Initial commit of Command & Conquer Generals and Command & Conquer Generals Zero Hour source code.

2025-02-27 17:34:39 +00:00 · 2025-02-27 17:34:39 +00:00 · 3d0ee53a05
commit 3d0ee53a05
parent 2e338c00cb
6072 changed files with 2283311 additions and 0 deletions
--- a/GeneralsMD/Code/GameEngine/Include/Common/crc.h
+++ b/GeneralsMD/Code/GameEngine/Include/Common/crc.h
@ -0,0 +1,127 @@
+/*
+**	Command & Conquer Generals Zero Hour(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**	GNU General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+////////////////////////////////////////////////////////////////////////////////
+//																																						//
+//  (c) 2001-2003 Electronic Arts Inc.																				//
+//																																						//
+////////////////////////////////////////////////////////////////////////////////
+
+// CRC.h ///////////////////////////////////////////////////////////////
+// A class encapsulating CRC calculation
+// Author: Matthew D. Campbell, October 2001
+
+#pragma once
+
+#ifndef _CRC_H_
+#define _CRC_H_
+
+#include "Lib/BaseType.h"
+#include "winsock2.h" // for htonl
+
+#ifdef _DEBUG
+
+class CRC
+{
+public:
+	CRC() { crc = 0; }
+
+	void computeCRC( const void *buf, Int len );		///< Compute the CRC for a buffer, added into current CRC
+	void clear( void ) { crc = 0; }									///< Clears the CRC to 0
+//	UnsignedInt get( void ) { return htonl(crc); }	///< Get the combined CRC
+	UnsignedInt get( void );
+
+private:
+	void addCRC( UnsignedByte val );									///< CRC a 4-byte block
+
+	UnsignedInt crc;
+};
+
+#else
+
+// optimized inline only version
+class CRC
+{
+public:
+	CRC(void) { crc=0; }
+
+  /// Compute the CRC for a buffer, added into current CRC
+	__forceinline void computeCRC( const void *buf, Int len )
+  {
+    if (!buf||len<1)
+      return;
+    
+    /* C++ version left in for reference purposes
+	  for (UnsignedByte *uintPtr=(UnsignedByte *)buf;len>0;len--,uintPtr++)
+    {
+    	int hibit;
+    	if (crc & 0x80000000) 
+      {
+		    hibit = 1;
+	    } 
+      else 
+      {
+		    hibit = 0;
+	    }
+
+	    crc <<= 1;
+	    crc += *uintPtr;
+	    crc += hibit;
+    }
+    */
+
+    // ASM version, verified by comparing resulting data with C++ version data
+    unsigned *crcPtr=&crc;
+    _asm
+    {
+      mov esi,[buf]
+      mov ecx,[len]
+      dec ecx
+      mov edi,[crcPtr]
+      mov ebx,dword ptr [edi]
+      xor eax,eax
+    lp:
+      mov al,byte ptr [esi]
+      shl ebx,1
+      inc esi
+      adc ebx,eax
+      dec ecx
+      jns lp
+      mov dword ptr [edi],ebx
+    };
+  }
+
+  /// Clears the CRC to 0
+	void clear( void ) 
+  { 
+    crc = 0; 
+  }									
+
+  ///< Get the combined CRC
+	UnsignedInt get( void ) const
+  {
+    return crc;
+  }
+
+private:
+	UnsignedInt crc;
+};
+
+#endif
+
+#endif // _CRC_H_