/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}
MouseState currentMouseState = Mouse.GetState();
_camera.Update(currentMouseState.X - _previousMouseState.X, currentMouseState.Y - _previousMouseState.Y);
if (currentMouseState.LeftButton == ButtonState.Pressed)
{
Ray pickingRay = Cursor.CalculateCursorRay(_projectionMatrix, _viewMatrix, new Vector2(_screenCenterX, _screenCenterY), GraphicsDevice);
Vector3 cubePosition;
Vector3 cubeNeighbor;
if (_gameWorld.SelectCube(pickingRay, out cubePosition, out cubeNeighbor))
{
if (!_lastCubeAdded.HasValue || _lastCubeAdded.Value != cubePosition)
{
_gameWorld.AddCube(cubeNeighbor, _activeCubeModelIndex);
_lastCubeAdded = cubeNeighbor;
}
}
}
if (currentMouseState.LeftButton == ButtonState.Released && _previousMouseState.LeftButton == ButtonState.Pressed)
{
_lastCubeAdded = null;
}
if (currentMouseState.RightButton == ButtonState.Released &&
_previousMouseState.RightButton == ButtonState.Pressed &&
currentMouseState.X > _previousMouseState.X - 2 &&
currentMouseState.X < _previousMouseState.X + 2 &&
currentMouseState.Y > _previousMouseState.Y - 2 &&
currentMouseState.Y < _previousMouseState.Y + 2)
{
Ray pickingRay = Cursor.CalculateCursorRay(_projectionMatrix, _viewMatrix, new Vector2(currentMouseState.X, currentMouseState.Y), GraphicsDevice);
Vector3 cubePosition;
Vector3 cubeNeighbor;
if (_gameWorld.SelectCube(pickingRay, out cubePosition, out cubeNeighbor))
{
_gameWorld.DeleteCube(cubePosition);
}
}
Mouse.SetPosition(_screenCenterX, _screenCenterY);
_previousMouseState = Mouse.GetState();
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.W))
{
_camera.MoveForward(gameTime, keyState.IsKeyDown(Keys.LeftShift));
}
if (keyState.IsKeyDown(Keys.S))
{
_camera.MoveBackward(gameTime, keyState.IsKeyDown(Keys.LeftShift));
}
if (keyState.IsKeyDown(Keys.A))
{
_camera.StrafeLeft(gameTime, keyState.IsKeyDown(Keys.LeftShift));
}
if (keyState.IsKeyDown(Keys.D))
{
_camera.StrafeRight(gameTime, keyState.IsKeyDown(Keys.LeftShift));
}
if (keyState.IsKeyDown(Keys.Space))
{
_camera.FlyUp(gameTime);
}
if (keyState.IsKeyDown(Keys.D1))
{
if (_gameWorld.Cubes.Length > 0)
{
_activeCubeModelIndex = 0;
}
}
if (keyState.IsKeyDown(Keys.D2))
{
if (_gameWorld.Cubes.Length > 1)
{
_activeCubeModelIndex = 1;
}
}
if (keyState.IsKeyDown(Keys.D3))
{
if (_gameWorld.Cubes.Length > 2)
{
_activeCubeModelIndex = 2;
}
}
if (keyState.IsKeyDown(Keys.D4))
{
if (_gameWorld.Cubes.Length > 3)
{
_activeCubeModelIndex = 3;
}
}
if (keyState.IsKeyDown(Keys.D5))
{
if (_gameWorld.Cubes.Length > 4)
{
_activeCubeModelIndex = 4;
}
}
if (keyState.IsKeyDown(Keys.D6))
{
if (_gameWorld.Cubes.Length > 5)
{
_activeCubeModelIndex = 5;
}
}
if (keyState.IsKeyDown(Keys.D7))
{
if (_gameWorld.Cubes.Length > 6)
{
_activeCubeModelIndex = 6;
}
}
if (keyState.IsKeyDown(Keys.D8))
{
if (_gameWorld.Cubes.Length > 7)
{
_activeCubeModelIndex = 7;
}
}
if (keyState.IsKeyDown(Keys.D9))
{
if (_gameWorld.Cubes.Length > 8)
{
_activeCubeModelIndex = 8;
}
}
if (keyState.IsKeyDown(Keys.D0))
{
if (_gameWorld.Cubes.Length > 9)
{
_activeCubeModelIndex = 9;
}
}
if (keyState.IsKeyDown(Keys.LeftControl) && keyState.IsKeyUp(Keys.S) && _previousKeyboardState.IsKeyDown(Keys.S))
{
_gameWorld.Save("test.level");
}
if (keyState.IsKeyDown(Keys.LeftControl) && keyState.IsKeyUp(Keys.R) && _previousKeyboardState.IsKeyDown(Keys.R))
{
ComputeShadowMesh(_lightWorldPosition);
}
_previousKeyboardState = keyState;
_viewMatrix = Matrix.CreateLookAt(_camera.Position, _camera.FocalPoint, _camera.UpVector);
//_renderWithShadowsEffect.Parameters["ModelViewProjection"].SetValue(_viewMatrix * _projectionMatrix);
base.Update(gameTime);
}