123 lines
2.7 KiB
C++
123 lines
2.7 KiB
C++
#ifndef __BOARD_H_INC
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#define __BOARD_H_INC
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#include "Types.h"
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#include "Panic.h"
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#include "Move.h"
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struct Unmove {
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byte sq_from;
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byte sq_to;
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byte enpassant;
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};
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class Board {
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public:
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Board();
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void make(Move m);
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void unmove();
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void print();
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unsigned long get_zobrist() {
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long* addr = (long*) &field[PTR_ZOBRIST];
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return *addr;
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}
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byte field[128] = {
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W_ROOK, W_KNGT, W_BSHP, W_QUEN, W_KING, W_BSHP, W_KNGT, W_ROOK, 0, 0, 0, 0, 0, 0, 0, 0,
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W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, 0, 0, 0, 0, 0, 0, 0, 0,
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B_ROOK, B_KNGT, B_BSHP, B_QUEN, B_KING, B_BSHP, B_KNGT, B_ROOK, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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private:
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static const byte PTR_SIDE_AND_CASTLERIGHT = 0x08; //byte (1=side, 2,4=white castle, 8,16=black)
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// CAN FILL 0x09
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static const byte PTR_W_KING = 0x0A; // byte (points to index or maybe 64-arr index)
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// const byte PTR_B_KING = 0x0B; (PTR_W_KING | COLOR or PTR_W_KING + COLOR)
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static const byte PTR_ZOBRIST = 0x0C; // 4 bytes
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// 0x0D
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// 0x0E
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// 0x0F
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static const byte PTR_ENPASSANT = 0x18;
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static const byte PTR_REVMOV = 0x19;
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// free space
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static const byte PTR_UNMOVE_START = 0x28;
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static const byte PTR_UNMOVE_LAST = 0x7E;
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byte PTR_UNMOVE = PTR_UNMOVE_START;
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void next_unmove();
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void prev_unmove();
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void store_unmove(Unmove u);
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Unmove read_unmove();
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};
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Board::Board() {
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// Then, other data we need to store is assigned 0-fields.
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field[PTR_ZOBRIST+1] = 1;
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}
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void Board::print() {
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for(char i = 7; i >= 0; i--) {
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for(byte j = 0; j < 16; j++) {
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Serial.print(field[i*16 + j], HEX);
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Serial.print(" ");
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}
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Serial.println();
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}
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}
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void Board::make(Move m) {
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Unmove u = Unmove {0xAA, 0xBB, 0xCC};
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store_unmove(u);
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Unmove u2 = read_unmove();
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Serial.println(u2.sq_to, HEX);
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}
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void Board::next_unmove() {
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PTR_UNMOVE++;
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if(PTR_UNMOVE > PTR_UNMOVE_LAST) {
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panic(F("Unmove stack overflow"));
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}
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if(!(PTR_UNMOVE & 0x8)) {
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PTR_UNMOVE += 0x8;
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}
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}
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void Board::prev_unmove() {
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PTR_UNMOVE--;
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if(PTR_UNMOVE < PTR_UNMOVE_START) {
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panic(F("Unmaking from empty stack"));
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}
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if(!(PTR_UNMOVE & 0x8)) {
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PTR_UNMOVE -= 0x8;
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}
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}
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void Board::store_unmove(Unmove u) {
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byte *ub = (byte*) &u;
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for(size_t i = 0; i < sizeof(u); i++) {
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next_unmove();
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field[PTR_UNMOVE] = ub[i];
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}
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}
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Unmove Board::read_unmove() {
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Unmove u;
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byte* ptr = (byte*) &u;
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for(int i = sizeof(u) - 1; i >= 0; i--) {
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ptr[i] = field[PTR_UNMOVE];
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prev_unmove();
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}
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return u;
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}
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#endif
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