Nodes

AI システムには、AI を作成するためのノードが多数組み込まれています。以下は、ノードの目的の概要を示しています。ノードの詳細については、インスペクターの情報表示アイコンをクリックしてください。

Create Nodes

最も一般的に作成されるノードは、条件付きノードとアクション ノードです。スクリプトを作成したら、それを AI/BehaviorTree/Nodes フォルダーに配置すると、AI システムで使用できるようになります。以下のテンプレートに従って、独自の機能をコーディングしてください。最初の例は、AI に速度を追加するだけの Move Action ノードです。

 using UnityEngine;

 namespace TwoBitMachines.FlareEngine.AI// Include this namespace
 {
    public class Move : Action // Specify the type of node - Action/Conditional/Composite/Decorator
    {
            [SerializeField] public Vector2 velocity;

            // Use this method to implement the behavior
            public override NodeState RunNodeLogic (Root root)
            {
                    if (nodeSetup == NodeSetup.NeedToInitialize)
                    {
                    //       Any member fields that need to be reset/initialized go here.
                    }

                    root.velocity += velocity;// Root is basically the AI
                    return NodeState.Running; // Return Running
                                              // If the behavior completes, return Success or Failure.
            }

            // Use this to reset important variables
            public override void OnReset ( )
            {

            }

// Root contains a few variables to be aware of

// root.velocity  -- the velocity of the AI, read and write to it
// root.direction -- the direction of the AI on the x-axis, read and write to it
// root.position  -- the position of the AI in the game world, read only

// root.hasJumped -- set true if you have added a jumping force to the AI's root.velocity.y
// root.onSurface -- set true if you are creating a hard surface for the AI to stand on

// root.signals.Set ("relevantSignalName") -- set an animation signal if necessary
// root.world     -- reference to WorldCollision, read settings like onGround, onMovingPlatform, etc.
// root.gravity   -- reference to Gravity, if jumping use root.gravity.SetJump (velocity.y);
//                   see the Jump node for more information
// root.movingPlatform   -- reference to MovingPlatform if the AI is of this type, use it to read
//                          hasPassengers or passengerCount
    }

  }

using UnityEngine;

namespace TwoBitMachines.FlareEngine.AI
{
     // This is a Conditional node. This will simply check if the AI is on the ground.
     // This class doesn't actually exist, but it can be created using this code
     // to get this functionality.
     public class AIOnGround : Conditional
     {
             public override NodeState RunNodeLogic (Root root)
             {
                     return root.world.onGround ? NodeState.Success : NodeState.Failure;
             }
     }
 }

using UnityEngine;

namespace TwoBitMachines.FlareEngine.AI
{
    // This is a Decorator, and it will run its child node until it fails.
    public class UntilFail : Decorator
    {
           public override NodeState RunNodeLogic (Root root)
           {
                  NodeState nodeState = children[0].RunChild (root);
                  return nodeState == NodeState.Failure ? NodeState.Success : NodeState.Running;
           }
    }
}