public void Update(GameTime gameTime, List <Controller> AllControllers, SpawnRateController.DataPoint Statistics)
{
List <Unit_KDTree> EnemyTrees = new List <Unit_KDTree>();
for (int i = 0; i < AllControllers.Count; i++)
{
if (AllControllers[i].Allegiance != Allegiance)
{
EnemyTrees.Add(AllControllers[i].SpatialTree);
}
}
for (int i = 0; i < units.Count; i++)
{
units[i].Update(gameTime, EnemyTrees, SpatialTree);
if (units[i].HitPoints <= 0.0)
{
units.RemoveAt(i);
}
}
spawnTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (spawnTimer <= 0.0)
{
spawnTimer = Manager.GeneralSpawnTimer;
units.Add(new Unit(Manager.terrain.GetRandomPosition()
, (Unit.StatDistribution)MyGame.random.Next((int)Unit.StatDistribution.End)
, (Unit.BehaviorType)MyGame.random.Next((int)Unit.BehaviorType.End)));
SpatialTree = new Unit_KDTree(-1, units.ToArray());
}
}
/// <summary>
/// Organizes Units by X Y Z coordinates
/// More efficient to recreate a tree rather than update it
/// </summary>
/// <param name="ParentSplitDimensionIndex">Outside of this constructor, inputs should be -1</param>
/// <param name="UnitList">Should be converted from a List</param>
public Unit_KDTree(int ParentSplitDimensionIndex, Unit[] UnitList)
{
SplitDimensionIndex = (ParentSplitDimensionIndex + 1) % 3;
if (UnitList.Length > 2)
{
int MedianIndex = UnitList.Length / 2;
PartialSortListAt(MedianIndex, SplitDimensionIndex, ref UnitList);
SplitPosition = UnitList[MedianIndex].IndexablePosition[SplitDimensionIndex];
Unit[] LowerList = new Unit[MedianIndex + 1];
Unit[] UpperList = new Unit[UnitList.Length - MedianIndex - 1];
Array.Copy(UnitList, 0, LowerList, 0, LowerList.Length);
Array.Copy(UnitList, MedianIndex + 1, UpperList, 0, UpperList.Length);
LessEqualNode = new Unit_KDTree(SplitDimensionIndex, LowerList);
GreaterNode = new Unit_KDTree(SplitDimensionIndex, UpperList);
}
else
{
Constituents = UnitList;
isLeafNode = true;
}
}
/// <summary>
/// Organizes Units by X Y Z coordinates
/// More efficient to recreate a tree rather than update it
/// </summary>
/// <param name="ParentSplitDimensionIndex">Outside of this constructor, inputs should be -1</param>
/// <param name="UnitList">Should be converted from a List</param>
public Unit_KDTree(int ParentSplitDimensionIndex, Unit[] UnitList)
{
SplitDimensionIndex = (ParentSplitDimensionIndex + 1) % 3;
if (UnitList.Length > 2)
{
int MedianIndex = UnitList.Length / 2;
PartialSortListAt(MedianIndex, SplitDimensionIndex, ref UnitList);
SplitPosition = UnitList[MedianIndex].IndexablePosition[SplitDimensionIndex];
Unit[] LowerList = new Unit[MedianIndex + 1];
Unit[] UpperList = new Unit[UnitList.Length - MedianIndex - 1];
Array.Copy(UnitList, 0, LowerList, 0, LowerList.Length);
Array.Copy(UnitList, MedianIndex + 1, UpperList, 0, UpperList.Length);
LessEqualNode = new Unit_KDTree(SplitDimensionIndex, LowerList);
GreaterNode = new Unit_KDTree(SplitDimensionIndex, UpperList);
}
else
{
Constituents = UnitList;
isLeafNode = true;
}
}
public void Update(GameTime gameTime, List<Controller> AllControllers, SpawnRateController.DataPoint Statistics)
{
List<Unit_KDTree> EnemyTrees = new List<Unit_KDTree>();
for (int i = 0; i < AllControllers.Count; i++)
{
if (AllControllers[i].Allegiance != Allegiance)
{
EnemyTrees.Add(AllControllers[i].SpatialTree);
}
}
for (int i = 0; i < units.Count; i++)
{
units[i].Update(gameTime, EnemyTrees, SpatialTree);
if (units[i].HitPoints <= 0.0)
{
units.RemoveAt(i);
}
}
spawnTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (spawnTimer <= 0.0)
{
spawnTimer = Manager.GeneralSpawnTimer;
units.Add(new Unit(Manager.terrain.GetRandomPosition()
, (Unit.StatDistribution)MyGame.random.Next((int)Unit.StatDistribution.End)
, (Unit.BehaviorType)MyGame.random.Next((int)Unit.BehaviorType.End)));
SpatialTree = new Unit_KDTree(-1, units.ToArray());
}
}
/// <summary>
/// With BuddyUp, the Unit moves (with a bias) towards the first ally Unit it encounters
/// The unit still targets the closest enemy Unit
/// </summary>
private void Behavior_BuddyUp(GameTime gameTime, List <Unit_KDTree> EnemyTrees, Unit_KDTree AllyTree)
{
DirectionTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (DirectionTimer <= 0.0)
{
DirectionTimer = 3.0;
TargetPosition = Manager.terrain.GetRandomPosition();
}
if (OtherTarget == null || OtherTarget.HitPoints <= 0.0)
{
OtherTarget = null;
Distance = float.PositiveInfinity;
AllyTree.FindNearestUnit(this, ref OtherTarget, ref Distance);
}
else
{
TargetPosition = Vector3.Lerp(TargetPosition, OtherTarget.Position, (float)gameTime.ElapsedGameTime.TotalSeconds);
}
Move(gameTime);
Attack(gameTime, EnemyTrees);
}
/// <summary>
/// By default, the Unit moves randomly and targets the closest enemy Unit
/// </summary>
private void Behavior_Default(GameTime gameTime, List <Unit_KDTree> EnemyTrees, Unit_KDTree AllyTree)
{
DirectionTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (DirectionTimer <= 0.0)
{
DirectionTimer = 5.0;
TargetPosition = Manager.terrain.GetRandomPosition();
}
Move(gameTime);
Attack(gameTime, EnemyTrees);
}
/// <summary>
/// By default, the Unit moves randomly and targets the closest enemy Unit
/// </summary>
private void Behavior_Default(GameTime gameTime, List<Unit_KDTree> EnemyTrees, Unit_KDTree AllyTree)
{
DirectionTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (DirectionTimer <= 0.0)
{
DirectionTimer = 5.0;
TargetPosition = Manager.terrain.GetRandomPosition();
}
Move(gameTime);
Attack(gameTime, EnemyTrees);
}
/// <summary>
/// With BuddyUp, the Unit moves (with a bias) towards the first ally Unit it encounters
/// The unit still targets the closest enemy Unit
/// </summary>
private void Behavior_BuddyUp(GameTime gameTime, List<Unit_KDTree> EnemyTrees, Unit_KDTree AllyTree)
{
DirectionTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (DirectionTimer <= 0.0)
{
DirectionTimer = 3.0;
TargetPosition = Manager.terrain.GetRandomPosition();
}
if (OtherTarget == null || OtherTarget.HitPoints <= 0.0)
{
OtherTarget = null;
Distance = float.PositiveInfinity;
AllyTree.FindNearestUnit(this, ref OtherTarget, ref Distance);
}
else
{
TargetPosition = Vector3.Lerp(TargetPosition, OtherTarget.Position, (float)gameTime.ElapsedGameTime.TotalSeconds);
}
Move(gameTime);
Attack(gameTime, EnemyTrees);
}