Having trouble with a code and its structure

Spomch · November 22, 2020, 10:46pm

Ok so this is the updated sketch :

import processing.sound.*;
SoundFile Son;
PImage portrait;
PImage telephone;
PImage mail;
PImage arme;
int rand;
int action;
int savedTimeSon;
int savedTimeImage;
int soundTime = 500;
int imageTime = 500;
int state = 0;

void setup() {
  size(640, 640);
  telephone = loadImage("Calls.jpg");
  mail = loadImage("Emails.jpg");
  arme = loadImage("Kills.jpg");
  rand = int(random(1, 155));
}

void draw() {
  
if (state == 0) {
  takerandomimage("portrait" + nf(rand, 3) + ".jpg");
  action = int (random (1, 4));
  if(action==1) {
    image (telephone, 0, 0);
    Son = new SoundFile(this, "Son_calls.mp3");
    Son.play();
  } else if(action==2) {
    image (mail, 0, 0);
    Son = new SoundFile(this, "Son_emails.mp3");
    Son.play();
  } else if(action==3) {
    image (arme, 0, 0);
    Son = new SoundFile(this, "Son_kills.mp3");
    Son.play();
  }
  state ++;
}

else if (state == 1) {
  if (!Son.isPlaying()){
    state = 2;
    }
  }
  
else if (state == 2) {  
  if (!Son.isPlaying()){
    state = 3;
    }
  }
  
else if (state == 3) {  
  if (!Son.isPlaying()){
    state = 4;
    }
  }
}

void takerandomimage(String fn) {
  portrait = loadImage(fn);
  image(portrait, 0, 0);
}

This time :

Only one “action” image appears
But the sound is synced and has no glitches, which has never happened before, so this is good !

But the portrait images never seem to show up, and the program only runs once.
I guess that it has to do with this part of the sketch that I don’t fully understand :

 } else if (state == 1) {
    if (!Son.isPlaying()) {
      state = 2;
    }
  } else if (state == 2) {  
    if (!Son.isPlaying()) {
      state = 3;
    }
  } else if (state == 3) {  
    if (!Son.isPlaying()) {
      state = 4;
    }

Chrisir · November 22, 2020, 11:04pm

not necessary

instead

else if (state == 1) {
  if (!Son.isPlaying()){
    rand = int(random(1, 155)); // !!!!!!
    state = 0;
    }
  }

Chrisir · November 22, 2020, 11:05pm

are you using background anywhere

better if you don’t

Chrisir · November 22, 2020, 11:07pm

are you place the image for the action ABOVE the image for the portrait

both are at 0,0

move the image for the action to the right

image (telephone, 0, 0);

same for mail and telephone and so on

Spomch · November 22, 2020, 11:16pm

I am not using background.
When moving the images for the action, I can see that the image for the portrait is underneath the image for the action.
So the issue is only about the length of display of the images.
I am going to try to implement the timer function in the example that you have showed me before
This one :

int state=0; 
int timer; 

void setup() {
  size(640, 640);

  timer = millis();
  background(0);
}

void draw() {
  background(0); 
  if (state == 0) {
    text("state is 0", 111, 111);
    if (millis()- timer > 3000) {
      state = 1;
    }
  } else if (state == 1) {
    text("state is 1", 111, 111);
  }
}

Spomch · November 23, 2020, 12:03am

New version with an attempt to implement a timer :

import processing.sound.*;
SoundFile Son;
PImage portrait;
PImage telephone;
PImage mail;
PImage arme;
int rand;
int action;
int actionAllowed = 0;
int timer;
int state = 0;

void setup() {
  size(640, 640);
  telephone = loadImage("Calls.jpg");
  mail = loadImage("Emails.jpg");
  arme = loadImage("Kills.jpg");
  rand = int(random(1, 155));
  timer = millis();
}

void draw() {

  if (state == 0) {
    takerandomimage("portrait" + nf(rand, 3) + ".jpg");
    image (portrait, 0, 0);
    if (actionAllowed == 0) {
      if (millis()- timer > 5) {
        actionAllowed = 1;
      }
    } else if (actionAllowed == 1) {
      action = int (random (1, 4));
      if (action==1) {
        image (telephone, 0, 0);
        Son = new SoundFile(this, "Son_calls.mp3");
        Son.play();
      } else if (action==2) {
        image (mail, 0, 0);
        Son = new SoundFile(this, "Son_emails.mp3");
        Son.play();
      } else if (action==3) {
        image (arme, 0, 0);
        Son = new SoundFile(this, "Son_kills.mp3");
        Son.play();
      }
    }
    state ++;
  } else if (state == 1) {
    if (!Son.isPlaying()) {
      state = 2;
    }
  } else if (state == 2) {  
    if (!Son.isPlaying()) {
      state = 3;
    }
  } else if (state == 3) {  
    if (!Son.isPlaying()) {
      state = 4;
    }
  }
}

void takerandomimage(String fn) {
  portrait = loadImage(fn);
  image(portrait, 0, 0);
}

Here, the program only shows one portrait before indicating “NullPointerException”.
I felt like my attempt made sense (logic wise), I’m kind of lost right now.

Chrisir · November 23, 2020, 1:30am

Where does the nullpointer occur?

Spomch · November 23, 2020, 9:52am

It occurs at :

    if (!Son.isPlaying()) {

Chrisir · November 23, 2020, 10:48am

When actionAllowed == 0 the code is executed but Son is not defined

You can say if(Son!=null) right before the if with the isPlaying…

The last case clauses are not needed as I wrote

Spomch · November 23, 2020, 11:47am

Yes but I cannot define Son this early in the program because the random choice has to be done before defining which SoundFile it is.

When you say :

Do you mean like this ?

} else if (state == 1) {
    if (Son!=null) {
      if (!Son.isPlaying()) {
        state = 2;
      }
    }

And what do you mean by :

Chrisir · November 23, 2020, 1:05pm

Yes - that’s correct

Chrisir:

not necessary

instead

else if (state == 1) {
  if (!Son.isPlaying()){
    rand = int(random(1, 155)); // !!!!!!
    state = 0;
    }
  }

Spomch · November 23, 2020, 1:33pm

This is what I have :

import processing.sound.*;
SoundFile Son;
PImage portrait;
PImage telephone;
PImage mail;
PImage arme;
int rand;
int action;
int actionAllowed = 0;
int timer;
int state = 0;

void setup() {
  size(640, 640);
  telephone = loadImage("Calls.jpg");
  mail = loadImage("Emails.jpg");
  arme = loadImage("Kills.jpg");
  rand = int(random(1, 155));
  timer = millis();
}

void draw() {

  if (state == 0) {
    takerandomimage("portrait" + nf(rand, 3) + ".jpg");
    image (portrait, 0, 0);
    if (actionAllowed == 0) {
      if (millis()- timer > 500) {
        actionAllowed = 1;
      }
    } else if (actionAllowed == 1) {
      action = int (random (1, 4));
      if (action==1) {
        image (telephone, 0, 0);
        Son = new SoundFile(this, "Son_calls.mp3");
        Son.play();
      } else if (action==2) {
        image (mail, 0, 0);
        Son = new SoundFile(this, "Son_emails.mp3");
        Son.play();
      } else if (action==3) {
        image (arme, 0, 0);
        Son = new SoundFile(this, "Son_kills.mp3");
        Son.play();
      }
    }
    state ++;
  } else if (state == 1) {
    if (Son!=null) {
      if (!Son.isPlaying()) {
        rand = int(random(1, 155));
        state = 0;
      }
    }
  }
}

void takerandomimage(String fn) {
  portrait = loadImage(fn);
  image(portrait, 0, 0);
}

When I run the code, only one portrait appears

glv · November 23, 2020, 2:27pm

Hello,

You can use println() statements in your code to help debug; print a meaningful string or variable to help you know where you are in the code.

This is always true 500ms after the start of the program:
millis()- timer > 500

In this case 500ms after you initialized timer in setup():
timer = millis();

Is this what you intended for the timer?

There are many examples of timers out there.

:)

Spomch · November 23, 2020, 3:49pm

Thank you for your reply !
I will try to use println() in the future.

Yes, I have read multiple threads and have seen multiple examples, but I feel like I am missing the logic of the timer.

I think that I understand how my timer is currently understanding my orders. But I don’t think that it corresponds to what I intend for the timer.

What I would like to tell the program to do is :

Display a random portrait
Wait 0.5 seconds
Display a random “action” image and play its sound
Wait 0.5 seconds
Repeat

But I don’t know how to change the timer so that it does what I want it to do.
Thanks again !

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Having trouble with a code and its structure

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