class Ball { // declare variables color c; float x, y; float diameter; float speed; // constructor Ball(color tempC, float tempX, float tempY, float tempDiameter, float tempSpeed) { c = tempC; x = tempX; y = tempY; diameter = tempDiameter; speed = tempSpeed; } //methods void move() { y+= speed; } void bounce() { if (y>height-diameter/2 || y<diameter/2) { speed = speed*-1; } } void display() { fill(c); noStroke(); ellipse(x, y, diameter, diameter); } }