This sketch is created with an older version of Processing,
and doesn't work on browsers anymore.
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//classes example 1:
//Inheritance and Aggregation
player p = new player(100,100,24.0);
ballgroup bg = new ballgroup();
boolean kup = false;
boolean kdown = false;
boolean kleft = false;
boolean kright = false;
boolean mbleft = false;
boolean mbright = false;
void setup(){
size(500,500);
frameRate(60);
}
void draw(){
p.update();
bg.update();
background(0);
p.display();
bg.display();
}