Initialized everything and completed Bucket.cs, Fire.cs, Well.cs.

BucketChain/Fire.cs

@@ -5,7 +5,7 @@
 /// </summary>
 public sealed class Fire
 {
-    // TODO
+    private readonly double _growRate;
 
     /// <summary>
     ///     Creates a new fire with the passed properties.
@@ -14,19 +14,19 @@ public sealed class Fire
     /// <param name="growRate">Rate by which the fire grows with each (chain operation) step</param>
     public Fire(double initialFireSize, double growRate)
     {
-        // TODO
+        _growRate = growRate;
+        FireSize = initialFireSize;
     }
 
     /// <summary>
     ///     Gets the current size of the fire; cannot be smaller than 0.
     /// </summary>
-    // TODO
-    // public double FireSize ...
+    public double FireSize { get; private set; }
 
     /// <summary>
     ///     Gets if the fire has been extinguished (= size is 0).
     /// </summary>
-    public bool Extinguished => false; // TODO
+    public bool Extinguished => FireSize <= 0D;
 
     /// <summary>
     ///     The fire is hit by a load of water from a bucket.
@@ -35,7 +35,7 @@ public sealed class Fire
     /// <param name="amount">Liters of water</param>
     public void GetHitByWater(double amount)
     {
-        // TODO
+        FireSize = FireSize - amount < 0D ? 0D : FireSize - amount;
     }
 
     /// <summary>
@@ -44,7 +44,7 @@ public sealed class Fire
     /// </summary>
     public void BurnHigher()
     {
-        // TODO
+        FireSize += _growRate;
     }
 
     /// <summary>
@@ -52,5 +52,5 @@ public sealed class Fire
     ///     The size is rounded to whole numbers.
     /// </summary>
     /// <returns>String representation of the fire</returns>
-    public override string ToString() => string.Empty; // TODO
+    public override string ToString() => $"🔥 {Math.Round(FireSize)}";
 }