/// <summary>
/// Find best step for victim catching
/// </summary>
private Position FindBestStepForCatching(Carnivore carnivore, Field field)
{
var minDistance = double.MaxValue;
var bestStep = new Position(0, 0);
var nextStep = new Position();
for (nextStep.X = -carnivore.MaxSpeed; nextStep.X <= carnivore.MaxSpeed; nextStep.X++)
{
for (nextStep.Y = -carnivore.MaxSpeed; nextStep.Y <= carnivore.MaxSpeed; nextStep.Y++)
{
var newPosition = carnivore.Position.Clone().Add(nextStep);
if (!_validator.PositionIsOutOfField(field, newPosition) &&
(!_validator.PositionIsTakenByCarnivore(field, newPosition) || carnivore.Position.Equals(newPosition)))
{
var distance = _calculations.Distance(newPosition, carnivore.ClosestEnemy.Position);
if (distance < minDistance)
{
minDistance = distance;
bestStep = nextStep.Clone();
if (carnivore.ClosestEnemy.Position.Equals(newPosition))
{
break;
}
}
}
}
}
return(bestStep);
}
/// <summary>
/// Find best step for escaping
/// </summary>
private Position FindBestStepToEscape(Herbivore herbivore, Field field)
{
var maxDistance = double.MinValue;
var bestStep = new Position(0, 0);
var nextStep = new Position();
for (nextStep.X = -herbivore.MaxSpeed; nextStep.X <= herbivore.MaxSpeed; nextStep.X++)
{
for (nextStep.Y = -herbivore.MaxSpeed; nextStep.Y <= herbivore.MaxSpeed; nextStep.Y++)
{
var newPosition = herbivore.Position.Clone().Add(nextStep);
if (!_validator.PositionIsOutOfField(field, newPosition) &&
(!_validator.PositionIsTaken(field, newPosition) || herbivore.Position.Equals(newPosition)))
{
var distance = _calculations.Distance(newPosition, herbivore.ClosestEnemy.Position);
if (distance > maxDistance)
{
maxDistance = distance;
bestStep = nextStep.Clone();
}
}
}
}
return(bestStep);
}
/// <summary>
/// For every animal in 'FriendsList' locate closest animal in 'EnemiesList'
/// </summary>
private void LocateEnemiesForOneSpecie(IEnumerable <Animal> FriendsList, IEnumerable <Animal> EnemiesList)
{
foreach (var currentAnimal in FriendsList)
{
currentAnimal.ClosestEnemy = null;
var minDistance = double.MaxValue;
foreach (var enemy in EnemiesList)
{
var distance = _calculations.Distance(currentAnimal, enemy);
if (distance <= currentAnimal.VisionRange && distance < minDistance)
{
minDistance = distance;
currentAnimal.ClosestEnemy = enemy;
}
}
}
}
