using System.Collections.Generic;
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using UnityEngine;
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namespace TowerDefense.Nodes
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{
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/// <summary>
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/// Provides a way to select a node for agents to navigate towards
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/// </summary>
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public abstract class NodeSelector : MonoBehaviour
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{
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/// <summary>
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/// A list of Nodes that can be selected by this NodeSelector
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/// </summary>
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public List<Node> linkedNodes;
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/// <summary>
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/// Gets the next node in the fixed list of nodes
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/// </summary>
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/// <returns>The next node in the list of Nodes, null if the node is the endpoint</returns>
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public abstract Node GetNextNode();
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#if UNITY_EDITOR
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/// <summary>
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/// Draws the links between nodes for editor purposes
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/// </summary>
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protected virtual void OnDrawGizmos()
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{
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if (linkedNodes == null)
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{
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return;
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}
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int count = linkedNodes.Count;
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for (int i = 0; i < count; i++)
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{
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Node node = linkedNodes[i];
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if (node != null)
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{
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Gizmos.DrawLine(transform.position, node.transform.position);
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}
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}
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}
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#endif
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}
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}
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