676 lines
38 KiB
C++
676 lines
38 KiB
C++
/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* $Header: /CounterStrike/VECTOR.CPP 1 3/03/97 10:26a Joe_bostic $ */
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : VECTOR.CPP *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : 02/19/95 *
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* *
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* Last Update : September 21, 1995 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* BooleanVectorClass::BooleanVectorClass -- Copy constructor for boolean array. *
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* BooleanVectorClass::BooleanVectorClass -- Explicit data buffer constructor. *
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* BooleanVectorClass::Clear -- Resets boolean vector to empty state. *
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* BooleanVectorClass::Fixup -- Updates the boolean vector to a known state. *
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* BooleanVectorClass::Reset -- Clear all boolean values in array. *
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* BooleanVectorClass::Resize -- Resizes a boolean vector object. *
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* BooleanVectorClass::Set -- Forces all boolean elements to true. *
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* BooleanVectorClass::operator = -- Assignment operator. *
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* BooleanVectorClass::operator == -- Comparison operator for boolean vector. *
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* VectorClass<T>::Clear -- Frees and clears the vector. *
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* VectorClass<T>::ID -- Finds object ID based on value. *
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* VectorClass<T>::ID -- Pointer based conversion to index number. *
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* VectorClass<T>::Resize -- Changes the size of the vector. *
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* VectorClass<T>::VectorClass -- Constructor for vector class. *
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* VectorClass<T>::VectorClass -- Copy constructor for vector object. *
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* VectorClass<T>::operator = -- The assignment operator. *
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* VectorClass<T>::operator == -- Equality operator for vector objects. *
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* VectorClass<T>::~VectorClass -- Default destructor for vector class. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include "function.h"
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#ifdef WINSOCK_IPX
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#include "WSProto.h"
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#include "WSPUDP.h"
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#endif //WINSOCK_IPX
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#include "vector.h"
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#include <mem.h>
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#include <stdio.h>
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/*
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** The following template function can be located here ONLY if all the instantiations are
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** declared in a header file this module includes. By placing the template functions here,
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** it speeds up compiler operation and reduces object module size.
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*/
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/***********************************************************************************************
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* VectorClass<T>::VectorClass -- Constructor for vector class. *
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* *
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* This constructor for the vector class is passed the initial size of the vector and an *
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* optional pointer to a preallocated block of memory that the vector will be placed in. *
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* If this optional pointer is NULL (or not provided), then the vector is allocated out *
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* of free store (with the "new" operator). *
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* *
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* INPUT: size -- The number of elements to initialize this vector to. *
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* *
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* array -- Optional pointer to a previously allocated memory block to hold the *
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* vector. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::VectorClass(unsigned size, T const * array) :
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Vector(0),
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VectorMax(size),
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IsAllocated(false)
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{
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/*
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** Allocate the vector. The default constructor will be called for every
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** object in this vector.
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*/
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if (size) {
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if (array) {
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Vector = new((void*)array) T[size];
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} else {
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Vector = new T[size];
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IsAllocated = true;
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}
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}
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}
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/***********************************************************************************************
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* VectorClass<T>::~VectorClass -- Default destructor for vector class. *
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* *
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* This is the default destructor for the vector class. It will deallocate any memory *
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* that it may have allocated. *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::~VectorClass(void)
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{
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VectorClass<T>::Clear();
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}
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/***********************************************************************************************
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* VectorClass<T>::VectorClass -- Copy constructor for vector object. *
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* *
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* This is the copy constructor for the vector class. It will duplicate the provided *
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* vector into the new vector being created. *
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* *
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* INPUT: vector -- Reference to the vector to use as a copy. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T>::VectorClass(VectorClass<T> const & vector) :
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Vector(0),
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VectorMax(0),
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IsAllocated(false)
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{
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*this = vector;
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}
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/***********************************************************************************************
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* VectorClass<T>::operator = -- The assignment operator. *
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* *
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* This the the assignment operator for vector objects. It will alter the existing lvalue *
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* vector to duplicate the rvalue one. *
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* *
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* INPUT: vector -- The rvalue vector to copy into the lvalue one. *
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* *
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* OUTPUT: Returns with reference to the newly copied vector. *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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VectorClass<T> & VectorClass<T>::operator =(VectorClass<T> const & vector)
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{
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if (this != &vector) {
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Clear();
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VectorMax = vector.Length();
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if (VectorMax) {
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Vector = new T[VectorMax];
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if (Vector) {
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IsAllocated = true;
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for (int index = 0; index < VectorMax; index++) {
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Vector[index] = vector[index];
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}
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}
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} else {
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Vector = 0;
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IsAllocated = false;
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}
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}
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return(*this);
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}
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/***********************************************************************************************
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* VectorClass<T>::operator == -- Equality operator for vector objects. *
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* *
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* This operator compares two vectors for equality. It does this by performing an object *
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* by object comparison between the two vectors. *
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* *
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* INPUT: vector -- The right vector expression. *
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* *
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* OUTPUT: bool; Are the two vectors essentially equal? (do they contain comparable elements *
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* in the same order?) *
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* *
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* WARNINGS: The equality operator must exist for the objects that this vector contains. *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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int VectorClass<T>::operator == (VectorClass<T> const & vector) const
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{
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if (VectorMax == vector.Length()) {
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for (int index = 0; index < VectorMax; index++) {
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if (Vector[index] != vector[index]) {
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return(false);
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}
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}
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return(true);
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}
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return(false);
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}
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/***********************************************************************************************
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* VectorClass<T>::ID -- Pointer based conversion to index number. *
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* *
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* Use this routine to convert a pointer to an element in the vector back into the index *
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* number of that object. This routine ONLY works with actual pointers to object within *
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* the vector. For "equivalent" object index number (such as with similar integral values) *
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* then use the "by value" index number ID function. *
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* *
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* INPUT: pointer -- Pointer to an actual object in the vector. *
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* *
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* OUTPUT: Returns with the index number for the object pointed to by the parameter. *
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* *
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* WARNINGS: This routine is only valid for actual pointers to object that exist within *
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* the vector. All other object pointers will yield undefined results. *
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* *
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* HISTORY: *
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* 03/13/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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inline int VectorClass<T>::ID(T const * ptr)
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{
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return(((unsigned long)ptr - (unsigned long)&(*this)[0]) / sizeof(T));
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}
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/***********************************************************************************************
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* VectorClass<T>::ID -- Finds object ID based on value. *
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* *
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* Use this routine to find the index value of an object with equivalent value in the *
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* vector. Typical use of this would be for integral types. *
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* *
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* INPUT: object -- Reference to the object that is to be looked up in the vector. *
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* *
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* OUTPUT: Returns with the index number of the object that is equivalent to the one *
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* specified. If no matching value could be found then -1 is returned. *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/13/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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int VectorClass<T>::ID(T const & object)
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{
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for (int index = 0; index < VectorMax; index++) {
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if ((*this)[index] == object) {
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return(index);
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}
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}
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return(-1);
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}
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/***********************************************************************************************
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* VectorClass<T>::Clear -- Frees and clears the vector. *
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* *
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* Use this routine to reset the vector to an empty (non-allocated) state. A vector will *
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* free all allocated memory when this routine is called. In order for the vector to be *
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* useful after this point, the Resize function must be called to give it element space. *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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void VectorClass<T>::Clear(void)
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{
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if (Vector && IsAllocated) {
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delete[] Vector;
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Vector = 0;
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}
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IsAllocated = false;
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VectorMax = 0;
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}
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/***********************************************************************************************
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* VectorClass<T>::Resize -- Changes the size of the vector. *
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* *
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* This routine is used to change the size (usually to increase) the size of a vector. This *
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* is the only way to increase the vector's working room (number of elements). *
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* *
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* INPUT: newsize -- The desired size of the vector. *
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* *
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* array -- Optional pointer to a previously allocated memory block that the *
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* array will be located in. If this parameter is not supplied, then *
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* the array will be allocated from free store. *
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* *
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* OUTPUT: bool; Was the array resized successfully? *
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* *
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* WARNINGS: Failure to succeed could be the result of running out of memory. *
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* *
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* HISTORY: *
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* 03/10/1995 JLB : Created. *
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*=============================================================================================*/
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template<class T>
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int VectorClass<T>::Resize(unsigned newsize, T const * array)
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{
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if (newsize) {
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/*
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** Allocate a new vector of the size specified. The default constructor
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** will be called for every object in this vector.
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*/
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T * newptr;
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if (!array) {
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newptr = new T[newsize];
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} else {
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newptr = new((void*)array) T[newsize];
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}
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if (!newptr) {
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return(false);
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}
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/*
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** If there is an old vector, then it must be copied (as much as is feasible)
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** to the new vector.
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*/
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if (Vector) {
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/*
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** Copy as much of the old vector into the new vector as possible. This
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** presumes that there is a functional assignment operator for each
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** of the objects in the vector.
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*/
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int copycount = (newsize < VectorMax) ? newsize : VectorMax;
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for (int index = 0; index < copycount; index++) {
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newptr[index] = Vector[index];
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}
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/*
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** Delete the old vector. This might cause the destructors to be called
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** for all of the old elements. This makes the implementation of suitable
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** assignment operator very important. The default assignment operator will
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** only work for the simplest of objects.
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*/
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if (IsAllocated) {
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delete[] Vector;
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Vector = 0;
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}
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}
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/*
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** Assign the new vector data to this class.
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*/
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Vector = newptr;
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VectorMax = newsize;
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IsAllocated = (Vector && !array);
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} else {
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/*
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** Resizing to zero is the same as clearing the vector.
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*/
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Clear();
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}
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return(true);
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}
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//----------------------------------------------------------------------------------------------
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/***********************************************************************************************
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* BooleanVectorClass::BooleanVectorClass -- Explicit data buffer constructor. *
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* *
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* This is the constructor for a boolean array. This constructor takes the memory pointer *
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* provided as assigns that as the array data pointer. *
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* *
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* INPUT: size -- The size of the array (in bits). *
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* *
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* array -- Pointer to the memory that the array is to use. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: You must make sure that the memory specified is large enough to contain the *
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* bits specified. *
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* *
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* HISTORY: *
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* 07/18/1995 JLB : Created. *
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*=============================================================================================*/
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BooleanVectorClass::BooleanVectorClass(unsigned size, unsigned char * array)
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{
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BitArray.Resize(((size + (8-1)) / 8), array);
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LastIndex = -1;
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BitCount = size;
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}
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/***********************************************************************************************
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* BooleanVectorClass::BooleanVectorClass -- Copy constructor of boolean array. *
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* *
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* This is the copy constructor for a boolean array. It is used to make a duplicate of the *
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* boolean array. *
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* *
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* INPUT: vector -- Reference to the vector to be duplicated. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 07/18/1995 JLB : Created. *
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*=============================================================================================*/
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BooleanVectorClass::BooleanVectorClass(BooleanVectorClass const & vector)
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{
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LastIndex = -1;
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*this = vector;
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}
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/***********************************************************************************************
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* BooleanVectorClass::operator = -- Assignment operator. *
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* *
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* This routine will make a copy of the specified boolean vector array. The vector is *
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* copied into an already constructed existing vector. The values from the existing vector *
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* are destroyed by this copy. *
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* *
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* INPUT: vector -- Reference to the vector to make a copy of. *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 07/18/1995 JLB : Created. *
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*=============================================================================================*/
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BooleanVectorClass & BooleanVectorClass::operator =(BooleanVectorClass const & vector)
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{
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Fixup();
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Copy = vector.Copy;
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LastIndex = vector.LastIndex;
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BitArray = vector.BitArray;
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BitCount = vector.BitCount;
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return(*this);
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}
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/***********************************************************************************************
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* BooleanVectorClass::operator == -- Comparison operator for boolean vector. *
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* *
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* This is the comparison operator for a boolean vector class. Boolean vectors are equal *
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* if the bit count and bit values are identical. *
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* *
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* INPUT: vector -- Reference to the vector to compare to. *
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* *
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* OUTPUT: Are the boolean vectors identical? *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 07/18/1995 JLB : Created. *
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*=============================================================================================*/
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int BooleanVectorClass::operator == (const BooleanVectorClass & vector)
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{
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Fixup(LastIndex);
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return(BitCount == vector.BitCount && BitArray == vector.BitArray);
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}
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/***********************************************************************************************
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* BooleanVectorClass::Resize -- Resizes a boolean vector object. *
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* *
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* This routine will resize the boolean vector object. An index value used with a boolean *
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* vector must be less than the value specified in as the new size. *
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* *
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* INPUT: size -- The new maximum size of this boolean vector. *
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* *
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* OUTPUT: Was the boolean vector sized successfully? *
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* *
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* WARNINGS: The boolean array might be reallocated or even deleted by this routine. *
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* *
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* HISTORY: *
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* 07/18/1995 JLB : Created. *
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*=============================================================================================*/
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int BooleanVectorClass::Resize(unsigned size)
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{
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Fixup();
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if (size) {
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/*
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** Record the previous bit count of the boolean vector. This is used
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** to determine if the array has grown in size and thus clearing is
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** necessary.
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*/
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int oldsize = BitCount;
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/*
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** Actually resize the bit array. Since this is a bit packed array,
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** there are 8 elements per byte (rounded up).
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*/
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int success = BitArray.Resize(((size + (8-1)) / 8));
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/*
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** Since there is no default constructor for bit packed integers, a manual
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** clearing of the bits is required.
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*/
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BitCount = size;
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if (success && oldsize < size) {
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for (int index = oldsize; index < size; index++) {
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(*this)[index] = 0;
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}
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}
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return(success);
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}
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/*
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** Resizing to zero is the same as clearing and deallocating the array.
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** This is always successful.
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*/
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Clear();
|
|
return(true);
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* BooleanVectorClass::Clear -- Resets boolean vector to empty state. *
|
|
* *
|
|
* This routine will clear out the boolean array. This will free any allocated memory and *
|
|
* result in the boolean vector being unusable until the Resize function is subsequently *
|
|
* called. *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: The boolean vector cannot be used until it is resized to a non null condition. *
|
|
* *
|
|
* HISTORY: *
|
|
* 07/18/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
void BooleanVectorClass::Clear(void)
|
|
{
|
|
Fixup();
|
|
BitCount = 0;
|
|
BitArray.Clear();
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* BooleanVectorClass::Reset -- Clear all boolean values in array. *
|
|
* *
|
|
* This is the preferred (and quick) method to clear the boolean array to a false condition.*
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 07/18/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
void BooleanVectorClass::Reset(void)
|
|
{
|
|
LastIndex = -1;
|
|
if (BitArray.Length()) {
|
|
memset(&BitArray[0], '\0', BitArray.Length());
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* BooleanVectorClass::Set -- Forces all boolean elements to true. *
|
|
* *
|
|
* This is the preferred (and fast) way to set all boolean elements to true. *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 07/18/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
void BooleanVectorClass::Set(void)
|
|
{
|
|
LastIndex = -1;
|
|
if (BitArray.Length()) {
|
|
memset(&BitArray[0], '\xFF', BitArray.Length());
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************************************
|
|
* BooleanVectorClass::Fixup -- Updates the boolean vector to a known state. *
|
|
* *
|
|
* Use this routine to set the boolean value copy to match the appropriate bit in the *
|
|
* boolean array. The boolean array will be updated with any changes from the last time *
|
|
* a value was fetched from the boolean vector. By using this update method, the boolean *
|
|
* array can be treated as a normal array even though the elements are composed of *
|
|
* otherwise inaccessible bits. *
|
|
* *
|
|
* INPUT: index -- The index to set the new copy value to. If the index is -1, then the *
|
|
* previous value will be updated into the vector array, but no new value *
|
|
* will be fetched from it. *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* WARNINGS: Always call this routine with "-1" if any direct manipulation of the bit *
|
|
* array is to occur. This ensures that the bit array is accurate. *
|
|
* *
|
|
* HISTORY: *
|
|
* 07/18/1995 JLB : Created. *
|
|
*=============================================================================================*/
|
|
void BooleanVectorClass::Fixup(int index) const
|
|
{
|
|
/*
|
|
** If the requested index value is illegal, then force the index
|
|
** to be -1. This is the default non-index value.
|
|
*/
|
|
if ((unsigned)index >= BitCount) {
|
|
index = -1;
|
|
}
|
|
|
|
/*
|
|
** If the new index is different than the previous index, there might
|
|
** be some fixing up required.
|
|
*/
|
|
if (index != LastIndex) {
|
|
|
|
/*
|
|
** If the previously fetched boolean value was changed, then update
|
|
** the boolean array accordingly.
|
|
*/
|
|
if (LastIndex != -1) {
|
|
Set_Bit((void*)&BitArray[0], LastIndex, Copy);
|
|
}
|
|
|
|
/*
|
|
** If this new current index is valid, then fill in the reference boolean
|
|
** value with the appropriate data from the bit array.
|
|
*/
|
|
if (index != -1) {
|
|
((unsigned char&)Copy) = Get_Bit(&BitArray[0], index);
|
|
}
|
|
|
|
((int &)LastIndex) = index;
|
|
}
|
|
}
|
|
|
|
|