public override void Update(GameTime gameTime)
{
base.Update(gameTime);
_scene.Update((float)gameTime.ElapsedGameTime.TotalSeconds);
var deltaTime = gameTime.Seconds();
var time = gameTime.TotalSeconds();
MouseState mouse = Mouse.GetState();
KeyboardState keyboard = Keyboard.GetState();
foreach (var decals in _scene.Entities.Select(a => a.GetBehaviour<Decal>(null)).Where(a => a != null))
decals.Color = new Vector4(time % 1, 1, 1, 1);
Game.IsMouseVisible = false;
if (mouse.IsButtonDown(MouseButtons.Right))
{
var resolution = new Vector2(Game.GraphicsDevice.Viewport.Width, Game.GraphicsDevice.Viewport.Height);
var mousePosition = new Vector2(mouse.X, mouse.Y);
var mouseDelta = mousePosition - resolution / 2;
_cameraRotation.Y -= mouseDelta.X * deltaTime * 0.1f;
_cameraRotation.X -= mouseDelta.Y * deltaTime * 0.1f;
var rotation = Matrix.CreateFromYawPitchRoll(_cameraRotation.Y, _cameraRotation.X, _cameraRotation.Z);
var forward = Vector3.TransformNormal(Vector3.Forward, rotation);
var right = Vector3.TransformNormal(Vector3.Right, rotation);
forward.Normalize();
right.Normalize();
if (keyboard.IsKeyDown(Keys.W))
_cameraPosition += forward * deltaTime * 50;
if (keyboard.IsKeyDown(Keys.S))
_cameraPosition -= forward * deltaTime * 50f;
if (keyboard.IsKeyDown(Keys.A))
_cameraPosition -= right * deltaTime * 50f;
if (keyboard.IsKeyDown(Keys.D))
_cameraPosition += right * deltaTime * 50f;
_camera.View = Matrix.CreateLookAt(_cameraPosition, _cameraPosition + forward, Vector3.Cross(right, forward));
Mouse.SetPosition((int)resolution.X / 2, (int)resolution.Y / 2);
}
}