public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
var target = FixVec2.Zero;
if (!owner.TryGetTargetPosition(ref target))
{
return(SteeringVelocity.Zero);
}
var maxVelocity = owner.Get <MaxVelocity>().Value;
var position = owner.Get <Position>().Value;
target.Sub(ref position);
if (target.MagnitudeSqr == 0)
{
return(SteeringVelocity.Zero);
}
target.Normalize();
target.Scale(ref maxVelocity);
return(new SteeringVelocity
{
Linear = target
});
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
var steering = new SteeringVelocity();
if (!owner.Has <FlowField>())
{
return(steering);
}
var flowField = owner.Get <FlowField>().Field;
var flowVector = flowField.LookupFlowVector(owner.Get <Position>().Value);
if (!owner.Has <TargetOrientation>())
{
return(SteeringVelocity.Zero);
}
if (flowVector.MagnitudeSqr <= ZeroVelocity * ZeroVelocity)
{
return(SteeringVelocity.Zero);
}
var targetOrientation = FixMath.Atan2(-flowVector.X, flowVector.Y);
return(DoReachOrientation(owner, targetOrientation));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
if (!owner.Has <TargetOrientation>())
{
return(SteeringVelocity.Zero);
}
return(DoReachOrientation(owner, owner.Get <TargetOrientation>().Value));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity steering)
{
var linearVelocity = steering.Linear;
if (linearVelocity.MagnitudeSqr <= ZeroVelocity * ZeroVelocity)
{
return(SteeringVelocity.Zero);
}
var targetOrientation = FixMath.Atan2(-linearVelocity.X, linearVelocity.Y);
return(DoReachOrientation(owner, targetOrientation));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
var steering = new SteeringVelocity();
if (!owner.Has <FlowField>())
{
return(steering);
}
var flowField = owner.Get <FlowField>().Field;
var flowVector = flowField.LookupFlowVector(owner.Get <Position>().Value);
var maxVelocity = owner.Get <MaxVelocity>().Value;
steering.Linear = flowVector * maxVelocity;
return(steering);
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
_linear = FixVec2.Zero;
_position = owner.Get <Position>().Value;
Proximity.FindNeighbors(owner, _proximityCallback);
var maxVelocity = owner.Get <MaxVelocity>().Value;
if (_linear.MagnitudeSqr == 0)
{
return(SteeringVelocity.Zero);
}
_linear.Normalize();
_linear.Scale(ref maxVelocity);
return(new SteeringVelocity(_linear));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity steering)
{
var targetLocation = FixVec2.Zero;
if (!owner.TryGetTargetPosition(ref targetLocation))
{
return(SteeringVelocity.Zero);
}
var direction = targetLocation - owner.Get <Position>().Value;
if (direction.MagnitudeSqr <= ZeroVelocity * ZeroVelocity)
{
return(SteeringVelocity.Zero);
}
var targetOrientation = FixMath.Atan2(direction.Y, -direction.X);
return(DoReachOrientation(owner, targetOrientation));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
_averageVelocity = FixVec2.Zero;
var neighborCount = Proximity.FindNeighbors(owner, _proximityCallback);
if (neighborCount > 0)
{
var maxVelocity = owner.Get <MaxVelocity>().Value;
_averageVelocity /= neighborCount;
if (_averageVelocity.MagnitudeSqr == 0)
{
return(SteeringVelocity.Zero);
}
_averageVelocity.Normalize();
_averageVelocity.Scale(ref maxVelocity);
}
return(new SteeringVelocity(_averageVelocity));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedVelocity)
{
var steering = SteeringVelocity.Zero;
var maxVelocity = Fix.MaxValue;
var maxAngularVelocity = Fix.MaxValue;
if (owner.Has <MaxVelocity>())
{
maxVelocity = owner.Get <MaxVelocity>().Value;
}
if (owner.Has <MaxAngularVelocity>())
{
maxAngularVelocity = owner.Get <MaxAngularVelocity>().Value;
}
foreach (var behaviour in _behaviours)
{
steering += behaviour.Calculate(owner, ref steering);
}
steering.Limit(maxVelocity, maxAngularVelocity);
return(steering);
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
_centroid = FixVec2.Zero;
var neighborCount = Proximity.FindNeighbors(owner, _proximityCallback);
if (neighborCount > 0)
{
_centroid /= neighborCount;
_centroid -= owner.Get <Position>().Value;
if (_centroid.MagnitudeSqr == 0)
{
return(SteeringVelocity.Zero);
}
_centroid.Normalize();
var maxVelocity = owner.Get <MaxVelocity>().Value;
_centroid.Scale(ref maxVelocity);
}
return(new SteeringVelocity(_centroid));
}
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
return(_behaviour.Calculate(owner, ref accumulatedSteering) * _weight);
}
public SteeringVelocity Calculate(Entity <Game> owner, ref SteeringVelocity velocity)
{
return(DoCalculate(owner, ref velocity));
}
public abstract SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering);
public override SteeringVelocity DoCalculate(Entity <Game> owner, ref SteeringVelocity accumulatedSteering)
{
var target = FixVec2.Zero;
return(owner.TryGetTargetPosition(ref target) ? Arrive(owner, target) : SteeringVelocity.Zero);
}