function Utils::getValidOffsetTile(tile, offsetX, offsetY) {
    local oldX = AIMap.GetTileX(tile);
	local oldY = AIMap.GetTileY(tile);
	
	local newX = oldX;
	local newY = oldY;
	
	if (offsetX > 0) {
	    for (local x = offsetX; x > 0; x--) {
		    if (AIMap.IsValidTile(AIMap.GetTileIndex(newX + 1, newY))) {
			    newX = newX + 1;
			}
		}
	} else {
	    for (local x = offsetX; x < 0; x++) {
		    if (AIMap.IsValidTile(AIMap.GetTileIndex(newX - 1, newY))) {
			    newX = newX - 1;
			}
		}
	}
	
	if (offsetY > 0) {
	    for (local y = offsetY; y > 0; y--) {
		    if (AIMap.IsValidTile(AIMap.GetTileIndex(newX, newY + 1))) {
			    newY = newY + 1;
			}
		}
	} else {
	    for (local y = offsetY; y < 0; y++) {
		    if (AIMap.IsValidTile(AIMap.GetTileIndex(newX, newY - 1))) {
			    newY = newY - 1;
			}
		}
	}
	
	return AIMap.GetTileIndex(newX, newY);
}