Non allocating, lazy loaded, Unity Physics.OverlapSphere

entity.cs

    /// <summary>
    /// Collider cache for non allocating physics calls. Lazy loaded.
    /// </summary>
    /// <example>
    /// Usage
    /// <code>
    /// float radius = 0.2f;
    /// int colliderCount = Physics.OverlapSphereNonAlloc(transform.position, radius: radius, results: ColliderCache);
    /// for (int i = 0; i<colliderCount; i++) {
    ///   ...
    /// }
    /// </code>
    /// </example>
    protected Collider[] ColliderCache {
      get {
        if (colliderCache == null) {
          colliderCache = new Collider[colliderCacheSize];
        }
        return colliderCache;
      }
    }
    protected int colliderCacheSize = 32;
    private Collider[] colliderCache;