public TargetList GetEnemiesInBeamDirection(Vector3D startPoint, Vector3D direction,
float length, float thickness = 0f)
{
Vector3D beamEnd = PowerMath.TranslateDirection2D(startPoint, direction, startPoint, length);
float fixedActorRadius = 1.5f; // TODO: calculate based on actor.ActorData.Cylinder.Ax2 ?
return(_GetTargetsInRadiusHelper(startPoint, length + thickness, -1,
actor => PowerMath.CircleInBeam(new Circle(actor.Position.X, actor.Position.Y, fixedActorRadius),
startPoint, beamEnd, thickness),
_EnemyActorFilter));
}
public TargetList GetEnemiesInArcDirection(Vector3D center, Vector3D direction, float radius, float lengthDegrees)
{
Vector2F arcCenter2D = PowerMath.VectorWithoutZ(center);
Vector2F arcDirection2D = PowerMath.VectorWithoutZ(direction);
float arcLength = lengthDegrees * PowerMath.DegreesToRadians;
float fixedActorRadius = 1.5f; // TODO: calculate based on actor.ActorData.Cylinder.Ax2 ?
return(_GetTargetsInRadiusHelper(center, radius, -1,
actor => PowerMath.ArcCircleCollides(arcCenter2D, arcDirection2D, radius, arcLength,
new Circle(actor.Position.X, actor.Position.Y, fixedActorRadius)),
_EnemyActorFilter));
}
private void _SetupMove(Vector3D destination, float speed)
{
Vector3D dir_normal = PowerMath.Normalize(new Vector3D(destination.X - this.Target.Position.X,
destination.Y - this.Target.Position.Y,
destination.Z - this.Target.Position.Z));
this.Velocity = new Vector3D(dir_normal.X * speed,
dir_normal.Y * speed,
dir_normal.Z * speed);
this.ArrivalTime = new RelativeTickTimer(this.Target.World.Game,
(int)(PowerMath.Distance2D(this.Target.Position, destination) / speed));
_startPosition = this.Target.Position;
_endPosition = destination;
_startTick = this.Target.World.Game.TickCounter;
}
public Actor GetClosestTo(Vector3D position)
{
Actor closest = null;
float closestDistance = float.MaxValue;
foreach (Actor actor in this.Actors)
{
float distance = PowerMath.Distance2D(actor.Position, position);
if (distance < closestDistance)
{
closest = actor;
closestDistance = distance;
}
}
return(closest);
}
private void _SetupArcMove(Vector3D destination, float crestHeight, float gravity)
{
// TODO: handle when target and destination heights differ
float absGravity = Math.Abs(gravity);
float arcLength = (float)Math.Sqrt(2f * crestHeight / absGravity);
int arrivalTicks = (int)(arcLength * 2f);
float distance = PowerMath.Distance2D(this.Target.Position, destination);
Vector3D normal = PowerMath.Normalize(new Vector3D(destination.X - this.Target.Position.X,
destination.Y - this.Target.Position.Y,
0f));
this.Velocity = new Vector3D(normal.X * (distance / arrivalTicks),
normal.Y * (distance / arrivalTicks),
absGravity * arcLength);
this.ArrivalTime = new RelativeTickTimer(this.Target.World.Game, arrivalTicks);
_startPosition = this.Target.Position;
_endPosition = destination;
_startTick = this.Target.World.Game.TickCounter;
_arcGravity = gravity;
}
private void _CheckCollisions()
{
if (OnCollision == null)
{
return;
}
// check if we collided with anything since last update
float radius = this.ActorData.Cylinder.Ax2;
Circle startCircle = new Circle(_prevUpdatePosition.X, _prevUpdatePosition.Y, radius);
// make a velocity representing the change to the current position
Vector2F velocity = PowerMath.VectorWithoutZ(this.Position - _prevUpdatePosition);
Actor hit = null;
TargetList targets = this.Context.GetEnemiesInRadius(this.Position, radius + 25f);
if (CollisionFilter != null)
{
targets.Actors.RemoveAll(actor => !CollisionFilter(actor));
}
targets.SortByDistanceFrom(_prevUpdatePosition);
foreach (Actor target in targets.Actors)
{
float targetRadius = 1.5f; // TODO: use target.ActorData.Cylinder.Ax2 ?
if (PowerMath.MovingCircleCollides(startCircle, velocity, new Circle(target.Position.X, target.Position.Y, targetRadius)))
{
hit = target;
break;
}
}
if (hit != null)
{
OnCollision(hit);
}
}
public void SortByDistanceFrom(Vector3D position)
{
this.Actors = this.Actors.OrderBy(actor => PowerMath.Distance2D(actor.Position, position)).ToList();
}