/usr/include/osl/offset.h is in libosl-dev 0.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*/
#ifndef OSL_OFFSET_H
#define OSL_OFFSET_H
#include "osl/player.h"
#include "osl/direction.h"
#include "osl/misc/loki.h"
#include <iosfwd>
namespace osl
{
/**
* 座標の差分
*/
class Offset
{
public:
enum {
OFFSET_MIN=-0x100,
ONBOARD_OFFSET_MIN=-0x88,
OFFSET_ZERO=0,
ONBOARD_OFFSET_MAX=0x88,
OFFSET_MAX=0x100,
ONBOARD_OFFSET_SIZE=0x88*2+1
};
static const int BOARD_HEIGHT=16;
private:
int offset;
explicit Offset(int o) : offset(o)
{
}
public:
static const Offset makeDirect(int value) { return Offset(value); }
int intValue() const { return offset; }
public:
static int makeOffset(int dx,int dy) { return dx*BOARD_HEIGHT + dy; }
Offset(int dx,int dy) : offset(makeOffset(dx,dy))
{
}
Offset(Player, Direction);
Offset() : offset(OFFSET_ZERO)
{
}
template <Player, Direction>
static Offset make(); // defined in directionTraits.h
static const Offset ZERO() { return Offset(OFFSET_ZERO); }
int
#ifdef __GNUC__
__attribute__ ((pure))
#endif
dx() const;
int
#ifdef __GNUC__
__attribute__ ((pure))
#endif
dy() const;
unsigned int index() const { return offset - OFFSET_MIN; }
Offset& operator+=(Offset other)
{
offset += other.offset;
return *this;
}
Offset& operator-=(Offset other){
offset -= other.offset;
return *this;
}
const Offset operator+(Offset other) const
{
Offset result(*this);
return result += other;
}
const Offset operator-(const Offset other) const
{
Offset result(*this);
return result -= other;
}
const Offset operator*(const int mult) const {
return static_cast<Offset>(static_cast<int>(offset)*mult);
}
const Offset operator-() const { return Offset(-offset); }
#if 0
inline Offset operator*(const Offset off1,const Offset off2){
return static_cast<Offset>(static_cast<int>(off1)*static_cast<int>(off2));
}
#endif
private:
const Offset blackOffset(Int2Type<BLACK>) const { return *this; }
const Offset blackOffset(Int2Type<WHITE>) const { return -(*this); }
public:
/**
* Player P からみた offset を黒番のものに変更する
*/
template <Player P>
const Offset blackOffset() const { return blackOffset(Int2Type<P>()); }
bool zero() const { return offset == OFFSET_ZERO; }
};
/**
* @obsolete
*/
inline Offset newOffset(int dx,int dy){
return Offset(dx,dy);
}
inline bool operator==(Offset l, Offset r)
{
return l.intValue() == r.intValue();
}
inline bool operator!=(Offset l, Offset r)
{
return ! (l == r);
}
inline bool operator<(Offset l, Offset r)
{
return l.intValue() < r.intValue();
}
std::ostream& operator<<(std::ostream&, Offset);
} // namespace osl
#endif /* OSL_OFFSET_H */
// ;;; Local Variables:
// ;;; mode:c++
// ;;; c-basic-offset:2
// ;;; End:
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