/
square.go
154 lines (136 loc) · 2 KB
/
square.go
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package engine
import (
"fmt"
)
type Rank int8
const (
Rank1 Rank = iota
Rank2
Rank3
Rank4
Rank5
Rank6
Rank7
Rank8
)
type File int8
const (
FileA File = iota
FileB
FileC
FileD
FileE
FileF
FileG
FileH
)
var Ranks = []Rank{Rank1, Rank2, Rank3, Rank4, Rank5, Rank6, Rank7, Rank8}
var Files = []File{FileA, FileB, FileC, FileD, FileE, FileF, FileG, FileH}
type Square int8
func (sq Square) String() string {
return sq.Name()
}
const DarkSquares uint64 = 0xAA55AA55AA55AA55
func (sq Square) GetColor() Color {
if (DarkSquares>>uint64(sq))&1 != 0 {
return Black
}
return White
}
func (f File) Name() string {
return string('a' + byte(f))
}
func (r Rank) Name() int {
return (int(r) + 1)
}
func (s Square) Name() string {
var fileName = s.File().Name()
var rankName = s.Rank().Name()
return fmt.Sprint(fileName, rankName)
}
func (sq Square) File() File {
return File(sq & 7)
}
func (sq Square) Rank() Rank {
return Rank(sq / 8)
}
func SquareOf(file File, rank Rank) Square {
return Square((int(rank) * 8) + int(file))
}
const (
NoSquare Square = iota - 1
A1
B1
C1
D1
E1
F1
G1
H1
A2
B2
C2
D2
E2
F2
G2
H2
A3
B3
C3
D3
E3
F3
G3
H3
A4
B4
C4
D4
E4
F4
G4
H4
A5
B5
C5
D5
E5
F5
G5
H5
A6
B6
C6
D6
E6
F6
G6
H6
A7
B7
C7
D7
E7
F7
G7
H7
A8
B8
C8
D8
E8
F8
G8
H8
)
var NameToSquareMap = map[string]Square{
"a1": A1, "a2": A2, "a3": A3, "a4": A4, "a5": A5, "a6": A6, "a7": A7, "a8": A8,
"b1": B1, "b2": B2, "b3": B3, "b4": B4, "b5": B5, "b6": B6, "b7": B7, "b8": B8,
"c1": C1, "c2": C2, "c3": C3, "c4": C4, "c5": C5, "c6": C6, "c7": C7, "c8": C8,
"d1": D1, "d2": D2, "d3": D3, "d4": D4, "d5": D5, "d6": D6, "d7": D7, "d8": D8,
"e1": E1, "e2": E2, "e3": E3, "e4": E4, "e5": E5, "e6": E6, "e7": E7, "e8": E8,
"f1": F1, "f2": F2, "f3": F3, "f4": F4, "f5": F5, "f6": F6, "f7": F7, "f8": F8,
"g1": G1, "g2": G2, "g3": G3, "g4": G4, "g5": G5, "g6": G6, "g7": G7, "g8": G8,
"h1": H1, "h2": H2, "h3": H3, "h4": H4, "h5": H5, "h6": H6, "h7": H7, "h8": H8,
}