HW #9

[chasestarr]

In this homework we will practice how to organize our code using object oriented programming. Look back on your homework from week06 for help.

• Create a ball that is affected by gravity using object oriented programming.
• Create a Ball class
• Give your Ball class data: xpos, ypos, speed, gravity
• Make three functions for the Ball class: applyGravity, bounce, display
• Create a constructor and assign initial values for your variables
• Within the main file: create a ball variable and initialize with a new Ball() object
• Call the ball functions using dot notation within draw()

Look at the example from class this week for to base your homework on.

Please paste your code as a comment on this post

[chasestarr]

@mositech/cs2015

Hi everyone, How is the homework coming along? Post any questions you have here. Other people may have the same ones. :exclamation:

[Brandonsugar]

First Tab

Ball theBall;

void setup(){
  size(1000,1000);
  theBall = new Ball();
}

void draw(){
  background(150);
  theBall.sideMove();
  theBall.verticalMove();
  theBall.bounce();
  theBall.display();
  theBall.gravity();
}

[Brandonsugar]

class Ball{
  color c;
  float xPos;
  float yPos;
  float gravity;
  float xSpeed;
  float ySpeed;

  Ball(){
    c=color(0);
    xPos=width/2;
    yPos=height/2;
    ySpeed=5;
    xSpeed=2.5;
    gravity=0.98;
  }

  void display(){
    stroke(0);
    fill(c);
    ellipse(xPos,yPos,70,70);
  }
  void gravity(){
    ySpeed=ySpeed+gravity;
   if(yPos>=967){
    ySpeed=ySpeed*-0.85;
   }
  }
  void sideMove(){
    xPos=xPos+xSpeed;
  }
  void verticalMove(){
    yPos=yPos+ySpeed;
  }
  void bounce(){
    if(xPos>=967){
      xSpeed=xSpeed*-0.7;
    }
    if(xPos<=42){
      xSpeed=xSpeed*-0.75;
    }
  }
}

[GoHawks12]

first tab

Ball myBall;

void setup() {
  size(1000, 1000);
  myBall = new Ball();
}

void draw() {
  background(200);
  myBall.sideMove();
  myBall.verticalMove();
  myBall.bounce();
  myBall.display();
  myBall.gravity();
}

[GoHawks12]

second tab

class Ball {
  color b;
  float xPos;
  float yPos;
  float gravity;
  float xSpeed;
  float ySpeed;

  Ball() {
    b=color(0);
    xPos=width/2;
    yPos=height/2;
    xSpeed=3;
    ySpeed=4.5;
    gravity=0.98;
  }

  void display() {
    stroke(0);
    fill(b);
    ellipse(xPos, yPos, 70, 70);
  }

  void gravity() {
    ySpeed=ySpeed+gravity;
    if (yPos>=950) {
      ySpeed=ySpeed-0.85;
    }
  }

  void sideMove() {
    xPos=xPos+xSpeed;
  }

  void verticalMove() {
    yPos=yPos+ySpeed;
  }

  void bounce() {
    if (xPos>950) {
      xSpeed=xSpeed-0.7;
    }

    if (xPos<=50) {
      xSpeed=xSpeed*-0.75;
    }
  }
}

[Firefox99]

First Tab

greenBall myGreenBall;

void setup(){
 size(900,1100); 
 myGreenBall=new greenBall();
}

void draw(){
 background(16,166,144);
 myGreenBall.display();
 myGreenBall.gravity();
 myGreenBall.bounceBall();

}

Second Tab

class greenBall{
 color g;
 float xBall;
 float yBall;
 float speed;
 float gravity;

 greenBall(){
  g=color(192,248,98);
  xBall=450;
  yBall=79;
  speed=0;
  gravity=0.98;
 }

 void display(){
  fill(g);
  ellipse(xBall,yBall,150,150);
 }

 void gravity(){
   yBall=yBall+speed;
  speed=speed+gravity;
  }
  void bounceBall(){
   if(yBall>1025){
  speed=speed*-0.9; 
 } 
  }
}

[Pummelweed]

Tab No.1

aBall myBall;

void setup(){
  size(550,500);
  myBall = new aBall();
}

void draw(){
  background(0);
  myBall.display();
  myBall.gravity();
  myBall.bounce();
}

Tab No.2

class aBall{
  color c;
  float xpos;
  float ypos;
  float xspeed;
  float gravity;
  float speed;

 aBall(){
  c= color (255,201,245);
  xpos = 250;
  ypos = 1;
  xspeed = 0;
  speed = 5;
  gravity = 0.98;
 }
 void display(){
   fill(c);
   ellipse(xpos,ypos,50,50);
 }

 void gravity(){
   ypos = ypos + xspeed;
   xspeed = xspeed + gravity;
 }

 void bounce(){
   if(ypos >= 500){
     xspeed = xspeed*-0.7;
   }
 }
}

[The-Space-Core]

Oops the code was improved last night.

[The-Space-Core]

Ball madBall;

void setup(){
  size(800,800);
  madBall =new Ball();
}

void draw(){
  background(255);
  madBall.move(5);
  madBall.display();
  madBall.gravity();
  madBall.bounce();
  madBall.yMove();
}

[The-Space-Core]

class Ball{
  color c;
  float ellipseX;
float ellipseY;
float speed;
float gravity;
float speed2;

Ball(){
  c=color(0);
  ellipseX=width/2;
  ellipseY=height/2;
  speed=5;
  gravity=0.2;
  speed2=5;
}

void display(){
  stroke(255);
  fill(c);
  ellipse(ellipseX,ellipseY,50,50);
}
void move(float gravity){
  ellipseX = ellipseX+speed2;
}
void yMove(){
   ellipseY=ellipseY+speed;
}
void gravity(){
  speed=speed+gravity;
    if(ellipseY>=775){
    speed=speed*-0.85;
  }
}
void bounce(){
if (ellipseX>=775){
  speed2=speed2*-0.75;
}
if (ellipseX<=25){
  speed2=speed2*-0.75;
}
}
}