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115 lines
4 KiB
C++
115 lines
4 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition Source Code 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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Doom 3 BFG Edition Source Code 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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You should have received a copy of the GNU General Public License
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along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __ARRAY_H__
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#define __ARRAY_H__
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/*
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================================================
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idArray is a replacement for a normal C array.
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int myArray[ARRAY_SIZE];
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becomes:
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idArray<int,ARRAY_SIZE> myArray;
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Has no performance overhead in release builds, but
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does index range checking in debug builds.
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Unlike idTempArray, the memory is allocated inline with the
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object, rather than on the heap.
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Unlike idStaticList, there are no fields other than the
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actual raw data, and the size is fixed.
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================================================
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*/
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template<class T_, int numElements > class idArray {
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public:
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// returns number of elements in list
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int Num() const { return numElements; }
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// returns the number of bytes the array takes up
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int ByteSize() const { return sizeof( ptr ); }
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// memset the entire array to zero
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void Zero() { memset( ptr, 0, sizeof( ptr ) ); }
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// memset the entire array to a specific value
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void Memset( const char fill ) { memset( ptr, fill, numElements * sizeof( *ptr ) ); }
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// array operators
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const T_ & operator[]( int index ) const { assert( (unsigned)index < (unsigned)numElements ); return ptr[index]; }
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T_ & operator[]( int index ) { assert( (unsigned)index < (unsigned)numElements ); return ptr[index]; }
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// returns a pointer to the list
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const T_ * Ptr() const { return ptr; }
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T_ * Ptr() { return ptr; }
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private:
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T_ ptr[numElements];
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};
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#define ARRAY_COUNT( arrayName ) ( sizeof( arrayName )/sizeof( arrayName[0] ) )
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#define ARRAY_DEF( arrayName ) arrayName, ARRAY_COUNT( arrayName )
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/*
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================================================
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id2DArray is essentially a typedef (as close as we can
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get for templates before C++11 anyway) to make
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declaring two-dimensional idArrays easier.
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Usage:
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id2DArray< int, 5, 10 >::type someArray;
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================================================
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*/
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template<class _type_, int _dim1_, int _dim2_ >
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struct id2DArray {
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typedef idArray< idArray< _type_, _dim2_ >, _dim1_ > type;
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};
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/*
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================================================
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idTupleSize
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Generic way to get the size of a tuple-like type.
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Add specializations as needed.
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This is modeled after std::tuple_size from C++11,
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which works for std::arrays also.
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================================================
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*/
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template< class _type_ >
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struct idTupleSize;
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template< class _type_, int _num_ >
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struct idTupleSize< idArray< _type_, _num_ > > {
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enum { value = _num_ };
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};
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#endif // !__ARRAY_H__
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