Web Dev Solutions

if (window.IS_DEV) {
  const source = new EventSource('/esbuild');
  source.addEventListener('change', () => location.reload());
}

const xmlns = 'http://www.w3.org/2000/svg';
const svg = document.querySelector('svg');

const hex = {
  inradius: 8.66,
  circumradius: 10,
}

const horzSpacing = hex.inradius;
const vertSpacing = hex.circumradius * 3 / 2;


function toKey(q, r, s) {
  return `${[q, r, s]}`;
}

function sameSigns(a, b) {
  return a > -1 && b > -1 || a < 0 && b < 0;
}

function getNeighbors(coords) {
  const [q, r, s] = coords.split(',').map(n => +n);

  return [
    toKey(q + 1, r, s - 1),
    toKey(q - 1, r, s + 1),
    toKey(q + 1, r - 1, s),
    toKey(q - 1, r + 1, s),
    toKey(q, r + 1, s - 1),
    toKey(q, r - 1, s + 1),
  ]
}

function generateRadialCoords(l, { q, r, s }, radius) {
  const origin = toKey(q, r, s);
  const list = new Map(l);
  const neighbors = new Set();

  let next = new Set();

  list.set(origin);
  next.add(origin);

  for (let i = 0; i < radius; i++) {
    next.forEach(coords => {
      getNeighbors(coords).forEach(n => {
        list.set(n, null);
        neighbors.add(n);
      });
    });

    next = new Set(neighbors);
    neighbors.clear();
  }

  return list;
}

function generateRadialCoordsRect({ rows, columns, odd = false, equal = true } = {}, { q = 0, r = 0, s = 0 } = {}) {
  const list = new Set();

  for (let row = 0; row < rows; row++) {
    const alternating = row % 2;
    const dr = row;

    for (let col = 0; col < columns; col++) {
      let dq = -(alternating + row) / 2 + alternating - col;
      let ds = -(row + alternating) / 2 + col;

      if (odd) {
        dq = dq - alternating;
        ds = ds + alternating;
      }

      list.add(toKey(q + dq, r + dr, s + ds));
    }

    if (!equal) {
      if ((odd && !(row % 2)) || (!odd && row % 2)) {
        let dq = -(alternating + row) / 2 + alternating - columns;
        let ds = -(row + alternating) / 2 + columns;

        if (odd) {
          dq = dq - alternating;
          ds = ds + alternating;
        }

        list.add(toKey(q + dq, r + dr, s + ds));
      }
    }
  }

  return list;
}

function drawHexes(el, list) {
  for ([key, v] of list) {
    const [q, r, s] = key.split(',').map(n => +n);

    let x;

    if (q === s)
      x = 0;
    else if (sameSigns(q, s))
      x = Math.abs(q - s);
    else
      x = Math.abs(q) + Math.abs(s);

    x = (q > s ? -1 : 1) * x * horzSpacing;
    y = r * vertSpacing;

    const g = document.createElementNS(xmlns, 'g');
    g.setAttributeNS(null, 'transform', `translate(${x}, ${y})`);

    const use = document.createElementNS(xmlns, 'use');
    use.setAttributeNS(null, 'href', '#hex');

    const qText = document.createElementNS(xmlns, 'text');
    qText.textContent = q;
    qText.setAttributeNS(null, 'x', -3);
    qText.setAttributeNS(null, 'y', -3);

    const rText = document.createElementNS(xmlns, 'text');
    rText.textContent = r;
    rText.setAttributeNS(null, 'x', 5);
    rText.setAttributeNS(null, 'y', 1.5);

    const sText = document.createElementNS(xmlns, 'text');
    sText.textContent = s;
    sText.setAttributeNS(null, 'x', -3);
    sText.setAttributeNS(null, 'y', 5);

    const vText = document.createElementNS(xmlns, 'text');
    vText.textContent = v;
    vText.style.fill = 'red';
    vText.setAttributeNS(null, 'y', 1);
    vText.setAttributeNS(null, 'x', -2);

    [use, qText, rText, sText, vText].forEach(el => g.appendChild(el));
    el.appendChild(g);
  }
}

function translateRadialCoords({ q, r, s }, direction, distance) {
  return {
    q: q + direction.q * distance,
    r: r + direction.r * distance,
    s: s + direction.s * distance
  };
}

// const grid = generateRadialCoordsRect({ rows: 26, columns: 33 }, { q: 22, r: -12, s: -10 });

const grid = generateRadialCoordsRect({ rows: 52, columns: 33 }, translateRadialCoords({ q: 22, r: -12, s: -10 }, { q: 1, r: -2, s: 1 }, 7));

const building1 = generateRadialCoordsRect({ rows: 5, columns: 3, equal: false }, { q: 7, r: -4, s: -3 });
const building2 = generateRadialCoordsRect({ rows: 4, columns: 3, odd: true }, { q: 0, r: -4, s: 4 });
const building3 = generateRadialCoords(new Map(), { q: -1, r: 2, s: -1 }, 1);

const buildingData = [
  [{ rows: 4, columns: 8, equal: false }, { q: 18, r: -8, s: -10 }],
  [{ rows: 8, columns: 2, equal: false }, { q: 9, r: -10, s: 1 }],
  [{ rows: 6, columns: 13, odd: true }, { q: 2, r: -8, s: 6 }],
  [{ rows: 1, columns: 10 }, { q: -1, r: -9, s: 10 }],
  [{ rows: 1, columns: 2 }, { q: -1, r: -2, s: 3 }],
  [{ rows: 1, columns: 6 }, { q: -8, r: -2, s: 10 }],
  [{ rows: 8, columns: 4, odd: true }, { q: -5, r: 3, s: 2 }],
  [{ rows: 6, columns: 3, equal: false }, { q: -12, r: 3, s: 9 }],
].map(([size, start]) => [size, translateRadialCoords(start, { q: 1, r: -2, s: 1 }, 7)]);

const buildingCoords = buildingData.map(([size, start]) => generateRadialCoordsRect(size, start));

// const buildingCoords = [
//   generateRadialCoordsRect({ rows: 4, columns: 8, equal: false }, { q: 18, r: -8, s: -10 }),
//   generateRadialCoordsRect({ rows: 8, columns: 2, equal: false }, { q: 9, r: -10, s: 1 }),
//   generateRadialCoordsRect({ rows: 6, columns: 13, odd: true }, { q: 2, r: -8, s: 6 }),
//   generateRadialCoordsRect({ rows: 1, columns: 10 }, { q: -1, r: -9, s: 10 }),
//   generateRadialCoordsRect({ rows: 1, columns: 2 }, { q: -1, r: -2, s: 3 }),
//   generateRadialCoordsRect({ rows: 1, columns: 6 }, { q: -8, r: -2, s: 10 }),
//   // generateRadialCoordsRect({ rows: 8, columns: 4, odd: true }, { q: 4, r: 3, s: -7 }),
//   generateRadialCoordsRect({ rows: 8, columns: 4, odd: true }, { q: -5, r: 3, s: 2 }),
//   generateRadialCoordsRect({ rows: 6, columns: 3, equal: false }, { q: -12, r: 3, s: 9 }),

//   // hex building
//   // generateRadialCoordsRect({ rows: 8, columns: 4 }, { q: 10, r: 3, s: -13 }),
//   // generateRadialCoordsRect({ rows: 3, columns: 1 }, { q: 9, r: 7, s: -16 }),
//   // generateRadialCoordsRect({ rows: 5, columns: 1, odd: true }, { q: 5, r: 6, s: -11 }),
// ]

buildingCoords.forEach(building => building.forEach(coords => grid.delete(coords)));

// building2.forEach(coords => grid.delete(coords));
// building3.forEach(coords => grid.delete(coords));

// drawHexes(svg, generateRadialCoords(new Map(), { q: 0, r: 0, s: 0 }, 16));

// const rectEven = generateRadialCoordsRect({ rows: 2, columns: 2 }, { q: 9, r: -5, s: -4 });
// const rectOdd = generateRadialCoordsRect({ rows: 2, columns: 2, odd: true }, { q: 8, r: -2, s: -6 });
// const rectEvenUnevenCols = generateRadialCoordsRect({ rows: 2, columns: 1, equal: false}, { q: 6, r: 1, s: -7 });
// const rectOddUnevenCols = generateRadialCoordsRect({ rows: 2, columns: 1, odd: true, equal: false}, { q: 5, r: 4, s: -9 });

// drawHexes(svg, rectEven);
// drawHexes(svg, rectOdd);
// drawHexes(svg, rectEvenUnevenCols);
// drawHexes(svg, rectOddUnevenCols);

// drawHexes(svg, generateRadialCoordsRect({ rows: 7, columns: 6, odd: true, equal: false }, { q: 5, r: -5, s: 0 }));

// const buildings = document.createElementNS(xmlns, 'g');
// buildings.classList.add('buildings');

// const bldElevationBasement = document.createElementNS(xmlns, 'g');
// bldElevationBasement.classList.add('elevation-basement');
// buildingCoords.forEach(building => drawHexes(bldElevationBasement, building));

// const bldElevation1 = document.createElementNS(xmlns, 'g');
// bldElevation1.classList.add('elevation-1');
// buildingCoords.forEach(building => drawHexes(bldElevation1, building));

// const bldElevation2 = document.createElementNS(xmlns, 'g');
// bldElevation2.classList.add('elevation-2');
// buildingCoords.forEach(building => drawHexes(bldElevation2, building));

const elevation1 = document.createElementNS(xmlns, 'g');
elevation1.classList.add('elevation-1');

// buildings.appendChild(bldElevationBasement);
// buildings.appendChild(bldElevation1);
// buildings.appendChild(bldElevation2);

const buildingBlah = svg.querySelector('#building2');

const bld2grid = document.createElementNS(xmlns, 'g');

const bld2hexes = [
  generateRadialCoordsRect({ rows: 9, columns: 4, odd: true, equal: false }, { q: 11, r: 3, s: -14 }),
  generateRadialCoordsRect({ rows: 5, columns: 1 }, { q: 10, r: 6, s: -16 }),
  generateRadialCoordsRect({ rows: 5, columns: 1, odd: true }, { q: 5, r: 6, s: -11 }),
]

// bld2hexes.forEach(list => drawHexes(bld2grid, list));

const bld2elvBasement = bld2grid.cloneNode(true);
bld2elvBasement.classList.add('elevation-basement');
buildingBlah.appendChild(bld2elvBasement);

const bld2elv1 = bld2grid.cloneNode(true);
bld2elv1.classList.add('elevation-1');
buildingBlah.appendChild(bld2elv1);

const bld2elv2 = bld2grid.cloneNode(true);
bld2elv2.classList.add('elevation-2');
buildingBlah.appendChild(bld2elv2);

const bld2elvRoof = bld2grid.cloneNode(true);
bld2elvRoof.classList.add('elevation-roof');
buildingBlah.appendChild(bld2elvRoof);


const bld1 = svg.querySelector('#building1');

const bld1grid = document.createElementNS(xmlns, 'g');
const bld1hexes = generateRadialCoordsRect({ rows: 9, columns: 4, odd: true, equal: false }, { q: 4, r: 3, s: -7 });
// drawHexes(bld1grid, bld1hexes);

const bld1elv1 = bld1grid.cloneNode(true);
bld1elv1.classList.add('elevation-1');
bld1.appendChild(bld1elv1);

bld1hexes.forEach(coords => grid.delete(coords))
bld2hexes.forEach(list => list.forEach(coords => grid.delete(coords)));

// drawHexes(elevation1, grid);

function generateRadialCoords2(l, { q, r, s }) {
  const origin = toKey(q, r, s);
  const list = new Map(l);
  let level = 0;

  list.set(origin, level);
  let queue = [origin];

  const top = 5;
  const bottom = 5;

  const left = 1;
  const right = 1;

  while (queue.length > 0) {
    level++;
    const v = queue.shift();
    getNeighbors(v).forEach(w => {
      const [wq, wr, ws] = w.split(',').map(n => +n);
      const rDist = Math.abs(wr - r);
      const dr = (rDist + rDist % 2) / 2;

      if ([
        !list.has(w),
        wr < bottom + r && wr > -top + r,
        wq > -right + q - dr && wq < left + q + dr,
        ws > -left + s - dr && ws < right + s + dr,
      ].every(v => v)) {
        list.set(w, dr);
        queue.push(w);
      }
    });
  }

  return list;
}

const elevation2 = document.createElementNS(xmlns, 'g');
elevation2.classList.add('elevation-2');

const list = generateRadialCoords2(new Map(), { q: 0, r: 0, s: 0 });
// const list = generateRadialCoords2(new Map(), { q: -5, r: 5, s: 0 });

// q [3, -3]
// s [-3, 3]

// const list = generateRadialCoords2(new Map(), { q: -2, r: 0, s: 2 });
// q [1, -5]
// s [-1, 5]

// const list = generateRadialCoords2(new Map(), { q: -1, r: 2, s: -1 });
// q [2, -4]
// s [-4, 2]

// const list = generateRadialCoords2(new Map(), { q: -5, r: 4, s: 1 });
// q [-2, -8]
// s [-2, 4]

drawHexes(elevation2, generateRadialCoords(new Map(), { q: 0, r: 0, s: 0 }, 10));
drawHexes(elevation1, list);

const defs = svg.querySelector('defs');
defs.after(elevation2);
elevation2.after(elevation1);