How to Access Class Properties in While Loop

Processing Electronics (Arduino, etc.)
8

Hi @Thundercat,

here is an approach for a simple button handling …

class Button {
  int x,y,w,h;
  String label;
  boolean mouse_over, mouse_pressed, mouse_pressed_state; 
  
  public Button(int x,int y,int w,int h, String label) {
    this.x=x;
    this.y=y;
    this.w=w;
    this.h=h;
    this.label=label;
  }

  public boolean hover(int mX, int mY) {
    mouse_over = (mouseX > x && mouseY < x+w && mouseY > y && mouseY < y+h);
    return mouse_over; 
  }
   
  public void update(int mX, int mY, boolean state) {
    if (hover(mX,mY))
        mouse_pressed=state;
  }
  
  public boolean isPressed() {
    if (mouse_pressed) {
      mouse_pressed=false;
      return true;
    }
    return false;
  }

  public void render() {
    push();
    noFill();
    stroke(mouse_pressed ? color(255,0,0) : mouse_over ? color(0,255,0) : color(255));
    translate(x,y);
    rect(0,0,w,h);
    fill(mouse_pressed ? color(255,0,0) : mouse_over ? color(0,255,0) : color(255));
    translate(x,h/2);
    text(label,x+10,0);
    pop();
    mouse_pressed=false;    
  }
}

Button[] buttons;

void mousePressed() {
  for (Button b:buttons) {
    b.update(mouseX, mouseY,true);
  }
}

void mouseMoved() {
  for (Button b:buttons) {
    b.update(mouseX, mouseY,false);
  }
}

void mouseReleased() {
  for (Button b:buttons) {
    b.update(mouseX, mouseY,false);
  }
}

void setup() {
  size(400,400);
  buttons = new Button[2];
  buttons[0] = new Button(10,10,100,40,"Button 1"); 
  buttons[1] = new Button(10,60,100,40,"Button 2");
}

void draw() {
  background(0);
  for (Button b:buttons) {
    if (b.isPressed()) {
      println("Button " + b.label + " is pressed");      
    }
    b.render();
  }
}