For recitation, I chose to work on the object-oriented programming workshop with Tristan to learn more about this topic as well as animation. Tristan went over some fundamentals about classes, arrayLists, and objects. I learned how to use the animation function with classes and arrayList, so it’s good to practice and use the map function for more interactivity. I manipulated the map function so every time user click on the left arrow, the balls would appear and when clicked on a different key after pressing the left arrow, the balls will disappear.
Video:
CODE:
Ball ashleyBall;
Ball tristanBall;
float x;
ArrayList<Ball> ballList = new ArrayList<Ball>();
void setup(){
size(1600,900);
ballList = new ArrayList<Ball>();
for(int i=0; i<100; i++){
ballList.add(new Ball(random(-10,10), random(-10,10),color(random (255))));
x=map(x,0,1023,0,width);
}
}
void draw(){
background(137,207,240);
if (key == CODED) {
if (keyCode == LEFT) {
for(int i=0; i<ballList.size(); i++){
Ball temp = ballList.get(i);
temp.display();
temp.move();
}
}
}
}
class Ball{
float x,y;
color c;
float spdX, spdY;
float r;
Ball(float newSpdX, float newSpdY, color newColor){
r=50;
spdX= newSpdX;
spdY= newSpdY;
c=newColor;
x=width/2;
y=height/2;
}
void move(){
x= x + spdX;
y= y + spdY;
}
void display(){
fill(c);
ellipse(x,y,r,r);
}
}