Today I was working on a small prototype, however I got carried away a bit with the input management. In the end I spend nearly an hour working on “the mother of all InputManagers”. To spare you from this, I’ve decided to put the snippet online.
Features:
-Registers input from keyboard or gamepad.
-Left, Right, Up, Down mapped to gamepad Dpad and gamepad left thumbstick at the same time.
-Settable deadzones for the gamepad thumbsticks
-Provides, button up, button down and button pressed methods.
The code: (be sure to see the test code as well, at the bottom of this post)
public class InputManager
{
public InputManager(InputType type, PlayerIndex player)
{
this.inputType = type;
this.playerIndex = player;
//Fill dictionaries, TODO: bring this out into an xml file
inputToKeys = new Dictionary<Inputs, Keys>(10);
inputToKeys.Add(Inputs.A, Keys.A);
inputToKeys.Add(Inputs.B, Keys.S);
inputToKeys.Add(Inputs.Back, Keys.Escape);
inputToKeys.Add(Inputs.Down, Keys.Down);
inputToKeys.Add(Inputs.Left, Keys.Left);
inputToKeys.Add(Inputs.Right, Keys.Right);
inputToKeys.Add(Inputs.Start, Keys.Space);
inputToKeys.Add(Inputs.Up, Keys.Up);
inputToKeys.Add(Inputs.X, Keys.Z);
inputToKeys.Add(Inputs.Y, Keys.X);
inputToButtons = new Dictionary<Inputs, Buttons>(10);
inputToButtons.Add(Inputs.A, Buttons.A);
inputToButtons.Add(Inputs.B, Buttons.B);
inputToButtons.Add(Inputs.Back, Buttons.Back);
inputToButtons.Add(Inputs.Down, Buttons.DPadDown);
inputToButtons.Add(Inputs.Left, Buttons.DPadLeft);
inputToButtons.Add(Inputs.Right, Buttons.DPadRight);
inputToButtons.Add(Inputs.Start, Buttons.Start);
inputToButtons.Add(Inputs.Up, Buttons.DPadUp);
inputToButtons.Add(Inputs.X, Buttons.X);
inputToButtons.Add(Inputs.Y, Buttons.Y);
//note that left, right, down and up are also mapped
//to the left thumbstick
}
public bool IsInputPressed(Inputs input)
{
if (inputType == InputType.Keyboard)
{
return (curState.IsKeyDown(inputToKeys[input])
&& !prevState.IsKeyDown(inputToKeys[input]));
}
else //inputType == InputType.Controller
{
//Check both left thumbstick dpad and buttons
return (StickDirectionDown(curPadState, input)
&& !StickDirectionDown(prevPadState, input))
|| (curPadState.IsButtonDown(inputToButtons[input])
&& !prevPadState.IsButtonDown(inputToButtons[input]));
}
}
public bool IsInputDown(Inputs input)
{
if (inputType == InputType.Keyboard)
{
return curState.IsKeyDown(inputToKeys[input]);
}
else //inputType == InputType.Controller
{
return (StickDirectionDown(curPadState, input)
|| curPadState.IsButtonDown(inputToButtons[input]));
}
}
public bool IsInputUp(Inputs input)
{
if (inputType == InputType.Keyboard)
{
return prevState.IsKeyUp(inputToKeys[input]);
}
else //inputType == InputType.Controller
{
return (!StickDirectionDown(curPadState, input)
&& prevPadState.IsButtonUp(inputToButtons[input]));
}
}
public bool StickDirectionDown(GamePadState gamePadState, Inputs input)
{
if (input == Inputs.Left)
{
return (gamePadState.ThumbSticks.Left.X < -thumbStickDeadzone);
}
else if (input == Inputs.Right)
{
return (gamePadState.ThumbSticks.Left.X > thumbStickDeadzone);
}
else if (input == Inputs.Up)
{
return (gamePadState.ThumbSticks.Left.Y > thumbStickDeadzone);
}
else if (input == Inputs.Down)
{
return (gamePadState.ThumbSticks.Left.Y < -thumbStickDeadzone);
}
return false;
}
public bool InputIsDirection(Inputs input)
{
return (input == Inputs.Left || input == Inputs.Right ||
input == Inputs.Up || input == Inputs.Down);
}
public void Update()
{
if (inputType == InputType.Keyboard)
{
prevState = curState;
curState = Keyboard.GetState();
}
else if (inputType == InputType.Controller)
{
prevPadState = curPadState;
curPadState = GamePad.GetState(playerIndex);
}
}
#region FieldsAndProperties
public float thumbStickDeadzone = 0.5f;
private Dictionary<Inputs, Keys> inputToKeys;
private Dictionary<Inputs, Buttons> inputToButtons;
private KeyboardState curState, prevState;
private GamePadState curPadState, prevPadState;
private InputType inputType;
private PlayerIndex playerIndex;
#endregion
}
public enum Inputs
{
A, B, X, Y, Left, Right, Up, Down, Start, Back
}
public enum InputType
{
Keyboard, Controller
}
Testcode:
InputManager input = new InputManager(InputType.Keyboard, PlayerIndex.One);
public void Update(GameTime gameTime){
input.Update();
foreach (object value in Enum.GetValues(typeof(Inputs)))
{
if (((Inputs)value) == Inputs.Left)
{
}
bool pressed = input.IsInputPressed((Inputs)value);
bool down = input.IsInputDown((Inputs)value);
bool notUp = !input.IsInputUp((Inputs)value);
if (pressed || down)
{
string message = "Input{3} was: Pressed({0}), Down({1}), NotUp({2})";
message = String.Format(message, pressed, down, notUp, Enum.GetName(typeof(Inputs), value));
Console.Out.WriteLine(message);
}
}
}
