private void MutateIfNode(IfNode n)
{
if (PossibleDepth(n) < 1 || PossibleCount(n) < 1)
{
return;
}
int kind = _random.Next(3);
switch (kind)
{
case 0:
n.Condition = _nodeCreator.RandomNode(PossibleDepth(n), PossibleCount(n));
break;
case 1:
n.WhenTrue = _nodeCreator.RandomNode(PossibleDepth(n), PossibleCount(n));
break;
case 2:
n.WhenFalse = _nodeCreator.RandomNode(PossibleDepth(n), PossibleCount(n));
break;
default:
throw new InvalidOperationException("Not the right kind");
}
}
public virtual Node Visit(IfNode n)
{
var c = VisitNode(n.Condition);
var t = VisitNode(n.WhenTrue);
var f = VisitNode(n.WhenFalse);
return(c != n.Condition || t != n.WhenTrue || f != n.WhenFalse
? new IfNode(c, t, f)
: n);
}
public override void Visit(IfNode n)
{
if (!_hasMutation || _mutationPlace < _currentExplorationCount)
{
return;
}
Explore(n);
if (_mutationPlace == _currentExplorationCount)
{
MutateIfNode(n);
}
VisitNode(n.Condition);
VisitNode(n.WhenTrue);
VisitNode(n.WhenFalse);
}
public override Node Visit(IfNode n)
{
var c = VisitNode(n.Condition);
ConstantNode cN = c as ConstantNode;
if (cN != null)
{
return(cN.Value >= 0 ? VisitNode(n.WhenTrue) : VisitNode(n.WhenFalse));
}
var t = VisitNode(n.WhenTrue);
var f = VisitNode(n.WhenFalse);
return(c != n.Condition || t != n.WhenTrue || f != n.WhenFalse
? new IfNode(c, t, f)
: n);
}
public override void Visit(IfNode n)
{
AquireTargetIfPossible(n);
if (Mode == TargetMode.Get && InteractingNode != null)
{
_currentExplorationCount = 0;
return;
}
var next = SetTarget();
n.Condition = next ?? n.Condition;
if (next != null)
{
_currentExplorationCount = 0;
return;
}
VisitNode(n.Condition);
next = SetTarget();
n.WhenTrue = next ?? n.WhenTrue;
if (next != null)
{
_currentExplorationCount = 0;
return;
}
VisitNode(n.WhenTrue);
next = SetTarget();
n.WhenFalse = next ?? n.WhenFalse;
if (next != null)
{
_currentExplorationCount = 0;
return;
}
VisitNode(n.WhenFalse);
}
public virtual void Visit(IfNode n)
{
VisitNode(n.Condition);
VisitNode(n.WhenTrue);
VisitNode(n.WhenFalse);
}
public override void Visit(IfNode n)
{
VisitNode(n.Condition);
VisitNode(_currentValue >= 0 ? n.WhenTrue : n.WhenFalse);
}