Initial commit of Command & Conquer Renegade source code.

2025-12-16 07:31:40 -05:00 · 2025-02-27 16:39:46 +00:00
parent 74ab8fa5e0
commit 58ed459113
4918 changed files with 1366710 additions and 0 deletions
--- a/Code/WWMath/ode.h
+++ b/Code/WWMath/ode.h
@@ -0,0 +1,134 @@
+/*
+**	Command & Conquer Renegade(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/>.
+*/
+
+/* $Header: /G/wwmath/ode.h 9     9/21/99 5:54p Neal_k $ */
+/*********************************************************************************************** 
+ ***                            Confidential - Westwood Studios                              *** 
+ *********************************************************************************************** 
+ *                                                                                             * 
+ *                 Project Name : Commando                                                     * 
+ *                                                                                             * 
+ *                     $Archive:: /G/wwmath/ode.h                                             $* 
+ *                                                                                             * 
+ *                       Author:: Greg_h                                                       * 
+ *                                                                                             * 
+ *                     $Modtime:: 9/21/99 5:54p                                               $* 
+ *                                                                                             * 
+ *                    $Revision:: 9                                                           $* 
+ *                                                                                             * 
+ *---------------------------------------------------------------------------------------------* 
+ * Functions:                                                                                  * 
+ * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#ifndef ODE_H
+#define ODE_H
+
+#include "always.h"
+#include "vector.h"
+#include "wwdebug.h"
+
+
+/*
+** StateVectorClass
+** The state vector for a system of ordinary differential equations will be 
+** stored in this form.  It is a dynamically resizeable array so that we don't
+** have to hard-code a maximum size.  If needed, in the final product, we could
+** do a slight optimization which makes this a normal fixed size array that
+** we've determined is "big enough".
+*/
+class StateVectorClass : public DynamicVectorClass<float> 
+{
+public:
+	void Reset(void) { ActiveCount = 0; }
+	void Resize(int size) { if (size > VectorMax) { DynamicVectorClass<float>::Resize(size); } }
+};
+
+
+/*
+** ODESystemClass
+** If a system of Ordinary Differential Equations (ODE's) are put behind an interface
+** of this type, they can be integrated using the Integrators defined in this module.
+*/
+class ODESystemClass
+{
+
+public:
+
+	/*
+	** Get_Current_State
+	** This function should fill the given state vector with the
+	** current state of this object.  Each state variable should be 
+	** inserted into the vector using its 'Add' interface.  
+	*/
+	virtual void	Get_State(StateVectorClass & set_state) = 0;
+
+	/*
+	** Set_Current_State
+	** This function should read its state from this state vector starting from the
+	** given index.  The return value should be the index that the next object should
+	** read from (i.e. increment the index past your state)
+	*/
+	virtual int		Set_State(const StateVectorClass & new_state,int start_index = 0) = 0;
+
+	/*
+	** Compute_Derivatives
+	** The various ODE solvers will use this interface to ask the ODESystemClass to 
+	** compute the derivatives of their state.  In some cases, the integrator will
+	** pass in a new state vector (test_state) to be used when computing the derivatives.  
+	** NULL will be passed if they want the derivatives for the initial state.
+	** This function works similarly to the Set_State function in that it passes you
+	** the index to start reading from and you pass it back the index to continue from.
+	*/
+	virtual int		Compute_Derivatives(float t,StateVectorClass * test_state,StateVectorClass * dydt,int start_index = 0) = 0;
+
+};
+
+
+/*
+** IntegrationSystem
+**
+** The Euler_Solve is the simplest but most inaccurate.  It requires only
+** a single computation of the derivatives per timestep.
+**
+** The Midpoint_Solve function will evaluate the derivatives at two points
+**
+** The Runge_Kutta_Solve requires four evaluations of the derivatives.
+** This is the fourth order Runge-Kutta method...
+**
+** Runge_Kutta5_Solve is an implementation of fifth order Runge-
+** Kutta.  It requires six evaluations of the derivatives.  
+*/
+
+class IntegrationSystem
+{
+public:
+
+	static void Euler_Integrate(ODESystemClass * sys,float dt);
+	static void	Midpoint_Integrate(ODESystemClass * sys,float dt);
+	static void	Runge_Kutta_Integrate(ODESystemClass * sys,float dt);
+	static void Runge_Kutta5_Integrate(ODESystemClass * odesys,float dt);
+
+};
+
+#endif
+