public void Render(GraphicsDevice device, IEnumerable <Visual> obstacles)
{
if (Power > 0)
{
// Compute the visibility mesh
VisibilityComputer visibility = new VisibilityComputer(Position, Radius);
foreach (Visual v in obstacles)
{
float width = v.Pose.Scale.X * v.Texture.Width;
visibility.AddSquareOccluder(v.Pose.Position, width, v.Pose.Rotation);
}
List <Vector2> encounters = visibility.Compute();
// Generate a triangle list from the encounter points
VertexPositionTexture[] vertices;
short[] indices;
TriangleListFromEncounters(encounters, out vertices, out indices);
// Project the vertices to the screen
ProjectVertices(vertices, device.PresentationParameters.BackBufferWidth,
device.PresentationParameters.BackBufferHeight);
// Apply the effect
lightEffect.Parameters["lightSource"].SetValue(Position);
lightEffect.Parameters["lightColor"].SetValue(Color.ToVector3() * Power);
lightEffect.Parameters["lightRadius"].SetValue(Radius);
lightEffect.Techniques[0].Passes[0].Apply();
// Draw the light on screen, using the triangle fan from the computed
// visibility mesh so that the light only influences the area that can be
// "seen" from the light's position.
device.DrawUserIndexedPrimitives <VertexPositionTexture>
(
PrimitiveType.TriangleList,
vertices,
0,
vertices.Length,
indices,
0,
indices.Length / 3
);
}
}
private void Awake()
{
_playerStore = FindObjectOfType <PlayerStore>();
_visibilityComputer = new VisibilityComputer();
_visibilityComputer.Radius = 30;
}
// Use this for initialization
void Start()
{
mVisibility = new VisibilityComputer(LightObject.transform.position, LightRange);
mShadowCasters = new List <ShadowCaster>();
}
