Daily update 2 on 20240228 by nitload youmu

2025-03-01 04:58:46 +08:00
parent 90d5f76511
commit f22862dfc4
983 changed files with 180004 additions and 0 deletions
@@ -0,0 +1,169 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="RandomGenerator.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.HighPerformance;
+
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+using System.Xml.Serialization;
+
+namespace StgSharp.Data
+{
+    public class RandomGenerator
+    {
+
+        private byte[] currentKey;
+
+        private readonly byte[] originKey;
+        private int cycleCount;
+        private SHA512 hash;
+
+        public RandomGenerator() : this( DateTime.UtcNow.ToBinary() ) { }
+
+        public RandomGenerator( object source )
+        {
+            try {
+                if( source == null ) {
+                    throw new ArgumentNullException( nameof( source ) );
+                }
+                XmlSerializer s = new XmlSerializer( source.GetType() );
+                using( StringWriter sw = new StringWriter() ) {
+                    s.Serialize( sw, source );
+                    string data = sw.ToString();
+                    originKey = Encoding.UTF8.GetBytes( data );
+                }
+            }
+            catch( Exception ) {
+                throw;
+            }
+            hash = SHA512.Create();
+            originKey = hash.ComputeHash( originKey );
+            currentKey = originKey;
+            cycleCount = 0;
+        }
+
+        public int TotalGeneratedRandom
+        {
+            get => cycleCount;
+        }
+
+        public unsafe int GenRandomInt()
+        {
+            M128 source = PrivateRand();
+            cycleCount++;
+
+            /*
+            float d0 =  MathF.Sin(1 / source.Read<float>(0));
+            float d1 =  MathF.Sin(1 / source.Read<float>(1));
+            float d2 =  MathF.Sin(1 / source.Read<float>(2));
+            float d3 =  MathF.Sin(1 / source.Read<float>(3));
+
+            source.Write<short>(0, *( short*)&d3);
+            source.Write<short>(2, *((short*)&d2+1));
+            source.Write<short>(4, *( short*)&d1);
+            source.Write<short>(6, *((short*)&d0+1));
+
+            /**/
+
+            return source.Read<int>( cycleCount % 4 );
+        }
+
+        public byte GenRandomInt8()
+        {
+            cycleCount++;
+            if( cycleCount % 64 == 0 ) {
+                PrivateRand();
+            }
+            return currentKey[ cycleCount % 64 ];
+        }
+
+        public float GenRandomSingle()
+        {
+            cycleCount++;
+
+            while( true ) {
+                M128 source = PrivateRand();
+
+                uint
+                    temp0 = source.Read<uint>( 0 ),
+                    temp1 = source.Read<uint>( 2 );
+
+                if( temp0 * temp1 != 0 ) {
+                    float ret = ( ( temp0 % temp1 ) * 1.0f ) / temp1;
+                    if( ret < 0.335f ) {
+                        ret = ret * ( ( ret * ( -0.7811934f ) ) + 1.4489113f );
+                    } else {
+                        ret = ( ret * ( ( ret * ( -0.1158368f ) ) + 1.0580600f ) ) + 0.0590584f;
+                    }
+                    if( ret > 1 ) {
+                        continue;
+                    }
+                    return ret;
+                }
+            }
+        }
+
+        public void Reset()
+        {
+            currentKey = originKey;
+            cycleCount = 0;
+        }
+
+        private unsafe M128 PrivateRand()
+        {
+            currentKey = hash.ComputeHash( currentKey );
+            M128 ret;
+            fixed( byte* bptr = currentKey ) {
+                switch( ( cycleCount % 16 ) / 4 ) {
+                    case 0:
+                        ret = *( ( ( M128* )bptr ) + 0 );
+                        break;
+                    case 1:
+                        ret = *( ( ( M128* )bptr ) + 1 );
+                        break;
+                    case 2:
+                        ret = *( ( ( M128* )bptr ) + 2 );
+                        break;
+                    case 3:
+                        ret = *( ( ( M128* )bptr ) + 3 );
+                        break;
+                    default:
+                        throw new InvalidOperationException();
+                }
+            }
+
+            //Console.WriteLine(ret.ToString(16));
+            return ret;
+        }
+
+    }
+}