Activar botón y volver a escena intermedia

I think to create a class or an objetct its too complicated for me, but even forgetting that and using this other opcion, the code is not working:

if ((mousePressed) && (mouseX > width/2-50 && mouseX < width/2+50 && mouseY < height/1.35 + 50 && mouseY > height/1.35 -50)){
}


Error says “unreachable code”

This is complete code

int cx, cy;
int offset;

float secondsRadius;
float clockDiameter;

void setup(){
  size(270,540);
  background(0,0,0);
  noStroke();
  offset = second();
  int radius = min(width, height) / 2;
  secondsRadius = radius * 0.72;
  clockDiameter = radius * 1.8;
  
  cx = width / 2;
  cy = height / 2;
  
  
} 


void scene1() {
  background(0,0,0);
  fill(255, 255, 255, 255);
  textSize(height/12);
  textAlign(RIGHT, CENTER);   
  text("blabla", width/2, height/2);
  fill(255, 204 , 0, 255);
  textSize(height/12);
  textAlign(LEFT, CENTER);
  text("blabla", width/2, height/2); 
  fill(255, 95, 95, 255);
  textSize(height/36);
  textAlign(CENTER, CENTER);
  text("blablabla", width/2, height/1.1);
 
}


void scene2() {
  String a = "1. Cuenta cada círculo que aparece en la pantalla.";
  String b = "2. Cada vez que te distraigas, devuelve tu atención a los círculos que estás contando.";
  String c = "Instrucciones.";
  
  background(255);
  fill(0);
  stroke(255,95,95);
  strokeWeight(1);
  line(width/10, height/5, width/1.15, height/5);
  textAlign(LEFT, TOP);
  textSize(height/22);
  text(c, width/10, height/10, width/1.2, height/6.66);
  textSize(height/34);
  text(a, width/10, height/4, width/1.2, height/3.33);
  textSize(height/34);
  text(b, width/10, height/2.5, width/1.2, height/2.22);
 
  //this is my button 
  fill(255,95,95);
  noStroke();
  circle(width/2, height/1.35, height/9);
  noFill();
  stroke(255);
  strokeWeight(4);
  circle(width/2, height/1.35, height/16); 
  noStroke();
  fill(255);
  circle(width/2, height/1.35, height/80);
}
   
void scene3(){
  background(247,108,127);
  float l = width/255;
  strokeWeight(1);
  for(int i = 0; i<width; i++) {
  stroke(252,150,120,255-i/(l));
  line(i,0,i, height);
}
  

  float s = -map(second()-offset, 0, 10, 0, TWO_PI) -HALF_PI; 

  stroke(255);
  strokeWeight(5);
  line(cx, cy, cx + cos(s) * secondsRadius, cy + sin(s) * secondsRadius);


  strokeWeight(5);
  beginShape(POINTS);
  for (int a = 0; a < 360; a+=36) {
    float angle = radians(a)+HALF_PI;
    float x = cx + cos(angle) * secondsRadius;
    float y = cy + sin(angle) * secondsRadius;
    vertex(x, y);
  }
  endShape();
}
  

String scene = "initial";

void draw () {
  switch (scene) {
  case "initial":
    if (millis() > 5000) scene = "millis5000";
    scene1();
    break;
  case "millis5000":
    scene2();
    break;
  default:
    scene1();
    break;
    if ((mousePressed) && (mouseX > width/2-50 && mouseX < width/2+50 && mouseY < height/1.35 + 50 && mouseY > height/1.35 -50)){
    scene3();
  }
  }
  }