Pacman: how to add ghosts and a general score?

Emi6797

Hey guys, I've to programm a game for a college project: I decided for Pacman and everything works except the ghosts and a general score. It d be awesome if someone could help! Thanks in advance.

class Pacman {

  int x;
  int y;
  int durchmesser;
  int state = 0;
  float animTimerSec = 0;
  float ANIM_CYCLE = .5;
      int score;
    int life;
    PFont font;
    boolean [] [] food = new boolean [20][15];

  Pacman(int d) {
    durchmesser = d;
    x = d/2;
    y = d/2;
  }

    ////start over the game every time pacman touches the X and Y walls
    void startOver () {
      if  ((pacman.x > width) || (pacman.x < 0) ||
        (pacman.y > height) || (pacman.y < 0)) {
    //    pacman = new pacman();     
        life-=1;
        score=0;
        background (0);
        textFont(font);
        println("You died");
        fill (0, 255, 255);
        text("You died", height/2, width/2);
      }
      if  (life==0)
      {
        println ("Game over");
        background (0);
        textFont(font);
        fill (0, 255, 255);
        text("GAME OVER ", height/2, width/2);
      }
      else if (score==100)
      {
        println ("YOU WON!!!");
        background (0);
        textFont(font);
        fill (0, 255, 255);
        text("YOU WON!!!", height/2, width/2);
      }
    }

  void draw() {
    noStroke();
    fill(#FFE624);
    animTimerSec += 1.0/frameRate;

    if (animTimerSec >= ANIM_CYCLE) {
      animTimerSec = 0;
      state++;
      state = state % 2;
    }

    if (state == 0) {
      ellipse(x, y, durchmesser, durchmesser);
    } 
    else if (state == 1) {
      arc(x, y, durchmesser, durchmesser, radians(30), 
      radians(330));
    }

    fill(0);
    ellipse(x+durchmesser/6, y-durchmesser/3, 8, 8);
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}

// Tastatursteuerung
void keyPressed() {
  if (keyCode == LEFT) {
    pacman.moveLeft();
  }
  if (keyCode == RIGHT) {
    pacman.moveRight();
  }
  if (keyCode == UP) {
    pacman.moveUp();
  }
  if (keyCode == DOWN) {
    pacman.moveDown();
  }
}
class Punkt {
  int x;
  int y;
  int wert = 5;
  boolean alive = true;

  Punkt(int px, int py) {
    x = px;
    y = py;
  }

  void draw() {
    // zeichne nur, wenn noch nicht gefressen
    if (alive) {
      noStroke();
      fill(#FF52F4);
      ellipse(x, y, 10, 10);
    }
  }
}
int score = 0;
int cellSize = 40;
Pacman pacman = new Pacman(cellSize);
Punkt[] punkte = new Punkt[30];

void setup() {
  size(400, 400);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
}



// Gibt true zurück, wenn Punkt erfolgreich gegessen

boolean tryToEat(Punkt p) {
  // Punkt ist bereits gegessen
  if (!p.alive) {
    return false;
  }

  // Wenn auf gleichem Feld: Punkt essen
  if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false; 
    return true; // Erfolgreich gegessen!
  }

  return false; 
}
void draw() {
  background(0);
  pacman.draw();
  for (int i = 0; i < punkte.length; i++) {
    boolean eaten = tryToEat(punkte[i]);

    if (eaten) {
      score += punkte[i].wert;
    }

    punkte[i].draw();
  }
}
class Geist {
  int x;
  int y;
  int durchmesser;

  Geist(int gx, int gy, int d) {
    x = gx;
    y = gy;
    durchmesser = d;
  }

  void draw() {
    noStroke();
    fill(#79D3FF);

    // Körper
    ellipse(x, y, durchmesser, durchmesser);
    rectMode(CORNER);
    rect(x-durchmesser/2, y, durchmesser, durchmesser/2);

    // Augen
    rectMode(CENTER);
    fill(0);
    rect(x-durchmesser/4, y, durchmesser/4, durchmesser/8);
    rect(x+durchmesser/4, y, durchmesser/4, durchmesser/8);
  }

  // Im Gegensatz zu Pacman wollen wir einen 
  // zufälligen Bewegungsschritt ausführen
  void move() {
    int richtung = (int)random(0, 4);
    if (richtung == 0) {
      moveLeft();
    }
    if (richtung == 1) {
      moveRight();
    }
    if (richtung == 2) {
      moveUp();
    }
    if (richtung == 3) {
      moveDown();
    }
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}
// neue globale Variablen
Geist[] geister = new Geist[3];
int leben = 3;
void setup() {
  size(10*cellSize, 10*cellSize);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
  for (int i = 0; i < geister.length; i++) {
    int x = (int)random(3, 10) * cellSize + cellSize/2;
    int y = (int)random(3, 10) * cellSize + cellSize/2;
    geister[i] = new Geist(x, y, cellSize);
  }
}
void manageGeister() {

  // Alle 50 Zyklen die Geister bewegen
  boolean move = false;
  if (timer <= 0) {
    move = true;
    timer = 50;
  }
  timer--;

  for (int i = 0; i < geister.length; i++) {
    if (move) {
      geister[i].move();
    }
    geister[i].draw();

    boolean eaten = geister[i].tryToEat(pacman);
    if (eaten) {
      leben--;

      // Pacman wieder oben links erscheinen lassen
      int x = cellSize/2;
      int y = cellSize/2;
      pacman.x = x;
      pacman.y = y;
    }
  }
}

Emi6797

I have no idea why it looks that shitty .... sry for that

Chrisir

ok, go back, edit your post format your code

2 empty lines before and after the code

select entire code and hit ctrl-o

Chrisir

before you post you can hit ctrl-t in processing (not in the forum) to get some auto-format

Emi6797

Thank you for the tip!

Chrisir

Was funktioniert nicht mit den Geistern?

Chrisir

you must be joking...

the code doesn't even run

this is homework

just unify the setups you got and draw the ghosts in draw()

don't be lazy....

Emi6797

well, it works until I declare the ghosts actually, that's the problem and I've no idea what I've done wrong. This one here should work, but it's without ghosts or anything:

class Pacman {

  int x;
  int y;
  int durchmesser;
  int state = 0;
  float animTimerSec = 0;
  float ANIM_CYCLE = .5;

  Pacman(int d) {
    durchmesser = d;
    x = d/2;
    y = d/2;
  }

  void draw() {
    noStroke();
    fill(#FFE624);
    animTimerSec += 1.0/frameRate;

    if (animTimerSec >= ANIM_CYCLE) {
      animTimerSec = 0;
      state++;
      state = state % 2;
    }

    if (state == 0) {
      ellipse(x, y, durchmesser, durchmesser);
    } 
    else if (state == 1) {
      arc(x, y, durchmesser, durchmesser, radians(30), 
      radians(330));
    }

    fill(0);
    ellipse(x+durchmesser/6, y-durchmesser/3, 8, 8);
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}


// Tastatursteuerung
void keyPressed() {
  if (keyCode == LEFT) {
    pacman.moveLeft();
  }
  if (keyCode == RIGHT) {
    pacman.moveRight();
  }
  if (keyCode == UP) {
    pacman.moveUp();
  }
  if (keyCode == DOWN) {
    pacman.moveDown();
  }
}
class Punkt {
  int x;
  int y;
  int wert = 5;
  boolean alive = true;

  Punkt(int px, int py) {
    x = px;
    y = py;
  }

  void draw() {
    // zeichne nur, wenn noch nicht gefressen
    if (alive) {
      noStroke();
      fill(#FF52F4);
      ellipse(x, y, 10, 10);
    }
  }
}
int score = 0;
int cellSize = 40;
Pacman pacman = new Pacman(cellSize);
Punkt[] punkte = new Punkt[30];

void setup() {
  size(400, 400);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
}
// Gibt true zurück, wenn Punkt erfolgreich gegessen

boolean tryToEat(Punkt p) {
  // Punkt ist bereits gegessen
  if (!p.alive) {
    return false;
  }

  // Wenn auf gleichem Feld: Punkt essen
  if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false; 
    return true; 
  }

  return false; 
}
void draw() {
  background(0);
  pacman.draw();
  for (int i = 0; i < punkte.length; i++) {
    boolean eaten = tryToEat(punkte[i]);

    if (eaten) {
      score += punkte[i].wert;
    }

    punkte[i].draw();
  }
}

Chrisir

???

well , if you look at the two setup() you had, now a lot of them is missing - you didn't unify them at all

also, a lot of draw() is missing

TfGuy44

https://forum.processing.org/two/discussion/11156/pac-man-game-not-completed-asking-for-assistance#latest

I've done Pacman to death. Go see. It even has ghosts.

Chrisir

it's homework...

Let him work with his code....

Emi6797

Actually I have no idea how to implement all this stuff as I'm really new to Processing and used a tutorial to do this, but it didn't work out. That's why it would be awesome if someone could just change the code so that it works... I would really appreciate it!

TfGuy44

Yeah, that's not going to happen. Did you even check out the link I posted? I basically outlined the whole development process for Pacman. You need to follow along better, and actually learn how to program and know what the code does.

Chrisir

It didn't work out??

Post your entire code and tell us where you are struggeling....

Emi6797

@TfGuy44 Yeah, I obviously checked out the link you posted, but it didn't work. Well, I know that one, thing is that as I'm new to Processing I'm really limited in what I can do and what not, but if I see a code I usually know what the code does. It's just hard for me, to figure stuff out. I'm actually not really talented in programming, but as I mentioned earlier it's a college project so I'm at least trying

Emi6797

    class Pacman {

    int x;
    int y;
    int durchmesser;
    int state = 0;
    float animTimerSec = 0;
    float ANIM_CYCLE = .5;

    Pacman(int d) {
    durchmesser = d;
    x = d/2;
    y = d/2;
    }



    void draw() {
    noStroke();
    fill(#FFE624);
    animTimerSec += 1.0/frameRate;

    if (animTimerSec >= ANIM_CYCLE) {
    animTimerSec = 0;
    state++;
    state = state % 2;
    }

    if (state == 0) {
    ellipse(x, y, durchmesser, durchmesser);
    }
    else if (state == 1) {
    arc(x, y, durchmesser, durchmesser, radians(30),
    radians(330));
    }

    fill(0);
    ellipse(x+durchmesser/6, y-durchmesser/3, 8, 8);
    }

    void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
    }

    void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
    }

    void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
    }

    void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
    }
    }

    // Tastatursteuerung
    void keyPressed() {
    if (keyCode == LEFT) {
    pacman.moveLeft();
    }
    if (keyCode == RIGHT) {
    pacman.moveRight();
    }
    if (keyCode == UP) {
    pacman.moveUp();
    }
    if (keyCode == DOWN) {
    pacman.moveDown();
    }
    }
    class Punkt {
    int x;
    int y;
    int wert = 5;
    boolean alive = true;

    Punkt(int px, int py) {
    x = px;
    y = py;
    }

    void draw() {
    // zeichne nur, wenn noch nicht gefressen
    if (alive) {
    noStroke();
    fill(#FF52F4);
    ellipse(x, y, 10, 10);
    }
    }
    }
    int score = 0;
    int cellSize = 40;
    Pacman pacman = new Pacman(cellSize);
    Punkt[] punkte = new Punkt[30];

    void setup() {
    size(400, 400);
    for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
    }
    }



    // Gibt true zurück, wenn Punkt erfolgreich gegessen

    boolean tryToEat(Punkt p) {
    // Punkt ist bereits gegessen
    if (!p.alive) {
    return false;
    }

    // Wenn auf gleichem Feld: Punkt essen
    if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false;
    return true; // Erfolgreich gegessen!
    }

    return false;
    }
    void draw() {
    background(0);
    pacman.draw();
    for (int i = 0; i < punkte.length; i++) {
    boolean eaten = tryToEat(punkte[i]);

    if (eaten) {
    score += punkte[i].wert;
    }

    punkte[i].draw();
    }
    }

    //------------------it functions until here, but I also want to add the function of Pacman being able to open his mouth according to the direction he's moving, tried to implement that with render but didn't work out-----------------------

    class Geist {
    int x;
    int y;
    int durchmesser;

    Geist(int gx, int gy, int d) {
    x = gx;
    y = gy;
    durchmesser = d;
    }

    void draw() {
    noStroke();
    fill(#79D3FF);

    // Körper
    ellipse(x, y, durchmesser, durchmesser);
    rectMode(CORNER);
    rect(x-durchmesser/2, y, durchmesser, durchmesser/2);

    // Augen
    rectMode(CENTER);
    fill(0);
    rect(x-durchmesser/4, y, durchmesser/4, durchmesser/8);
    rect(x+durchmesser/4, y, durchmesser/4, durchmesser/8);
    }

    // zufälligen Bewegungsschritt ausführen
    void move() {
    int richtung = (int)random(0, 4);
    if (richtung == 0) {
    moveLeft();
    }
    if (richtung == 1) {
    moveRight();
    }
    if (richtung == 2) {
    moveUp();
    }
    if (richtung == 3) {
    moveDown();
    }
    }

    void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
    }

    void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
    }

    void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
    }

    void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
    }
    }
    // neue globale Variablen
    Geist[] geister = new Geist[3];
    int leben = 3;
    void setup() {
    size(10*cellSize, 10*cellSize);
    for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
    }
    for (int i = 0; i < geister.length; i++) {
    int x = (int)random(3, 10) * cellSize + cellSize/2;
    int y = (int)random(3, 10) * cellSize + cellSize/2;
    geister[i] = new Geist(x, y, cellSize);
    }
    }
    void manageGeister() {

    // Alle 50 Zyklen die Geister bewegen
    boolean move = false;
    if (timer <= 0) {
    move = true;
    timer = 50;
    }
    timer--;

    for (int i = 0; i < geister.length; i++) {
    if (move) {
    geister[i].move();
    }
    geister[i].draw();

    boolean eaten = geister[i].tryToEat(pacman);
    if (eaten) {
    leben--;

    // Pacman wieder oben links erscheinen lassen
    int x = cellSize/2;
    int y = cellSize/2;
    pacman.x = x;
    pacman.y = y;
    }
    }
    }
 //this part doesn't function at all and I have no idea why.. 

Chrisir

Und was funktioniert denn nun nicht?

TfGuy44

Your code is very flat. All the indenting is the same.

Press Ctrl + t to automatically format it and fix the indenting.

You get the resulting code:

class Pacman {

  int x;
  int y;
  int durchmesser;
  int state = 0;
  float animTimerSec = 0;
  float ANIM_CYCLE = .5;

  Pacman(int d) {
    durchmesser = d;
    x = d/2;
    y = d/2;
  }



  void draw() {
    noStroke();
    fill(#FFE624);
    animTimerSec += 1.0/frameRate;

    if (animTimerSec >= ANIM_CYCLE) {
      animTimerSec = 0;
      state++;
      state = state % 2;
    }

    if (state == 0) {
      ellipse(x, y, durchmesser, durchmesser);
    } else if (state == 1) {
      arc(x, y, durchmesser, durchmesser, radians(30), 
      radians(330));
    }

    fill(0);
    ellipse(x+durchmesser/6, y-durchmesser/3, 8, 8);
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}

// Tastatursteuerung
void keyPressed() {
  if (keyCode == LEFT) {
    pacman.moveLeft();
  }
  if (keyCode == RIGHT) {
    pacman.moveRight();
  }
  if (keyCode == UP) {
    pacman.moveUp();
  }
  if (keyCode == DOWN) {
    pacman.moveDown();
  }
}
class Punkt {
  int x;
  int y;
  int wert = 5;
  boolean alive = true;

  Punkt(int px, int py) {
    x = px;
    y = py;
  }

  void draw() {
    // zeichne nur, wenn noch nicht gefressen
    if (alive) {
      noStroke();
      fill(#FF52F4);
      ellipse(x, y, 10, 10);
    }
  }
}
int score = 0;
int cellSize = 40;
Pacman pacman = new Pacman(cellSize);
Punkt[] punkte = new Punkt[30];

void setup() {
  size(400, 400);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
}



// Gibt true zurück, wenn Punkt erfolgreich gegessen

boolean tryToEat(Punkt p) {
  // Punkt ist bereits gegessen
  if (!p.alive) {
    return false;
  }

  // Wenn auf gleichem Feld: Punkt essen
  if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false;
    return true; // Erfolgreich gegessen!
  }

  return false;
}
void draw() {
  background(0);
  pacman.draw();
  for (int i = 0; i < punkte.length; i++) {
    boolean eaten = tryToEat(punkte[i]);

    if (eaten) {
      score += punkte[i].wert;
    }

    punkte[i].draw();
  }
}

//------------------it functions until here, but I also want to add the function of Pacman being able to open his mouth according to the direction he's moving, tried to implement that with render but didn't work out-----------------------

class Geist {
  int x;
  int y;
  int durchmesser;

  Geist(int gx, int gy, int d) {
    x = gx;
    y = gy;
    durchmesser = d;
  }

  void draw() {
    noStroke();
    fill(#79D3FF);

    // Körper
    ellipse(x, y, durchmesser, durchmesser);
    rectMode(CORNER);
    rect(x-durchmesser/2, y, durchmesser, durchmesser/2);

    // Augen
    rectMode(CENTER);
    fill(0);
    rect(x-durchmesser/4, y, durchmesser/4, durchmesser/8);
    rect(x+durchmesser/4, y, durchmesser/4, durchmesser/8);
  }

  // zufälligen Bewegungsschritt ausführen
  void move() {
    int richtung = (int)random(0, 4);
    if (richtung == 0) {
      moveLeft();
    }
    if (richtung == 1) {
      moveRight();
    }
    if (richtung == 2) {
      moveUp();
    }
    if (richtung == 3) {
      moveDown();
    }
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}
// neue globale Variablen
Geist[] geister = new Geist[3];
int leben = 3;
void setup() {
  size(10*cellSize, 10*cellSize);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
  for (int i = 0; i < geister.length; i++) {
    int x = (int)random(3, 10) * cellSize + cellSize/2;
    int y = (int)random(3, 10) * cellSize + cellSize/2;
    geister[i] = new Geist(x, y, cellSize);
  }
}
void manageGeister() {

  // Alle 50 Zyklen die Geister bewegen
  boolean move = false;
  if (timer <= 0) {
    move = true;
    timer = 50;
  }
  timer--;

  for (int i = 0; i < geister.length; i++) {
    if (move) {
      geister[i].move();
    }
    geister[i].draw();

    boolean eaten = geister[i].tryToEat(pacman);
    if (eaten) {
      leben--;

      // Pacman wieder oben links erscheinen lassen
      int x = cellSize/2;
      int y = cellSize/2;
      pacman.x = x;
      pacman.y = y;
    }
  }
}
//this part doesn't function at all and I have no idea why.. 

If you try to run this, you get an error - there are two functions called setup()!

I think you need to re-evaluate where you are putting {curly brackets} ?

TfGuy44

Interestingly enough, you have a perfectly fine working sketch in the top half:

class Pacman {

  int x;
  int y;
  int durchmesser;
  int state = 0;
  float animTimerSec = 0;
  float ANIM_CYCLE = .5;

  Pacman(int d) {
    durchmesser = d;
    x = d/2;
    y = d/2;
  }



  void draw() {
    noStroke();
    fill(#FFE624);
    animTimerSec += 1.0/frameRate;

    if (animTimerSec >= ANIM_CYCLE) {
      animTimerSec = 0;
      state++;
      state = state % 2;
    }

    if (state == 0) {
      ellipse(x, y, durchmesser, durchmesser);
    } else if (state == 1) {
      arc(x, y, durchmesser, durchmesser, radians(30), 
      radians(330));
    }

    fill(0);
    ellipse(x+durchmesser/6, y-durchmesser/3, 8, 8);
  }

  void moveLeft() {
    x -= durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveRight() {
    x += durchmesser;
    x = constrain(x, durchmesser/2, width-durchmesser/2);
  }

  void moveUp() {
    y -= durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }

  void moveDown() {
    y += durchmesser;
    y = constrain(y, durchmesser/2, height-durchmesser/2);
  }
}

// Tastatursteuerung
void keyPressed() {
  if (keyCode == LEFT) {
    pacman.moveLeft();
  }
  if (keyCode == RIGHT) {
    pacman.moveRight();
  }
  if (keyCode == UP) {
    pacman.moveUp();
  }
  if (keyCode == DOWN) {
    pacman.moveDown();
  }
}
class Punkt {
  int x;
  int y;
  int wert = 5;
  boolean alive = true;

  Punkt(int px, int py) {
    x = px;
    y = py;
  }

  void draw() {
    // zeichne nur, wenn noch nicht gefressen
    if (alive) {
      noStroke();
      fill(#FF52F4);
      ellipse(x, y, 10, 10);
    }
  }
}
int score = 0;
int cellSize = 40;
Pacman pacman = new Pacman(cellSize);
Punkt[] punkte = new Punkt[30];

void setup() {
  size(400, 400);
  for (int i = 0; i < punkte.length; i++) {
    int x = (int)random(0, 10) * cellSize + cellSize/2;
    int y = (int)random(0, 10) * cellSize + cellSize/2;
    punkte[i] = new Punkt(x, y);
  }
}



// Gibt true zurück, wenn Punkt erfolgreich gegessen

boolean tryToEat(Punkt p) {
  // Punkt ist bereits gegessen
  if (!p.alive) {
    return false;
  }

  // Wenn auf gleichem Feld: Punkt essen
  if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false;
    return true; // Erfolgreich gegessen!
  }

  return false;
}
void draw() {
  background(0);
  pacman.draw();
  for (int i = 0; i < punkte.length; i++) {
    boolean eaten = tryToEat(punkte[i]);

    if (eaten) {
      score += punkte[i].wert;
    }

    punkte[i].draw();
  }
}

TfGuy44

AH! HA HA HA HA HA!

Tell me, what do you think the function tryToEat() does?

To remind you, here it is:

boolean tryToEat(Punkt p) {
  // Punkt ist bereits gegessen
  if (!p.alive) {
    return false;
  }
  // Wenn auf gleichem Feld: Punkt essen
  if (dist(pacman.x, pacman.y, p.x, p.y) <= 2/2) {
    p.alive = false;
    return true; // Erfolgreich gegessen!
  }
  return false;
}

Specifically, look at what the parameter to this function is. It's a Punkt - a point. This function "tries to eat a point". Well, what it actually tried to do is to set this point's alive property to false, so that it is no longer drawn. This happens when pacman is in the same place as a point, making it look like pacman has eaten the point.

Here's how you're trying to use this function later, in the new code:

boolean eaten = geister[i].tryToEat(pacman);

You're trying to get the geisters (Ghosts) to eat pacman! But pacman is a Pacman, not a Punkt (Point)!

You saw a function called "tryToEat()", assumed that if you called that function for each ghost and passed in Pacman, then the ghosts would just move towards and try to eat pacman!

Basically, you tried to take a shortcut without understanding how the sketch worked at all.

Maybe you should rename that function "killAPunkt()", to avoid confusion.

After you do that, you can probably figure out that trying to tell a ghost to killAPunkt(pacman) isn't going to work.

:))

But seriously, you should learn how to develop software yourself. Try following along with the code I posted in the thread I linked to. Make sure you can understand why I change what I change.