From 84880b2551f3120a3616a640a93fc0b91707d883 Mon Sep 17 00:00:00 2001
From: Lynn <lynn@foldr.moe>
Date: Fri, 7 Jan 2022 17:13:39 +0100
Subject: [PATCH] Add ?seed= support

---
 src/Game.tsx    | 12 +++++++++---
 src/common.json |  1 -
 src/util.ts     | 21 +++++++++++++++++++--
 3 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/src/Game.tsx b/src/Game.tsx
index 1687c83..b7b319e 100644
--- a/src/Game.tsx
+++ b/src/Game.tsx
@@ -4,7 +4,7 @@ import dictionary from "./dictionary.json";
 import { Clue, clue } from "./clue";
 import { Keyboard } from "./Keyboard";
 import common from "./common.json";
-import { dictionarySet, pick } from "./util";
+import { dictionarySet, pick, resetRng } from "./util";
 import { names } from "./names";
 
 enum GameState {
@@ -33,7 +33,7 @@ function Game(props: GameProps) {
   const [currentGuess, setCurrentGuess] = useState<string>("");
   const [wordLength, setWordLength] = useState(5);
   const [hint, setHint] = useState<string>(`Make your first guess!`);
-  const [target, setTarget] = useState(randomTarget(wordLength));
+  const [target, setTarget] = useState(() => randomTarget(wordLength));
 
   const reset = () => {
     setTarget(randomTarget(wordLength));
@@ -129,13 +129,19 @@ function Game(props: GameProps) {
           min="4"
           max="11"
           id="wordLength"
-          disabled={guesses.length > 0 || currentGuess !== ""}
+          disabled={
+            gameState === GameState.Playing &&
+            (guesses.length > 0 || currentGuess !== "")
+          }
           value={wordLength}
           onChange={(e) => {
             const length = Number(e.target.value);
+            resetRng();
+            setGuesses([]);
             setTarget(randomTarget(length));
             setWordLength(length);
             setHint(`${length} letters`);
+            (document.activeElement as HTMLElement)?.blur();
           }}
         ></input>
         <button
diff --git a/src/common.json b/src/common.json
index 3067cd9..5c0eea8 100644
--- a/src/common.json
+++ b/src/common.json
@@ -13277,7 +13277,6 @@
   "deleted",
   "ignition",
   "rehearsal",
-  "ness",
   "pediatric",
   "helmet",
   "anthology",
diff --git a/src/util.ts b/src/util.ts
index d063a52..f593af9 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -2,6 +2,23 @@ import dictionary from "./dictionary.json";
 
 export const dictionarySet: Set<string> = new Set(dictionary);
 
-export function pick<T>(array: Array<T>): T {
-  return array[Math.floor(array.length * Math.random())];
+function mulberry32(a: number) {
+  return function () {
+    var t = (a += 0x6d2b79f5);
+    t = Math.imul(t ^ (t >>> 15), t | 1);
+    t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
+    return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
+  };
+}
+
+const seed = Number(new URLSearchParams(window.location.search).get("seed"));
+const makeRandom = () => (seed ? mulberry32(seed) : () => Math.random());
+let random = makeRandom();
+
+export function resetRng(): void {
+  random = makeRandom();
+}
+
+export function pick<T>(array: Array<T>): T {
+  return array[Math.floor(array.length * random())];
 }