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giorgiomartini
GiorgioMa..

Simple gravity is not working... OOP exercise

in Programming Questions  •  5 months ago  
Hi there, im doing a basic rectangle that falls and is affected by gravity, is an exercise to create it in an OO manner.

but something is wrong... the rect stays fixed on the middle upper part of the sdcreen...

any ideas whats wrong ? thanks!

here is in openprocesing:  ( by the way , whats the best service to share code ? )

 
Copy code
  2. RectGravity myRectGravity;

  4. void setup(){
  5. size (200,200);
  6. smooth ();
  7. myRectGravity = new RectGravity(); 
  8. }

  10. void draw(){
  11.     myRectGravity.display();

  13. }

  15. class RectGravity{
  16.                      //Data
  17.          float x;
  18.         float y ;
  19.     float speed ;
  20.   float gravity ;
  21.                      //Constructor
  22.    RectGravity(){ 
  23.          x = 100;
  24.            y = 0;
  25.        speed = 0;
  26.    gravity = 0.1; 
  27.   }
  28.                      // Function

  30. void display(){
  31. fill (0);
  32. noStroke ();
  33. rectMode (CENTER);
  34. rect (x,y,10,10);

  36. y = y + speed ;
  37. speed = speed + gravity;

  39. if ( y < height){
  40. speed = speed * -0.95;}
  41. }
  42.   
  43. }

Replies(3)

Chrisir
Chrisir

Re: Simple gravity is not working... OOP exercise

5 months ago

here


Copy code
  1. RectGravity myRectGravity;
  2. void setup() {
  3.   size (200, 200);
  4.   smooth ();
  5.   background (111);
  6.   myRectGravity = new RectGravity();
  7. }
  8. void draw() {
  9.   background (111);
  10.   myRectGravity.display();
  11. }
  12. class RectGravity {
  13.   //Data
  14.   float x;
  15.   float y ;
  16.   float speed ;
  17.   float gravity ;
  18.   //Constructor
  19.   RectGravity() {
  20.     x = 100;
  21.     y = 0;
  22.     speed = 0;
  23.     gravity = 0.1;
  24.   }
  25.   // Function
  26.   void display() {
  27.     fill (0);
  28.     noStroke ();
  29.     rectMode (CENTER);
  30.     rect (x, y, 10, 10);
  31.     y = y + speed ;
  32.     speed = speed + gravity;
  33.     if ( y > height) {
  34.       speed = speed * -0.95;
  35.     }
  36.   }
  37. }

GiorgioMartini
GiorgioMa..

Re: Re: Simple gravity is not working... OOP exercise

5 months ago
Thanks !
Chrisir
Chrisir

Re: Simple gravity is not working... OOP exercise

5 months ago


You're welcome!


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