Working on it

Assets/Scripts/GameObjects/FadingTile.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class FadingTile : MonoBehaviour {
+	static LevelController levelController;
+
+	SpriteRenderer spriteRenderer;
+
+	void Awake() {
+		spriteRenderer = GetComponent<SpriteRenderer>();
+
+		if (!levelController) {
+			levelController = GameObject.Find("Level Controller").GetComponent<LevelController>();
+		}
+	}
+
+	void FixedUpdate() {
+		HandleAnimation();
+	}
+
+	void HandleAnimation() {
+		//determine the brightness based on distance from the center of the tilemap
+		float distance = Vector3.Distance(transform.localPosition, Vector3.zero) / 32f;
+
+		//bugfix for tile under the fire
+		if (distance == 0) {
+			distance = 0.5f;
+		}
+
+		float brightness = 1 - Mathf.Log(distance, 10) + levelController.globalLightLevel - 0.5f;
+
+		Color color = Color.white;
+		color.a = brightness;
+
+		spriteRenderer.color = color;
+	}
+}