Added dynamic spawning and despawning of objects

scripts/Vector3Dec.cs

@@ -1,7 +1,7 @@
 using System;
 using Godot;
 
-public class Vector3Dec(decimal x, decimal y, decimal z)
+public readonly struct Vector3Dec(decimal x, decimal y, decimal z)
 {
 	public static Vector3Dec Zero { get; } = new(0, 0, 0);
 
@@ -14,6 +14,11 @@ public class Vector3Dec(decimal x, decimal y, decimal z)
 		return new((double)X, (double)Y, (double)Z);
 	}
 
+	public static Vector3Dec FromVector3(Vector3 vec)
+	{
+		return new((decimal)vec.X, (decimal)vec.Y, (decimal)vec.Z);
+	}
+
 	public static Vector3Dec operator +(Vector3Dec vec1, Vector3Dec vec2)
 	{
 		return new(vec1.X + vec2.X, vec1.Y + vec2.Y, vec1.Z + vec2.Z);