From a5c335bf8fe5946d20cb0e59b6ed61269f7a218f Mon Sep 17 00:00:00 2001
From: xLinka <Oliver.dunnington@outlook.com>
Date: Tue, 25 Jun 2024 13:33:25 +0100
Subject: [PATCH] Create Factorial Node Reference #1688

https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/1688

Adding factorial node as a basis for ticket 1688 on main github
---
 ProjectObsidian/ProtoFlux/Math/Factorial.cs | 24 +++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 ProjectObsidian/ProtoFlux/Math/Factorial.cs

diff --git a/ProjectObsidian/ProtoFlux/Math/Factorial.cs b/ProjectObsidian/ProtoFlux/Math/Factorial.cs
new file mode 100644
index 0000000..158cc8d
--- /dev/null
+++ b/ProjectObsidian/ProtoFlux/Math/Factorial.cs
@@ -0,0 +1,24 @@
+using System;
+using Elements.Core;
+using ProtoFlux.Core;
+using ProtoFlux.Runtimes.Execution;
+using FrooxEngine.ProtoFlux;
+
+namespace ProtoFlux.Runtimes.Execution.Nodes.Obsidian.Math
+{
+    [NodeCategory("Obsidian/Math")]
+    [NodeName("Factorial")]
+    public class FactorialNode : ValueFunctionNode<FrooxEngineContext, int>
+    {
+        public ValueInput<int> Input;
+
+        protected override int Compute(FrooxEngineContext context)
+        {
+            var input = Input.Evaluate(context);
+            var fact = 1;
+            var loop = MathX.Clamp(input, 0, 16);
+            for (var i = 1; i <= loop; i++) fact *= i;
+            return fact;
+        }
+    }
+}