import traer.physics.*;

ParticleSystem physics;

Particle p;
Particle anchor;
Spring s;

PFont f;


int kolor1=20,kolor2=200,kolor3=180;
int points=0;

void setup()
{
  size( 400, 400 );
  smooth();
  //fill( 60 );
  frameRate( 24 );
  colorMode(RGB, 255, 255, 255, 50);

  ellipseMode( CENTER );
        
  physics = new ParticleSystem( 2.0, 0.10 );
  
  p = physics.makeParticle( 1.0, width/2-100, height/2, 0 );
  anchor = physics.makeParticle( 1.0, width/2, height/2, 0 );
  anchor.makeFree(); 
  //s = physics.makeSpring( p, anchor, 1.0, 0.1, 100 );
f = loadFont("CourierNew36.vlw");
  textFont(f, 16);

}

void draw()
{

int pos_x,pos_y;


pos_x=int(p.position().x());
pos_y=int(p.position().y());
int bad;
bad=0;
  if ( !mousePressed )
    physics.advanceTime( 0.5 );
  else
  {
    p.moveTo( mouseX, mouseY, 0 );
    p.setVelocity( (mouseX - pmouseX), (mouseY - pmouseY), 0 );  // this is so you can throw it...
  }

// If we cross the line - back to start.  
  if (mouseX > 300 ) {
        bad=1;
  } else {
    // If we hit the square
    if ((p.position().x() > 350 ) && (p.position().x() < 400) && (p.position().y() > 150 ) && (p.position().y() < 200 ) ) {
      bad=2;
     } else {
       // y axis outside window
      if (p.position().y() > height ) {
        bad=3;
      }
    } 
    }
    
    
 background( 255 );
 fill(120,100,50);
 rect(350,150,50,50);
 line(300,0,300,400);

fill(0,0,0); 
text("Mass:"+p.mass(),5,20);
text("Press Z/X to -/+ mass",96,20);
text("Throw the ball to the square",10,390);
text("Points: "+points,305,390);

if (keyPressed){
//  if ((p.mass()==-1) || (p.mass()==1 ))
 // {
   //p.setMass(1); 
  //}
  
  if (key=='z') {
    if (p.mass()==1 ) {
      p.setMass(-2); 
    } else {
      p.setMass(p.mass()-1);
    }
  }
  
if (key=='x') {
if (p.mass()==-1 ) {
 p.setMass(2); 
} else {
     p.setMass(p.mass()+1);
}

}



}

if ( bad == 0 ) {
 fill(kolor1,kolor2,kolor3);
 ellipse( p.position().x(), p.position().y(), 20, 20 );
} else {
 if ( bad == 1 ) {
   // cross the line
   pos_x=100;
   pos_y=200;
   fill(kolor1,kolor2,kolor3);
   text("DO NOT CROSS THE LINE",50,350);
   ellipse( pos_x, pos_y, 20, 20 );
   p.moveTo( pos_x, pos_y, 0 );
   p.setVelocity( 0, 0, 0 );  // stop velocity
   kolor1=int(random(1,250));
   kolor2=int(random(1,250));
   kolor3=int(random(1,250));
 } else if ( bad == 2 ) {
   // ball hit in square
   pos_x=100;
   pos_y=200;
   fill(kolor1,kolor2,kolor3);
   ellipse( pos_x, pos_y, 20, 20 );
   p.moveTo( pos_x, pos_y, 0 );
   p.setVelocity( 0, 0, 0 );  // stop velocity
   kolor1=int(random(1,250));
   kolor2=int(random(1,250));
   kolor3=int(random(1,250)); 
   points++;
 } else if ( bad == 3 ) {
// Ball outside y axis
 pos_x=100;
   pos_y=200;
   fill(kolor1,kolor2,kolor3);
   ellipse( pos_x, pos_y, 20, 20 );
   p.moveTo( pos_x, pos_y, 0 );
   p.setVelocity( 0, 0, 0 );  // stop velocity
   kolor1=int(random(1,250));
   kolor2=int(random(1,250));
   kolor3=int(random(1,250)); 
   
 }
}
 
  

{

  
}
  
  
  //line( p.position().x(), p.position().y(), anchor.position().x(), anchor.position().y() );
//  ellipse( anchor.position().x(), anchor.position().y(), 100, 1 );
  

 
}
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