using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;

namespace Canvas
{
    public class InputManager : GameComponent
    {
        public InputManager(CanvasGame g) : base(g)
        {
            Game.Services.AddService(typeof(InputManager), this);
        }

        KeyboardState currentKeyboardState;
        KeyboardState oldKeyboardState;

        MouseState currentMouseState;
        MouseState oldMouseState;

        public override void Update(GameTime gameTime)
        {
            oldKeyboardState = currentKeyboardState;
            currentKeyboardState = Keyboard.GetState();

            oldMouseState = currentMouseState;
            currentMouseState = Mouse.GetState();
            base.Update(gameTime);
        }

        public bool IsKeyDown(Keys k)
        {
            return (oldKeyboardState.IsKeyUp(k) && currentKeyboardState.IsKeyDown(k));
        }

        public bool IsKeyUp(Keys k)
        {
            return (oldKeyboardState.IsKeyDown(k) && currentKeyboardState.IsKeyUp(k));
        }

        public MouseState GetState()
        {
            return currentMouseState;
        }
    }
}