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Hormiguero

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HormigueroArrastrá para girarlo
// «Hormiguero» · gpt-6-sol (medium)
// An anthill: a cone-shaped mound of brown dirt with a dark hole on top and a few tiny black ants on the side.

const cx = 24, cy = 24;
const dirt = ["#8f552f", "#a96535", "#bc7940", "#cc8b4a"];
const darkDirt = "#63391f";

// A broad, gently uneven cone with a chunky storybook silhouette.
for (let z = 0; z <= 28; z++) {
  const baseRadius = 19.3 - 0.55 * z;
  for (let x = 4; x <= 44; x++) {
    for (let y = 4; y <= 44; y++) {
      const dx = x - cx, dy = y - cy;
      const angle = Math.atan2(dy, dx);
      const uneven = 0.42 * Math.sin(angle * 7 + z * 0.19)
                    + 0.27 * Math.sin(angle * 11 - z * 0.13);
      const distance = Math.sqrt(dx * dx + dy * dy);
      if (distance > baseRadius + uneven) continue;

      // Leave a deep opening at the summit.
      if (z >= 21 && distance < 2.8) continue;

      const n = rand();
      let color = z < 4 ? dirt[n < 0.38 ? 0 : 1]
                : n < 0.13 ? dirt[0]
                : n < 0.57 ? dirt[1]
                : n < 0.88 ? dirt[2] : dirt[3];
      if (z > 20 && n > 0.32) color = dirt[3];
      set(x, y, z, color);
    }
  }
}

// Dark, recessed interior and a sunlit lip.
for (let x = 19; x <= 29; x++) {
  for (let y = 19; y <= 29; y++) {
    const d = Math.hypot(x - cx, y - cy);
    if (d < 2.8) {
      set(x, y, 19, "#34241d");
      set(x, y, 20, d < 1.9 ? "#241d1b" : darkDirt);
      if (d > 2.1) set(x, y, 21, "#51301f");
    } else if (d < 4.5) {
      for (let z = 26; z <= 28; z++) {
        if (get(x, y, z) && !get(x, y, z + 1))
          set(x, y, z, rand() < 0.55 ? "#dc9b54" : "#c78344");
      }
    }
  }
}

// A few pale grains and little earthen pebbles on the visible slope.
for (let i = 0; i < 65; i++) {
  const x = 8 + Math.floor(rand() * 33);
  const z = 2 + Math.floor(rand() * 19);
  for (let y = 5; y <= 24; y++) {
    if (get(x, y, z)) {
      if (rand() < 0.68) set(x, y - 1, z, rand() < 0.5 ? "#d99550" : "#76502e");
      break;
    }
  }
}

// Tiny grass shoots around the foot of the mound.
for (const [x, y] of [
  [6, 23], [10, 12], [16, 7], [34, 8], [41, 19],
  [40, 34], [30, 42], [14, 39], [8, 32]
]) {
  set(x, y, 0, "#509a43");
  set(x, y, 1, "#60b64e");
  set(x, y, 2, "#82cb60");
  set(x - 1, y, 1, "#77bf57");
  set(x + 1, y, 1, "#4da047");
}

// Put each ant just in front of the mound's visible surface.
function frontY(x, z) {
  for (let y = 4; y <= 24; y++) if (get(x, y, z)) return y - 1;
  return 12;
}
function ant(x, z) {
  for (let dx = -2; dx <= 2; dx++) {
    const ax = x + dx;
    const y = frontY(ax, z);
    set(ax, y, z, dx === -2 || dx === 2 ? "#302b27" : "#1e2425");
    if (dx === -1 || dx === 1) set(ax, y - 1, z, "#252a29");
    if (dx === -2 || dx === 0 || dx === 2)
      set(ax, frontY(ax, z - 1) - 1, z - 1, "#38312b");
  }
  // Two bent antennae above the head.
  for (const ax of [x + 1, x + 2]) {
    set(ax, frontY(ax, z + 1) - 1, z + 1, "#252a29");
  }
  set(x + 2, frontY(x + 2, z + 2) - 1, z + 2, "#252a29");
}
ant(14, 7);
ant(30, 11);
ant(21, 16);
ant(35, 5);