uci.c

#include "stdio.h"
#include "string.h"
#include "def.h"
#define NOMOVE 0
char START_FEN[] = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";

#define INPUTBUFFER 400 * 6

// Go depth 6 wtime 180000 btime 100000 binc 1000 winc 1000 movetime 1000 movestogo 40.
void ParseGo(char* line, SEARCHINFO* info, BOARD* pos)
{
    int depth = -1, movestogo = 30, movetime = -1;
    int time = -1, inc = 0;
    char* ptr = NULL;
    info->timeset = FALSE;

    if ((ptr = strstr(line, "infinite")))
    {
        ;
    }

    if ((ptr = strstr(line, "binc")) && pos->Side == BLACK)
    {
        inc = atoi(ptr + 5);
    }

    if ((ptr = strstr(line, "winc")) && pos->Side == WHITE)
    {
        inc = atoi(ptr + 5);
    }

    if ((ptr = strstr(line, "wtime")) && pos->Side == WHITE)
    {
        time = atoi(ptr + 6);
    }

    if ((ptr = strstr(line, "btime")) && pos->Side == BLACK)
    {
        time = atoi(ptr + 6);
    }

    if ((ptr = strstr(line, "movestogo")))
    {
        movestogo = atoi(ptr + 10);
    }

    if ((ptr = strstr(line, "movetime")))
    {
        movetime = atoi(ptr + 9);
    }

    if ((ptr = strstr(line, "depth")))
    {
        depth = atoi(ptr + 6);
    }

    if (movetime != -1)
    {
        time = movetime;
        movestogo = 1;
    }

    info->starttime = GetTime();
    info->depth = depth;
    if (time != -1)
    {
        info->timeset = TRUE;
        time /= movestogo;
        time -= 50;
        info->stoptime = info->starttime + time + inc;
    }

    if (depth == -1)
    {
        info->depth = MAXDEPTH;
    }

    printf("time:%d start:%d stop:%d depth:%d timeset:%d\n",
           time,
           info->starttime,
           info->stoptime,
           info->depth,
           info->timeset);
    SearchPos(pos, info);
}

void ParsePosition(char* lineIn, BOARD* pos)
{
    lineIn += 9;
    char* ptrChar = lineIn;

    if (strncmp(lineIn, "startpos", 8) == 0)
    {
        CalcFen(START_FEN, pos);
    }
    else
    {
        ptrChar = strstr(lineIn, "fen");
        if (ptrChar == NULL)
        {
            CalcFen(START_FEN, pos);
        }
        else
        {
            ptrChar += 4;
            CalcFen(ptrChar, pos);
        }
    }

    ptrChar = strstr(lineIn, "moves");
    int move;

    if (ptrChar != NULL)
    {
        ptrChar += 6;
        while (*ptrChar)
        {
            move = ParseMove(ptrChar, pos);
            if (move == NOMOVE)
                break;
            MakeMove(pos, move);
            pos->Ply = 0;
            while (*ptrChar && *ptrChar != ' ')
                ptrChar++;
            ptrChar++;
        }
    }
    PrintBoard(pos);
}

void Uci_Loop()
{
    setbuf(stdin, NULL);
    setbuf(stdout, NULL);

    char line[INPUTBUFFER];
    printf("id name %s\n", NAME);
    printf("id author Prakhar\n");
    printf("uciok\n");

    BOARD pos[1];
    SEARCHINFO info[1];
    info->quit = 0;
    InitPvTable(pos->PvTable);

    while (TRUE)
    {
        memset(&line[0], 0, sizeof(line));
        fflush(stdout);
        if (!fgets(line, INPUTBUFFER, stdin))
            continue;

        if (line[0] == '\n')
            continue;

        if (!strncmp(line, "isready", 7))
        {
            printf("readyok\n");
            continue;
        }
        else if (!strncmp(line, "position", 8))
        {
            ParsePosition(line, pos);
        }
        else if (!strncmp(line, "ucinewgame", 10))
        {
            ParsePosition("position startpos\n", pos);
        }
        else if (!strncmp(line, "go", 2))
        {
            ParseGo(line, info, pos);
        }
        else if (!strncmp(line, "quit", 4))
        {
            info->quit = TRUE;
            break;
        }
        else if (!strncmp(line, "uci", 3))
        {
            printf("id name %s\n", NAME);
            printf("id author Prakhar\n");
            printf("uciok\n");
        }
        if (info->quit)
            break;
    }
}