#Red Team - BouncerBot

    function getDir(diff){
      return (diff < 0) ? -1 : ((diff > 0) ? 1 : 0);
    }
    function randInt(max){
      return Math.ceil(Math.random() * max);
    }
    var me = 29750;
    var moves = [
      [4,3,3],
      [2,0,1],
      [5,5,6]
    ]; // Directions: -1 = up/left, 1 = down/right, 0 = none
    if(x === 0){
      moves[0] = [3,3,3];
      moves[2] = [6,6,6];
    } else if(x == 127){
      moves[0] = [4,4,4];
      moves[2] = [5,5,5];
    }
    for(var i in eNear){
      var xDiff = eNear[i].x - x,
          yDiff = eNear[i].y - y;
      if(xDiff >= -1 && xDiff <= 1 && yDiff >= -1 && yDiff <= 1){
        // If the enemy is directly adjacent, attack
        setMsg('');
        return moves[yDiff + 1][xDiff + 1];
      }
    }
    if(eNear.length > 0){
      var xDiff = eNear[0].x - x,
          yDiff = eNear[0].y - y;
      // If it can't attack, move toward the enemy.
      if(Math.abs(yDiff) == 2){
        if(xDiff >= -2 && xDiff <= 0) return 1;
        else if(xDiff == 2 || xDiff === 1) return 2;
      }
      return moves[getDir(yDiff) + 1][getDir(xDiff) + 1];
    }
    var msg = getMsg(me) || '',
        newDir = parseInt(msg);
    if(msg === ''){
      newDir = randInt(4) + 2;
    }
    var isEndgame = move > 512;
         if(x === 0 || (isEndgame && x < 11)) newDir = (msg == 4) ? 3 : 6;
    else if(x == 127 || (isEndgame && x > 116)) newDir = (msg == 3) ? 4 : 5;
    else if((!isEndgame && y < 11) || y === 0) newDir = (msg == 4) ? 5 : 6;
    else if((!isEndgame && y > 116) || y == 127) newDir = (msg == 5) ? 4 : 3;
    if(newDir != msg) setMsg(newDir.toString());
    return newDir;

My bot bounces from wall to wall (not exactly, so it covers different ground) looking for enemies. If it gets one in its range, it attacks, drags them toward a wall, and tries to take them out (think bouncer at a club).