Fog of war

Three states per patch of ground: unexplored (black), explored (dim) and visible. Vision sources reveal the area around them; a URP renderer feature draws the result over the scene, and an optional culler hides objects in the dark.

Setup

1. Add Vantage → Fog Of War → VtFogOfWar to a scene object. Set Pixels Per Unit for resolution and the three alphas for the look.
2. In your URP Renderer asset add the Fog Of War Renderer Feature and assign the FogOfWarScreen material that ships with the package. Enable Depth Texture on the URP asset.
3. Set Vision Radius on the player’s unit definition. Units with a radius above 0 get a VtVisionSource and reveal the fog around them. Add Vantage → Fog Of War → VtVisionSource by hand to anything else that should see, such as a watchtower. Anything can implement IVtVisionSource and call VtFogOfWar.RegisterSource if the component does not fit.

Hiding things in the fog

Add VtFogOfWarCuller to the scene once, then VtFogCullable to any object that should react:

Explored Dim sets how dark an explored object gets. Put VtFogOfWarExclude on objects that must never be affected, such as the player.

Queries

VtFogOfWar.Instance.IsVisible(worldPos);
VtFogOfWar.Instance.IsExplored(worldPos);
VtFogOfWar.Instance.FogEnabled = false;

Call Reinitialize after changing the terrain size at runtime.