From 35934baec0e5644039ab58e2b260a1279462adbb Mon Sep 17 00:00:00 2001
From: cosmonaut <evan@moonside.games>
Date: Fri, 13 Oct 2023 12:29:38 -0700
Subject: [PATCH] fix random sometimes returning negative integers

---
 src/Random.cs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/Random.cs b/src/Random.cs
index a6fb7b7..385bfb2 100644
--- a/src/Random.cs
+++ b/src/Random.cs
@@ -112,7 +112,7 @@ namespace MoonTools.ECS
 		// .NET Random API always returns a non-negative signed int. Fun!
 		public int Next()
 		{
-			return (int) (NextInternal() >> 1); // bitshift right to get rid of signed bit
+			return (int) (NextInternal() >>> 1); // unsigned bitshift right to get rid of signed bit
 		}
 
 		public int Next(int n)
@@ -130,8 +130,9 @@ namespace MoonTools.ECS
 		public long NextInt64()
 		{
 			long next = NextInternal();
-			next <<= 31;
+			next <<= 32;
 			next |= NextInternal();
+			next >>>= 1;
 			return next;
 		}
 
@@ -148,6 +149,12 @@ namespace MoonTools.ECS
 			return min + next;
 		}
 
+		public float NextFloat()
+		{
+			var n = NextInternal();
+			return ((float) n) / uint.MaxValue;
+		}
+
 		public double NextDouble()
 		{
 			var n = NextInternal();