From: Joshua Simmons <josh@nega.tv>
Date: Mon, 29 May 2023 07:04:39 +0000 (+0200)
Subject: core: Fix wrapping assert when seeding Pcg64
X-Git-Url: https://git.nega.tv//gitweb.cgi?a=commitdiff_plain;h=390f63d8249bcb0725ec98edea703d8d799dc648;p=josh%2Fnarcissus

core: Fix wrapping assert when seeding Pcg64
---

diff --git a/libs/narcissus-core/src/rand.rs b/libs/narcissus-core/src/rand.rs
index 1a01910..a8e2b42 100644
--- a/libs/narcissus-core/src/rand.rs
+++ b/libs/narcissus-core/src/rand.rs
@@ -15,7 +15,7 @@ impl Pcg64 {
     pub fn with_seed(seed: u128) -> Self {
         let mut rng = Self { state: 0 };
         let _ = rng.next_u64();
-        rng.state += seed;
+        rng.state = rng.state.wrapping_add(seed);
         let _ = rng.next_u64();
         rng
     }