public static Vector2D operator *(Vector2D lhs, double rhs)
{
Vector2D result = new Vector2D(lhs);
result.x *= rhs;
result.y *= rhs;
return result;
}
public Wall2D(Vector2D vectorFrom, Vector2D vectorTo)
{
_vectorFrom = vectorFrom;
_vectorTo = vectorTo;
calculateNormal();
}
public static Vector2D operator *(double lhs, Vector2D rhs)
{
Vector2D result = new Vector2D(rhs);
result.x *= lhs;
result.y *= lhs;
return result;
}
public static Vector2D operator /(double lhs, Vector2D rhs)
{
Vector2D returnVal = new Vector2D();
returnVal.X = lhs / rhs.X;
returnVal.Y = lhs / rhs.Y;
return returnVal;
}
public static Vector2D operator *(Vector2D lhs, Vector2D rhs)
{
Vector2D returnVal = new Vector2D();
returnVal.X = lhs.X * rhs.X;
returnVal.Y = lhs.Y * rhs.Y;
return returnVal;
}
public static Vector2D operator /(Vector2D lhs, double rhs)
{
Vector2D returnVal = new Vector2D();
returnVal.X = lhs.X / rhs;
returnVal.Y = lhs.Y / rhs;
return returnVal;
}
/// <summary>
/// This function calculates how much of its max steering force the
/// vehicle has left to apply and then applies that amount of the
/// force to add.
/// </summary>
/// <param name="steeringForce"></param>
/// <param name="additionalForce"></param>
/// <returns></returns>
protected bool accumulateForce(ref Vector2D steeringForce, Vector2D additionalForce)
{
bool accumulated = false;
//first calculate how much steering force we have left to use
double magnitudeSoFar = steeringForce.Length;
double magnitudeRemaining = _player.MaxForce - magnitudeSoFar;
//return false if there is no more force left to use
if (magnitudeRemaining <= 0.0) return false;
//calculate the magnitude of the force we want to add
double magnitudeToAdd = additionalForce.Length;
//now calculate how much of the force we can really add
if (magnitudeToAdd > magnitudeRemaining)
{
magnitudeToAdd = magnitudeRemaining;
}
//add it to the steering force
Vector2D add = (Vector2D.Vec2DNormalize(additionalForce) * magnitudeToAdd);
steeringForce += add;
//steeringForce.X += add.X;
//steeringForce.Y += add.Y;
accumulated = true;
return accumulated;
}
public FieldPlayer(SoccerTeam homeTeam,
int homeRegionIndex,
State<FieldPlayer> startState,
Vector2D heading,
Vector2D velocity,
double mass,
double maxForce,
double maxSpeed,
double maxTurnRate,
double scale,
PlayerBase.PlayerRoles role)
: base(homeTeam, homeRegionIndex, heading, velocity, mass, maxForce, maxSpeed, maxTurnRate, scale, role)
{
_stateMachine = new StateMachine<FieldPlayer>(this);
if (startState != null)
{
_stateMachine.CurrentState = _stateMachine.PreviousState = startState;
_stateMachine.GlobalState = GlobalPlayerState.Instance;
_stateMachine.CurrentState.Enter(this);
}
_steeringBehaviors.Seperation = true;
//set up the kick regulator
_kickRegulator = new Regulator(ParameterManager.Instance.PlayerKickFrequency);
}
/// <summary>
/// given a List of 2D vectors, a position and orientation
/// this function transforms the 2D vectors into the object's world space
///
/// </summary>
/// <param name="points"></param>
/// <param name="pos"></param>
/// <param name="forward"></param>
/// <param name="side"></param>
/// <returns></returns>
public static List<Vector2D> WorldTransform(List<Vector2D> points,
Vector2D pos,
Vector2D forward,
Vector2D side)
{
//copy the original vertices into the buffer about to be transformed
List<Vector2D> TranVector2Ds = new List<Vector2D>();
// make deep copy of buffer
for (int pointIndex = 0; pointIndex < points.Count; pointIndex++)
{
TranVector2Ds.Add(new Vector2D(points[pointIndex]));
}
//create a transformation matrix
Matrix2D matTransform = new Matrix2D();
//rotate
matTransform.Rotate(forward, side);
//and translate
matTransform.Translate(pos.X, pos.Y);
//now transform the object's vertices
matTransform.TransformVector2Ds(TranVector2Ds);
return TranVector2Ds;
}
public static Vector2D operator /(Vector2D lhs, double val)
{
Vector2D result = new Vector2D(lhs);
result.x /= val;
result.y /= val;
return result;
}
public static Vector2D operator -(Vector2D lhs, Vector2D rhs)
{
Vector2D result = new Vector2D(lhs);
result.x -= rhs.x;
result.y -= rhs.y;
return result;
}
public static void DrawCircle(Graphics g, Vector2D location, double radius)
{
float x = (float)location.X - (float)radius;
float y = (float)location.Y - (float)radius;
g.FillEllipse(_currentBrush, x, y, (float)radius * 2.0f, (float)radius * 2.0f);
g.DrawEllipse(_currentPen, x, y, (float)radius * 2.0f, (float)radius * 2.0f);
}
public SoccerGoal(Vector2D leftPost, Vector2D rightPost, Vector2D facing)
{
_leftPost = leftPost;
_rightPost = rightPost;
_facingDirection = facing;
_goalsScored = 0;
_goalLineCenter = (_leftPost + _rightPost) / 2.0;
}
public GoalKeeper(SoccerTeam homeTeam,
int homeRegionIndex,
State<GoalKeeper> startState,
Vector2D heading,
Vector2D velocity,
double mass,
double maxForce,
double maxSpeed,
double maxTurnRate,
double scale)
:
base(homeTeam, homeRegionIndex, heading, velocity, mass, maxForce, maxSpeed, maxTurnRate, scale, PlayerRoles.GoalKeeper)
{
_stateMachine = new StateMachine<GoalKeeper>(this);
_stateMachine.CurrentState = _stateMachine.PreviousState = startState;
_stateMachine.GlobalState = GlobalKeeperState.Instance;
_stateMachine.CurrentState.Enter(this);
}
public PlayerBase(SoccerTeam homeTeam, int homeRegionIndex, Vector2D heading, Vector2D velocity,
double mass, double maxForce, double maxSpeed, double maxTurnRate, double scale, PlayerRoles role)
: base(homeTeam.Pitch.GetRegion(homeRegionIndex).VectorCenter, scale * 10.0, velocity, maxSpeed, heading, mass, new Vector2D(scale, scale), maxTurnRate, maxForce)
{
_playerRole = role;
_team = homeTeam;
_distanceToBallSquared = double.MaxValue;
_homeRegionIndex = homeRegionIndex;
_kickoffRegionIndex = homeRegionIndex;
Vector2D[] player = new Vector2D[4] { new Vector2D(-3, 8), new Vector2D(3, 10), new Vector2D(3, -10), new Vector2D(-3, -8) };
for (int vertexIndex = 0; vertexIndex < 4; vertexIndex++)
{
_vecPlayerVB.Add(player[vertexIndex]);
//set the bounding radius to the length of the
//greatest extent
if (Math.Abs(player[vertexIndex].X) > BoundingRadius)
{
BoundingRadius = Math.Abs(player[vertexIndex].X);
}
if (Math.Abs(player[vertexIndex].Y) > BoundingRadius)
{
BoundingRadius = Math.Abs(player[vertexIndex].Y);
}
}
//set up the steering behavior class
_steeringBehaviors = new SteeringBehaviors(this, Ball);
//a player's start target is its start position (because it's just waiting)
_steeringBehaviors.Target = _team.Pitch.GetRegion(_homeRegionIndex).VectorCenter;
AutoList<PlayerBase>.GetAllMembers().Add(this);
_defaultHomeRegionIndex = _homeRegionIndex;
}
public bool RotateHeadingToFacePosition(Vector2D target)
{
Vector2D delta = target - Position;
Vector2D toTarget = Vector2D.Vec2DNormalize(delta);
double dot = _heading.GetDotProduct(toTarget);
//some compilers lose acurracy so the value is clamped to ensure it
//remains valid for the acos
if (dot < -1)
dot = -1;
else if (dot > 1)
dot = 1;
//first determine the angle between the heading vector and the target
double angle = Math.Acos(dot);
//return true if the player is facing the target
if (angle < .00001) return true;
//clamp the amount to turn to the max turn rate
if (angle > _maxTurnRate) angle = _maxTurnRate;
//The next few lines use a rotation matrix to rotate the player's heading
//vector accordingly
Matrix2D rotationMatrix = new Matrix2D();
//notice how the direction of rotation has to be determined when creating
//the rotation matrix
rotationMatrix.Rotate(angle * _heading.Sign(toTarget));
rotationMatrix.TransformVector2Ds(_heading);
rotationMatrix.TransformVector2Ds(_velocity);
//finally recreate m_vSide
_side = _heading.Perp;
return false;
}
/// <summary>
/// Calculates the overall steering force based on the currently active
/// steering behaviors.
/// </summary>
/// <returns></returns>
public Vector2D CalculateSteeringForce()
{
//reset the force
_steeringForce.Zero();
//this will hold the value of each individual steering force
_steeringForce = sumForces();
//make sure the force doesn't exceed the vehicles maximum allowable
_steeringForce.Truncate(_player.MaxForce);
return _steeringForce;
}
public SteeringBehaviors(PlayerBase player, SoccerBall ball)
{
_player = player;
_ball = ball;
_separationMultiple = ParameterManager.Instance.SeparationCoefficient;
_viewDistance = ParameterManager.Instance.ViewDistance;
_tagged = false;
_interposeDist = 0.0;
_behaviorFlags = (int)BehaviorFlags.None;
_dribbleFeelers = new List<Vector2D>(5);
for (int i = 0; i < _dribbleFeelers.Count; i++)
{
_dribbleFeelers[i] = new Vector2D();
}
}
/// <summary>
/// This method calls each active steering behavior and acumulates their
/// forces until the max steering force magnitude is reached at which
/// time the function returns the steering force accumulated to that
/// point
/// </summary>
/// <returns></returns>
protected Vector2D sumForces()
{
Vector2D force = new Vector2D();
//the soccer players must always tag their neighbors
findNeighbours();
if (Seperation)
{
force += calculateSeparationVector() * _separationMultiple;
if (!accumulateForce(ref _steeringForce, force)) return _steeringForce;
}
if (Seek)
{
force += calculateSeekVector(_target);
if (!accumulateForce(ref _steeringForce, force)) return _steeringForce;
}
if (Arrive)
{
force += calculateArriveVector(_target, DecelerationState.Fast);
if (!accumulateForce(ref _steeringForce, force)) return _steeringForce;
}
if (Pursuit)
{
force += calculatePursuitVector(_ball);
if (!accumulateForce(ref _steeringForce, force)) return _steeringForce;
}
if (InterposeTarget)
{
force += calculateInterposeVector(_ball, _target, _interposeDist);
if (!accumulateForce(ref _steeringForce, force)) return _steeringForce;
}
return _steeringForce;
}
/// <summary>
/// Given an opponent and an object position this method returns a
/// force that attempts to position the agent between them
/// </summary>
/// <param name="ball"></param>
/// <param name="target"></param>
/// <param name="distFromTarget"></param>
/// <returns></returns>
protected Vector2D calculateInterposeVector(SoccerBall ball,
Vector2D target,
double distFromTarget)
{
return calculateArriveVector(target + Vector2D.Vec2DNormalize(ball.Position - target) * distFromTarget, DecelerationState.Normal);
}
/// <summary>
/// This behavior creates a force that steers the agent towards the
// ball
/// </summary>
/// <param name="ball"></param>
/// <returns></returns>
protected Vector2D calculatePursuitVector(SoccerBall ball)
{
Vector2D toBall = ball.Position - _player.Position;
//the lookahead time is proportional to the distance between the ball
//and the pursuer;
double lookAheadTime = 0.0;
if (Math.Abs(ball.Speed) > Geometry.MinPrecision)
{
lookAheadTime = toBall.Length / ball.Speed;
}
//calculate where the ball will be at this time in the future
_target = ball.CalculateFuturePosition(lookAheadTime);
//now seek to the predicted future position of the ball
return calculateArriveVector(_target, DecelerationState.Fast);
}
/// <summary>
/// This behavior is similar to seek but it attempts to arrive at the
/// target with a zero velocity
/// </summary>
/// <param name="target"></param>
/// <param name="decel"></param>
/// <returns></returns>
protected Vector2D calculateArriveVector(Vector2D target, DecelerationState decel)
{
Vector2D toTarget = target - _player.Position;
//calculate the distance to the target
double dist = toTarget.Length;
if (dist > 0.0)
{
//because Deceleration is enumerated as an int, this value is required
//to provide fine tweaking of the deceleration..
double decelerationTweaker = 0.3;
//calculate the speed required to reach the target given the desired
//deceleration
double speed = dist / ((double)decel * decelerationTweaker);
//make sure the velocity does not exceed the max
speed = Math.Min(speed, _player.MaxSpeed);
//from here proceed just like Seek except we don't need to normalize
//the ToTarget vector because we have already gone to the trouble
//of calculating its length: dist.
Vector2D desiredVelocity = toTarget * speed / dist;
return (desiredVelocity - _player.Velocity);
}
return new Vector2D(0, 0);
}
/// <summary>
/// Given a target, this behavior returns a steering force which will
/// allign the agent with the target and move the agent in the desired
/// direction
/// </summary>
/// <returns></returns>
protected Vector2D calculateSeekVector(Vector2D target)
{
Vector2D desiredVelocity = Vector2D.Vec2DNormalize(target - _player.Position)
* _player.MaxSpeed;
return (desiredVelocity - _player.Velocity);
}
/// <summary>
/// This calculates a force repelling from the other neighbors
/// </summary>
/// <returns></returns>
protected Vector2D calculateSeparationVector()
{
//iterate through all the neighbors and calculate the vector from the
Vector2D steeringForce = new Vector2D();
List<PlayerBase> allPlayers = AutoList<PlayerBase>.GetAllMembers();
for (int playerIndex = 0; playerIndex < allPlayers.Count; playerIndex++)
{
//make sure this agent isn't included in the calculations and that
//the agent is close enough
if (allPlayers[playerIndex] != _player && allPlayers[playerIndex].SteeringBehaviors.Tagged)
{
Vector2D toAgent = _player.Position - allPlayers[playerIndex].Position;
//scale the force inversely proportional to the agents distance
//from its neighbor.
if (Math.Abs(toAgent.Length) > double.Epsilon)
{
steeringForce += Vector2D.Vec2DNormalize(toAgent) / toAgent.Length;
}
}
}
return steeringForce;
}
public Vector2D DetermineBestSupportingPosition()
{
//only update the spots every few frames
if (!_regulator.IsReady /* && _bestSupportingSpot != null */)
{
return _bestSupportingSpot.m_vPos;
}
//reset the best supporting spot
_bestSupportingSpot = null;
double BestScoreSoFar = 0.0;
for (int spotIndex = 0; spotIndex < _supportSpots.Count; spotIndex++)
{
//first remove any previous score. (the score is set to one so that
//the viewer can see the positions of all the spots if he has the
//aids turned on)
_supportSpots[spotIndex].m_dScore = 1.0;
//Test 1. is it possible to make a safe pass from the ball's position
//to this position?
if (_team.IsPassSafeFromAllOpponents(_team.ControllingPlayer.Position,
_supportSpots[spotIndex].m_vPos,
null,
ParameterManager.Instance.MaxPassingForce))
{
_supportSpots[spotIndex].m_dScore += ParameterManager.Instance.SpotPassSafeScore;
}
Vector2D shotTarget = new Vector2D();
//Test 2. Determine if a goal can be scored from this position.
if (_team.CanShoot(_supportSpots[spotIndex].m_vPos,
ParameterManager.Instance.MaxShootingForce, ref shotTarget))
{
_supportSpots[spotIndex].m_dScore += ParameterManager.Instance.SpotCanScoreFromPositionScore;
}
//Test 3. calculate how far this spot is away from the controlling
//player. The further away, the higher the score. Any distances further
//away than OptimalDistance pixels do not receive a score.
if (_team.SupportingPlayer != null)
{
const double OptimalDistance = 200.0;
double dist = Vector2D.Vec2DDistance(_team.ControllingPlayer.Position,
_supportSpots[spotIndex].m_vPos);
double temp = Math.Abs(OptimalDistance - dist);
if (temp < OptimalDistance)
{
//normalize the distance and add it to the score
_supportSpots[spotIndex].m_dScore += ParameterManager.Instance.SpotDistFromControllingPlayerScore *
(OptimalDistance - temp) / OptimalDistance;
}
}
//check to see if this spot has the highest score so far
if (_supportSpots[spotIndex].m_dScore > BestScoreSoFar)
{
BestScoreSoFar = _supportSpots[spotIndex].m_dScore;
_bestSupportingSpot = _supportSpots[spotIndex];
}
}
return _bestSupportingSpot.m_vPos;
}
public SupportSpot(Vector2D pos, double value)
{
m_vPos = pos;
m_dScore = value;
}
public bool IsPositionInside(Vector2D position, RegionModifier modifier)
{
if (modifier == RegionModifier.Normal)
{
return ((position.X > _left) && (position.X < _right) &&
(position.Y > _top) && (position.Y < _bottom));
}
else
{
double marginX = Width * 0.25;
double marginY = Height * 0.25;
return ((position.X > (_left + marginX)) && (position.X < (_right - marginX)) &&
(position.Y > (_top + marginY)) && (position.Y < (_bottom - marginY)));
}
}
//applies a 2D transformation matrix to a single Vector2D
public void TransformVector2Ds(Vector2D vPoint)
{
double tempX = (m_Matrix._11 * vPoint.X) + (m_Matrix._21 * vPoint.Y) + (m_Matrix._31);
double tempY = (m_Matrix._12 * vPoint.X) + (m_Matrix._22 * vPoint.Y) + (m_Matrix._32);
vPoint.X = tempX;
vPoint.Y = tempY;
}
public bool IsPositionInside(Vector2D position)
{
return IsPositionInside(position, RegionModifier.Normal);
}
//------------------------- WithinFieldOfView ---------------------------
//
// returns true if subject is within field of view of this player
//-----------------------------------------------------------------------
bool IsPositionInFrontOfPlayer(Vector2D position)
{
Vector2D ToSubject = position - Position;
if (ToSubject.GetDotProduct(Heading) > 0)
return true;
else
return false;
}