// Attraction
// Daniel Shiffman <http://www.shiffman.net>

// A class to describe a currency in our world, has vectors for location, velocity, and acceleration
// Also includes scalar values for mass, maximum velocity, and elasticity

class Currency {
  PVector loc;
  PVector vel;
  PVector acc;
  float mass;
  float max_vel;
  float bounce = 1.0; // How "elastic" is the object
  String name;
  
  PImage bill;
  color c;

    
  Currency(PVector a, PVector v, PVector l, float m_, String n ) {
    acc = a.get();
    vel = v.get();
    loc = l.get();
    mass = m_;
    name = n;
    max_vel = 16.0;
  
    //println(name + ".jpg");
   
    bill = loadImage(name + ".jpg");  //load the image
    
    c = bill.get(50, 25);  //get the color exactly in the middle of the image
    
    bill.resize(int(mass), 0);  //resize according to mass

   
  }
  
  PVector getLoc() {
    return loc;
  }

  PVector getVel() {
    return vel;
  }
  float getMass() {
    return mass;
  }

  void applyForce(PVector force) {
    force.div(mass);
    acc.add(force);
    if (!showVectors) {
      drawVector(force,loc,1000);
    }    
  }

  // Main method to operate object
  void go() {
    update();
    render();
  }
  
  // Method to update location
  void update() {
    vel.add(acc);
    vel.limit(max_vel);
    loc.add(vel);
    // Multiplying by 0 sets the all the components to 0
    acc.mult(0);
  }
  
  // Method to display
  void render() {
    ellipseMode(CENTER);
    stroke(255);
    fill(255,100);
    //ellipse(loc.x,loc.y,mass*2,mass*2);
    if (!showVectors) {
      drawVector(vel,loc,20);
    }
   
   if (showCrosshairs == true) {
     
     //showSparkles = false;  //to make sure we never have the two showing at the same time
     //showMoney = false;
     
     stroke(c, 255);  //draw the crosshairs
     line(loc.x, 0, loc.x, height);
     line(0, loc.y, width, loc.y);
     
     //line(loc.x, width, loc.y, height);
     //line(loc.y, 0, loc.x, height);
     
     //line(0,0, loc.x, loc.y);
     //line(width, 0, loc.x, loc.y);
     //line (0, height, loc.x, loc.y);
     //line (width, height, loc.x, loc.y);
     
     
   }//end if
   
   if (showSparkles == true) {
     
     //showCrosshairs = false;  //to make sure we never have the two showing at the same time
     //showMoney = false;
     
     pushMatrix();    //rotate it
    
      translate(loc.x,loc.y);
      rotate(vel.heading2D());
    
     stroke(c, 255);  //draw the crosshairs
     line(0, -200, 0, 200);
     line(200, 0, -200, 0);
     
    
    popMatrix();
     
   }//end if
   
   if (showMoney == true)   {
     
      //showSparkles = false;  //to make sure we never have the two showing at the same time
     //showCrosshairs = false;
     
     pushMatrix();    //rotate it
    
    translate(loc.x,loc.y);
    rotate(vel.heading2D());
    imageMode(CENTER);
    image(bill, 0, 0);
    
    popMatrix();
    
   }//end else
    
    if (showName == true) {
    
    fill(0); //display the name of the item
    textFont(cFont, 10); 
    text(name, loc.x,loc.y);
    }
   
  }
}