Add NonTile Mode Prototype

Util/ParticleUtil.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace ADOFAIRenderer.Util
+{
+    public static class ParticleUtil
+    {
+        private static readonly ConditionalWeakTable<ParticleSystem, ParticleSystemRenderer> Cache = new();
+
+        public static ParticleSystemRenderer? GetRenderer(this ParticleSystem ps)
+        {
+            if (!ps) return null;
+            if (Cache.TryGetValue(ps, out var renderer) && renderer) return renderer;
+
+            var particleSystems = ps.GetComponents<ParticleSystem>();
+            var renderers = ps.GetComponents<ParticleSystemRenderer>();
+            var index = Array.IndexOf(particleSystems, ps);
+
+            renderer = index >= 0 && index < renderers.Length ? renderers[index] : ps.GetComponent<ParticleSystemRenderer>();
+            if (renderer) Cache.Add(ps, renderer);
+
+            return renderer;
+        }
+    }
+}