Bouncing Balls, struggling with getting more than 1 (processing)












1















so I want to have 10 Balls bouncing up and down. So far I have managed to get 1 Ball to bounce, and to have something like gravity.
But now I want to add more balls, but I just can`t manage to do so. So far I tried to add an array, and then to use a loop, but nothing I tried worked for me yet.
Would appreciate if somebody could point me out to the Solution.



 Ball b; 

void setup() {
size(940, 660);
b = new Ball();
}

void draw() {
background(50);
fill(255);

b.display();
b.move();
}


and the class:



class Ball 
{
float circleX;
float circleY;
float speed;
float gravity=0.2;

Ball() {
speed = 0;
circleY = 0;
circleX = 200;
}

void move() {
speed = speed + gravity; //gravity draufrechnen
circleY = circleY + speed; //mit der geschwindigkeit bewegegn
if (circleY >= height){
speed = -speed; //andere richtung
circleY = height;
speed = speed*0.9;
}
}
void display() {
stroke(0);
fill(127);
ellipse(circleX, circleY, 50 , 50);
}
}









share|improve this question

























  • Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

    – M.G
    Nov 24 '18 at 0:34













  • Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

    – DevilsHnd
    Nov 24 '18 at 1:45
















1















so I want to have 10 Balls bouncing up and down. So far I have managed to get 1 Ball to bounce, and to have something like gravity.
But now I want to add more balls, but I just can`t manage to do so. So far I tried to add an array, and then to use a loop, but nothing I tried worked for me yet.
Would appreciate if somebody could point me out to the Solution.



 Ball b; 

void setup() {
size(940, 660);
b = new Ball();
}

void draw() {
background(50);
fill(255);

b.display();
b.move();
}


and the class:



class Ball 
{
float circleX;
float circleY;
float speed;
float gravity=0.2;

Ball() {
speed = 0;
circleY = 0;
circleX = 200;
}

void move() {
speed = speed + gravity; //gravity draufrechnen
circleY = circleY + speed; //mit der geschwindigkeit bewegegn
if (circleY >= height){
speed = -speed; //andere richtung
circleY = height;
speed = speed*0.9;
}
}
void display() {
stroke(0);
fill(127);
ellipse(circleX, circleY, 50 , 50);
}
}









share|improve this question

























  • Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

    – M.G
    Nov 24 '18 at 0:34













  • Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

    – DevilsHnd
    Nov 24 '18 at 1:45














1












1








1








so I want to have 10 Balls bouncing up and down. So far I have managed to get 1 Ball to bounce, and to have something like gravity.
But now I want to add more balls, but I just can`t manage to do so. So far I tried to add an array, and then to use a loop, but nothing I tried worked for me yet.
Would appreciate if somebody could point me out to the Solution.



 Ball b; 

void setup() {
size(940, 660);
b = new Ball();
}

void draw() {
background(50);
fill(255);

b.display();
b.move();
}


and the class:



class Ball 
{
float circleX;
float circleY;
float speed;
float gravity=0.2;

Ball() {
speed = 0;
circleY = 0;
circleX = 200;
}

void move() {
speed = speed + gravity; //gravity draufrechnen
circleY = circleY + speed; //mit der geschwindigkeit bewegegn
if (circleY >= height){
speed = -speed; //andere richtung
circleY = height;
speed = speed*0.9;
}
}
void display() {
stroke(0);
fill(127);
ellipse(circleX, circleY, 50 , 50);
}
}









share|improve this question
















so I want to have 10 Balls bouncing up and down. So far I have managed to get 1 Ball to bounce, and to have something like gravity.
But now I want to add more balls, but I just can`t manage to do so. So far I tried to add an array, and then to use a loop, but nothing I tried worked for me yet.
Would appreciate if somebody could point me out to the Solution.



 Ball b; 

void setup() {
size(940, 660);
b = new Ball();
}

void draw() {
background(50);
fill(255);

b.display();
b.move();
}


and the class:



class Ball 
{
float circleX;
float circleY;
float speed;
float gravity=0.2;

Ball() {
speed = 0;
circleY = 0;
circleX = 200;
}

void move() {
speed = speed + gravity; //gravity draufrechnen
circleY = circleY + speed; //mit der geschwindigkeit bewegegn
if (circleY >= height){
speed = -speed; //andere richtung
circleY = height;
speed = speed*0.9;
}
}
void display() {
stroke(0);
fill(127);
ellipse(circleX, circleY, 50 , 50);
}
}






java arrays object processing






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edited Nov 24 '18 at 0:58









Nick

29.7k121941




29.7k121941










asked Nov 24 '18 at 0:29









Victor Victor

61




61













  • Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

    – M.G
    Nov 24 '18 at 0:34













  • Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

    – DevilsHnd
    Nov 24 '18 at 1:45



















  • Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

    – M.G
    Nov 24 '18 at 0:34













  • Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

    – DevilsHnd
    Nov 24 '18 at 1:45

















Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

– M.G
Nov 24 '18 at 0:34







Is circleY and circleX the balls location? If so when you create multiple balls in your setup they will all be on-top of one another. You should modify your constructor to take in at least a different x value, then try b1 = new Ball(50), b2 = new Ball(200), etc... in your setup, then draw the balls.

– M.G
Nov 24 '18 at 0:34















Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

– DevilsHnd
Nov 24 '18 at 1:45





Create a MCVE of at least one bouncing ball (as your title claims) and before you know it you will be shown how to make 50 bouncing balls.

– DevilsHnd
Nov 24 '18 at 1:45












1 Answer
1






active

oldest

votes


















1














Create a constructor in balls, where you can pass the initial x and y coordinate of a ball:



class Ball 
{
.....

Ball(int x, int y) {
speed = 0;
circleX = x;
circleY = y;
}

.....
}


Create an array of balls and initialize it in the setup function:



int no_of_balls = 10;
Ball balls = new Ball[no_of_balls];

void setup() {

for (int i=0; i<no_of_balls; ++i) {
balls[i] = new Ball(80 + i*80, i*5);
}

size(940, 660);
}


The balls can be initialized with different start heights by using Math.random():



for (int i=0; i<no_of_balls; ++i) {
balls[i] = new Ball( 80 + i*80, (int)(Math.random()*100.0) );
}


display and move the array of balls in draw:



void draw() {
background(50);
fill(255);

for (int i=0; i<no_of_balls; ++i) {
balls[i].display();
balls[i].move();
}
}


Preview (down scaled):








share|improve this answer























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    1 Answer
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    oldest

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    active

    oldest

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    1














    Create a constructor in balls, where you can pass the initial x and y coordinate of a ball:



    class Ball 
    {
    .....

    Ball(int x, int y) {
    speed = 0;
    circleX = x;
    circleY = y;
    }

    .....
    }


    Create an array of balls and initialize it in the setup function:



    int no_of_balls = 10;
    Ball balls = new Ball[no_of_balls];

    void setup() {

    for (int i=0; i<no_of_balls; ++i) {
    balls[i] = new Ball(80 + i*80, i*5);
    }

    size(940, 660);
    }


    The balls can be initialized with different start heights by using Math.random():



    for (int i=0; i<no_of_balls; ++i) {
    balls[i] = new Ball( 80 + i*80, (int)(Math.random()*100.0) );
    }


    display and move the array of balls in draw:



    void draw() {
    background(50);
    fill(255);

    for (int i=0; i<no_of_balls; ++i) {
    balls[i].display();
    balls[i].move();
    }
    }


    Preview (down scaled):








    share|improve this answer




























      1














      Create a constructor in balls, where you can pass the initial x and y coordinate of a ball:



      class Ball 
      {
      .....

      Ball(int x, int y) {
      speed = 0;
      circleX = x;
      circleY = y;
      }

      .....
      }


      Create an array of balls and initialize it in the setup function:



      int no_of_balls = 10;
      Ball balls = new Ball[no_of_balls];

      void setup() {

      for (int i=0; i<no_of_balls; ++i) {
      balls[i] = new Ball(80 + i*80, i*5);
      }

      size(940, 660);
      }


      The balls can be initialized with different start heights by using Math.random():



      for (int i=0; i<no_of_balls; ++i) {
      balls[i] = new Ball( 80 + i*80, (int)(Math.random()*100.0) );
      }


      display and move the array of balls in draw:



      void draw() {
      background(50);
      fill(255);

      for (int i=0; i<no_of_balls; ++i) {
      balls[i].display();
      balls[i].move();
      }
      }


      Preview (down scaled):








      share|improve this answer


























        1












        1








        1







        Create a constructor in balls, where you can pass the initial x and y coordinate of a ball:



        class Ball 
        {
        .....

        Ball(int x, int y) {
        speed = 0;
        circleX = x;
        circleY = y;
        }

        .....
        }


        Create an array of balls and initialize it in the setup function:



        int no_of_balls = 10;
        Ball balls = new Ball[no_of_balls];

        void setup() {

        for (int i=0; i<no_of_balls; ++i) {
        balls[i] = new Ball(80 + i*80, i*5);
        }

        size(940, 660);
        }


        The balls can be initialized with different start heights by using Math.random():



        for (int i=0; i<no_of_balls; ++i) {
        balls[i] = new Ball( 80 + i*80, (int)(Math.random()*100.0) );
        }


        display and move the array of balls in draw:



        void draw() {
        background(50);
        fill(255);

        for (int i=0; i<no_of_balls; ++i) {
        balls[i].display();
        balls[i].move();
        }
        }


        Preview (down scaled):








        share|improve this answer













        Create a constructor in balls, where you can pass the initial x and y coordinate of a ball:



        class Ball 
        {
        .....

        Ball(int x, int y) {
        speed = 0;
        circleX = x;
        circleY = y;
        }

        .....
        }


        Create an array of balls and initialize it in the setup function:



        int no_of_balls = 10;
        Ball balls = new Ball[no_of_balls];

        void setup() {

        for (int i=0; i<no_of_balls; ++i) {
        balls[i] = new Ball(80 + i*80, i*5);
        }

        size(940, 660);
        }


        The balls can be initialized with different start heights by using Math.random():



        for (int i=0; i<no_of_balls; ++i) {
        balls[i] = new Ball( 80 + i*80, (int)(Math.random()*100.0) );
        }


        display and move the array of balls in draw:



        void draw() {
        background(50);
        fill(255);

        for (int i=0; i<no_of_balls; ++i) {
        balls[i].display();
        balls[i].move();
        }
        }


        Preview (down scaled):









        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 24 '18 at 7:52









        Rabbid76Rabbid76

        37.7k113248




        37.7k113248
































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