/// <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();
}
if (Keyboard.GetState().IsKeyDown(Keys.F1))
{
rays.lightTexture = Content.Load <Texture2D>("Textures/flare");
}
if (Keyboard.GetState().IsKeyDown(Keys.F2))
{
rays.lightTexture = Content.Load <Texture2D>("Textures/flare2");
}
if (Keyboard.GetState().IsKeyDown(Keys.F3))
{
rays.lightTexture = Content.Load <Texture2D>("Textures/flare3");
}
if (Keyboard.GetState().IsKeyDown(Keys.F4))
{
rays.lightTexture = Content.Load <Texture2D>("Textures/flare4");
}
if (Keyboard.GetState().IsKeyDown(Keys.F12))
{
ppm.SaveTexture((Texture2D)rays.lightTexture, "c:\\temp\\godray.jpeg");
}
if (Keyboard.GetState().IsKeyDown(Keys.W))
{
rays.lightSource = new Vector2(rays.lightSource.X, rays.lightSource.Y - .01f);
}
if (Keyboard.GetState().IsKeyDown(Keys.S))
{
rays.lightSource = new Vector2(rays.lightSource.X, rays.lightSource.Y + .01f);
}
if (Keyboard.GetState().IsKeyDown(Keys.A))
{
rays.lightSource = new Vector2(rays.lightSource.X - .01f, rays.lightSource.Y);
}
if (Keyboard.GetState().IsKeyDown(Keys.D))
{
rays.lightSource = new Vector2(rays.lightSource.X + .01f, rays.lightSource.Y);
}
if (Keyboard.GetState().IsKeyDown(Keys.Q))
{
rays.Exposure += .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.Z))
{
rays.Exposure -= .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.E))
{
rays.LightSourceSize += .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.C))
{
rays.LightSourceSize -= .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.R))
{
rays.Density += .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.V))
{
rays.Density -= .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.T))
{
rays.Decay += .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.B))
{
rays.Decay -= .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.Y))
{
rays.Weight += .01f;
}
if (Keyboard.GetState().IsKeyDown(Keys.N))
{
rays.Weight -= .01f;
}
base.Update(gameTime);
}