/**
 *  Hunter-Prey simulator version 1.1
 *  Copyright 2011 Kenneth Mackin
 */
public class PreyAgent extends Agent{
    int VIEWRANGE = 4;

    PreyAgent(Field field, int x, int y, int index){
	super(field, x, y, index);
    }

    public void move(){
	int xdir=0;
	int ydir=0;

	for(int i=1; i< field.getAgents(); i++){
	    if((Math.abs(field.getX(i) - this.x) <= VIEWRANGE) &&
	       (Math.abs(field.getY(i) - this.y) <= VIEWRANGE) ){
		if(field.getX(i)<(this.x)){
		    xdir++;
		}else if(field.getX(i)>(this.x)){
		    xdir--;
		}
		if(field.getY(i)<(this.y)){
		    ydir++;
		}else if(field.getY(i)>(this.y)){
		    ydir--;
		}
	    }
	}

	if(xdir<0){ this.x--; }else if(xdir>0){ this.x++; }
	if(ydir<0){ this.y--; }else if(ydir>0){ this.y++; }
    }
}