​

var amt = 1000;

var dmult = 43;

​

function setup() {

  createCanvas(400, 400);

  slider = createSlider(1, 1700, amt).input( function(e) {

      amt = this.value() // causes error

      loop();

    });

  dmultslider = createSlider(1, 1000, dmult, 0.5).input( function(e) {

      dmult = this.value() // causes error

      loop();

    });

  rectMode(CENTER);

}

​

​

const deltas = [[1,0],[0,1],[-1,0],[0,-1]];

const TERRAIN_WALL = 1;

​

const spacing = 10;

const sizes = 5;

​

​

function getTerrainAt(x,y) {

  const s = spacing;

  const w = sizes;

  const h = sizes;

  const d = dist(x,y, 150, 150);

  push();

  translate(200,200);

  const rcomp =  300 * cos(d*dmult);

  const gcomp =  200      

  const bcomp =  200;

  stroke(rcomp, gcomp, bcomp);

  rect((x)*s, (y)*s, w ,h);

  pop();

  return TERRAIN_WALL;

}

​

function findEmptyTerrain(x,y,tried,d=0,l=20) {

  // if theres no length left, be sad and return the coords. yes. whatever.

  if (l < 1) {console.log('naww'); return [x,y]}

  // if we dont encounter a wall, yay. this is where want to be 

  if (getTerrainAt(x,y) != TERRAIN_WALL) {console.log('yay'); return [x,y]}

  // we have tried this tile now, so we can mark it.'

  tried.add(`${x} ${y}`)

​

  // look to the right, have we seen this tile?

  const [dx,dy] = deltas[d];       // same direction

  const [drx,dry] = deltas[(d+1)%4]; // to the right

  if (tried.has(`${x+drx} ${y+dry}`)) {

    return findEmptyTerrain(x+dx,y+dy,tried,d,l-1)

  } else {

    return findEmptyTerrain(x+drx,y+dry,tried,(d+1)%4,l-1)

  }

}

​

​

function draw() {

  background(220);

  findEmptyTerrain(0,0,new Set(), 0, amt)

​

  print([1,1]==[1,1]) // Y*(&#@RT*()&@#TGF*)P#@GT*)&P^#@GT)*FGT@#*)FG@#*)&FG#@)*FG#@*)&FG@#*)(&*)&$#*)@^$#)*@$^)#(*@&$^*)@#$^098364081t4087132fg4087132tg408p23gr0781236h4081237640gf98b172364508271365dh4018237465gf08g3147f65nhb08457n6m907g6chn9840576tvw435097tnh6w0837t6ncy0w3847f6vyn0w94536fg43502gt0287543gr078234rg80344g4018237rg0342fgthy0834fytg083r4fy4390827ry4320985ftyh02n34875f64230856203485nb42o3frgreosufgyreouyfgfdojfgdfsojhfgasjdkfgljk345gtlju34hg76lkjh67g8lj768hg9pi78gpou4hg6c9u73yrtnh085b2478t6rgb298n35476trd9b344d7y6b90834v76r324980bn7r6943728b6r4917365y9t1342f

  dmult+=0.0009;

}

​

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​