Zork CLI

zork1.js

@@ -0,0 +1,21 @@
+const VM = require('./lib/vm')
+const fs = require('fs')
+const data = fs.readFileSync('./games/ZORK1.DAT')
+const saveFile = './zork1.sav'
+
+const main = async () => {
+    let state
+    if (fs.existsSync(saveFile)) {
+        state = JSON.parse(fs.readFileSync(saveFile, 'utf8'))
+    } else {
+        state = await VM.play(data)
+    }
+    while (state) {
+        fs.writeFileSync(saveFile, JSON.stringify(state), 'utf8')
+        if (typeof state.output === 'string') process.stdout.write(state.output)
+        const text = (await new Promise(resolve => process.stdin.once('data', resolve))).toString()
+        state = await VM.play(data, state.save, text.toString().trim())
+    }
+}
+
+main().catch(console.error)