Terrain terrain;
Marble marble;
Vector marbles;
float camX=0,camY=0;

void setup() {
  size(600,450,P3D);

  // setup world:
  terrain = new Terrain(20,20,40);
  //terrain.flat();
  terrain.makeCosHole(80);
  terrain.addRandom(40);
  terrain.lower(100);
  //

  camX=terrain.fullWid/2.0;
  camY=-150;

  marbles = new Vector();
  for (int i=0;i<1500;i++) {
    marble = new Marble(5,1.0);
    //marble.centerOn(terrain);
    marble.putSomewhereOn(terrain);
    marbles.add(marble);
  }
}

void keyPressed() {
  if (key==' ') {
    for (int i=0;i<marbles.size();i++) {
      if (random(1.0)<0.3) {
        marble = (Marble)(marbles.elementAt(i));
        marble.ym-=1.5+random(3);
      }
    }
  }
}

void draw() {
  background(32);
  if (mousePressed) {
    camX+=pmouseX-mouseX;
    camY+=pmouseY-mouseY;
  }
  camera(camX,camY,3*terrain.fullDep/2.0,terrain.fullWid/2.0,0,terrain.fullDep/2.0,0,1,0);
  //terrain.lightAll();
  //terrain.draw();
  for (int i=0;i<marbles.size();i++) {
    marble = (Marble)(marbles.elementAt(i));
    //marble.shiftTail();
    marble.move(terrain);
    marble.draw();
  }
}