mirror of
https://github.com/tribes2/engine.git
synced 2026-01-20 03:34:48 +00:00
156 lines
2.8 KiB
C++
156 lines
2.8 KiB
C++
//-----------------------------------------------------------------------------
|
|
// V12 Engine
|
|
//
|
|
// Copyright (c) 2001 GarageGames.Com
|
|
// Portions Copyright (c) 2001 by Sierra Online, Inc.
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#ifndef _BITVECTOR_H_
|
|
#define _BITVECTOR_H_
|
|
|
|
//Includes
|
|
#ifndef _PLATFORM_H_
|
|
#include "Platform/platform.h"
|
|
#endif
|
|
|
|
class BitVector
|
|
{
|
|
U8* mBits;
|
|
U32 mByteSize;
|
|
|
|
U32 mSize;
|
|
|
|
static U32 calcByteSize(const U32 numBits);
|
|
|
|
public:
|
|
BitVector();
|
|
BitVector(const U32 _size);
|
|
~BitVector();
|
|
|
|
void setSize(const U32 _size);
|
|
U32 getSize() const;
|
|
U32 getByteSize() const;
|
|
U32 getAllocatedByteSize() const { return mByteSize; }
|
|
|
|
const U8* getBits() const { return mBits; }
|
|
U8* getNCBits() { return mBits; }
|
|
|
|
bool copy(const BitVector& from);
|
|
|
|
void clear();
|
|
void set();
|
|
|
|
void set(U32 bit);
|
|
void clear(U32 bit);
|
|
bool test(U32 bit) const;
|
|
};
|
|
|
|
inline BitVector::BitVector()
|
|
{
|
|
mBits = NULL;
|
|
mByteSize = 0;
|
|
|
|
mSize = 0;
|
|
}
|
|
|
|
|
|
inline BitVector::BitVector(const U32 _size)
|
|
{
|
|
mBits = NULL;
|
|
mByteSize = 0;
|
|
|
|
mSize = 0;
|
|
|
|
setSize(_size);
|
|
}
|
|
|
|
inline BitVector::~BitVector()
|
|
{
|
|
delete [] mBits;
|
|
mBits = NULL;
|
|
mByteSize = 0;
|
|
|
|
mSize = 0;
|
|
}
|
|
|
|
inline U32 BitVector::calcByteSize(const U32 numBits)
|
|
{
|
|
// Make sure that we are 32 bit aligned
|
|
//
|
|
return (((numBits + 0x7) >> 3) + 0x3) & ~0x3;
|
|
}
|
|
|
|
inline void BitVector::setSize(const U32 _size)
|
|
{
|
|
if (_size != 0) {
|
|
U32 newSize = calcByteSize(_size);
|
|
if (mByteSize < newSize) {
|
|
delete [] mBits;
|
|
mBits = new U8[newSize];
|
|
mByteSize = newSize;
|
|
}
|
|
} else {
|
|
delete [] mBits;
|
|
mBits = NULL;
|
|
mByteSize = 0;
|
|
}
|
|
|
|
mSize = _size;
|
|
}
|
|
|
|
inline U32 BitVector::getSize() const
|
|
{
|
|
return mSize;
|
|
}
|
|
|
|
inline U32 BitVector::getByteSize() const
|
|
{
|
|
return calcByteSize(mSize);
|
|
}
|
|
|
|
inline void BitVector::clear()
|
|
{
|
|
if (mSize != 0)
|
|
dMemset(mBits, 0x00, calcByteSize(mSize));
|
|
}
|
|
|
|
inline bool BitVector::copy(const BitVector& from)
|
|
{
|
|
U32 sourceSize = from.getSize();
|
|
if (sourceSize) {
|
|
setSize(sourceSize);
|
|
dMemcpy(mBits, from.getBits(), getByteSize());
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
inline void BitVector::set()
|
|
{
|
|
if (mSize != 0)
|
|
dMemset(mBits, 0xFF, calcByteSize(mSize));
|
|
}
|
|
|
|
inline void BitVector::set(U32 bit)
|
|
{
|
|
AssertFatal(bit < mSize, "Error, out of range bit");
|
|
|
|
mBits[bit >> 3] |= U8(1 << (bit & 0x7));
|
|
}
|
|
|
|
inline void BitVector::clear(U32 bit)
|
|
{
|
|
AssertFatal(bit < mSize, "Error, out of range bit");
|
|
|
|
mBits[bit >> 3] &= U8(~(1 << (bit & 0x7)));
|
|
}
|
|
|
|
inline bool BitVector::test(U32 bit) const
|
|
{
|
|
AssertFatal(bit < mSize, "Error, out of range bit");
|
|
|
|
return (mBits[bit >> 3] & U8(1 << (bit & 0x7))) != 0;
|
|
}
|
|
|
|
#endif //_BITVECTOR_H_
|