Controlling two objects' movement in ping pong game in Processing - processing

Question

I'm trying to build a ping pong game with Processing language. For this two-player game I have two controllers at each end of the 'table'. I coded the movements of the players (up and down) by binding them to the keys:
- w and s for player 1
- o and l for player 2
Although this works when I press them one at a time, I cannot figure out how to make them move simultaneously, as in pressing both w and o at the same time.
Here is my code:
int x=535;
int y=350;
int dx=5;
int dy=5;
int pX=10;
int pY=520;
int pX1=1870;
int pY1=520;
int pS=5;
void setup() {
size(1920,1080);
}
void draw() {
background(0);
rect(960,0,5,1080);
rect(pX,pY,40,150);
rect(pX1,pY1,40,150);
ellipse(x,y,50,50);
x=x+dx;
y=y+dy;
bounce();
move();
move1();
}
void bounce(){
if(x>=1920 || x<=0){
dx=-dx;
}
if(y>1080 || y<0){
dy=-dy;
}
}
void move(){
if(keyPressed){
if(key == 's'){
pY+=pS;
}else if (key == 'w'){
pY-=pS;
}
}
}
void move1() {
if(keyPressed){
if(key == 'l'){
pY1+=pS;
}else if (key == 'o'){
pY1-=pS;
}
}
}

Answer 1

What you want to do is create a boolean value for each key you care about. Then in the keyPressed() function, you set the corresponding variable to true, and in the keyReleased() function, you set the corresponding variable to false. Then in your draw() function, you check the variables to determine which keys are pressed.
Shameless self-promotion: I wrote a tutorial on getting user input available here. Check out the Handling Multiple Keys section.