KavTest/KavTest/Engines/InputEngine.cs

using Encompass;
using KavTest.Components;
using KavTest.Messages;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;

namespace KavTest.Engines
{
    [Reads(typeof(CameraComponent))]
    [Sends(
        typeof(MoveCameraMessage),
        typeof(RotateCameraMessage)
    )]
    public class InputEngine : Engine
    {
        private int centerX;
        private int centerY;

        public InputEngine(int centerX, int centerY)
        {
            this.centerX = centerX;
            this.centerY = centerY;
            Mouse.SetPosition(centerX, centerY);
            System.Console.WriteLine("initialize mouse position");
            System.Console.WriteLine(Mouse.GetState().X);
            System.Console.WriteLine(Mouse.GetState().Y);
        }

        public override void Update(double dt)
        {
            var keyboardState = Keyboard.GetState();
            var mouseState = Mouse.GetState();
            System.Console.WriteLine("mouse position");
            System.Console.WriteLine(mouseState.X);
            System.Console.WriteLine(mouseState.Y);

            if (keyboardState.IsKeyDown(Keys.W))
            {
                SendMessage(new MoveCameraMessage(new Vector3(0, 0, -5)));
            }

            if (keyboardState.IsKeyDown(Keys.A))
            {
                SendMessage(new MoveCameraMessage(new Vector3(-5, 0, 0)));
            }

            if (keyboardState.IsKeyDown(Keys.S))
            {
                SendMessage(new MoveCameraMessage(new Vector3(0, 0, 5)));
            }

            if (keyboardState.IsKeyDown(Keys.D))
            {
                SendMessage(new MoveCameraMessage(new Vector3(5, 0, 0)));
            }

            var mouseMovement = new Vector2(centerX - mouseState.X, centerY - mouseState.Y);
            Mouse.SetPosition(centerX, centerY);

            if (SomeComponent<CameraComponent>())
            {
                var cameraEntity = ReadEntity<CameraComponent>();
                SendMessage(new RotateCameraMessage(cameraEntity, mouseMovement.X, mouseMovement.Y));
            }
        }
    }
}