Your game, ready to go

import {
  makeGame,
  drawTrail,
  movePlayer,
  playerAtStart,
  addCoins,
  platforms,
  trailWidth,
} from "../trail.js"
import { animateHero, playSound, coinFeedback, mushroomBump } from "../feedback.js"
import { readLevel, saveLevel, clearSave } from "../save.js"
import type { LessonOptions } from "../types.js"

export async function mount(canvas: HTMLCanvasElement, options: LessonOptions) {
  const game = await makeGame(canvas, options)
  function enterLevel(level: 0 | 1): void {
    game.scene((scene) => {
      const terrain = platforms.map((box, index) => ({
        ...box,
        y: box.y - (level === 1 && index > 0 ? 20 : 0),
      }))
      drawTrail(scene, terrain)
      const player = playerAtStart()
      const hero = scene.sprite("hero", {
        bind: player,
        anchor: "center",
        width: 64,
        height: 64,
      })
      const coins = addCoins(scene, terrain)
      let elapsed = 0
      let hurtUntil = 0
      let won = false
      scene.camera.follow(player, {
        bounds: { x: 0, y: 0, width: trailWidth, height: 360 },
        speed: options.cameraSpeed,
      })
      scene.input.onPress("pause", () => {
        game.pause()
        options.status("Paused. Choose Resume to keep walking.")
      })
      scene.update((dt) => {
        if (won) return
        elapsed += dt
        const direction = scene.input.axis("left", "right")
        if (movePlayer(player, direction, scene.input.pressed("jump"), dt, options, terrain))
          playSound(scene, options, "jump")
        animateHero(scene, hero, player, direction, elapsed, options)
        hurtUntil = mushroomBump(scene, hero, player, options, elapsed, hurtUntil)
        if (coins.collect(player)) {
          playSound(scene, options, "gem")
          coinFeedback(scene, player, options)
        }
        if (!coins.finished(player)) return
        won = true
        if (level === 0) {
          const saved = saveLevel(1)
          options.status(
            saved
              ? "First trail complete. Progress saved. Next trail in a moment…"
              : "First trail complete. Storage unavailable; next trail still works.",
          )
          scene.wait(1.2, () => enterLevel(1))
        } else
          options.status(
            "Both trails complete. You made a whole game. Start a new save to play again.",
          )
      })
      options.status(
        `Trail ${level + 1} of 2. Collect four coins and reach the flag. Escape pauses.`,
      )
      options.ready(scene)
    })
  }
  enterLevel(readLevel())
  return {
    game,
    restart: () => game.restart(),
    newGame: () => {
      clearSave()
      enterLevel(0)
    },
  }
}