Collision detection with walls and objects

Processing Project Guidance
5

Objects in the long run will make things less complex. But i too found objects a bit daunting at the start.

Ill show you both examples, apologies im working on my phone so i am limited in my typing.

Arraylist<sceneObj> objects = new ArrayList<sceneObj>();
Player player;

void setup(){
   player = new Player(random(400),random(400));
   for(int i=0;i<10;i++){
      sceneObj object = new sceneObj(random(400),random(400)); 
objects.add(object);
   }
   size(400,400);
}

void draw(){
   player.draw();
   for(int i=0;i<10;i++){
      sceneObj o = objects.get(i);

      o.draw();

      if(collide()) o.col = color(0);
      else o.col = color(255);
   }

   
}

Class Player{
   float x,y;
   boolean collide;
   color col = color(255);
Player(float x, float y){
   this.x = x;
   this.y = y;
}

void draw(){
   fill(255,0,0);
   rect(x,y,20,40);
}


void update(){

  if(keyPressed&&keyCode==left arrow){
     x-=5;
  }
  if(keyPressed&&keyCode==right arrow){
     x+=5;
  }
};
};

Class sceneObj{
   float x,y;
   boolean collide;
   color col = color(255);
sceneObj (float x, float y){
   this.x = x;
   this.y = y;
}

void draw(){
   fill(col);
   rect(x,y,20,20);
}

void collide(){
   return player.x>x&&player.x<x+20&&player.y>y&&player.y<y+20
}

I think that should work the only thing you need to do is find the keycode for the arrows and sub them into the key part, and add the y key if statements.

I might have a few other errors as this is untested code.

For more advanced collisions you may want to read up