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constants.go
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constants.go
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package main
import (
"time"
dt "github.com/dylhunn/dragontoothmg"
)
const MAXVALUE int = 100000
const MINVALUE int = -100000
const LMR_LIMIT = 5
const DOUBLE_PAWNS_PENALTY = -15
const ISOLATED_PAWNS_PENALTY = -20
const KNIGHT_MOBILITY = 6
const BISHOP_MOBILITY = 4
const ROOK_MOBILITY = 3
const QUEEN_MOBILITY = 3
const SPACE_PER_FRONTSPAN = 1
const KING_SAFETY_SQUARE = 8
var TIMECHECK_FREQ int = 5000
var isEndgame = false
var nodes int
var deepestQuiescence int
var timeCheckCounter = TIMECHECK_FREQ
var endTime = time.Now().AddDate(1000, 10, 10)
var searching = true
var maxDepth int
var lastTime int
var pieceTypesnoking []int
var pieceTypes []int
var pieceAttackUnits []int
var kingSafety []int
var pawns []int
var pawnsBlack []int
var knights []int
var knightsBlack []int
var bishops []int
var bishopsBlack []int
var rooks []int
var rooksBlack []int
var queens []int
var queensBlack []int
var kings []int
var kingsBlack []int
var kingMiddlegame []int
var kingMiddlegameBlack []int
var kingEndgame []int
var kingEndgameBlack []int
var pieceVal []int
var attackSquareVal []int
var isolatedPawnTable = [8]uint64{
0x303030303030303, 0x707070707070707, 0xe0e0e0e0e0e0e0e, 0x1c1c1c1c1c1c1c1c,
0x3838383838383838, 0x7070707070707070, 0xe0e0e0e0e0e0e0e0, 0xc0c0c0c0c0c0c0c0,
}
var onlyFile = [8]uint64{
0x0101010101010101, 0x0202020202020202, 0x0404040404040404, 0x0808080808080808,
0x1010101010101010, 0x2020202020202020, 0x4040404040404040, 0x8080808080808080}
var onlyRank = [8]uint64{
0xFF, 0xFF00, 0xFF0000, 0xFF000000,
0xFF00000000, 0xFF0000000000, 0xFF000000000000, 0xFF00000000000000}
func init() {
pieceTypesnoking = []int{dt.Pawn, dt.Knight, dt.Bishop, dt.Rook, dt.Queen}
pieceTypes = append(pieceTypesnoking, dt.King)
pieceAttackUnits = []int{0, 2, 2, 5, 3, 1, 0}
kingSafety = []int{
0, 0, 1, 2, 3, 5, 7, 9, 12, 15,
18, 22, 26, 30, 35, 39, 44, 50, 56, 62,
68, 75, 82, 85, 89, 97, 105, 113, 122, 131,
140, 150, 169, 180, 191, 202, 213, 225, 237, 248,
260, 272, 283, 295, 307, 319, 330, 342, 354, 366,
377, 389, 401, 412, 424, 436, 448, 459, 471, 483,
494, 500, 500, 500, 500, 500, 500, 500, 500, 500,
500, 500, 500, 500, 500, 500, 500, 500, 500, 500,
500, 500, 500, 500, 500, 500, 500, 500, 500, 500,
500, 500, 500, 500, 500, 500, 500, 500, 500, 500,
}
pawnsBlack = []int{0, 0, 0, 0, 0, 0, 0, 0,
50, 50, 50, 50, 50, 50, 50, 50,
10, 10, 20, 30, 30, 20, 10, 10,
5, 5, 10, 25, 25, 10, 5, 5,
0, 0, 0, 20, 20, 0, 0, 0,
5, -5, -10, 0, 0, -10, -5, 5,
5, 10, 10, -20, -20, 10, 10, 5,
0, 0, 0, 0, 0, 0, 0, 0}
pawns = reverse(pawnsBlack)
knightsBlack = []int{-50, -40, -30, -30, -30, -30, -40, -50,
-40, -20, 0, 0, 0, 0, -20, -40,
-30, 0, 10, 15, 15, 10, 0, -30,
-30, 5, 15, 20, 20, 15, 5, -30,
-30, 0, 15, 20, 20, 15, 0, -30,
-30, 5, 10, 15, 15, 10, 5, -30,
-40, -20, 0, 5, 5, 0, -20, -40,
-50, -40, -30, -30, -30, -30, -40, -50}
knights = reverse(knightsBlack)
bishopsBlack = []int{-20, -10, -10, -10, -10, -10, -10, -20,
-10, 0, 0, 0, 0, 0, 0, -10,
-10, 0, 5, 10, 10, 5, 0, -10,
-10, 5, 5, 10, 10, 5, 5, -10,
-10, 0, 10, 10, 10, 10, 0, -10,
-10, 10, 10, 10, 10, 10, 10, -10,
-10, 5, 0, 0, 0, 0, 5, -10,
-20, -10, -10, -10, -10, -10, -10, -20}
bishops = reverse(bishopsBlack)
rooksBlack = []int{0, 0, 0, 0, 0, 0, 0, 0,
5, 10, 10, 10, 10, 10, 10, 5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
0, 0, 0, 5, 5, 0, 0, 0}
rooks = reverse(rooksBlack)
queensBlack = []int{-20, -10, -10, -5, -5, -10, -10, -20,
-10, 0, 0, 0, 0, 0, 0, -10,
-10, 0, 5, 5, 5, 5, 0, -10,
-5, 0, 5, 5, 5, 5, 0, -5,
0, 0, 5, 5, 5, 5, 0, -5,
-10, 5, 5, 5, 5, 5, 0, -10,
-10, 0, 5, 0, 0, 0, 0, -10,
-20, -10, -10, -5, -5, -10, -10, -20}
queens = reverse(queensBlack)
kingMiddlegameBlack = []int{-30, -40, -40, -50, -50, -40, -40, -30,
-30, -40, -40, -50, -50, -40, -40, -30,
-30, -40, -40, -50, -50, -40, -40, -30,
-30, -40, -40, -50, -50, -40, -40, -30,
-20, -30, -30, -40, -40, -30, -30, -20,
-10, -20, -20, -20, -20, -20, -20, -10,
20, 20, 0, 0, 0, 0, 20, 20,
20, 30, 10, 0, 0, 10, 30, 20}
kingMiddlegame = reverse(kingMiddlegameBlack)
kingEndgameBlack = []int{-50, -40, -30, -20, -20, -30, -40, -50,
-30, -20, -10, 0, 0, -10, -20, -30,
-30, -10, 20, 30, 30, 20, -10, -30,
-30, -10, 30, 40, 40, 30, -10, -30,
-30, -10, 30, 40, 40, 30, -10, -30,
-30, -10, 20, 30, 30, 20, -10, -30,
-30, -30, 0, 0, 0, 0, -30, -30,
-50, -30, -30, -30, -30, -30, -30, -50}
kingEndgame = reverse(kingEndgameBlack)
pieceVal = []int{0, 100, 320, 330, 500, 935, 0}
attackSquareVal = []int{0, 1, 4, 2, 2, 2, 0}
}