use HashCode in CASCKeyComparer

overtools · Nov 10, 2024 · cc8286f · cc8286f
1 parent 0bfd791
commit cc8286f
Showing 1 changed file with 8 additions and 30 deletions.
diff --git a/TACTLib/Core/Key/CASCKeyComparer.cs b/TACTLib/Core/Key/CASCKeyComparer.cs
@@ -3,9 +3,6 @@
 
 namespace TACTLib.Core.Key {
     public class CASCKeyComparer : IEqualityComparer<TruncatedKey>, IEqualityComparer<FullKey> {
-        private const uint FnvPrime32 = 0x1000193;
-        private const uint FnvOffset32 = 0x811C9DC5;
-
         /// <summary>Static instance</summary>
         public static readonly CASCKeyComparer Instance = new CASCKeyComparer();
 
@@ -21,35 +18,16 @@ private static bool Equals(ReadOnlySpan<byte> spanA, ReadOnlySpan<byte> spanB) {
             return spanA.SequenceEqual(spanB);
         }
 
-        public unsafe int GetHashCode(TruncatedKey obj) {
-            var hash = FnvOffset32;
-            var ptr = (uint*) &obj;
-
-            for (var i = 0; i < 2; i++) {
-                hash ^= ptr[i];
-                hash *= FnvPrime32;
-            }
-
-            var hashPtr = (byte*) &hash;
-            var b = *((byte*)ptr + 8);
-            for (var i = 0; i < 4; ++i) {
-                hashPtr[i] ^= b;
-            }
-
-            return unchecked((int) hash);
+        public int GetHashCode(TruncatedKey obj) {
+            var h = new HashCode();
+            h.AddBytes(obj);
+            return h.ToHashCode();
         }
 
-        public unsafe int GetHashCode(FullKey obj) {
-            var hash = FnvOffset32;
-
-            var ptr = (uint*) &obj;
-
-            for (var i = 0; i < 4; i++) {
-                hash ^= ptr[i];
-                hash *= FnvPrime32;
-            }
-
-            return unchecked((int) hash);
+        public int GetHashCode(FullKey obj) {
+            var h = new HashCode();
+            h.AddBytes(obj);
+            return h.ToHashCode();
         }
     }
 }