public override void Update(GameTime gameTime)
{
if (InputEnabled)
{
KeyboardState keyState = Keyboard.GetState();
var deltaSeconds = (float)gameTime.ElapsedGameTime.TotalSeconds;
Vector2 moveDirection = Vector2.Zero;
float zoomDir = 0;
float rotationDir = 0;
if (keyState.IsKeyDown(Left))
{
moveDirection.X -= 1f;
}
if (keyState.IsKeyDown(Right))
{
moveDirection.X += 1f;
}
if (InvertedY && keyState.IsKeyDown(Down) || !InvertedY && keyState.IsKeyDown(Up))
{
moveDirection.Y += 1f;
}
if (InvertedY && keyState.IsKeyDown(Up) || !InvertedY && keyState.IsKeyDown(Down))
{
moveDirection.Y -= 1f;
}
if (keyState.IsKeyDown(ZoomIn))
{
zoomDir += 1;
}
if (keyState.IsKeyDown(ZoomOut))
{
zoomDir -= 1;
}
if (keyState.IsKeyDown(RotateLeft))
{
rotationDir += 1;
}
if (keyState.IsKeyDown(RotateRight))
{
rotationDir -= 1;
}
if (moveDirection != Vector2.Zero)
{
moveDirection.Normalize();
moveDirection = Vector2.TransformNormal(moveDirection, Matrix.CreateRotationZ(Rotation));
Position += moveDirection * MoveSpeed * deltaSeconds;
_dirty = true;
}
if (zoomDir != 0)
{
Scale = MathHelper.Clamp(Scale + zoomDir * ZoomSpeed * deltaSeconds, MinZoom, MaxZoom);
_dirty = true;
}
if (rotationDir != 0)
{
Rotation = MathHelper.WrapAngle(Rotation + rotationDir * RotationSpeed * deltaSeconds);
_dirty = true;
}
}
if (_dirty)
{
SetViewMatrix();
}
}