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sketch_code.pde

Liquid liquid;
Surface srf;

int C_BALL_COUNT = 10;
int C_LIQUID_WIDTH = 300;
int C_LIQUID_HEIGHT = 50;
Ball[] balls = new Ball[C_BALL_COUNT];

PVector forceDownward = new PVector(0.0, 0.03); // just going down

void setup(){
   size(displayWidth/2, displayHeight/2);
   liquid = new Liquid(width/2, height/2, C_LIQUID_WIDTH, C_LIQUID_HEIGHT, 0.1);
   srf = new Surface();
   initBalls(balls);
   
}



void draw(){
   background(128);
   balls_update(liquid);
   liquid.display();
   balls_display();
  
}


void initBalls(Ball[] balls){
   for(int i = 0 ; i < balls.length ; i++){
      balls[i] = new Ball(random(width), random(height/4), random(5,10) ,random(10,30));
   }
}


void balls_update(Liquid l){
  
   for(Ball b: balls){
      b.applyForce(forceDownward); // this should be gravity force applied. But how do we calculate this force? For simplicity I can just apply simple constant force (alike to the wind).
      //b.applyDrag(l);
      if ( liquid.intersectsWith(b) ){
          //println(b + " intersects with liquid");
          b.applyFriction(srf);   
      }
      
      b.update();
   }
  
}


void balls_display(){
   for(Ball b : balls){
      b.display();
   }
}

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