Add persistent cross-game player bank (Refs #3)
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// Actual GSC transfer logic under portable VM/HTTP/disk shims; no game runtime.
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import assert from 'node:assert/strict';
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import { readFileSync } from 'node:fs';
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import vm from 'node:vm';
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const root = new URL('../', import.meta.url);
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function functions(source) {
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const literals = [];
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const protectedSource = source.replace(/"(?:\\.|[^"\\])*"|\/\/[^\n]*|\/\*[\s\S]*?\*\//g, token => {
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if (token.startsWith('/')) return '';
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literals.push(token);
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return `__literal_${literals.length - 1}__`;
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});
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const found = new Map();
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const headers = /^(bank_\w+)\(([^\n]*)\)\s*\n\{/gm;
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for (let match; (match = headers.exec(protectedSource));) {
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let end = headers.lastIndex, depth = 1;
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while (depth && end < protectedSource.length) {
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const ch = protectedSource[end++];
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if (ch === '{') depth++;
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if (ch === '}') depth--;
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}
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assert.equal(depth, 0);
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let body = protectedSource.slice(headers.lastIndex, end - 1);
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const locals = new Set([...body.matchAll(/(?<![\w.])(\w+)\s*(?:[+*/%-]?=(?!=)|\+\+|--)/g)].map(x => x[1]));
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body = body.replace(/\.size\b/g, '.length').replace(/http::request/g, 'httpPost');
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body = body.replace(/player getGuid\(\)/g, 'getGuid(player)');
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body = body.replace(/level thread \w+\(\);/g, '').replace(/level notify\(/g, 'notify(');
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body = body.replace(/level waittill_any\(([^;]+)\);/g, 'yield [$1];');
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body = body.replace(/level waittill\(([^;]+)\);/g, 'yield $1;');
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body = body.replace(/wait \(([^;]+)\);/g, 'yield $1;');
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body = body.replace(/request waittill\([^;]+\);/g, 'var [response, success, error, diagnostics] = httpComplete(request);');
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body = body.replace(/__literal_(\d+)__/g, (_, index) => literals[Number(index)]);
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body = body.replace(/player maps\\(?:mp\\zombies\\_zm_laststand|_laststand)::player_is_in_laststand\(\)/g, 'player.downed').replace(/wait ([^;]+);/g, 'yield $1;');
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const generator = match[1] === 'bank_sender';
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found.set(match[1], `function${generator ? '*' : ''} ${match[1]}(${match[2]}) { var ${[...locals].join(', ') || 'unused'}; ${body} }`);
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}
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return found;
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}
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function engine(game, options = {}) {
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const source = readFileSync(new URL(`${game}/scripts/tws_${game}_bank.gsc`, root), 'utf8');
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const excluded = new Set(['bank_chat_listener','bank_end_watcher','bank_guard','bank_say','bank_request']);
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const functionsByName = functions(source);
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const player = { guid: '18446744073709551615', sessionstate: 'playing', score: 3000, score_total: 4000, pers: {}, alive: true };
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const entry = { player, active: true };
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const saved = [], sent = [], messages = [], order = [];
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const c = vm.createContext({
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level: { bank_server: 'server', bank_url: 'https://test/api/bank', bank_token: 'ec_bank_private', bank_queue: [], bank_read: 0, bank_write: 0,
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bank_busy: false, bank_ended: false, telemetry_match: 'match', telemetry_started: true },
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isDefined: v => v !== undefined && v !== null, is_true: v => !!v, isAlive: p => p.alive,
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int: Math.trunc, getGuid: p => p.guid,
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jsonSerialize: a => JSON.stringify(Object.fromEntries(Object.entries(a))),
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bank_say: (_entry, message) => messages.push(message),
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telemetryNewMatch: () => 'request-1',
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bankStore: (_server, _url, body) => {
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const data = JSON.parse(body); order.push(data.decision);
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if (options.storageFailure === data.decision) return false;
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saved.splice(0, saved.length, data); return true;
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},
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bankRemove: () => { if (options.removeFailure) return false; saved.length = 0; return true; },
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httpPost: (url, data) => { order.push('http'); sent.push({ url, ...data }); return options.noHandle ? undefined : {}; },
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httpComplete: () => {
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options.during?.(c, entry);
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const action = sent.at(-1).url.split('/').at(-1);
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const state = action === 'commit' ? 'committed' : action === 'cancel' ? 'cancelled' : action === 'balance' ? 'balance' : options.state ?? 'prepared';
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const reply = { valid: true, state, request_id: action === 'balance' ? '' : options.wrongId ? 'wrong' : 'request-1', amount: options.amount ?? 2000, balance: 5000, code: options.code ?? 'ok' };
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return [JSON.stringify(reply), !options.timeout, '', options.missingDiagnostics ? undefined : { http_status: options.status ?? 200 }];
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},
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bankResponse: data => options.malformed ? { valid: false } : JSON.parse(data),
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print: () => {}, println: () => {}
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});
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vm.runInContext([...functionsByName].filter(([name]) => !excluded.has(name)).map(([, code]) => code).join('\n'), c);
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return { c, player, entry, saved, sent, messages, order, run: args => c.bank_transfer(entry,args) };
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}
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let checks = 0;
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for (const game of ['t5','t6']) {
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function test(name, fn) { try { fn(); checks++; } catch (cause) { throw new Error(`${game}: ${name}`, {cause}); } }
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test('strict positive integer syntax', () => {
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const {c} = engine(game);
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for (const bad of ['', '0', '-1', '1.5', '+1', '1e3', '1000001', 'all now']) assert.equal(c.bank_amount(bad),0);
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assert.equal(c.bank_amount('2000'),2000); assert.equal(c.bank_amount('ALL'),0); assert.equal(c.bank_amount('all'),-1);
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});
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test('deposit journals cancellation then commit before moving points', () => {
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const e=engine(game); e.run(['.d','2000']);
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assert.equal(e.player.score,1000); assert.equal(e.player.score_total,4000); assert.equal(e.player.pers.score,1000);
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assert.deepEqual(e.order,['cancel','http','commit']); assert.equal(e.saved[0].decision,'commit');
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assert.equal(e.saved[0].guid,e.player.guid);
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assert.equal(e.sent[0].headers.Authorization,'Bearer ec_bank_private');
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assert.equal(e.sent[0].timeout_ms,15000);
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});
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test('all captures deposit points and resolves withdrawal amount', () => {
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const e=engine(game,{amount:3000}); e.run(['.d','all']); assert.equal(e.player.score,0);
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assert.equal(JSON.parse(e.sent[0].body).amount,3000);
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const w=engine(game); w.run(['.w','all']); assert.equal(w.player.score,5000);
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assert.equal(JSON.parse(w.sent[0].body).amount,'all');
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});
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test('failure responses never change points and retain cancellation', () => {
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for (const options of [{timeout:true},{noHandle:true},{status:503},{status:401},{status:429},{missingDiagnostics:true},{malformed:true},{wrongId:true},{state:'rejected',code:'insufficient_balance'}]) {
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const e=engine(game,options); e.run(['.w','2000']); assert.equal(e.player.score,3000);
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assert.equal(e.saved[0].decision,'cancel'); assert.equal(e.c.level.bank_queue[0].decision,'cancel');
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}
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});
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test('storage failures never send unsaved work or move points', () => {
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for (const storageFailure of ['cancel','commit']) {
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const e=engine(game,{storageFailure}); e.run(['.d','2000']); assert.equal(e.player.score,3000);
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if(storageFailure==='cancel') assert.equal(e.sent.length,0); else assert.equal(e.saved[0].decision,'cancel');
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}
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});
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test('spending, death, disconnect, map end and point cap changes cancel prepared work', () => {
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for(const during of [(_c,e)=>{e.player.score=100;},(_c,e)=>{e.player.alive=false;},(_c,e)=>{e.active=false;},(c)=>{c.level.bank_ended=true;},(_c,e)=>{e.player.downed=true;}]) {
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const e=engine(game,{during}); e.run(['.d','2000']); assert.equal(e.saved[0].decision,'cancel');
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}
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const e=engine(game,{during:(_c,e)=>{e.player.score=999999;}}); e.run(['.w','2000']); assert.equal(e.saved[0].decision,'cancel'); assert.equal(e.player.score,999999);
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});
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test('invalid requests and unavailable match fail before HTTP', () => {
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for(const args of [['.d'],['.w','1000001'],['.d','4000'],['.b','2000'],['.w','1000000']]) {
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const e=engine(game); e.run(args); assert.equal(e.sent.length,0); assert.equal(e.player.score,3000);
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}
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const e=engine(game); e.c.level.telemetry_match=undefined; e.run(['.d','all']); assert.equal(e.sent.length,0);
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});
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test('balance reads do not journal or alter points', () => {
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const e=engine(game); e.run(['.b']); assert.equal(e.saved.length,0); assert.equal(e.player.score,3000); assert.match(e.messages[0],/5000/);
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});
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test('recovered settlements cannot reapply points and retry cleanup safely', () => {
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const e=engine(game); e.run(['.w','2000']); const score=e.player.score;
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const sender=e.c.bank_sender(); sender.next(); assert.equal(e.saved.length,0); assert.equal(e.player.score,score);
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const failed=engine(game,{removeFailure:true}); failed.run(['.d','2000']); const gen=failed.c.bank_sender(); gen.next(); gen.next();
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assert.equal(failed.player.score,1000); assert.equal(failed.saved[0].decision,'commit');
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});
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test('conflicting settlement states retain their journal', () => {
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const {c}=engine(game);
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assert(!c.bank_resolved('commit','cancelled')); assert(!c.bank_resolved('cancel','committed'));
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assert(c.bank_resolved('cancel','rejected')); assert(c.bank_resolved('commit','committed'));
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});
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}
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console.log(`PASS ${checks} bank script fixtures (T5 and T6); live VM checks still required.`);
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