axis object.
+	/// Enum values are equivalent to SDL_GameControllerAxis.
+	/// </summary>
 	public enum AxisCode
 	{
 		LeftX,

src/Input/ButtonCode.cs

@@ -1,6 +1,9 @@
 namespace MoonWorks.Input
 {
-	// Enum values are equivalent to the SDL GameControllerButton value.
+	/// <summary>
+	/// Can be used to access a gamepad button without a direct reference to the button object.
+ 	/// Enum values are equivalent to the SDL GameControllerButton value.
+	/// </summary>
 	public enum GamepadButtonCode
 	{
 		A,

src/Input/ButtonState.cs

@@ -1,14 +1,40 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Container for the current state of a binary input.
+	/// </summary>
 	public struct ButtonState
 	{
 		public ButtonStatus ButtonStatus { get; }
 
+		/// <summary>
+		/// True if the button was pressed this frame.
+		/// </summary>
 		public bool IsPressed => ButtonStatus == ButtonStatus.Pressed;
+
+		/// <summary>
+		/// True if the button was pressed this frame and the previous frame.
+		/// </summary>
 		public bool IsHeld => ButtonStatus == ButtonStatus.Held;
+
+		/// <summary>
+		/// True if the button was either pressed or continued to be held this frame.
+		/// </summary>
 		public bool IsDown => ButtonStatus == ButtonStatus.Pressed || ButtonStatus == ButtonStatus.Held;
+
+		/// <summary>
+		/// True if the button was let go this frame.
+		/// </summary>
 		public bool IsReleased => ButtonStatus == ButtonStatus.Released;
+
+		/// <summary>
+		/// True if the button was not pressed this frame or the previous frame.
+		/// </summary>
 		public bool IsIdle => ButtonStatus == ButtonStatus.Idle;
+
+		/// <summary>
+		/// True if the button was either idle or released this frame.
+		/// </summary>
 		public bool IsUp => ButtonStatus == ButtonStatus.Idle || ButtonStatus == ButtonStatus.Released;
 
 		public ButtonState(ButtonStatus buttonStatus)
@@ -43,7 +69,7 @@
 		}
 
 		/// <summary>
-		/// Combines two button states. Useful for alt controls or input buffering.
+		/// Combines two button states. Useful for alt control sets or input buffering.
 		/// </summary>
 		public static ButtonState operator |(ButtonState a, ButtonState b)
 		{

src/Input/ButtonStatus.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Represents the current status of a binary input.
+	/// </summary>
 	public enum ButtonStatus
 	{
 		/// <summary>

src/Input/DeviceKind.cs

@@ -1,10 +0,0 @@
-namespace MoonWorks.Input
-{
-    public enum DeviceKind
-    {
-		None,
-        Keyboard,
-        Mouse,
-        Gamepad,
-    }
-}

src/Input/Gamepad.cs

@@ -5,6 +5,12 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A Gamepad input abstraction that represents input coming from a console controller or other such devices.
+	/// The button names map to a standard Xbox 360 controller.
+	/// For different controllers the relative position of the face buttons will determine the button mapping.
+	/// For example on a DualShock controller the Cross button will map to the A button.
+	/// </summary>
 	public class Gamepad
 	{
 		internal IntPtr Handle;
@@ -51,7 +57,14 @@ namespace MoonWorks.Input
 
 		public bool IsDummy => Handle == IntPtr.Zero;
 
+		/// <summary>
+		/// True if any input on the gamepad is active. Useful for input remapping.
+		/// </summary>
 		public bool AnyPressed { get; private set; }
+
+		/// <summary>
+		/// Contains a reference to an arbitrary VirtualButton that was pressed on the gamepad this frame. Useful for input remapping.
+		/// </summary>
 		public VirtualButton AnyPressedButton { get; private set; }
 
 		private Dictionary<SDL.SDL_GameControllerButton, GamepadButton> EnumToButton;
@@ -195,7 +208,7 @@ namespace MoonWorks.Input
 			};
 		}
 
-		public void Register(IntPtr handle)
+		internal void Register(IntPtr handle)
 		{
 			Handle = handle;
 
@@ -203,7 +216,7 @@ namespace MoonWorks.Input
 			JoystickInstanceID = SDL.SDL_JoystickInstanceID(joystickHandle);
 		}
 
-		public void Unregister()
+		internal void Unregister()
 		{
 			Handle = IntPtr.Zero;
 			JoystickInstanceID = -1;
@@ -267,16 +280,25 @@ namespace MoonWorks.Input
 			) == 0;
 		}
 
+		/// <summary>
+		/// Obtains a gamepad button object given a button code.
+		/// </summary>
 		public GamepadButton Button(GamepadButtonCode buttonCode)
 		{
 			return EnumToButton[(SDL.SDL_GameControllerButton) buttonCode];
 		}
 
+		/// <summary>
+		/// Obtains an axis button object given a button code.
+		/// </summary>
 		public AxisButton Button(AxisButtonCode axisButtonCode)
 		{
 			return AxisButtonCodeToAxisButton[axisButtonCode];
 		}
 
+		/// <summary>
+		/// Obtains a trigger button object given a button code.
+		/// </summary>
 		public TriggerButton Button(TriggerCode triggerCode)
 		{
 			return TriggerCodeToTriggerButton[triggerCode];

src/Input/Input.cs

@@ -3,18 +3,36 @@ using System;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// The main container class for all input tracking.
+	/// Your Game class will automatically have a reference to this class.
+	/// </summary>
 	public class Inputs
 	{
 		public const int MAX_GAMEPADS = 4;
 
+		/// <summary>
+		/// The reference to the Keyboard input abstraction.
+		/// </summary>
 		public Keyboard Keyboard { get; }
+
+		/// <summary>
+		/// The reference to the Mouse input abstraction.
+		/// </summary>
 		public Mouse Mouse { get; }
 
-		Gamepad[] gamepads;
+		Gamepad[] Gamepads;
 
 		public static event Action<char> TextInput;
 
+		/// <summary>
+		/// True if any input on any input device is active. Useful for input remapping.
+		/// </summary>
 		public bool AnyPressed { get; private set; }
+
+		/// <summary>
+		/// Contains a reference to an arbitrary VirtualButton that was pressed this frame. Useful for input remapping.
+		/// </summary>
 		public VirtualButton AnyPressedButton { get; private set; }
 
 		internal Inputs()
@@ -22,12 +40,12 @@ namespace MoonWorks.Input
 			Keyboard = new Keyboard();
 			Mouse = new Mouse();
 
-			gamepads = new Gamepad[MAX_GAMEPADS];
+			Gamepads = new Gamepad[MAX_GAMEPADS];
 
 			// initialize dummy controllers
 			for (var slot = 0; slot < MAX_GAMEPADS; slot += 1)
 			{
-				gamepads[slot] = new Gamepad(IntPtr.Zero, slot);
+				Gamepads[slot] = new Gamepad(IntPtr.Zero, slot);
 			}
 		}
 
@@ -53,7 +71,7 @@ namespace MoonWorks.Input
 				AnyPressedButton = Mouse.AnyPressedButton;
 			}
 
-			foreach (var gamepad in gamepads)
+			foreach (var gamepad in Gamepads)
 			{
 				gamepad.Update();
 
@@ -65,6 +83,11 @@ namespace MoonWorks.Input
 			}
 		}
 
+		/// <summary>
+		/// Returns true if a gamepad is currently connected in the given slot.
+		/// </summary>
+		/// <param name="slot">Range: 0-3</param>
+		/// <returns></returns>
 		public bool GamepadExists(int slot)
 		{
 			if (slot < 0 || slot >= MAX_GAMEPADS)
@@ -72,13 +95,19 @@ namespace MoonWorks.Input
 				return false;
 			}
 
-			return !gamepads[slot].IsDummy;
+			return !Gamepads[slot].IsDummy;
 		}
 
-		// From 0-4
+		/// <summary>
+		/// Gets a gamepad associated with the given slot.
+		/// The first n slots are guaranteed to occupied with gamepads if they are connected.
+		/// If a gamepad does not exist for the given slot, a dummy object with all inputs in default state will be returned.
+		/// You can check if a gamepad is connected in a slot with the GamepadExists function.
+		/// </summary>
+		/// <param name="slot">Range: 0-3</param>
 		public Gamepad GetGamepad(int slot)
 		{
-			return gamepads[slot];
+			return Gamepads[slot];
 		}
 
 		internal void AddGamepad(int index)
@@ -95,7 +124,7 @@ namespace MoonWorks.Input
 					}
 					else
 					{
-						gamepads[slot].Register(openResult);
+						Gamepads[slot].Register(openResult);
 						System.Console.WriteLine($"Gamepad added to slot {slot}!");
 					}
 					return;
@@ -109,10 +138,10 @@ namespace MoonWorks.Input
 		{
 			for (int slot = 0; slot < MAX_GAMEPADS; slot += 1)
 			{
-				if (joystickInstanceID == gamepads[slot].JoystickInstanceID)
+				if (joystickInstanceID == Gamepads[slot].JoystickInstanceID)
 				{
-					SDL.SDL_GameControllerClose(gamepads[slot].Handle);
+					SDL.SDL_GameControllerClose(Gamepads[slot].Handle);
-					gamepads[slot].Unregister();
+					Gamepads[slot].Unregister();
 					System.Console.WriteLine($"Removing gamepad from slot {slot}!");
 					return;
 				}

src/Input/KeyCode.cs

@@ -1,6 +1,9 @@
 namespace MoonWorks.Input
 {
-	// Enum values are equivalent to the SDL Scancode value.
+	/// <summary>
+	/// Can be used to determine key state without a direct reference to the virtual button object.
+	/// Enum values are equivalent to the SDL Scancode value.
+	/// </summary>
 	public enum KeyCode : int
 	{
 		Unknown = 0,

src/Input/Keyboard.cs

@@ -4,12 +4,22 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// The keyboard input device abstraction.
+	/// </summary>
 	public class Keyboard
 	{
+		/// <summary>
+		/// True if any button on the keyboard is active. Useful for input remapping.
+		/// </summary>
 		public bool AnyPressed { get; private set; }
+
+		/// <summary>
+		/// Contains a reference to an arbitrary KeyboardButton that was pressed this frame. Useful for input remapping.
+		/// </summary>
 		public KeyboardButton AnyPressedButton { get; private set; }
 
-		public IntPtr State { get; private set; }
+		internal IntPtr State { get; private set; }
 
 		private KeyCode[] KeyCodes;
 		private KeyboardButton[] Keys { get; }
@@ -78,41 +88,65 @@ namespace MoonWorks.Input
 			}
 		}
 
+		/// <summary>
+		/// True if the button was pressed this frame.
+		/// </summary>
 		public bool IsPressed(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsPressed;
 		}
 
+		/// <summary>
+		/// True if the button was pressed this frame and the previous frame.
+		/// </summary>
 		public bool IsHeld(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsHeld;
 		}
 
+		/// <summary>
+		/// True if the button was either pressed or continued to be held this frame.
+		/// </summary>
 		public bool IsDown(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsDown;
 		}
 
+		/// <summary>
+		/// True if the button was let go this frame.
+		/// </summary>
 		public bool IsReleased(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsReleased;
 		}
 
+		/// <summary>
+		/// True if the button was not pressed this frame or the previous frame.
+		/// </summary>
 		public bool IsIdle(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsIdle;
 		}
 
+		/// <summary>
+		/// True if the button was either idle or released this frame.
+		/// </summary>
 		public bool IsUp(KeyCode keycode)
 		{
 			return Keys[(int) keycode].IsUp;
 		}
 
+		/// <summary>
+		/// Gets a reference to a keyboard button object using a key code.
+		/// </summary>
 		public KeyboardButton Button(KeyCode keycode)
 		{
 			return Keys[(int) keycode];
 		}
 
+		/// <summary>
+		/// Gets the state of a keyboard button from a key code.
+		/// </summary>
 		public ButtonState ButtonState(KeyCode keycode)
 		{
 			return Keys[(int) keycode].State;

src/Input/Mouse.cs

@@ -3,6 +3,9 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// The mouse input device abstraction.
+	/// </summary>
 	public class Mouse
 	{
 		public MouseButton LeftButton { get; }
@@ -21,12 +24,23 @@ namespace MoonWorks.Input
 		internal int WheelRaw;
 		private int previousWheelRaw = 0;
 
+		/// <summary>
+		/// True if any button on the keyboard is active. Useful for input remapping.
+		/// </summary>
 		public bool AnyPressed { get; private set; }
+
+		/// <summary>
+		/// Contains a reference to an arbitrary MouseButton that was pressed this frame. Useful for input remapping.
+		/// </summary>
 		public MouseButton AnyPressedButton { get; private set; }
 
-		public uint ButtonMask { get; private set; }
+		internal uint ButtonMask { get; private set; }
 
 		private bool relativeMode;
+		/// <summary>
+		/// If set to true, the cursor is hidden, the mouse position is constrained to the window,
+		/// and relative mouse motion will be reported even if the mouse is at the edge of the window.
+		/// </summary>
 		public bool RelativeMode
 		{
 			get => relativeMode;
@@ -42,6 +56,9 @@ namespace MoonWorks.Input
 		}
 
 		private bool hidden;
+		/// <summary>
+		/// If set to true, the OS cursor will not be shown in your application window.
+		/// </summary>
 		public bool Hidden
 		{
 			get => hidden;
@@ -54,7 +71,7 @@ namespace MoonWorks.Input
 
 		private readonly Dictionary<MouseButtonCode, MouseButton> CodeToButton;
 
-		public Mouse()
+		internal Mouse()
 		{
 			LeftButton = new MouseButton(this, MouseButtonCode.Left, SDL.SDL_BUTTON_LMASK);
 			MiddleButton = new MouseButton(this, MouseButtonCode.Middle, SDL.SDL_BUTTON_MMASK);
@@ -99,11 +116,17 @@ namespace MoonWorks.Input
 			}
 		}
 
+		/// <summary>
+		/// Gets a button from the mouse given a MouseButtonCode.
+		/// </summary>
 		public MouseButton Button(MouseButtonCode buttonCode)
 		{
 			return CodeToButton[buttonCode];
 		}
 
+		/// <summary>
+		/// Gets a button state from a mouse button corresponding to the given MouseButtonCode.
+		/// </summary>
 		public ButtonState ButtonState(MouseButtonCode buttonCode)
 		{
 			return CodeToButton[buttonCode].State;

src/Input/MouseButtonCode.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Can be used to determine virtual mouse button state without a direct reference to the button object.
+	/// </summary>
 	public enum MouseButtonCode
 	{
 		Left,

src/Input/Trigger.cs

@@ -3,6 +3,9 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// Represents a trigger input on a gamepad.
+	/// </summary>
 	public class Trigger
 	{
 		public Gamepad Parent { get; }

src/Input/TriggerCode.cs

@@ -1,6 +1,9 @@
 namespace MoonWorks.Input
 {
-	// Enum values correspond to SDL GameControllerAxis
+	/// <summary>
+	/// Can be used to determine trigger state or trigger virtual button state without direct reference to the trigger object or virtual button object.
+	/// Enum values correspond to SDL_GameControllerAxis.
+	/// </summary>
 	public enum TriggerCode
 	{
 		Left = 4,

src/Input/VirtualButton.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// VirtualButtons map inputs to binary inputs, like a trigger threshold or joystick axis threshold.
+	/// </summary>
 	public abstract class VirtualButton
 	{
 		public ButtonState State { get; protected set; }

src/Input/VirtualButtons/AxisButton.cs

@@ -1,5 +1,9 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A virtual button corresponding to a direction on a joystick.
+	/// If the axis value exceeds the threshold, it will be treated as a press.
+	/// </summary>
 	public class AxisButton : VirtualButton
 	{
 		public Axis Parent { get; }

src/Input/VirtualButtons/EmptyButton.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A dummy button that can never be pressed. Used for the dummy gamepad.
+	/// </summary>
 	public class EmptyButton : VirtualButton
 	{
 		internal override bool CheckPressed()

src/Input/VirtualButtons/GamepadButton.cs

@@ -2,6 +2,9 @@ using SDL2;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A virtual button corresponding to a gamepad button.
+	/// </summary>
 	public class GamepadButton : VirtualButton
 	{
 		public Gamepad Parent { get; }

src/Input/VirtualButtons/KeyboardButton.cs

@@ -2,6 +2,9 @@ using System.Runtime.InteropServices;
 
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A virtual button corresponding to a keyboard button.
+	/// </summary>
 	public class KeyboardButton : VirtualButton
 	{
 		Keyboard Parent;

src/Input/VirtualButtons/MouseButton.cs

@@ -1,5 +1,8 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A virtual button corresponding to a mouse button.
+	/// </summary>
 	public class MouseButton : VirtualButton
 	{
 		Mouse Parent;

src/Input/VirtualButtons/TriggerButton.cs

@@ -1,5 +1,9 @@
 namespace MoonWorks.Input
 {
+	/// <summary>
+	/// A virtual button corresponding to a trigger on a gamepad.
+	/// If the trigger value exceeds the threshold, it will be treated as a press.
+	/// </summary>
 	public class TriggerButton : VirtualButton
 	{
 		public Trigger Parent { get; }

src/Window.cs

@@ -5,6 +5,11 @@ using SDL2;
 
 namespace MoonWorks
 {
+	/// <summary>
+	/// Represents a window in the client operating system.
+	/// Every Game has a MainWindow automatically.
+	/// You can create dditional Windows if you desire. They must be Claimed by the GraphicsDevice to be rendered to.
+	/// </summary>
 	public class Window : IDisposable
 	{
 		internal IntPtr Handle { get; }