// generates an opening book based

// off of the google drive set of

// grandmaster games.

main :: () {

init_xiangqi_tables();

random_seed(0xcafe_babe_10_31_1517);

FILE_NAME :: "xiangqi_games.txt";

text, success := read_entire_file(FILE_NAME);

if !success {

print("Error. % cannot be opened.", FILE_NAME);

return;

}

table: Table(Xiangqi, string,

(xiangqi)=>xiangqi.hash,

(a,b) => a.hash == b.hash);

xiangqi: Xiangqi;

xiangqi_startpos(*xiangqi);

for i: 0..1_000_000_000 {

print("Game Number %\n", i);

found, line, rest := split_from_left(text, #char "\n");

if found == false {

break;

}

defer {

text = rest;

}

reset_temporary_storage();

replace_chars(line, "',", #char " ");

xiangqi_startpos(*xiangqi);

mov1 := (random_get() % 30) 5;

mov2 := (random_get() % 30) 5;

mov3 := (random_get() % 30) 5;

for index: 0..cast(u64)1_000_000 {

line = eat_spaces(line);

token, found := parse_token(*line);

if found == false {

break;

}

move := to_move32(*xiangqi, token);

make_move(*xiangqi, move);

if mov1 != index && mov2 != index && mov3 != index then {

continue;

}

fenstring := to_fenstring(*xiangqi);

if table_find_pointer(*table, xiangqi) == null {

table_add(*table, xiangqi, copy_string(fenstring));

}

}

}

builder: String_Builder;

append(*builder, "xiangqi_openings :: string.[\n");

for value, key: table {

print_to_builder(*builder, " \"%\",\n", value);

}

append(*builder, "];\n");

data := builder_to_string(*builder);

write_entire_file("opening_book.jai", data);

}

#import "Basic";

#import "File";

#import "String";

#import "Random";

#load "board.jai";

#import "Math";

#import "Hash_Table";