import java.util.*;
import java.awt.*;

/**
   A tanker is a kind of thing that wanders across the screen, spilling
   oil blobs into the environment.
   @author Ben Dugan, Hal Perkins
   CSE 142 Summer 2001, Homework 6
*/
public class Tanker implements Thing {
  private int x, y;
  private int blobsPerCycle;

  /** Create a new Tanker that spills the given number of blobs per
      cycle, and at the given x y location*/
  public Tanker(int blobsPerCycle, int x, int y) {
    this.x = x;
    this.y = y;
    this.blobsPerCycle = blobsPerCycle;
  }

  /** Always move to the right one pixel. */
  public void move() {
    this.x = this.x + 1;
  }

  /** On each cycle some number of blobs are spilled into the environment. */
  public void spawn(ArrayList v) {
    for (int i=0; i<blobsPerCycle; i++) {
    v.add(new OilBlob(this.x, this.y));
    }
  }

  /** A tanker displays itself as a pointy red rectangle */
  public void display(GWindow g) {
    g.display(new Rectangle(this.x, this.y, 50, 15, Color.red, true));
    g.display(new Triangle(this.x+50, this.y, this.x+50, this.y+15, 
               this.x + 65, this.y + 7, Color.red, true));
  }

  /** A tanker consumes nothing. */
  public boolean consumes(String kindOfThing) {
    return false;
  }

  /** Tanker consumes nothing, so this does nothing. */
  public void consume(String kindOfThing) {}

  /** Answers the kind of thing, ie. "Tanker". */
  public String kindOfThing() { return "Tanker"; }

  /** Answers the x position. */
  public int getX() { return this.x; }

  /** Answers the y position. */
  public int getY() { return this.y; }

  /** Answers its name and position. */
  public String toString() {
    return "Tanker: (" + this.x + "," + this.y + ")";
  }
}