Table of Contents

Custom Hider Behaviors

The built-in Hider Behaviors cover common cases, but it's easy to write your own. Subclass HiderBehavior and implement the OnReveal() and OnHide() methods with your logic.

Minimal Example

using FOW;
using UnityEngine;

public class HiderFadeAlpha : HiderBehavior
{
    [SerializeField] CanvasGroup group;

    protected override void OnReveal()
    {
        // called when a revealer sees this hider
        group.alpha = 1f;
    }

    protected override void OnHide()
    {
        // called when the hider leaves all lines of sight
        group.alpha = 0f;
    }
}

How It Works

  • HiderBehavior requires a Fog Of War Hider on the same GameObject (enforced with [RequireComponent]).
  • On Awake, the base class calls OnHide() once and subscribes to the hider's visibility event — so objects begin in the hidden state.
  • When visibility changes, OnReveal() or OnHide() is called accordingly.
Note

If you override Awake in your subclass, call base.Awake() so the subscription is set up.

Detecting Per-Revealer Visibility

A HiderBehavior reacts to the hider's overall state. If you instead need to know which revealer saw the hider (for example, to attribute a sighting to a specific player), subscribe to the revealer's event — see Hider Visibility Events.