Unify error handling

src/Casino/Game.tsx

@@ -0,0 +1,31 @@
+import * as React from "react";
+import { IPlayer } from "../PersonObjects/IPlayer";
+import { dialogBoxCreate } from "../ui/React/DialogBox";
+
+const gainLimit = 10e9;
+
+export function win(p: IPlayer, n: number): void {
+  p.gainMoney(n, "casino");
+}
+
+export function reachedLimit(p: IPlayer): boolean {
+  const reached = p.getCasinoWinnings() > gainLimit;
+  if (reached) {
+    dialogBoxCreate("Alright cheater get out of here. You're not allowed here anymore.");
+  }
+  return reached;
+}
+
+export class Game<T, U> extends React.Component<T, U> {
+  win(p: IPlayer, n: number): void {
+    p.gainMoney(n, "casino");
+  }
+
+  reachedLimit(p: IPlayer): boolean {
+    const reached = p.getCasinoWinnings() > gainLimit;
+    if (reached) {
+      dialogBoxCreate("Alright cheater get out of here. You're not allowed here anymore.");
+    }
+    return reached;
+  }
+}

src/Locations/LocationsHelpers.tsx

@@ -0,0 +1,40 @@
+/**
+ * Location and traveling-related helper functions.
+ * Mostly used for UI
+ */
+import { SpecialServers } from "../Server/data/SpecialServers";
+import { CONSTANTS } from "../Constants";
+
+import { IPlayer } from "../PersonObjects/IPlayer";
+import { GetServer } from "../Server/AllServers";
+
+import { dialogBoxCreate } from "../ui/React/DialogBox";
+
+/**
+ * Attempt to purchase a TOR router
+ * @param {IPlayer} p - Player object
+ */
+export function purchaseTorRouter(p: IPlayer): void {
+  if (p.hasTorRouter()) {
+    dialogBoxCreate(`You already have a TOR Router!`);
+    return;
+  }
+  if (!p.canAfford(CONSTANTS.TorRouterCost)) {
+    dialogBoxCreate("You cannot afford to purchase the TOR router!");
+    return;
+  }
+  p.loseMoney(CONSTANTS.TorRouterCost, "other");
+
+  const darkweb = GetServer(SpecialServers.DarkWeb);
+  if (!darkweb) {
+    throw new Error("Dark web is not a server.");
+  }
+
+  p.getHomeComputer().serversOnNetwork.push(darkweb.hostname);
+  darkweb.serversOnNetwork.push(p.getHomeComputer().hostname);
+  dialogBoxCreate(
+    "You have purchased a TOR router!\n" +
+      "You now have access to the dark web from your home computer.\n" +
+      "Use the scan/scan-analyze commands to search for the dark web connection.",
+  );
+}