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Rook movement

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k 2025-06-19 03:49:48 -04:00
parent bfe9335515
commit 49befc72b6
3 changed files with 71 additions and 2 deletions
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1
headers/moves.h
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@ -3,4 +3,5 @@
#include "types.h" #include "types.h"
int pawnMove(game *g, move *moves); int pawnMove(game *g, move *moves);
int knightMove(game *g, move* moves); int knightMove(game *g, move* moves);
int rookMove(game *g, move *moves);
#endif #endif

1
src/main.c
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@ -58,6 +58,7 @@ int main() {
int cnt = 0; int cnt = 0;
cnt += pawnMove(g,mov); cnt += pawnMove(g,mov);
cnt += knightMove(g,(mov+cnt)); cnt += knightMove(g,(mov+cnt));
cnt += rookMove(g,(mov+cnt));
move *m = &mov[rand() % cnt]; move *m = &mov[rand() % cnt];
char *end = ""; char *end = "";

71
src/moves.c
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@ -4,6 +4,8 @@
#include <stddef.h> #include <stddef.h>
#include <stdlib.h> #include <stdlib.h>
int rookScan(game *g, move *moves,long long w, long long b);
int pawnMove(game *g, move *moves) { int pawnMove(game *g, move *moves) {
long long pawns = g->whiteToMove ? g->white.pawns : g->black.pawns; long long pawns = g->whiteToMove ? g->white.pawns : g->black.pawns;
long long enemy = g->whiteToMove ? fullSet(&g->black) : fullSet(&g->white); long long enemy = g->whiteToMove ? fullSet(&g->black) : fullSet(&g->white);
@ -41,7 +43,6 @@ int pawnMove(game *g, move *moves) {
return index; return index;
} }
int knightMove(game *g, move *moves) { int knightMove(game *g, move *moves) {
long long knights = g->whiteToMove ? g->white.knights : g->black.knights; long long knights = g->whiteToMove ? g->white.knights : g->black.knights;
long long occupied = g->whiteToMove ? fullSet(&g->white) : fullSet(&g->black); long long occupied = g->whiteToMove ? fullSet(&g->white) : fullSet(&g->black);
@ -75,7 +76,7 @@ int knightMove(game *g, move *moves) {
continue; continue;
long long destBit = 1LL << to; long long destBit = 1LL << to;
if (occupied & destBit) // Skip if destination has friendly piece if (occupied & destBit)
continue; continue;
moves[index++] = (move){.From = i, .To = to}; moves[index++] = (move){.From = i, .To = to};
@ -83,3 +84,69 @@ int knightMove(game *g, move *moves) {
} }
return index; return index;
} }
int rookMove(game *g, move *moves){
return rookScan(g,moves,g->white.rooks,g->black.rooks);
}
int rookScan(game *g, move *moves,long long w, long long b){
long long rooks = g->whiteToMove ? w : b;
long long occupied = g->whiteToMove ? fullSet(&g->white) : fullSet(&g->black);
long long occupiedE = !g->whiteToMove ? fullSet(&g->white) : fullSet(&g->black);
int index = 0;
for(int i = 0; i < 64; i++){
long long bit = 1LL << i;
int x = i % 8;
int y = i / 8;
if(!(rooks & bit))
continue;
//fwd
for(int j = y + 1; j < 8; j++){
int to = (j * 8) + x;
long long lbit = 1LL << to;
if(occupied & lbit)
break;
moves[index++] = (move){.From = i, .To = to};
if(occupiedE & lbit)
break;
}
//bck
for(int j = y - 1; j >= 0; j--){
int to = (j * 8) + x;
long long lbit = 1LL << to;
if(occupied & lbit)
break;
moves[index++] = (move){.From = i, .To = to};
if(occupiedE & lbit)
break;
}
//rht
for(int j = x + 1; j < 8; j++){
int to = (y * 8) + j;
long long lbit = 1LL << to;
if(occupied & lbit)
break;
moves[index++] = (move){.From = i, .To = to};
if(occupiedE & lbit)
break;
}
//lft
for(int j = x - 1; j >= 0; j--){
int to = (y * 8) + j;
long long lbit = 1LL << to;
if(occupied & lbit)
break;
moves[index++] = (move){.From = i, .To = to};
if(occupiedE & lbit)
break;
}
}
return index;
}