feat: Simulation math CRC utility for mismatch prevention

Core/GameEngine/CMakeLists.txt

@@ -118,6 +118,7 @@ set(GAMEENGINE_SRC
 #    Include/Common/StatsCollector.h
     Include/Common/STLTypedefs.h
     Include/Common/StreamingArchiveFile.h
+    Include/Common/SimulationMathCrc.h
     Include/Common/SubsystemInterface.h
 #    Include/Common/SystemInfo.h
 #    Include/Common/Team.h
@@ -582,6 +583,7 @@ set(GAMEENGINE_SRC
 #    Source/Common/GameMain.cpp
     Source/Common/GameUtility.cpp
 #    Source/Common/GlobalData.cpp
+    Source/Common/SimulationMathCrc.cpp
     Source/Common/INI/INI.cpp
 #    Source/Common/INI/INIAiData.cpp
 #    Source/Common/INI/INIAnimation.cpp

Core/GameEngine/Include/Common/SimulationMathCrc.h

@@ -0,0 +1,27 @@
+/*
+**	Command & Conquer Generals Zero Hour(tm)
+**	Copyright 2026 TheSuperHackers
+**
+**	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/>.
+*/
+
+#pragma once
+
+#include "Lib/BaseType.h"
+
+class SimulationMathCrc
+{
+public:
+	static UnsignedInt calculate();
+};

Core/GameEngine/Source/Common/SimulationMathCrc.cpp

@@ -0,0 +1,74 @@
+/*
+**	Command & Conquer Generals Zero Hour(tm)
+**	Copyright 2026 TheSuperHackers
+**
+**	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/>.
+*/
+
+#include "PreRTS.h"
+
+#include "Common/SimulationMathCrc.h"
+#include "Common/XferCRC.h"
+#include "WWMath/matrix3d.h"
+#include "WWMath/wwmath.h"
+
+#include <math.h>
+
+static void appendMatrixCrc(XferCRC &xfer)
+{
+    Matrix3D matrix;
+    Matrix3D factors_matrix;
+
+    matrix.Set(
+        4.1f, 1.2f, 0.3f, 0.4f,
+        0.5f, 3.6f, 0.7f, 0.8f,
+        0.9f, 1.0f, 2.1f, 1.2f);
+
+    factors_matrix.Set(
+        WWMath::Sin(0.7f) * log10f(2.3f),
+        WWMath::Cos(1.1f) * powf(1.1f, 2.0f),
+        tanf(0.3f),
+        asinf(0.9673022627830505),
+        acosf(0.9673022627830505),
+        atanf(0.9673022627830505) * powf(1.1f, 2.0f),
+        atan2f(0.4f, 1.3f),
+        sinhf(0.2f),
+        coshf(0.4f) * tanhf(0.5f),
+        sqrtf(55788.84375),
+        expf(0.1f) * log10f(2.3f),
+        logf(1.4f));
+
+    Matrix3D::Multiply(matrix, factors_matrix, &matrix);
+    matrix.Get_Inverse(matrix);
+
+    xfer.xferMatrix3D(&matrix);
+}
+
+UnsignedInt SimulationMathCrc::calculate()
+{
+    XferCRC xfer;
+    xfer.open("SimulationMathCrc");
+
+    _fpreset();
+    // TheSuperHackers @info stephanmeesters 29/01/2026 Use the same rounding mode as used in the game. This affects vc6 only.
+    _controlfp(0x000A001F, _MCW_RC | _MCW_PC | _MCW_EM);
+
+    appendMatrixCrc(xfer);
+
+    _fpreset();
+
+    xfer.close();
+
+    return xfer.getCRC();
+}