class Attractor {

public int x;

public int y;

public int dx;

public int dy;

public float r, g, b;

public Attractor() {

this.x = die.nextInt(halfW);

this.y = die.nextInt(halfH);

this.dx =- 2 + die.nextInt(4);

this.dy =- 2 + die.nextInt(4);

this.r = (float)die.nextInt(255);

this.g = (float)die.nextInt(255);

this.b = (float)die.nextInt(255);

}

public void move() {

// move bubble

// makes it a bit more lava-lampy by emphasising dy

this.x += 1.0 * this.dx;

this.y += 4.0 * this.dy;

if (this.x < 0 || this.x > halfH) this.dx =- this.dx;

if (this.y < 0 || this.y > halfW) this.dy =- this.dy;

}

public float distanceTo(int xx, int yy) {

// Euclidian Distance

return distlookup[Math.abs(xx - this.x)][Math.abs(yy - this.y)];

}

}