I recently had an assignment where I had to create a ball that is aware of the sides of the screen and bounces. In order to complete this assignment I used what I learned about int's and if statements. In order to get he balls to move but not further than the width I used this code:
if(bballx > width){
bballx=width;
movex=-movex;
}
This code allowed me to control how far past the width of the screen the ball went. I used this same code except I removed the width and placed it on either height or 0 and I changed bball x and movex with bbally and movey depending on what part of the screen I was dealing with. The full code is down below.
//Original Position of my variables
int bballx=400;
int bbally=300;
//How much the balls should move
int movex=6;
int movey=10;
void setup(){
size(760,760);
background(#CD00FC);
strokeWeight(4);
}
void draw(){
background(#CD00FC);
stroke(#00FCD0);
strokeWeight(4);
fill(#3E00FC);
ellipse(bballx,bbally,100,100);
bballx = bballx + movex;
bbally = bbally + movey;
// (Too far right)
if(bballx > width){
bballx=width;
movex=-movex;
}
// (Too far left)
if(bballx < 0){
bballx=0 ;
movex = -movex;
}
//(Too far down)
if(bbally > height){
bbally=height;
movey = -movey;
}
//(Too far up)
if(bbally < 0){
bbally=0;
movey = -movey;
}
}
“Make everything as simple as possible, but not simpler.”
– Albert Einstein
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