Making a quiz like program

Programming Questions

johnnyf2r

in Programming Questions • 1 year ago

Hello there,

I'm not that new to programming or processing, I have worked with it several times. But I ran into a problem. I'm making a program in which you give a response to video. A video is played, you then get a multiple-choice answer.

At first it went good, but when the second video is played it skips to the next video, because the answer is remembered when the key is pressed.

How can I make processing forget the pressed key?

Greetz,

Johnnyf2r

Replies(5)

jbum

Re: Making a quiz like program

1 year ago

We'll need to see your code in order to understand why it is misbehaving for you.

Without seeing your code, I would just suggest that just before you play each video, reset each global variable to,the value it had when you started the first video.

johnnyf2r

Re: Making a quiz like program

1 year ago

// De video bibliotheek binnen halen
import processing.video.*;
Movie intro;
//Movie antwoord3 ;
//Movie antwoord29 ;
//Movie antwoord55 ;
//Movie antwoord81 ;
//Movie antwoord5 ;
//Movie antwoord11 ;
//Movie antwoord17 ;
//Movie antwoord23 ;
//Movie antwoord31 ;
//Movie antwoord37 ;
//Movie antwoord43;
//Movie antwoord49;
//Movie antwoord57 ;
//Movie antwoord63;
//Movie antwoord69 ;
//Movie antwoord75 ;
//Movie antwoord83;
//Movie antwoord89;
//Movie antwoord95;
//Movie antwoord101;
// Aangeven dat de film integer 0 is.
String film = "0";
int laatsteVraag;
boolean antwoord = false;

void setup() {
size(1024, 768);
PFont font;
font = loadFont("ArialNarrow-10.vlw");
textFont(font, 32);

// Het binnen halen van het intro
intro = new Movie(this, "intro.mov", 29);
}

void draw() {
println(film);
// Na het drukken op b wordt de eerste vraag gesteld en film op 1 gezet
if(film == "0") {
    if(keyPressed) {
      if (key == 'b') {
        intro.play();
        image(intro, 0, 0);
        film = "2";
      }
      if(key == 'r') {
        film = "0";
        setup();
      }
    }
}
    // Als film op 1 staat worden de eerste antwoord mogelijkheden gegeven, en daar bij wordt film aangepast
    if(film == "2") {
      background(#000000);
      text("A) Wil je je mond houden?", 15, 658);
      text("B) Pardon ik verstond je niet", 15, 688);
      text("C) Wil je niet zo brutaal doen?", 15, 718);
      text("D) Dit kun je ook op een andere manier vragen, niet?", 15, 748);
      if(keyPressed) {
        if(key == 's') {
          film = "3";
        } else if(key == 'g') {
          film = "28";
        } else if(key == 'j') {
          film = "54";
        } else if(key == 'l') {
          film = "80";
        }
      }
      // Hier wordt er gekeken naar het id van film, en aan de hand daarvan wordt de nieuwe vraag gesteld
      if(film == "3") {
        //antwoord1.play();
        film = "4";
      } else if(film == "28") {
        //antwoord2.play();
        film = "30";
      } else if(film == "54") {
        //antwoord3.play();
        film = "55";
      } else if(film == "80") {
        //antwoord4.play();
        film = "81";
      }
    }

// Als de eerste vraag volledig klaar is, op naar de volgende
if(film == "4") {
    background(#000000);
    text("A) Sorry, maar op deze vraag ga ik geen antwoord geven.", 15, 658);
    text("B) Kun je dit ook aan me vragen, zonder dat het asociaal overkomt? ", 15, 688);
    text("C) Ik wil het je best vertellen, dan moet je wel je vraag anders stellen.", 15, 718);
    text("D) Het station is hier naar links en dan loop je er tegenaan!", 15, 748);
    if(keyPressed) {
      if(key == 's') {
        film = "5";
      }
      if(key == 'g') {
        film = "10";
      }
      if(key == 'j') {
        film = "16";
      }
      if(key == 'l') {
        film = "22";
      }
    }
}
// Hier wordt er gekeken naar het id van film, en aan de hand daarvan wordt de nieuwe vraag gesteld
if(film == "5") {
    //antwoord1.play();
    film = "6";
} else if(film == "10") {
    //antwoord2.play();
    film = "11";
} else if(film == "16") {
    //antwoord3.play();
    film = "17";
} else if(film == "22") {
    //antwoord4.play();
    film = "23";
}

// Als de tweede vraag volledig klaar is, op naar de volgende
if(film == "6") {
    background(#000000);
    text("A) Dat zeker niet, de vraag is of jij het niet bent.", 15, 658);
    text("B) Dom zijn heeft er niets mee te maken", 15, 688);
    text("C) Wie is hier nu dom, jij vraagt de weg.", 15, 718);
    text("D) Ja ik ben onwijs dom, dus ik ga maar weer!", 15, 748);
    if(keyPressed) {
      if(key == 's') {
        film = "106";
        endRecord();
      } else if(key == 'g') {
        film = "106";
      } else if(key == 'j') {
        film = "106";
      } else if(key == 'l') {
        film = "106";
      }
    }
}

// Als de tweede vraag volledig klaar is, op naar de volgende
if(film == "30") {
    background(#000000);
    text("A) Je komt duidelijk door, maar of ik er wat mee wil doen, dat is een ander verhaal!", 15, 658);
    text("B) Lastige opvoeding gehad joh? Zwaar hoor, zoek maar wat hulp!?", 15, 688);
    text("C) Het station is hier naar links en dan loop je er tegenaan!", 15, 718);
    text("D) Met mijn oren is niks mis, volgens mij zijn het die van jou waar wat mee mankeert.", 15, 748);
    if(keyPressed) {
      if(key == 's') {
        film = "30";
      } else if(key == 'g') {
        film = "37";
      } else if(key == 'j') {
        film = "42";
      } else if(key == 'l') {
        film = "48";
      }
    }
    // Hier wordt er gekeken naar het id van film, en aan de hand daarvan wordt de nieuwe vraag gesteld
    if(film == "30") {
      //antwoord1.play();
      film = "31";
    } else if(film == "37") {
      //antwoord2.play();
      film = "38";
    } else if(film == "42") {
      //antwoord3.play();
      film = "43";
    } else if(film == "48") {
      //antwoord4.play();
      film = "49";
    }
}

// Als de tweede vraag volledig klaar is, op naar de volgende
if(film == "55") {
    background(#000000);
    text("A) Ik ga het je vertellen als je mij allereerst eens normaal aanspreekt.", 15, 658);
    text("B) Waarom zou ik je dat nu gaan vertellen, als je mij zo behandeld?", 15, 688);
    text("C) Misschien", 15, 718);
    text("D) Ik ga nu weglopen, hoi!", 15, 748);
    if(keyPressed) {
      if(key == 's') {
        film = "56";
      } else if(key == 'g') {
        film = "62";
      } else if(key == 'j') {
        film = "68";
      } else if(key == 'l') {
        film = "74";
      }
    }
    // Hier wordt er gekeken naar het id van film, en aan de hand daarvan wordt de nieuwe vraag gesteld
    if(film == "56") {
      //antwoord1.play();
      film = "57";
    } else if(film == "62") {
      //antwoord2.play();
      film = "63";
    } else if(film == "68") {
      //antwoord3.play();
      film = "69";
    } else if(film == "74") {
      //antwoord4.play();
      film = "75";
    }
}

// Als de tweede vraag volledig klaar is, op naar de volgende
if(film == "81") {
    background(#000000);
    text("A) Kijk dat is al een heel stuk beleefder! Je kunt het wel.", 15, 658);
    text("B) Dat kan ik, maar nadat je me zo hebt aangesproken wil ik dat niet meer.", 15, 688);
    text("C) Heb je überhaupt zelf wel gekeken? Of vraag je het gewoon maar meteen?", 15, 718);
    text("D) Heb je zelf geen idee waar het zou kunnen zijn?", 15, 748);
    if(keyPressed) {
      if(key == 's') {
        film = "82";
      } else if(key == 'g') {
        film = "88";
      } else if(key == 'j') {
        film = "94";
      } else if(key == 'l') {
        film = "100";
      }
    }
    // Hier wordt er gekeken naar het id van film, en aan de hand daarvan wordt de nieuwe vraag gesteld
    if(film == "82") {
      //antwoord1.play();
      film = "83";
    } else if(film == "88") {
      //antwoord2.play();
      film = "89";
    } else if(film == "94") {
      //antwoord3.play();
      film = "95";
    } else if(film == "100") {
      //antwoord4.play();
      film = "101";
    }
}
}

That is the code, it's in dutch so you won't understand much of it i guess.

I have this variable called film. When the vid is played that gets set to a certain value. I made an excel sheet with the comments I would like, so I'm using those id's to make things easier for myself.

I hope the code is clear enough for you to understand, if not please ask.

The code is for an object I need to make which is going to be displayed. It's for my school project.

johnnyf2r

Re: Making a quiz like program

1 year ago

Sorry for the double post. But the problem seems to be that when a key is pressed it gets remembered. This way the answer given in the first question is also the answer in the second question.

I tried putting a boolean in between it, and then placed the true after the content I wanted to show, but it still skips that. What other possibilities do I have? Or is there a way to make processing forget the previous answer?

jbum

Re: Making a quiz like program

1 year ago

A few comments.

The draw function is going to be called many times per second. Try walking through it, and follow what happens. Then walk through it again, remembering that it is now only a few milliseconds later. Is it doing the right things? As you walk through it, follow what is in the code, literally and stupidly, like a computer. Don't assume it will do the "right thing" just read the code for what it is actually doing.

Your film variable is currently a string, but you are always assigning it values that resemble numbers. Consider making it an int, and remove all those needless quotes around the numbers.

Read up on the idea of "state machines", particularly as used in game design. You are basically making a state machine, and your film variable is keeping track of one kind of state. There are some states you do not currently seem to be tracking well, or at all. Is a video currently playing? Has the video stopped? Is it time to launch the next video?

Depending on the state of the video, you may, or may not be interested to know if a key was pressed, or you might respond to the keys different ways.

An overall structure, in pseudo code that might work...

Is a video currently playing?

Do nothing

Else is the video done and we have not processed response?

Present questions

Is a key pressed?

Is the answer right?

Show positive response

Determine next video to show

Else Is the answer wrong?

Show negative response

Determine next video to show

else have we processed response and sufficient time has elapsed?

Start next video...

johnnyf2r

Re: Re: Making a quiz like program

1 year ago

Thanks mate I found the issue. I forget to set keyPressed on false. I also didn't came up with that back then. My issue is solved for now.

Thanks for the help!