Function spec

packages/webapp/components/world/engine/world.js:1108–1135

(level)

/* ---- spec(level): every number the builder needs, derived from one knob ---- */
function spec(level){
  const t=(level-1)/11;
  const radius=snapR(2.4+11.6*Math.pow(t,1.05));   // 2.7 → 14.4 on the ring grid
  return {
    level, radius,
    rings:  Math.round(radius/RING_W),
    /* UNLOCK GATES, not counts. How many of a family exist is decided by how
       much of its lattice falls inside the coast and under the fill threshold —
       and both of those only ever open further. */
    cottages: level<2?0:1,
    towers:   level<6?0:Math.round((level-4)/2),   // capped per realm in build()
    halls:    level<6?0:level<10?1:2,
    trees:    level<2?0:1,
    lamps:    level<2?0:1,
    gardens:  level<4?0:1,
    fill:     clamp(0.58+level*0.038,0.58,1),
    pond:     level>=5,
    falls:    level>=7,
    expand:   level>=9,
    undercroft: level<10?0:Math.round(radius*1.1),
    great:    level>=11,
    arch:     level>=3,
    signature: level>=3,
    banners:  level>=3,
    life:     level>=6?Math.min(3+level,14):0,
    motes:    3+level*3,
  };
}

/* --------------------------------------------------------------- terraces */
/* One ring of land. Geometry depends only on j — never on the island's current