feat(levels): add level 8

src/levels/8.ts

@@ -0,0 +1,49 @@
+import { addCursorKeys, initLevel } from '../helpers'
+import { Sprite } from '../types'
+
+export const level = 8
+export const title = 'Variables'
+
+function generatePassword() {
+  const year = new Date().getFullYear()
+  return (year + level) * 31337
+}
+
+export function prescript() {
+  initLevel(level)
+  loadSprite(Sprite.key, 'sprites/key.png')
+
+  addCursorKeys(
+    add([sprite(Sprite.player), pos(100, 100), area(), Sprite.player]),
+  )
+
+  const password = generatePassword()
+  add([sprite(Sprite.key), pos(center()), area(), Sprite.key, { password }])
+
+  onCollide(Sprite.key, Sprite.player, (key) => {
+    if (key.password === password) {
+      key.destroy()
+      add([sprite(Sprite.exit), pos(500, 500), area(), Sprite.exit])
+    } else {
+      debug.log('Incorrect password')
+    }
+  })
+
+  add([text("What's the password?")])
+}
+
+export const script = `
+/**
+ * Variables store data
+ * 'const' cannot be reassigned, whereas 'let' can be reassigned
+ */
+
+const key = get('key')[0]
+
+// password = (current_year + current_level_number) * 31337
+let password
+
+key.password = password
+`
+
+export function postscript() {}

src/types/sprite.ts

@@ -1,5 +1,6 @@
 export enum Sprite {
   exit = 'exit',
+  key = 'key',
   player = 'player',
   wall = 'wall',
 }