Slot: 一定確率で直前と同じ出目が出るようにする

2RiniaR · Nov 23, 2024 · 8120b32 · 8120b32
1 parent a7f48af
commit 8120b32
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Showing 3 changed files with 29 additions and 3 deletions.
diff --git a/Common/Master/SlotItemMaster.cs b/Common/Master/SlotItemMaster.cs
@@ -17,4 +17,7 @@ public class SlotItem : MasterRecord<string>
 
     [field: MasterIntValue("return_rate_permillage")]
     public int ReturnRatePermillage { get; }
+
+    [field: MasterIntValue("repeat_permillage")]
+    public int RepeatPermillage { get; }
 }
diff --git a/Common/NumberUtility.cs b/Common/NumberUtility.cs
@@ -22,6 +22,11 @@ public static TimeSpan GetTimeSpanFromMilliseconds(float milliseconds)
         return TimeSpan.FromMilliseconds(milliseconds);
     }
 
+    public static float GetProbabilityFromPermillage(int permillage)
+    {
+        return permillage / 100000f;
+    }
+
     public static float GetPercentFromPermillage(int permillage)
     {
         return permillage / 1000f;

diff --git a/Common/SlotManager.cs b/Common/SlotManager.cs
@@ -15,9 +15,27 @@ public void LoadMaster()
     public SlotExecuteResult Execute()
     {
         var itemCount = _items.Count;
-        var reelItems = EnumerableUtility
-            .Repeat(() => _items[RandomUtility.GetRandomInt(itemCount)], ReelCount)
-            .ToArray();
+
+        var reelItems = new SlotItem[ReelCount];
+        for (var i = 0; i < ReelCount; i++)
+        {
+            if (i == 0)
+            {
+                reelItems[i] = _items[RandomUtility.GetRandomInt(itemCount)];
+                continue;
+            }
+
+            // 一定確率で直前と同じ出目が出る
+            var repeatProbability = NumberUtility.GetProbabilityFromPermillage(reelItems[i - 1].RepeatPermillage);
+            var isRepeat = RandomUtility.IsHit(repeatProbability);
+            if (isRepeat)
+            {
+                reelItems[i] = reelItems[i - 1];
+                continue;
+            }
+
+            reelItems[i] = _items[RandomUtility.GetRandomInt(itemCount)];
+        }
 
         var isWin = reelItems.Select(x => x.Id).Distinct().Count() == 1;
         var resultRatePermillage = isWin ? reelItems[0].ReturnRatePermillage : 0;