import { WORLD_SCALE } from '../../config.js';

// Hand-tuned profile: flat approach -> steep valley drop -> steep climb out ->
// a long stretch of tight, fast bumps that punish sloppy lean control.
function buildPoints() {
  const step = 60 * WORLD_SCALE;
  const points = [];
  for (let x = -200 * WORLD_SCALE; x <= 3900 * WORLD_SCALE; x += step) {
    let y;
    if (x < 1200 * WORLD_SCALE) {
      y = 420 * WORLD_SCALE + Math.sin(x / (500 * WORLD_SCALE)) * 10 * WORLD_SCALE;
    } else if (x < 1500 * WORLD_SCALE) {
      y = 420 * WORLD_SCALE + 220 * WORLD_SCALE * ((x - 1200 * WORLD_SCALE) / (300 * WORLD_SCALE));
    } else if (x < 1650 * WORLD_SCALE) {
      y = 640 * WORLD_SCALE;
    } else if (x < 1950 * WORLD_SCALE) {
      y = 640 * WORLD_SCALE - 260 * WORLD_SCALE * ((x - 1650 * WORLD_SCALE) / (300 * WORLD_SCALE));
    } else if (x < 3650 * WORLD_SCALE) {
      y = 380 * WORLD_SCALE + Math.sin(x / (150 * WORLD_SCALE)) * 45 * WORLD_SCALE;
    } else {
      y = 380 * WORLD_SCALE;
    }
    points.push({ x, y: Math.round(y) });
  }
  return points;
}

const END_X = 3900 * WORLD_SCALE;

export default {
  id: 'level03',
  name: 'Tight Squeeze',
  description: 'A steep valley and a long run of sharp bumps - lean early, lean often.',
  kidsAboard: 4,
  startPosition: { x: 100 * WORLD_SCALE, y: 350 * WORLD_SCALE },
  startAngle: 0,
  terrain: [{ points: buildPoints() }],
  obstacles: [],
  goal: { x: END_X - 120 * WORLD_SCALE, y: 260 * WORLD_SCALE, width: 140 * WORLD_SCALE, height: 400 * WORLD_SCALE },
  cameraBounds: { x: -300 * WORLD_SCALE, y: 0, width: END_X + 700 * WORLD_SCALE, height: 1000 * WORLD_SCALE },
};