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Implement Unmake storing and reading (untested)

This commit is contained in:
Quinten Kock 2020-06-15 19:12:11 +02:00
parent c1934f6398
commit 3797e28c5b
1 changed files with 34 additions and 17 deletions
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51
Board.h
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@ -3,6 +3,13 @@
#include "Types.h" #include "Types.h"
struct Unmake {
byte sq_from;
byte sq_to;
byte enpassant;
};
class Board { class Board {
public: public:
Board(); Board();
@ -45,33 +52,49 @@ class Board {
const byte PTR_ENPASSANT = 0x18; const byte PTR_ENPASSANT = 0x18;
const byte UNMAKE_START = 0x1A; const byte PTR_UNMAKE_START = 0x1A;
const byte PTR_UNMAKE_LAST = 0x7F;
inline byte get_unmake() __attribute__((always_inline)) { inline byte get_unmake() __attribute__((always_inline)) {
return field[PTR_PTR_REVMOV]; return field[PTR_PTR_REVMOV];
} }
byte next_unmake() { byte next_unmake() {
field[PTR_PTR_REVMOV]++; field[PTR_PTR_REVMOV]++;
if(get_unmake() >= 0x80) { if(get_unmake() > PTR_UNMAKE_LAST) {
field[PTR_PTR_REVMOV] = UNMAKE_START; field[PTR_PTR_REVMOV] = PTR_UNMAKE_START;
return UNMAKE_START; return PTR_UNMAKE_START;
} }
while(get_unmake() & 0x88) { if(!(get_unmake() & 0x8)) {
field[PTR_PTR_REVMOV]++; field[PTR_PTR_REVMOV] += 0x8;
} }
return get_unmake(); return get_unmake();
} }
byte prev_unmake() { byte prev_unmake() {
field[PTR_PTR_REVMOV]--; field[PTR_PTR_REVMOV]--;
if(get_unmake() < UNMAKE_START) { if(get_unmake() < PTR_UNMAKE_START) {
field[PTR_PTR_REVMOV] = 0x7F; field[PTR_PTR_REVMOV] = PTR_UNMAKE_LAST;
return 0x7F; return PTR_UNMAKE_LAST;
} }
while(get_unmake() & 0x88) { if(!(get_unmake() & 0x8)) {
field[PTR_PTR_REVMOV]--; field[PTR_PTR_REVMOV] -= 0x8;
} }
return get_unmake(); return get_unmake();
} }
void store_unmake(Unmake *u) {
field[get_unmake()] = *(byte*)u;
for(size_t i = 0; i < sizeof(u); i++) {
field[next_unmake()] = *(byte*)(u+i);
}
}
Unmake read_unmake() {
Unmake u;
byte* ptr = (byte*) &u;
for(size_t i = sizeof(u) - 1; i >= 0; i++) {
ptr[i] = field[prev_unmake()];
}
return u;
}
}; };
@ -81,10 +104,4 @@ Board::Board() {
} }
struct Unmake {
byte sq_from;
byte sq_to;
byte enpassant;
};
#endif #endif