Pid resets to 1 when installing or destroying a BitNode.

src/Netscript/Pid.ts

@@ -0,0 +1,42 @@
+import { workerScripts } from "./WorkerScripts";
+
+let pidCounter = 1;
+
+/**
+ * Find and return the next availble PID for a script
+ */
+export function generateNextPid(): number {
+    let tempCounter = pidCounter;
+
+    // Cap the number of search iterations at some arbitrary value to avoid
+    // infinite loops. We'll assume that players wont have 1mil+ running scripts
+    let found = false;
+    for (let i = 0; i < 1e6;) {
+        if (!workerScripts.has(tempCounter + i)) {
+            found = true;
+            tempCounter = tempCounter + i;
+            break;
+        }
+
+        if (i === Number.MAX_SAFE_INTEGER - 1) {
+            i = 1;
+        } else {
+            ++i;
+        }
+    }
+
+    if (found) {
+        pidCounter = tempCounter + 1;
+        if (pidCounter >= Number.MAX_SAFE_INTEGER) {
+            pidCounter = 1;
+        }
+
+        return tempCounter;
+    } else {
+        return -1;
+    }
+}
+
+export function resetPidCounter(): void {
+    pidCounter = 1;
+}