feat(helpers): save level data to local storage

src/helpers/level.ts

@@ -1,4 +1,4 @@
-import { Level, Scene, Sprite } from '../types'
+import { Data, Level, Scene, Sprite } from '../types'
 
 /**
  * Gets level by number.
@@ -40,10 +40,12 @@ export function initLevel(level: number, cleanup?: () => void) {
   loadSprite(Sprite.exit, 'sprites/door.png')
 
   onCollide(Sprite.player, Sprite.exit, () => {
-    go(Scene.game, level + 1)
-
     if (typeof cleanup === 'function') {
       cleanup()
     }
+
+    const nextLevel = level + 1
+    go(Scene.game, nextLevel)
+    setData(Data.level, nextLevel)
   })
 }

src/index.ts

@@ -1,9 +1,12 @@
 import './style.css'
 import './scenes'
 
-import { Scene } from './types'
+import { Data, Scene } from './types'
 
-const level = Number(new URLSearchParams(location.search).get('level')) || 0
+const level =
+  Number(
+    new URLSearchParams(location.search).get('level') || getData(Data.level),
+  ) || 0
 
 go(Scene.game, level)
 

src/types/data.ts

@@ -0,0 +1,3 @@
+export enum Data {
+  level = 'level',
+}

src/types/index.ts

@@ -1,3 +1,4 @@
+export * from './data'
 export * from './level'
 export * from './scene'
 export * from './sprite'