Add out-of-camp mechanic

Assets/Prefabs/Environment/Campfire.prefab

@@ -110,7 +110,11 @@ MonoBehaviour:
   RandomVarianceDuration: 0.2
   RandomVarianceMagnitude: 0.25
   LogBurningCooldown: 1
+  CampRadius: 10
+  OutOfCampFuelThreshold: 15
+  OutOfCampFuelRateMultiplier: 0.2
   Fuel: 60
+  OutOfCamp: 0
 --- !u!54 &7293540718676611162
 Rigidbody:
   m_ObjectHideFlags: 0

Assets/Scripts/Campfire.cs

@@ -15,8 +15,15 @@ public class Campfire : MonoBehaviour {
     [Tooltip("How long of a break the campfire takes between eating logs, if multiple are placed on it.")]
     public float LogBurningCooldown;
 
+    [Header("Out-of-camp mechanic")]
+    public float CampRadius;
+    [Tooltip("Fuel won't go below this threshold if the player is outside of the camp.")]
+    public float OutOfCampFuelThreshold;
+    public float OutOfCampFuelRateMultiplier;
+
     [Header("Runtime values")]
     public float Fuel;
+    public bool OutOfCamp = false;
     public float TimeToEnd {
         get {
             return Fuel - 0.7f;
@@ -33,12 +40,17 @@ public class Campfire : MonoBehaviour {
     private List<Item> LogQueue = new List<Item>();
     private float NextLogTime = 0;
 
+    private Transform Player;
+
     private void Awake() {
         EnoughFuelColor = DynamicLight.color;
         FullRange = DynamicLight.range;
+        Player = GameObject.FindGameObjectWithTag("Player").transform;
     }
 
     private void Update() {
+        TickFuel();
+
         if (LogQueue.Count > 0 && Time.time > NextLogTime) {
             if (BurnLog(LogQueue[0])) {
                 LogQueue.RemoveAt(0);
@@ -54,7 +66,6 @@ public class Campfire : MonoBehaviour {
         }
         RandomVariance = Mathf.Lerp(RandomVariance, NextRandomVariance, (Time.time - LastRandomVarianceChange) / RandomVarianceDuration);
 
-        Fuel = Mathf.Max(0, Fuel - Time.deltaTime);
         DynamicLight.range = Fuel / GoodFuelAmount / 2f * FullRange + RandomVariance;
         DynamicLight.color = Color.Lerp(DynamicLight.color, Fuel < GoodFuelAmount ? TooLowFuelColor : EnoughFuelColor, 10f * Time.deltaTime);
         Flame.Aliveness = Mathf.Log(Mathf.Max(0.01f, TimeToEnd), 10) / 2f;
@@ -64,6 +75,19 @@ public class Campfire : MonoBehaviour {
         }
     }
 
+    private void TickFuel() {
+        OutOfCamp = true;
+        if ((Player.position - transform.position).magnitude < CampRadius) {
+            // Player is inside of the camp, tick fuel at normal rate
+            Fuel -= Time.deltaTime;
+            OutOfCamp = false;
+        } else if (Fuel > OutOfCampFuelThreshold) {
+            // Player is outside of the camp, and the campfire is within safe levels, tick fuel at a slow rate
+            Fuel -= Time.deltaTime * OutOfCampFuelRateMultiplier;
+        }
+        Fuel = Mathf.Max(0, Fuel);
+    }
+
     private bool BurnLog(Item burnable) {
         if (Fuel >= GoodFuelAmount * 2) {
             return false;