93 lines
2.5 KiB
JavaScript
93 lines
2.5 KiB
JavaScript
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const nnue_name = "nn-5af11540bbfe.nnue";
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let s_read, s_write, s_main, s_init, s_state;
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let ready = false;
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let ready_cb = null;
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Module.onRuntimeInitialized = async function () {
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let data = await fetch("assets/packages/flutter_stockfish_plugin/web/stockfish_data.bin");
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let b = new Uint8Array(await data.arrayBuffer());
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FS.createDataFile("/", nnue_name, b, true, false, true);
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s_read = Module.cwrap("stockfish_stdout_read", "char*", ["bool"], { async: false });
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s_write = Module.cwrap("stockfish_stdin_write", "ssize_t", ["char*"], { async: false });
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s_main = Module.cwrap("stockfish_start_main", "void", [], { async: false });
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s_init = Module.cwrap("stockfish_init", "int", [], { async: false });
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s_state = Module.cwrap("stockfish_last_main_state", "int", [], { async: false });
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ready = true;
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if (ready_cb) ready_cb();
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}
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function wait_ready(res) {
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if (ready) return void res();
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ready_cb = res;
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}
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let _listener_id = -1;
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let _listener_line_cb = (_) => { };
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let _listener_state_cb = (_) => { };
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let _last_state = -2;
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function _stockfish_listener() {
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let state = s_state();
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if(state >= 0 && _last_state != state){
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_listener_state_cb(state);
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}
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_last_state = state;
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let out = readline();
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while (out.length != 0) {
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_listener_line_cb(out);
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out = readline();
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}
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_listener_id = setTimeout(_stockfish_listener, 10);
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}
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function start_listening(line_cb = (_) => { }, state_cb = (_) => { }) {
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requestAnimationFrame(_stockfish_listener);
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_listener_line_cb = line_cb;
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_listener_state_cb = state_cb;
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s_init();
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s_main();
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}
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function stop_listening() {
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if (_listener_id != -1) clearTimeout(_listener_id);
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_listener_id = -1;
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}
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function _read() {
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let ptr = s_read(true);
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if (ptr == 0) {
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return -1;
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}
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return UTF8ToString(ptr);
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}
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var read_buffer = "";
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function readline() {
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if (!read_buffer.includes("\n"))
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while (true) {
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let next = _read();
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if (next === -1) break;
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read_buffer += next;
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if (next.includes("\n")) break;
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}
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let index = read_buffer.indexOf("\n");
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let out = "";
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if (index == -1) {
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out = read_buffer;
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read_buffer = "";
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} else {
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out = read_buffer.substring(0, index);
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read_buffer = read_buffer.substring(index + 1);
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}
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return out;
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}
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function write(string) {
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let buffer = _malloc(string.length + 1);
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stringToUTF8(string, buffer, string.length + 1);
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let out = s_write(buffer);
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_free(buffer);
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return out;
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}
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