public override Vector2 Steer(ISteeringTarget target)
{
var force = Vector2.Zero;
var neighborCount = 0;
var result = CheckNearestFunc.Invoke(this);
foreach (var entity in result)
{
force += entity.Position - SteeringEntity.Position;
neighborCount++;
}
if (neighborCount != 0)
{
force /= neighborCount;
force *= -1;
}
if (force != Vector2.Zero)
{
force.Normalize();
}
force *= MaxSeparation;
return(force);
}
public override Vector2 Steer(ISteeringTarget target)
{
var dv = SteeringEntity.Velocity;
if (dv != Vector2.Zero)
{
dv.Normalize();
}
dv *= MaxAvoidAhead * SteeringEntity.Velocity.Length() / SteeringEntity.MaxVelocity;
_ahead = SteeringEntity.Position + dv;
// BUG: It really likes to get stuck on edges (rectangle colliders), probably need to check field of view, not just a ray.
var collision = Physics.Linecast(SteeringEntity.Position, _ahead, 2);
var mostThreatening = collision.Collider;
if (mostThreatening != null && collision.Collider.Entity != Entity)
{
_avoidance = _ahead - mostThreatening.AbsolutePosition;
_avoidance.Normalize();
_avoidance *= AvoidForce;
}
else
{
_avoidance *= 0;
}
return(_avoidance);
}
public static Vector2 Seek(ISteeringTarget target, ISteeringEntity steeringEntity)
{
var dv = target.Position - steeringEntity.Position;
dv.Normalize();
steeringEntity.DesiredVelocity = dv;
return((steeringEntity.DesiredVelocity * steeringEntity.MaxVelocity) - steeringEntity.Velocity);
}
public static Vector2 Flee(ISteeringTarget target, ISteeringEntity steeringEntity)
{
var dv = (target.Position - steeringEntity.Position);
dv.Normalize();
dv *= steeringEntity.MaxVelocity;
steeringEntity.DesiredVelocity = -dv;
return(steeringEntity.DesiredVelocity - steeringEntity.Velocity);
}
private void AcquireConfigObjects()
{
if (this.sampler == null)
{
this.sampler = new AdaptiveVelocitySampler();
}
if (this.target == null)
{
this.target = new DirectionTarget();
}
if (this.characteristics == null)
{
this.characteristics = new DefaultAgentCharacteristics();
}
}
public SteeringBuilder(Vector2 position, ISteeringTarget target = null)
{
_entity = new SteeringEntity
{
Name = "steering-" + _currId,
Position = position,
Tag = 123
};
var smc = _entity.AddComponent(new SteeringManagerComponent(target));
_entity.ResetEvent += (sender, args) => smc.UpdateComponents();
_currId++;
}
public override Vector2 Steer(ISteeringTarget target)
{
var distance = (target.Position - SteeringEntity.Position).Length();
var updatesAhead = distance / SteeringEntity.MaxVelocity;
Vector2 futurePos;
if (target is ISteeringEntity steeringTarget)
{
futurePos = target.Position + steeringTarget.Velocity * updatesAhead;
}
else
{
futurePos = target.Position;
}
return(NestedBehavior == null
? BehaviorMath.Flee((Vector2SteeringTarget)futurePos, SteeringEntity)
: NestedBehavior.Steer((Vector2SteeringTarget)futurePos));
}
public override Vector2 Steer(ISteeringTarget target)
{
var dv = Leader.Velocity;
var force = Vector2.Zero;
dv.Normalize();
dv *= LeaderBehindDist;
_ahead = Leader.Position + dv;
dv *= -1;
_behind = Leader.Position + dv;
//if (IsOnLeaderSight(_ahead))
// force += _evade.Steer(Leader as ISteeringTarget);
ISteeringBehavior nestedBehavior = NestedBehavior ?? _arrival;
return(force + nestedBehavior.Steer((Vector2SteeringTarget)_behind));
}
public override Vector2 Steer(ISteeringTarget target)
{
var v = SteeringEntity.Velocity;
var brake = Vector2.Zero;
var neighbor = _getNeighborAheadFunc.Invoke(SteeringEntity);
if (neighbor != null)
{
brake = -SteeringEntity.Steering * 0.8f;
v *= -1;
brake += v;
if (Vector2.Distance(SteeringEntity.Position, neighbor.Position) <= _maxQueueRadius)
{
SteeringEntity.Velocity *= 0.3f;
}
}
return(brake);
}
public override Vector2 Steer(ISteeringTarget target)
{
if (_target == null)
{
_target = target;
}
SteeringEntity.DesiredVelocity = target.Position - SteeringEntity.Position;
var distance = SteeringEntity.DesiredVelocity.Length();
if (distance < SlowingRadius)
{
SteeringEntity.DesiredVelocity = SteeringEntity.DesiredVelocity.Normalized() * SteeringEntity.MaxVelocity * (distance / SlowingRadius);
}
else
{
SteeringEntity.DesiredVelocity = SteeringEntity.DesiredVelocity.Normalized() * SteeringEntity.MaxVelocity;
}
return(SteeringEntity.DesiredVelocity - SteeringEntity.Velocity);
}
public override Vector2 Steer(ISteeringTarget target)
{
var circleCenter = SteeringEntity.Velocity;
circleCenter.Normalize();
circleCenter *= CircleDistance;
var displacement = new Vector2(0, -1);
displacement *= CircleRadius;
displacement = SetAngle(displacement, WanderAngle);
var nxt = Random.RNG.NextFloat(-AngleChange, AngleChange);
WanderAngle += nxt;
var wanderForce = circleCenter + displacement;
SteeringEntity.DesiredVelocity = wanderForce.Normalized() * SteeringEntity.MaxVelocity;
return(SteeringEntity.DesiredVelocity - SteeringEntity.Velocity);
}
private void AcquireConfigObjects()
{
if (this.sampler == null) this.sampler = new AdaptiveVelocitySampler();
if (this.target == null) this.target = new DirectionTarget();
if (this.characteristics == null) this.characteristics = new DefaultAgentCharacteristics();
}
public ConditionArgs(ISteeringEntity entity, ISteeringTarget target)
{
Entity = entity;
Target = target;
}
public override Vector2 Steer(ISteeringTarget target)
{
return(BehaviorMath.Seek(target, SteeringEntity));
}
public abstract Vector2 Steer(ISteeringTarget target);
public override Vector2 Steer(ISteeringTarget target)
{
if (!target.IsActual) // We've completed the path, need to stop now
{
return(-SteeringEntity.Velocity);
}
var pathComp = target as PathComponent;
if (pathComp == null)
{
throw new Exception("Incorrect pathing target (use PathComponent)");
}
var path = pathComp.Path;
if (path.NodeCount == 0)
{
return(-SteeringEntity.Velocity);
}
if (PathFollowingMode == PathFollowingMode.Patrol)
{
var targetNode = path[_currentNode];
if (targetNode != null)
{
/*var distance = (SteeringEntity.Position - targetNode.Target).Length();
*
* if (distance <= targetNode.TargetRadius)*/
if (IsWithinTarget(targetNode))
{
_currentNode += _pathDir;
if (_currentNode >= path.NodeCount || _currentNode < 0)
{
_pathDir *= -1;
_currentNode += _pathDir;
}
targetNode = path[_currentNode];
}
return(_pathFollowingBehavior.Steer((Vector2SteeringTarget)targetNode.Target));
}
}
else if (PathFollowingMode == PathFollowingMode.Circular)
{
var targetNode = path[_currentNode % path.NodeCount];
if (targetNode != null)
{
/*var distance = (SteeringEntity.Position - targetNode.Target).Length();
*
* if (distance <= targetNode.TargetRadius)*/
if (IsWithinTarget(targetNode))
{
_currentNode++;
targetNode = path[_currentNode % path.NodeCount];
}
return(_pathFollowingBehavior.Steer((Vector2SteeringTarget)targetNode.Target));
}
}
else if (PathFollowingMode == PathFollowingMode.OneWay)
{
var targetNode = path.GetTargetNode();
if (targetNode != null)
{
/*var distance = (target.Position - SteeringEntity.Position).Length();
*
* if (distance <= targetNode.TargetRadius)*/
if (IsWithinTarget(targetNode))
{
path.RemoveTargetNode();
}
return(_pathFollowingBehavior.Steer((Vector2SteeringTarget)targetNode.Target));
}
}
return(-SteeringEntity.Velocity);
}
