p5js scene state

index.js

let currentScene = 1;

function setup() {
  createCanvas(400, 400);
}

function mouseClicked() {
  if (currentScene == 1) {
    currentScene = 2;
  } else {
    currentScene = 1;
  }
}

function draw() {
  background(220);
  
  if (currentScene == 1) {
    scene1();
  }
  
  if (currentScene == 2) {
    scene2();
  }
}

function scene1() {
  background(0,0,0);
}

function scene2() {
  background(100,100,50);
}