// ReSharper disable once UnusedMethodReturnValue.Global
public List <AShip> Retrieve(List <AShip> returnObjects, AShip ship)
{
var index = GetIndex(ship);
if (index != -1 && mNodes[0] != null)
{
mNodes[index].Retrieve(returnObjects, ship);
}
returnObjects.AddRange(mObjects);
return(returnObjects);
}
/// <summary>
/// Inserts the object to the correct Node.
/// </summary>
public void Insert(AShip ship)
{
if (mNodes[0] != null)
{
var index = GetIndex(ship);
if (index != -1)
{
mNodes[index].Insert(ship);
return;
}
}
mObjects.Add(ship);
if (mObjects.Count > MaxObjects && mLevel < MaxLevels)
{
if (mNodes[0] == null)
{
Split();
}
var i = 0;
while (i < mObjects.Count)
{
var index = GetIndex(mObjects[i]);
if (index != -1)
{
mNodes[index].Insert(mObjects[i]);
mObjects.RemoveAt(i);
}
else
{
i++;
}
}
}
}
/// <summary>
/// Returns the index of the node, where the Ship is. -1 if its between 2 nodes.
/// </summary>
private int GetIndex(AShip ship)
{
int index = -1;
double verticalMidpoint = mBounds.X + (mBounds.Width / 2);
double horizontalMidpoint = mBounds.Y + (mBounds.Height / 2);
// Object can completely fit within the top quadrants
bool topQuadrant = (ship.Position.Y < horizontalMidpoint && ship.Position.Y + ship.mShipTexture.Height < horizontalMidpoint);
// Object can completely fit within the bottom quadrants
bool bottomQuadrant = (ship.Position.Y > horizontalMidpoint);
// Object can completely fit within the left quadrants
if (ship.Position.X < verticalMidpoint && ship.Position.X + ship.mShipTexture.Width < verticalMidpoint)
{
if (topQuadrant)
{
index = 1;
}
else if (bottomQuadrant)
{
index = 2;
}
}
// Object can completely fit within the right quadrants
else if (ship.Position.X > verticalMidpoint)
{
if (topQuadrant)
{
index = 0;
}
else if (bottomQuadrant)
{
index = 3;
}
}
return(index);
}
public void Attack(AShip target)
{
CurrentBState = ShipBattleState.Attacking;
TargetShip = target;
}
public void Attack(AShip targetShip)
{
TargetShip = targetShip;
CurrentBState = ShipBattleState.Attacking;
}
public void Enter(AShip ship)
{
CurrentBState = ShipBattleState.Entering;
TargetShip = ship;
}
/// <summary>
/// Compares two ships by their distance to the fleets main position.
/// </summary>
private int CompareShipsByDistance(AShip ship1, AShip ship2)
{
return(Vector2.Distance(Position, ship1.Position) > Vector2.Distance(Position, ship2.Position) ? 1 : 0);
}
public void Enter(AShip targetShip)
{
TargetShip = targetShip;
CurrentBState = ShipBattleState.Entering;
}