Bot Battle Controller

import java.io.*;
import java.util.*;

public class BotBattleController {
    public static void main(String[] args){
        //Uncomment the below line to redirect the output to a text file
        //try{System.setOut(new PrintStream("battle.txt"));}catch(FileNotFoundException e){}
        Random r=new Random(System.currentTimeMillis()%1000);
        int turns;
        final int maxturns=turns=1000;
        List<Bot> bots=new ArrayList<Bot>(){
            private static final long serialVersionUID = 1L;
            public String toString(){
                String s="";
                for(Bot b:this){
                    if(b!=null)s+=b+",";
                }
                return s.substring(0, s.length()-1);
            }
        };
        /*edit and uncomment these lines as needed*/
        //(new BotOneClass()).register(bots);
        //(new BotTwoClass()).register(bots);
        //(new BotThreeClass()).register(bots);
        /*Don't edit after this point*/
        int[][] map=new int[64][64];
        for(int x=0;x<64;x++){
            map[x]=new int[64];
            for(int y=0;y<64;y++){
                map[x][y]=0;
            }
        }
        int i=5+r.nextInt(100);
        for(int j=0;j<i;j++){
            int x=r.nextInt(64),y=r.nextInt(64);
            map[x][y]=-1;
        }
        for(Bot b:bots){
            boolean a=true;
            while(a){
                int x=r.nextInt(64),y=r.nextInt(64);
                if(map[x][y]!=0)continue ;
                map[x][y]=b.id();
                b.p=new Bot.Position(x,y);
                a=false;
            }
        }
        System.out.println("Bots loaded.");
        boolean running=true;
        while(running&&turns>0){
            turns--;
            for(Bot b:bots){
                if(b==null)continue ;
                Bot.Action s;
                long k=System.nanoTime();
                try{s=b.action(copy(map));}catch(Exception e){
                    e.printStackTrace(System.out);
                    bots.set(bots.indexOf(b), null);
                    System.out.println(b+" threw an exception, and has been eliminated on turn "+(maxturns-turns)+".");
                    break ;
                }
                k=(System.nanoTime()-k);
                System.out.println(b+"("+b.p.x+","+b.p.y+"):"+s+" ("+k/1000+"us)");
                k/=1000000;
                Bot.Position p=b.p;
                int x=p.x;
                int y=p.y;
                map[x][y]=0;
                if(k>50){
                    bots.set(bots.indexOf(b), null);
                    System.out.println(b+" took too long to respond, and has been eliminated on turn "+(maxturns-turns)+".");
                    break ;
                }
                if(s==Bot.Action.MINE){
                    s=(new Bot.Action[]{Bot.Action.DOWN,Bot.Action.LEFT,Bot.Action.RIGHT,Bot.Action.UP})[r.nextInt(4)];
                    map[x][y]=-1;
                }
                if(s==Bot.Action.LEFT){
                    x--;
                }
                if(s==Bot.Action.RIGHT){
                    x++;
                }
                if(s==Bot.Action.UP){
                    y--;
                }
                if(s==Bot.Action.DOWN){
                    y++;
                }
                if(y<0||y>=64||x<0||x>=64){
                    bots.set(bots.indexOf(b), null);
                    System.out.println(b+" left the map on turn "+(maxturns-turns)+".");
                    break ;
                }
                if(map[x][y]==-1){
                    bots.set(bots.indexOf(b), null);
                    map[x][y]=0;
                    System.out.println(b+" was killed by a mine on turn "+(maxturns-turns)+".");
                    break ;
                }
                if(map[x][y]!=0&&map[x][y]!=b.id()){
                    Bot c=bots.get(map[x][y]-1);
                    bots.set(bots.indexOf(c), null);
                    System.out.println(c+" was killed by "+b+" on turn "+(maxturns-turns)+".");
                    map[x][y]=b.id();
                    p.x=x;p.y=y;
                    break;
                }
                p.x=x;p.y=y;
                map[x][y]=b.id();
            }
            int c=0;
            Bot w=null;
            for(Bot b:bots){
                if(b!=null){
                    c++;
                    w=b;
                }
            }
            if(c<=1){
                running=false;
                if(w==null)System.out.println("All bots have lost.");
                if(w!=null)System.out.println(w+" has won in "+(maxturns-turns)+" steps.");
            }
        }
        if(turns==0)System.out.println("Time ran out. "+bots+" are still standing.");
        System.out.close();
    }
    public static int[][] copy(int[][] a){
        int[][] o=new int[64][64];
        for(int x=0;x<64;x++){
            for(int y=0;y<64;y++){
                o[x][y]=a[x][y];
            }
        }
        return o;
    }
}