Added description field to nodes.

Forge.Tests/Statescript/ExpressionResolverTests.cs

@@ -34,7 +34,7 @@ public void Comparison_resolver_greater_than_returns_true_when_left_exceeds_righ
 				ComparisonOperation.GreaterThan,
 				new VariantResolver(new Variant128(10.0), typeof(double))));
 
-		var condition = new ExpressionConditionNode("isAboveThreshold");
+		var condition = new ExpressionNode("isAboveThreshold");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -71,7 +71,7 @@ public void Comparison_resolver_greater_than_returns_false_when_left_is_less()
 				ComparisonOperation.GreaterThan,
 				new VariantResolver(new Variant128(10.0), typeof(double))));
 
-		var condition = new ExpressionConditionNode("isAboveThreshold");
+		var condition = new ExpressionNode("isAboveThreshold");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -108,7 +108,7 @@ public void Comparison_resolver_equal_returns_true_for_matching_values()
 				ComparisonOperation.Equal,
 				new VariantResolver(new Variant128(42.0), typeof(double))));
 
-		var condition = new ExpressionConditionNode("isEqual");
+		var condition = new ExpressionNode("isEqual");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -148,7 +148,7 @@ public void Comparison_resolver_compares_two_graph_variables()
 				ComparisonOperation.GreaterThan,
 				new VariableResolver("threshold", typeof(double))));
 
-		var condition = new ExpressionConditionNode("isHealthAboveThreshold");
+		var condition = new ExpressionNode("isHealthAboveThreshold");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -185,7 +185,7 @@ public void Comparison_resolver_less_than_or_equal_at_boundary()
 				ComparisonOperation.LessThanOrEqual,
 				new VariantResolver(new Variant128(10.0), typeof(double))));
 
-		var condition = new ExpressionConditionNode("atBoundary");
+		var condition = new ExpressionNode("atBoundary");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -222,7 +222,7 @@ public void Comparison_resolver_not_equal_returns_true_for_different_values()
 				ComparisonOperation.NotEqual,
 				new VariantResolver(new Variant128(2.0), typeof(double))));
 
-		var condition = new ExpressionConditionNode("isDifferent");
+		var condition = new ExpressionNode("isDifferent");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -253,7 +253,7 @@ public void Expression_condition_node_returns_false_for_missing_property()
 	{
 		var graph = new Graph();
 
-		var condition = new ExpressionConditionNode("nonexistent");
+		var condition = new ExpressionNode("nonexistent");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -293,7 +293,7 @@ public void Comparison_resolver_works_with_int_operands()
 				ComparisonOperation.GreaterThanOrEqual,
 				new VariableResolver("requiredScore", typeof(int))));
 
-		var condition = new ExpressionConditionNode("hasEnoughScore");
+		var condition = new ExpressionNode("hasEnoughScore");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 
@@ -334,7 +334,7 @@ public void Comparison_resolver_works_with_attribute_resolver()
 				ComparisonOperation.GreaterThanOrEqual,
 				new VariableResolver("required", typeof(int))));
 
-		var condition = new ExpressionConditionNode("hasEnoughAttribute");
+		var condition = new ExpressionNode("hasEnoughAttribute");
 		var trueAction = new TrackingActionNode();
 		var falseAction = new TrackingActionNode();
 

Forge/Statescript/Node.cs

@@ -19,6 +19,11 @@ public abstract class Node
 	/// <param name="outputPorts">The list to add output ports to.</param>
 	protected abstract void DefinePorts(List<InputPort> inputPorts, List<OutputPort> outputPorts);
 
+	/// <summary>
+	/// Gets a description of the node type, which is used in editor tooltips and documentation.
+	/// </summary>
+	public virtual string Description => $"{GetType().Name.Replace("Node", string.Empty)} node.";
+
 	/// <summary>
 	/// Gets or sets the unique identifier for this node.
 	/// </summary>

Forge/Statescript/Nodes/Action/SetVariableNode.cs

@@ -23,6 +23,9 @@ public class SetVariableNode(StringKey sourcePropertyName, StringKey targetVaria
 
 	private readonly StringKey _targetVariableName = targetVariableName;
 
+	/// <inheritdoc/>
+	public override string Description => "Sets a graph variable to the value of a property.";
+
 	/// <inheritdoc/>
 	protected override void Execute(GraphContext graphContext)
 	{

Forge/Statescript/Nodes/ActionNode.cs

@@ -26,6 +26,9 @@ public abstract class ActionNode : Node
 	/// <param name="graphContext">The current graph context.</param>
 	protected abstract void Execute(GraphContext graphContext);
 
+	/// <inheritdoc/>
+	public override string Description => $"A {GetType().Name.Replace("Node", string.Empty)} action node.";
+
 	/// <inheritdoc/>
 #pragma warning disable SA1202 // Elements should be ordered by access
 	internal override IEnumerable<int> GetReachableOutputPorts(byte inputPortIndex)

Forge/Statescript/Nodes/Condition/ExpressionConditionNode.cs → Forge/Statescript/Nodes/Condition/ExpressionNode.cs

@@ -17,10 +17,13 @@ namespace Gamesmiths.Forge.Statescript.Nodes.Condition;
 /// </remarks>
 /// <param name="conditionPropertyName">The name of the graph property that provides the condition result. Must resolve
 /// to a <see langword="bool"/> value.</param>
-public class ExpressionConditionNode(StringKey conditionPropertyName) : ConditionNode
+public class ExpressionNode(StringKey conditionPropertyName) : ConditionNode
 {
 	private readonly StringKey _conditionPropertyName = conditionPropertyName;
 
+	/// <inheritdoc/>
+	public override string Description => "Evaluates the given property to determine which port to activate.";
+
 	/// <inheritdoc/>
 	protected override bool Test(GraphContext graphContext)
 	{

Forge/Statescript/Nodes/ConditionNode.cs

@@ -32,6 +32,9 @@ public abstract class ConditionNode : Node
 	/// <returns><see langword="true"/> if the condition is met; otherwise, <see langword="false"/>.</returns>
 	protected abstract bool Test(GraphContext graphContext);
 
+	/// <inheritdoc/>
+	public override string Description => $"A {GetType().Name.Replace("Node", string.Empty)} condition node.";
+
 	/// <inheritdoc/>
 #pragma warning disable SA1202 // Elements should be ordered by access
 	internal override IEnumerable<int> GetReachableOutputPorts(byte inputPortIndex)

Forge/Statescript/Nodes/EntryNode.cs

@@ -15,6 +15,9 @@ public class EntryNode : Node
 	/// </summary>
 	public const byte OutputPort = 0;
 
+	/// <inheritdoc/>
+	public override string Description => "Entry point of the graph. Emits a message to start execution.";
+
 	/// <summary>
 	/// Starts the graph execution by emitting a message through the output port.
 	/// </summary>

Forge/Statescript/Nodes/ExitNode.cs

@@ -19,6 +19,9 @@ public class ExitNode : Node
 	/// </summary>
 	public const byte InputPort = 0;
 
+	/// <inheritdoc/>
+	public override string Description => "Exit point of the graph. Stops execution when a message is received.";
+
 	/// <inheritdoc/>
 	internal override IEnumerable<int> GetReachableOutputPorts(byte inputPortIndex)
 	{

Forge/Statescript/Nodes/State/TimerNode.cs

@@ -21,6 +21,9 @@ public class TimerNode(StringKey durationPropertyName) : StateNode<TimerNodeCont
 {
 	private readonly StringKey _durationPropertyName = durationPropertyName;
 
+	/// <inheritdoc/>
+	public override string Description => "Remains active for a configured duration, then deactivates.";
+
 	/// <inheritdoc/>
 	protected override void OnActivate(GraphContext graphContext)
 	{

Forge/Statescript/Nodes/StateNode.cs

@@ -57,6 +57,9 @@ public abstract class StateNode<T> : Node
 	/// <param name="graphContext">The graph's context.</param>
 	protected abstract void OnDeactivate(GraphContext graphContext);
 
+	/// <inheritdoc/>
+	public override string Description => $"A {GetType().Name.Replace("Node", string.Empty)} state node.";
+
 	/// <summary>
 	/// Updates this state node with the given delta time. Only processes the update if the node is currently active.
 	/// </summary>