Red Team - SeekerBot

var myself = 38926;
var messages = getMsg(myself).split(';');
var minimalDistanceToFriend = 2;
var chosenMove = null;
var newDistanceToFriend = null;
var minimalVerticalDistanceToEnemy = null, minimalHorizontalDistanceToEnemy = null;
var closestFriend = null;
var closestEnemy = null;
var possibleVictims = [];
var possibleMoves = [
    {newX: x, newY: y},
    {newX: x + 1, newY: y},
    {newX: x - 1, newY: y},
    {newX: x + 1, newY: y - 1},
    {newX: x - 1, newY: y - 1},
    {newX: x - 1, newY: y + 1},
    {newX: x + 1, newY: y + 1}
];

var calculateDistance = function(x1, y1, x2, y2) {
    return Math.sqrt(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2));
};

var iAmInDanger = function(meX, meY, himX, himY) {
    return (Math.abs(meY - himY) === 1 && Math.abs(meX - himX) <= 1);
};

var iCanKillHim = function(meX, meY, himX, himY) {
    return (Math.abs(meX - himX) === 1 && Math.abs(meY - himY) <= 1);
};

var setMessage = function() {
    messages[0] = ("000" + x).substr(-3, 3);
    messages[1] = ("000" + y).substr(-3, 3);
    setMsg(messages.join(';'));
}

for (i = 0; i < possibleMoves.length; i++) {
    if (possibleMoves[i].newX < 0 || possibleMoves[i].newY < 0 || possibleMoves[i].newX > 127 || possibleMoves[i].newY > 127) {
        possibleMoves[i] = null;
    }
}

for (var i = 0; i < eNear.length; i++) {
    if (closestEnemy === null || calculateDistance(x, y, closestEnemy.x, closestEnemy.y) > calculateDistance(x, y, eNear[i].x, eNear[i].y)) {
        closestEnemy = eNear[i];
    }
    if (Math.abs(x - eNear[i].x) <= 2 && Math.abs(y - eNear[i].y) <= 2) {
        possibleVictims.push(eNear[i]);
    }
}

for (i = 0; i < tNear.length; i++) {
    if (closestFriend === null || calculateDistance(x, y, closestFriend.x, closestFriend.y) > calculateDistance(x, y, tNear[i].x, tNear[i].y)) {
        closestFriend = tNear[i];
    }
}    

for (i = 0; i < possibleMoves.length; i++) {
    for (var j = 0; j < possibleVictims.length; j++) {
        if (possibleMoves[i] !== null && iAmInDanger(possibleMoves[i].newX, possibleMoves[i].newY, possibleVictims[j].x, possibleVictims[j].y)) {
            possibleMoves[i] = null;
        }
    }
}

for (i = 0; i < possibleMoves.length; i++) {
    for (j = 0; j < possibleVictims.length; j++) {
        if (possibleMoves[i] !== null && possibleMoves[i].newX === possibleVictims[j].x && possibleMoves[i].newY === possibleVictims[j].y) {
            messages[2] = 0;
            setMessage();
            return i;
        }
    }
}

if (possibleVictims.length > 0) {
    if (iAmInDanger(x, y, possibleVictims[0].x, possibleVictims[0].y)) {
        if (closestFriend !== null) {
            for (i = 0; i < possibleMoves.length; i++) {
                if (possibleMoves[i] !== null) {
                    var distance = calculateDistance(possibleMoves[i].newX, possibleMoves[i].newY, closestFriend.x, closestFriend.y);
                    if (newDistanceToFriend === null || (distance < newDistanceToFriend && distance >= minimalDistanceToFriend)) {
                        newDistanceToFriend = distance;
                        chosenMove = i;
                    }
                }
            }
            messages[2] = 0;
            setMessage();
            return chosenMove;
        }
        else {
            var aggressiveMoves = [];
            var randomMoves = [];
            
            for (i = 0; i < possibleMoves.length; i++) {
                if (possibleMoves[i] !== null) {
                    if (iCanKillHim(possibleMoves[i].newX, possibleMoves[i].newY, possibleVictims[0].x, possibleVictims[0].y)) {
                        aggressiveMoves.push(i);
                    }
                    randomMoves.push(i);
                }
            }
            var approachCount = messages[2] || 0;
            if (approachCount < 5 && aggressiveMoves.length > 0) {
                messages[2] = approachCount + 1;
                chosenMove = aggressiveMoves[Math.floor(Math.random() * aggressiveMoves.length)];
                setMessage();
                return chosenMove;
            } 
            else {
                chosenMove = randomMoves[Math.floor(Math.random() * randomMoves.length)];
                setMessage();
                return chosenMove;
            }
        }
    }
}

if (closestEnemy != null) {
    for (i = 1; i < possibleMoves.length; i++) {
        if (possibleMoves[i] !== null) {
            var verticalDistance = Math.abs(possibleMoves[i].newY - closestEnemy.y);
            var horizontalDistance = Math.abs(possibleMoves[i].newX - closestEnemy.x);
            if (minimalVerticalDistanceToEnemy === null || verticalDistance <= minimalVerticalDistanceToEnemy) {
                if (minimalVerticalDistanceToEnemy !== null && verticalDistance === minimalVerticalDistanceToEnemy) {
                    if (minimalHorizontalDistanceToEnemy === null || horizontalDistance <= minimalHorizontalDistanceToEnemy) {
                        minimalHorizontalDistanceToEnemy = horizontalDistance;
                        chosenMove = i;
                    }
                }
                else {
                    minimalVerticalDistanceToEnemy = verticalDistance;
                    minimalHorizontalDistanceToEnemy = horizontalDistance;
                    chosenMove = i;
                }                                        
            }
        }            
    }
    messages[2] = 0;
    setMessage();
    return chosenMove;
}

var seekStatus = messages[3] || 0;
var seekCount = messages[4] || 0;
seekStatus = parseInt(seekStatus, 10);
seekCount = parseInt(seekCount, 10);

switch (seekStatus) {
    case 0:
        if (x < 16) {
            seekCount = 0;
            if (y > 111) {
                seekStatus = 4;
            }
            else {
                seekStatus = 1;
            }                
        }
        else {
            chosenMove = 2;
        }
        break;
    case 1:
        seekCount++;
        if (y > 111 || seekCount > 31) {
            seekStatus = 2;
        }            
        else {
            if (seekCount % 2 === 0) {
                chosenMove = 5;
            }
            else {
                chosenMove = 6;
            }
        }
        break;
    case 2:
        if (x > 111) {
            seekCount = 0;
            if (y > 111) {
                seekStatus = 4;
            }
            else {
                seekStatus = 3;
            }                   
        }
        else {
            chosenMove = 1;
        }
        break;
    case 3:
        seekCount++;
        if (y > 111 || seekCount > 31) {
            seekStatus = 0;
        }
        else {
            if (seekCount % 2 === 0) {
                chosenMove = 5;
            }
            else {
                chosenMove = 6;
            }
        }
        break;
    case 4:
        seekCount++;
        if (y < 16) {
            if (x > 63) {
                seekStatus = 0;
            }
            else {
                seekStatus = 2;
            }
        }
        else {
            if (seekCount % 2 === 0) {
                chosenMove = 3;
            }
            else {
                chosenMove = 4;
            }
        }
        break;
}

messages[2] = 0;
messages[3] = seekStatus;
messages[4] = seekCount;    

setMessage();
return chosenMove;

The highest priority of SeekerBot is survival. Therefore, it will only consider moves which will not put it into jeopardy of being killed in the next turn (as long as such moves exist).

When no opponents are in view, it will move in a pattern over the battlefield, which will ensure that most of the ground will regularly be in viewing distance.

If Seekerbot spots an enemy, it will move towards it. If it can kill an enemy, it will do so as long as the move is save.

If it cannot kill an enemy but the enemy is in a position to kill it on its next turn, SeekerBot will try to lure the enemy towards a friend (if one is visible). If no team member is in view, it will try to move into a position, where it can kill the enemy in the next turn. If this does not work 5 times in a row, it will switch tactics and start moving in a random pattern, possibly closing in on the enemy in the next round.

For what it's worth, it will use the first 7 characters of the message to shout its own position in the format "x;y" (where x and y are zero padded).

Its certainly not the cleanest code, but it seems to do what I expected of it.