(() => {
  const { Bodies } = Matter;
  const scenes = (window.PhysilinksSceneDefs =
    window.PhysilinksSceneDefs || []);

  scenes.push({
    id: "relax",
    name: "Relax drift",
    config: {
      gravity: 0.08,
      spawnIntervalMs: 850,
      spawnBatchMin: 3,
      spawnBatchMax: 5,
      spawnFrom: "bottom",
      autoSpawn: true,
      minChain: 2,
      palette: ["#38bdf8", "#f472b6", "#fbbf24", "#22c55e", "#a855f7"],
      ballRadius: 20,
      blobBalls: true,
      noGameOver: true,
      winCondition: {
        type: "timer",
        durationSec: 120,
        onWin: { setGravity: -0.4, swirlBalls: true },
      },
      link: {
        stiffness: 0.6,
        lengthScale: 1.1,
        damping: 0.1,
        lineWidth: 3,
        rope: true,
        renderType: "line",
        maxLengthMultiplier: 3.8,
      },
    },
    createBodies: (w, h) => {
      const wallThickness = Math.max(30, w * 0.04);
      const wallHeight = h + wallThickness * 2;
      const floorHeight = Math.max(40, h * 0.08);
      const bumperRadius = Math.max(30, Math.min(w, h) * 0.04);
      return [
        Bodies.rectangle(
          w / 2,
          h + floorHeight / 2,
          w + wallThickness * 2,
          floorHeight,
          {
            isStatic: true,
            restitution: 0.8,
            render: { fillStyle: "#0ea5e9", strokeStyle: "#0ea5e9" },
          },
        ),
        Bodies.rectangle(
          w / 2,
          -wallThickness / 2,
          w + wallThickness * 2,
          wallThickness,
          {
            isStatic: true,
            render: { fillStyle: "#0ea5e9", strokeStyle: "#0ea5e9" },
          },
        ),
        Bodies.rectangle(-wallThickness / 2, h / 2, wallThickness, wallHeight, {
          isStatic: true,
          render: { fillStyle: "#7c3aed", strokeStyle: "#7c3aed" },
        }),
        Bodies.rectangle(
          w + wallThickness / 2,
          h / 2,
          wallThickness,
          wallHeight,
          {
            isStatic: true,
            render: { fillStyle: "#7c3aed", strokeStyle: "#7c3aed" },
          },
        ),
        Bodies.circle(w * 0.35, h * 0.35, bumperRadius, {
          isStatic: true,
          restitution: 1.05,
          render: { fillStyle: "#fbbf24", strokeStyle: "#fbbf24" },
        }),
        Bodies.circle(w * 0.65, h * 0.55, bumperRadius * 0.9, {
          isStatic: true,
          restitution: 1.05,
          render: { fillStyle: "#22c55e", strokeStyle: "#22c55e" },
        }),
      ];
    },
  });
})();