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boardTable.h
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1 /* directionTable.h
2  */
3 #ifndef OSL_BOARD_TABLE_H
4 #define OSL_BOARD_TABLE_H
5 
6 #include "osl/direction.h"
7 #include "osl/misc/carray.h"
8 #include "osl/offset32.h"
9 
10 namespace osl
11 {
12  class BoardTable
13  {
14  CArray<Direction,Offset32::SIZE> directions;
15  // 上位はoffsetが,下位3bitはdirectionが入る. 
16  CArray<signed char,Offset::ONBOARD_OFFSET_SIZE> short8Offset;
17  CArray<unsigned char,Offset::ONBOARD_OFFSET_SIZE> short8Dir;
18  CArray<Offset, Offset32::SIZE> short_offsets;
19  CArray<Offset, Offset32::SIZE> short_offsets_not_knight;
20 #ifndef MINIMAL
21  CArray<int,Offset32Wide::SIZE> space_counts;
22 #endif
23  public:
24  static const CArray<Offset, DIRECTION_SIZE> offsets;
25  static const CArray<int, DIRECTION_SIZE> dxs;
26  static const CArray<int, DIRECTION_SIZE> dys;
27  private:
28  template<Direction Dir>
29  void setDirections();
30  template<Direction Dir>
31  void setKnightDirections();
32  void init();
33  public:
38  return offsets[static_cast<int>(dir)];
39  }
40  int getDxForBlack(Direction dir) const{
41  return dxs[static_cast<int>(dir)];
42  }
43  int getDyForBlack(Direction dir) const{
44  return dys[static_cast<int>(dir)];
45  }
46  template<Player P>
47  const Offset getOffset(Direction dir) const{
48  return getOffsetForBlack(dir)*playerToMul(P);
49  }
50  const Offset getOffset(Player pl,Direction dir) const{
51  if (pl==BLACK)
52  return getOffset<BLACK>(dir);
53  else
54  return getOffset<WHITE>(dir);
55  }
56 
61  const Square nextSquare(Player P, Square pos, Direction dr) const
62  {
63  assert(pos.isOnBoard());
64  const Offset offset = getOffset(P, dr);
65  return pos + offset;
66  }
67 
68  BoardTable();
70  template <Player P>
72  {
73  assert(offset32.isValid());
74  const Offset32 blackOffset32 = offset32.blackOffset32<P>();
75  Direction ret=directions[blackOffset32.index()];
76  assert(isValid(ret));
77  return ret;
78  }
80  {
81  if (P == BLACK)
82  return getLongDirection<BLACK>(offset32);
83  else
84  return getLongDirection<WHITE>(offset32);
85  }
87  template <Player P>
89  {
90  return getLongDirection<P>(Offset32(to,from));
91  }
92 #ifndef MINIMAL
93 
99  int spaceCounts(Square from,Square to) const
100  {
101  Offset32Wide offset32(from,to);
102  return space_counts[offset32.index()];
103  }
104 #endif
105 
110  const Offset getShortOffset(Offset32 offset32) const{
111  assert(offset32.isValid());
112  return short_offsets[offset32.index()];
113  }
119  const Offset getShortOffsetNotKnight(Offset32 offset32) const{
120  assert(offset32.isValid());
121  return short_offsets_not_knight[offset32.index()];
122  }
127  int i=(int)(to.uintValue())-(int)(from.uintValue())-Offset::ONBOARD_OFFSET_MIN;
128  return Offset::makeDirect(short8Offset[i]);
129  }
133  template<Player P>
135  if(P==BLACK)
136  return static_cast<Direction>(short8Dir[(int)(to.uintValue())-(int)(from.uintValue())-Offset::ONBOARD_OFFSET_MIN]);
137  else
138  return static_cast<Direction>(short8Dir[(int)(from.uintValue())-(int)(to.uintValue())-Offset::ONBOARD_OFFSET_MIN]);
139  }
141  if(P==BLACK)
142  return getShort8Unsafe<BLACK>(from, to);
143  else
144  return getShort8Unsafe<WHITE>(from, to);
145  }
146  template<Player P>
148  assert(from.isOnBoard() && to.isOnBoard());
149  assert(from.x()==to.x() || from.y()==to.y() ||
150  abs(from.x()-to.x())==abs(from.y()-to.y()));
151  return getShort8Unsafe<P>(from,to);
152  }
153 
154  template<Player P>
156  assert(from.isOnBoard() && to.isOnBoard());
157  assert(from.x()==to.x() || from.y()==to.y() ||
158  abs(from.x()-to.x())==abs(from.y()-to.y()));
159  int i=(int)(to.uintValue())-(int)(from.uintValue())-Offset::ONBOARD_OFFSET_MIN;
161  Direction d=static_cast<Direction>(short8Dir[i]);
162  if(P==BLACK)
163  return d;
164  else
165  return inverse(d);
166  }
172  bool isBetween(Square t,Square p0,Square p1) const
173  {
174  int i1=(int)(t.uintValue())-(int)(p0.uintValue())-Offset::ONBOARD_OFFSET_MIN;
175  int i2=(int)(p1.uintValue())-(int)(t.uintValue())-Offset::ONBOARD_OFFSET_MIN;
177  return short8Dir[i1]==short8Dir[i2];
178  }
179  bool isBetweenSafe(Square t,Square p0,Square p1) const
180  {
181  if (getShortOffsetNotKnight(Offset32(t, p0)).zero())
182  return false;
183  return isBetween(t, p0, p1);
184  }
185  };
186 
187  extern const BoardTable Board_Table;
188 } // namespace osl
189 
190 
191 #endif /* OSL_BOARD_TABLE_H */
192 // ;;; Local Variables:
193 // ;;; mode:c++
194 // ;;; c-basic-offset:2
195 // ;;; End: