Help to reset/restart game

Mikjess

Hey there, i'm VERY new to processing and been working on this little game, its nothing big or impressive, but a fun project for a newbie.

However im having issues with my restart/reset function. When i restart the game, the ball behaviors weird and crashes towards the ground (= gameover) in a milisecond. I would like to reset it like when i play the game the first time after hitting "Run"

Hope someone can help me with this flaw, i know the code itself is messy as heck already!

int gameScreen = 0;
int ballX, ballY;
int ballSize = 20;
int ballColor = color(200, 0, 0);
float gravity = 1;
float ballSpeedVert = 0;
float ballSpeedHorizon = 10;
float airfriction = 0.0001;
float friction = 0.1;
color racketColor = color(0);
float racketWidth = 100;
float racketHeight = 10;
int racketBounceRate = 20;
int score = 0;
PImage bg;

/********* SETUP BLOCK *********/

void setup() {
  size(600, 600);
  bg = loadImage("600x600.jpg");
  ballX=width/4;
  ballY=height/5;
}


/********* DRAW BLOCK *********/

void draw() {
  if (gameScreen == 0) {
    initScreen();
  } else if (gameScreen == 1) {
    gameScreen();
  } else if (gameScreen == 2) {
    gameOverScreen();
  }
}


/********* SCREEN CONTENTS *********/

void initScreen() {
  background(0);
  textAlign(CENTER);
  text("Click to start", height/2, width/2);
}

void gameScreen() {
  background(bg);
  stroke(226, 204, 0);
  text("score " + score, 20, 20);
  drawBall();
  applyGravity();
  keepInScreen();
  drawRacket();
  watchRacketBounce();
  applyHorizontalSpeed();
}

void gameOverScreen() {
  background(0);
  textAlign(CENTER);
  fill(255);
  textSize(30);
  text("Game Over, your score " + score, height/2, width/2 - 20);
  textSize(15);
  text("Press any key to Restart", height/2, width/2 + 10);
}

void restart() {
  gameScreen = 0;
  score = 0;
}


void drawBall() {
  fill(ballColor);
  ellipse(ballX, ballY, ballSize, ballSize);
}

void applyGravity() {
  ballSpeedVert += gravity;
  ballY += ballSpeedVert;
  ballSpeedVert -= (ballSpeedVert * airfriction);
}

void applyHorizontalSpeed() {
  ballX += ballSpeedHorizon;
  ballSpeedHorizon -= (ballSpeedHorizon * airfriction);
}

void makeBounceLeft(int surface) {
  ballX = surface+(ballSize/2);
  ballSpeedHorizon*=-1;
  ballSpeedHorizon -= (ballSpeedHorizon * friction);
}

void makeBounceRight(int surface) {
  ballX = surface-(ballSize/2);
  ballSpeedHorizon*=-1;
  ballSpeedHorizon -= (ballSpeedHorizon * friction);
}

void makeBounceBottom(int surface) {
  ballY = surface-(ballSize/2);
  ballSpeedVert*=-1;
  ballSpeedVert -= (ballSpeedVert * friction);
  score = score +1;
}

void makeBounceTop(int surface) {
  ballY = surface+(ballSize/2);
  ballSpeedVert*=-1;
  ballSpeedVert -= (ballSpeedVert * friction);
}


void keepInScreen() {
  // if the ball hits floor
  if (ballY+(ballSize/2) > height) { 
    gameScreen=2;
    gameOverScreen();
  }
  // If we hit the top
  if (ballY-(ballSize/2) < 0) {
    makeBounceTop(0);
  }
  if (ballX-(ballSize/2) < 0) {
    makeBounceLeft(0);
  }
  if (ballX+(ballSize/2) > width) {
    makeBounceRight(width);
  }
}
void drawRacket() {
  fill(racketColor);
  rectMode(CENTER);
  rect(mouseX, mouseY, racketWidth, racketHeight);
}
void watchRacketBounce() {
  float overhead = mouseY - pmouseY;
  if ((ballX+(ballSize/2) > mouseX-(racketWidth/2)) && (ballX-(ballSize/2) < mouseX+(racketWidth/2))) {
    if (dist(ballX, ballY, ballX, mouseY)<=(ballSize/2)+abs(overhead)) {
      if ((ballX+(ballSize/2) > mouseX-(racketWidth/2)) && (ballX-(ballSize/2) < mouseX+(racketWidth/2))) {
        if (dist(ballX, ballY, ballX, mouseY)<=(ballSize/2)+abs(overhead)) {
          makeBounceBottom(mouseY);
          // racket moving up
          if (overhead<0) {
            ballY+=overhead;
            ballSpeedVert+=overhead;
            ballSpeedHorizon = (ballX - mouseX)/5;
          }
        }
      }
    }
  }
}


/********* INPUTS *********/
void mousePressed() {
  if (gameScreen==0) {
    startGame();
  }
}

void keyPressed() {
  if (gameScreen==2) {
    setup();
    restart();
  }
}



/********* OTHER FUNCTIONS *********/

void startGame() {
  gameScreen=1;
}

Bird

Your variables are not getting reinitialized. I would initialize them (assign a value) within restart() and call restart() in setup(), then there isn't a need to call setup() again in keyPressed().

quark

setup() is executed automatically when the sketch starts and you should never call it directly. @Bird has stated the preferred way to do this.

Mikjess

Aight my current code looks like this

int gameScreen = 0;
int ballX, ballY;
int ballSize = 20;
int ballColor = color(200, 0, 0);
float gravity = 1;
float ballSpeedVert = 0;
float ballSpeedHorizon = 10;
float airfriction = 0.0001;
float friction = 0.1;
color racketColor = color(0);
float racketWidth = 100;
float racketHeight = 10;
int racketBounceRate = 20;
int score = 0;
PImage bg;

/********* SETUP BLOCK *********/

void setup() {
  size(600, 600);
  bg = loadImage("600x600.jpg");
  ballX=width/4;
  ballY=height/5;
}


/********* DRAW BLOCK *********/

void draw() {
  if (gameScreen == 0) {
    initScreen();
  } else if (gameScreen == 1) {
    gameScreen();
  } else if (gameScreen == 2) {
    gameOverScreen();
  }
}


/********* SCREEN CONTENTS *********/

void initScreen() {
  background(0);
  textAlign(CENTER);
  text("Click to start", height/2, width/2);
}

void gameScreen() {
  background(bg);
  stroke(226, 204, 0);
  text("score " + score, 20, 20);
  drawBall();
  applyGravity();
  keepInScreen();
  drawRacket();
  watchRacketBounce();
  applyHorizontalSpeed();
}

void gameOverScreen() {
  background(0);
  textAlign(CENTER);
  fill(255);
  textSize(30);
  text("Game Over, your score " + score, height/2, width/2 - 20);
  textSize(15);
  text("Click to Restart", height/2, width/2 + 10);
}

void restart() {
  gameScreen = 0;
  score = 0;
  setup();
  gravity = 1;
  ballSpeedVert = 0;
  ballSpeedHorizon = 10;
}


void drawBall() {
  fill(ballColor);
  ellipse(ballX, ballY, ballSize, ballSize);
}

void applyGravity() {
  ballSpeedVert += gravity;
  ballY += ballSpeedVert;
  ballSpeedVert -= (ballSpeedVert * airfriction);
}

void applyHorizontalSpeed() {
  ballX += ballSpeedHorizon;
  ballSpeedHorizon -= (ballSpeedHorizon * airfriction);
}

void makeBounceLeft(int surface) {
  ballX = surface+(ballSize/2);
  ballSpeedHorizon*=-1;
  ballSpeedHorizon -= (ballSpeedHorizon * friction);
}

void makeBounceRight(int surface) {
  ballX = surface-(ballSize/2);
  ballSpeedHorizon*=-1;
  ballSpeedHorizon -= (ballSpeedHorizon * friction);
}

void makeBounceBottom(int surface) {
  ballY = surface-(ballSize/2);
  ballSpeedVert*=-1;
  ballSpeedVert -= (ballSpeedVert * friction);
  score = score +1;
}

void makeBounceTop(int surface) {
  ballY = surface+(ballSize/2);
  ballSpeedVert*=-1;
  ballSpeedVert -= (ballSpeedVert * friction);
}


void keepInScreen() {
  // if the ball hits floor
  if (ballY+(ballSize/2) > height) { 
    gameScreen=2;
    gameOverScreen();
  }
  // If we hit the top
  if (ballY-(ballSize/2) < 0) {
    makeBounceTop(0);
  }
  if (ballX-(ballSize/2) < 0) {
    makeBounceLeft(0);
  }
  if (ballX+(ballSize/2) > width) {
    makeBounceRight(width);
  }
}
void drawRacket() {
  fill(racketColor);
  rectMode(CENTER);
  rect(mouseX, mouseY, racketWidth, racketHeight);
}
void watchRacketBounce() {
  float overhead = mouseY - pmouseY;
  if ((ballX+(ballSize/2) > mouseX-(racketWidth/2)) && (ballX-(ballSize/2) < mouseX+(racketWidth/2))) {
    if (dist(ballX, ballY, ballX, mouseY)<=(ballSize/2)+abs(overhead)) {
      if ((ballX+(ballSize/2) > mouseX-(racketWidth/2)) && (ballX-(ballSize/2) < mouseX+(racketWidth/2))) {
        if (dist(ballX, ballY, ballX, mouseY)<=(ballSize/2)+abs(overhead)) {
          makeBounceBottom(mouseY);
          // racket moving up
          if (overhead<0) {
            ballY+=overhead;
            ballSpeedVert+=overhead;
            ballSpeedHorizon = (ballX - mouseX)/5;
          }
        }
      }
    }
  }
}


/********* INPUTS *********/
void mousePressed() {
  if (gameScreen==0) {
    startGame();
  }
  if (gameScreen==2) {
    restart();
  }
}



/********* OTHER FUNCTIONS *********/

void startGame() {
  gameScreen=1;
}

And its working perfectly! Thanks for the help and insight to the both of you, much appreciated.

quark

Wrong you are still calling setup() from line 73. Try this

void setup() {
  size(600, 600);
  bg = loadImage("600x600.jpg");
  ballX=width/4;
  ballY=height/5;
  restart();
}

and

void restart() {
  gameScreen = 0;
  score = 0;
  gravity = 1;
  ballSpeedVert = 0;
  ballSpeedHorizon = 10;
}