C:/Doug/CSharp/XnaCollisionLib/XnaCollisionLib/Utils/Input.cs

Go to the documentation of this file.

using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;

namespace XnaCollisionLib.Utils
{
    public class Input
    {
        private KeyboardState _LastKeyboardState;
        private MouseState _LastMouseState;
        private Vector2 _Delta;

        public Input()
        {
            Mouse.SetPosition(400, 300);
            ResetMouseOnUpdate = true;

            _LastKeyboardState = Keyboard.GetState();
            _LastMouseState = Mouse.GetState();
            _Delta = new Vector2(0, 0);
        }

        public bool ResetMouseOnUpdate
        {
            get;
            set;
        }

        public Vector2 Delta
        {
            get { return _Delta; }
        }

        public Vector2 Location
        {
            get
            {
                MouseState mouseState = Mouse.GetState();

                return new Vector2(mouseState.X, mouseState.Y);
            }
        }

        public bool IsKeyPressed(Keys key)
        {
            KeyboardState keyboardState = Keyboard.GetState();

            return keyboardState.IsKeyDown(key) && !_LastKeyboardState.IsKeyDown(key);
        }

        public bool IsKeyDown(Keys key)
        {
            return Keyboard.GetState().IsKeyDown(key);
        }

        public bool IsButtonDown(int button)
        {
            MouseState mouseState = Mouse.GetState();

            if (button == 0)
                return mouseState.LeftButton == ButtonState.Pressed;
            else if (button == 1)
                return mouseState.MiddleButton == ButtonState.Pressed;
            else
                return mouseState.RightButton == ButtonState.Pressed;
        }

        public void Update()
        {
            MouseState mouseState = Mouse.GetState();

            if (ResetMouseOnUpdate)
            {
                _Delta = new Vector2(400 - mouseState.X, 300 - mouseState.Y);
                Mouse.SetPosition(400, 300);
            }
            else
            {
                Vector2 a, b;

                a.X = mouseState.X;
                a.Y = mouseState.Y;
                b.X = _LastMouseState.X;
                b.Y = _LastMouseState.Y;

                _Delta = a - b;
            }

            _LastKeyboardState = Keyboard.GetState();
            _LastMouseState = mouseState;
        }
    }
}