public void As_ThrowsOnInvalidAndDestroyedNode()
{
using (var set = new NodeSet())
{
Assert.Throws <ArgumentException>(() => set.As <TestNode>(new NodeHandle()));
var handle = set.Create <TestNode>();
set.Destroy(handle);
Assert.Throws <ArgumentException>(() => set.As <TestNode>(handle));
}
}
public void As_WillCorrectlyTestDefinitionEquality()
{
using (var set = new NodeSet())
{
var handle = set.Create <TestNode2>();
Assert.IsFalse(set.As <TestNode>(handle) is NodeHandle <TestNode> unused1);
Assert.IsTrue(set.As <TestNode2>(handle) is NodeHandle <TestNode2> unused2);
set.Destroy(handle);
}
}
void Start()
{
using (var set = new NodeSet())
{
/*
* Here we are creating some nodes, as usual.
* Notice that the node handle is actually templated on your particular type of node. This enables static
* type checking of the graphs you create: You will get compiler errors for making invalid connections,
* for instance. It also allows the node set to bypass most runtime checks on APIs, so it runs faster.
* We will look at this later.
*/
NodeHandle <MyNode> original = set.Create <MyNode>();
/*
* In many cases however, you need to generically work with nodes with no idea about what they are.
* The node set contains a "weak API" as well, where you can work with type and port descriptions at
* runtime instead.
* For this reason, there can also be an untyped or "weak" node handle. A "strong" node handle will
* automatically decay to a weak one.
*/
NodeHandle untyped = original;
/*
* To go back, you need to cast the handle. This will throw an exception if it isn't an exact match.
* There are also "softer" APIs like Is() and As().
*/
NodeHandle <MyNode> typed = set.CastHandle <MyNode>(untyped);
if (!set.Is <MyOtherNode>(untyped))
{
Debug.Log("Untyped node handle originating from a MyNode type isn't a MyOtherNode");
}
var nullableHandle = set.As <MyOtherNode>(untyped);
if (nullableHandle == null || !nullableHandle.HasValue)
{
Debug.Log("Untyped node handle originating from a MyNode type isn't a MyOtherNode");
}
set.Destroy(original);
}
}