Assets/Scenes/MainGame.shade

@@ -8633,3 +8633,62 @@
       Scale: {x: 1, y: 1, z: 1}
       IsActive: true
   Scripts: ~
+- EID: 196
+  Name: ====AI=====
+  IsActive: true
+  NumberOfChildren: 0
+  Components:
+    Transform Component:
+      Translate: {x: 2.70000005, y: 0.100000001, z: -2}
+      Rotate: {x: -0, y: 0, z: -0}
+      Scale: {x: 1, y: 1, z: 1}
+      IsActive: true
+    Renderable Component:
+      Mesh: 140697366
+      Material: 129495479
+      IsActive: true
+    RigidBody Component:
+      Type: Dynamic
+      Drag: 0.00999999978
+      Angular Drag: 0.00999999978
+      Use Gravity: true
+      Interpolate: false
+      Sleeping Enabled: true
+      Freeze Position X: false
+      Freeze Position Y: false
+      Freeze Position Z: false
+      Freeze Rotation X: true
+      Freeze Rotation Y: false
+      Freeze Rotation Z: true
+      IsActive: true
+    Collider Component:
+      Colliders:
+        - Is Trigger: false
+          Type: Box
+          Half Extents: {x: 1, y: 1.79999995, z: 0.400000006}
+          Friction: 0.400000006
+          Bounciness: 0
+          Density: 1
+          Position Offset: {x: 0, y: 0.899999976, z: 0}
+          Rotation Offset: {x: 0, y: 0, z: 0}
+      IsActive: true
+  Scripts:
+    - Type: Homeowner1
+      Enabled: true
+      player: 2
+      waypoints:
+        - [2.70000005, 0, -2]
+        - [-0.300000012, 0, -2.70000005]
+        - [-2, 0, -3.79999995]
+        - [-4, 0, -2.0999999]
+        - [-2.9000001, 0, 2.4000001]
+        - [-1, 0, 4]
+        - [2.70000005, 0, 4]
+      patrolSpeed: 1
+      chaseSpeed: 2
+      turningSpeed: 5
+      sightDistance: 8
+      eyeOffset: [0, 0, 0]
+      distanceToCapture: 0.5
+      captureTime: 0.5
+      footstepSFXIntervalMultiplier: 0.5

Assets/Scenes/MainGameWithAI.shade.shmeta

@@ -0,0 +1,3 @@
+Name: MainGameWithAI
+ID: 96052853
+Type: 5

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTree.cs

@@ -0,0 +1,88 @@
+/*********************************************************************
+ * \file   BehaviourTree.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Based off Kheng Ian's SC_BTTree.cs
+ *         Abstract class to be inherited as the "core" of any entity's AI
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+using SHADE;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Design;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SHADE_Scripting.AIBehaviour.BehaviourTree
+{
+  public abstract partial class BehaviourTree : Script
+  {
+    //The root of the tree, it should not have any parent
+    private BehaviourTreeNode _root = null;
+    protected BehaviourTreeNode root { get => _root; set => _root = value; }
+
+    //Events of the behaviour tree
+    public abstract BehaviourTreeEvents events { get; }
+
+    //Dictionary containing every single node in the tree
+    //Key is the node's unique name
+    public Dictionary<string, BehaviourTreeNode> nodeDictionary = new Dictionary<string, BehaviourTreeNode>();
+
+    //When inheriting from the class, this is where you would define your tree structure
+
+    //Very important
+    //Override this to construct the behaviour tree of any AI
+    protected abstract BehaviourTreeNode CreateTree();
+
+    //awake and update functions
+    //the only segment in the entire AI that is dependent on the engine
+    protected override void awake()
+    {
+      _root = CreateTree();
+      _root.InitialiseNode(this);
+      Initialise();
+    }
+    protected override void update()
+    {
+      _root?.Evaluate();
+      Tick();
+    }
+
+    protected abstract void Initialise();
+    protected abstract void Tick();
+  }
+
+  //BLACKBOARD SYSTEM///////////////////////////////////////////////////////////
+  //Shared data within the tree, implemented as a dictionary of objects
+  public abstract partial class BehaviourTree : Script
+  {
+    //Data to be shared among nodes
+    public Dictionary<string, object> blackboard = new Dictionary<string, object>();
+
+    //Getters and setters for the blackboard
+    public object GetData(string key)
+    {
+      object outData = null;
+      if (blackboard.TryGetValue(key, out outData)) return outData;
+      else return outData;
+    }
+    public void SetData(string key, object data)
+    {
+      blackboard[key] = data;
+    }
+    public bool ClearData(string key)
+    {
+      if (blackboard.ContainsKey(key))
+      {
+        blackboard.Remove(key);
+        return true;
+      }
+      else
+        return false;
+    }
+  }
+}

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTree.cs.shmeta

@@ -0,0 +1,3 @@
+Name: BehaviourTree
+ID: 156799455
+Type: 9

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTreeEvents.cs

@@ -0,0 +1,59 @@
+/*********************************************************************
+ * \file   BehaviourTreeEvents.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Based off Kheng Ian's SC_BTEvents.cs
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Serialization;
+
+namespace SHADE_Scripting.AIBehaviour.BehaviourTree
+{
+  public abstract class BehaviourTreeEvents
+  {
+    public BehaviourTree tree;
+    public BehaviourTreeEvents(BehaviourTree tree)
+    {
+      this.tree = tree;
+    }
+
+    //Called at the start
+    public abstract void Initialise();
+    //Called at every tick
+    public abstract void Tick();
+
+    public void OnEnterAddListener(string name, Delegate action)
+    {
+      BehaviourTreeNode targetNode;
+      tree.nodeDictionary.TryGetValue(name, out targetNode);
+      targetNode.onEnterEvent += (EventHandler)action;
+    }
+    public void OnExitAddListener(string name, Delegate action)
+    {
+      BehaviourTreeNode targetNode;
+      tree.nodeDictionary.TryGetValue(name, out targetNode);
+      targetNode.onExitEvent += (EventHandler)action;
+    }
+    public void OnEnterRemoveListener(string name, Delegate action)
+    {
+      BehaviourTreeNode targetNode;
+      tree.nodeDictionary.TryGetValue(name, out targetNode);
+      targetNode.onEnterEvent -= (EventHandler)action;
+    }
+    public void OnExitRemoveListener(string name, Delegate action)
+    {
+      BehaviourTreeNode targetNode;
+      tree.nodeDictionary.TryGetValue(name, out targetNode);
+      targetNode.onExitEvent -= (EventHandler)action;
+    }
+  }
+}

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTreeEvents.cs.shmeta

@@ -0,0 +1,3 @@
+Name: BehaviourTreeEvents
+ID: 157306586
+Type: 9

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTreeNode.cs

@@ -0,0 +1,143 @@
+/*********************************************************************
+ * \file   BehaviourTreeNode.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Based off Kheng Ian's SC_BTNode.cs
+ *         Abstract implementation of individual nodes of a behaviour tree
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Mail;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SHADE_Scripting.AIBehaviour.BehaviourTree
+{
+  //ENUMERATIONS FOR NODE STATUS////////////////////////////////////////////////
+  public enum BehaviourTreeNodeStatus
+  {
+    RUNNING, //Node has not finished evaluating, to be re-evaluated
+    SUCCESS, //Node has been evaluated to be a success
+    FAILURE  //Node has been evaluated to be a failure
+  }
+
+  //CORE TRAVERSAL SYSTEM OF BEHAVIOUR TREE/////////////////////////////////////
+  public partial class BehaviourTreeNode
+  {
+    //The main tree structure that the node is in
+    //This needs to be specified by the root node so that it can permutate to its children
+    public BehaviourTree tree;
+
+    //This portion functions similar to a doubly-linked list,
+    //only having a list of children instead of a single reference
+    public BehaviourTreeNode parent;
+    protected List<BehaviourTreeNode> children = new List<BehaviourTreeNode>();
+
+    //Current status of the node
+    //Technically redundant as nodes already return their status via the
+    //Evaluate() function
+    protected BehaviourTreeNodeStatus status;
+
+    //Constructors, to be overriden by its children as needed
+    public BehaviourTreeNode(string name)
+    {
+      this.name = name;
+      parent = null;
+    }
+    public BehaviourTreeNode(string name, List<BehaviourTreeNode> children)
+    {
+      this.name = name;
+      foreach (BehaviourTreeNode child in children)
+        Attach(child);
+    }
+
+    //Attach a child node to a BT node
+    private void Attach(BehaviourTreeNode child)
+    {
+      child.parent = this;
+      children.Add(child);
+    }
+
+    //Very important
+    //Must be overriden by its derived classes (control flow / leaf / decorators)
+    //Defines the traversal method of the node
+    //Called every frame via the root from the BT
+    public virtual BehaviourTreeNodeStatus Evaluate()
+    {
+      throw new NotImplementedException("Missing implementation of Evaluate() function!");
+    }
+
+    //To attach the tree, called in the Start() tick AFTER creation of the tree
+    public void InitialiseNode(BehaviourTree tree)
+    {
+      this.tree = tree;
+
+      //Add itself to the tree's node dictionary
+      if (tree.nodeDictionary.ContainsKey(name))
+        throw new Exception("Node name: " + name + " is not unique! Please assign a unique name to each node!");
+      else
+        tree.nodeDictionary.Add(name, this);
+
+      //TODO initialise its events
+      //onEnterEvent = new
+      //onExitEvent = new
+
+      //Recurse InitialiseNode() in children
+      foreach (BehaviourTreeNode child in children)
+        child.InitialiseNode(tree);
+    }
+  }
+
+  //BLACKBOARD SYSTEM///////////////////////////////////////////////////////////
+  //To be able to access tree's data from any node in the tree
+  public partial class BehaviourTreeNode
+  {
+    //Getter and setter functions for blackboard data
+    public object GetNodeData(string key)
+    {
+      return tree.GetData(key);
+    }
+    public void SetNodeData(string key, object data)
+    {
+      tree.SetData(key, data);
+    }
+
+    //Removes blackboard data of name key
+    public bool ClearNodeData(string key)
+    {
+      return tree.ClearData(key);
+    }
+  }
+
+  //EVENT/CALLBACK SYSTEM///////////////////////////////////////////////////////
+  public class BehaviourTreeEventArgs : System.EventArgs
+  {
+    public BehaviourTreeNodeStatus returnStatus { get; set; }
+    public BehaviourTreeEventArgs(BehaviourTreeNodeStatus status) { returnStatus = status; }
+  }
+
+  public partial class BehaviourTreeNode
+  {
+    //Mainly used for the callback system
+    //"name" must be unique to each node instance
+    //Events must be replaced by custom engine counterpart
+    public string name;
+    public System.EventHandler onEnterEvent;
+    public System.EventHandler onExitEvent;
+    public void onEnter(BehaviourTreeNodeStatus status)
+    {
+      onEnterEvent?.Invoke(this, new BehaviourTreeEventArgs(status));
+    }
+    public void onExit(BehaviourTreeNodeStatus status)
+    {
+      onExitEvent?.Invoke(this, new BehaviourTreeEventArgs(status));
+    }
+  }
+
+}

Assets/Scripts/AIBehaviour/BehaviourTree/Core/BehaviourTreeNode.cs.shmeta

@@ -0,0 +1,3 @@
+Name: BehaviourTreeNode
+ID: 159032454
+Type: 9

Assets/Scripts/AIBehaviour/BehaviourTree/Flow/BehaviourTreeSelector.cs

@@ -0,0 +1,52 @@
+/*********************************************************************
+ * \file   BehaviourTreeSelector.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Based off Kheng Ian's SC_BTSelector.cs
+ *         Selectors function like "OR" nodes, returning success on the
+ *         first successful child and stopping operation
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SHADE_Scripting.AIBehaviour.BehaviourTree
+{
+  public class BehaviourTreeSelector : BehaviourTreeNode
+  {
+    public BehaviourTreeSelector(string name) : base(name) { }
+    public BehaviourTreeSelector(string name, List<BehaviourTreeNode> children) :
+      base(name, children)
+    { }
+
+    public override BehaviourTreeNodeStatus Evaluate()
+    {
+      onEnter(BehaviourTreeNodeStatus.RUNNING);
+      for (int i = 0; i < children.Count; ++i)
+      {
+        switch (children[i].Evaluate())
+        {
+          case BehaviourTreeNodeStatus.RUNNING:
+            status = BehaviourTreeNodeStatus.RUNNING;
+            onExit(BehaviourTreeNodeStatus.RUNNING);
+            return status;
+          case BehaviourTreeNodeStatus.SUCCESS:
+            status = BehaviourTreeNodeStatus.SUCCESS;
+            onExit(BehaviourTreeNodeStatus.SUCCESS);
+            return status;
+          case BehaviourTreeNodeStatus.FAILURE:
+            continue;
+        }
+      }
+      status = BehaviourTreeNodeStatus.FAILURE;
+      onExit(BehaviourTreeNodeStatus.FAILURE);
+      return status;
+    }
+  }
+}

Assets/Scripts/AIBehaviour/BehaviourTree/Flow/BehaviourTreeSelector.cs.shmeta

@@ -0,0 +1,3 @@
+Name: BehaviourTreeSelector
+ID: 167568513
+Type: 9

Assets/Scripts/AIBehaviour/BehaviourTree/Flow/BehaviourTreeSequence.cs

@@ -0,0 +1,56 @@
+/*********************************************************************
+ * \file   BehaviourTreeSequence.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Based off Kheng Ian's SC_BTSelector.cs
+ *         Sequences function like "AND" nodes, having to process every child
+ *         successfully to return a success. Returns a failure on the first
+ *         child that fails
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SHADE_Scripting.AIBehaviour.BehaviourTree
+{
+  public class BehaviourTreeSequence : BehaviourTreeNode
+  {
+    public BehaviourTreeSequence(string name) : base(name) { }
+    public BehaviourTreeSequence(string name, List<BehaviourTreeNode> children) :
+      base(name, children) { }
+
+    public override BehaviourTreeNodeStatus Evaluate()
+    {
+      {
+        onEnter(BehaviourTreeNodeStatus.RUNNING);
+        for (int i = 0; i < children.Count; ++i)
+        {
+          switch (children[i].Evaluate())
+          {
+            case BehaviourTreeNodeStatus.SUCCESS:
+              continue;
+            case BehaviourTreeNodeStatus.RUNNING:
+              status = BehaviourTreeNodeStatus.RUNNING;
+              onExit(BehaviourTreeNodeStatus.RUNNING);
+              return status;
+            case BehaviourTreeNodeStatus.FAILURE:
+              status = BehaviourTreeNodeStatus.FAILURE;
+              onExit(BehaviourTreeNodeStatus.FAILURE);
+              return status;
+          }
+        }
+        status = BehaviourTreeNodeStatus.SUCCESS;
+        onExit(BehaviourTreeNodeStatus.SUCCESS);
+        return status;
+      }
+    }
+
+  }
+}

Assets/Scripts/AIBehaviour/BehaviourTree/Flow/BehaviourTreeSequence.cs.shmeta

@@ -0,0 +1,3 @@
+Name: BehaviourTreeSequence
+ID: 154302585
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/Homeowner1.cs

@@ -0,0 +1,127 @@
+/*********************************************************************
+ * \file   Homeowner1.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  The implemented behaviour tree for the homeowner
+ *         A prototype to prove that behaviour trees can be worked and expanded
+ *         on in the custom engine for GAM300 Milestone 3 and expanded over
+ *         GAM350
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE;
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+//Variables required for the AI to function
+//To be attached to the game object via the inspector
+public partial class Homeowner1 : BehaviourTree
+{
+  private BehaviourTreeEvents _events { get; set; }
+  public override BehaviourTreeEvents events { get => _events; }
+
+  [SerializeField]
+  [Tooltip("The player the AI should chase and attempt to capture")]
+  private GameObject player;
+
+  //PATROL FIELDS///////////////////////////////////////////////////////////////
+
+  [SerializeField]
+  [Tooltip("The list of waypoints for the AI to cycle around")]
+  private List<Vector3> waypoints = new List<Vector3>();
+
+  [SerializeField]
+  [Tooltip("The AI will patrol at this speed")]
+  private float patrolSpeed;
+
+  [SerializeField]
+  [Tooltip("The speed at which the AI will chase the player if sighted")]
+  private float chaseSpeed;
+
+  [SerializeField]
+  [Tooltip("Turning speed multiplier of the AI. 10 is good")]
+  private float turningSpeed;
+
+  //FIELD OF VISION/////////////////////////////////////////////////////////////
+  [SerializeField]
+  [Tooltip("How far the AI can see up to")]
+  private float sightDistance;
+
+  [SerializeField]
+  [Tooltip("How far the eyes are offset from the AI's actual position")]
+  private Vector3 eyeOffset;
+
+  //ATTACKING///////////////////////////////////////////////////////////////////
+  [SerializeField]
+  [Tooltip("How near the player mut be to the AI for capture")]
+  private float distanceToCapture;
+
+  [SerializeField]
+  [Tooltip("How long the player should be in the attack range for successful capture")]
+  private float captureTime;
+
+
+  //There's definitely a better way to do this
+  [SerializeField]
+  [Tooltip("TO BE REMOVED IN 350. Interval multiplier between footsteps")]
+  private float footstepSFXIntervalMultiplier;
+
+  private float footstepTimeRemaining;
+}
+
+//AI tree
+public partial class Homeowner1 : BehaviourTree
+{
+  //Called at the start
+  protected override void Initialise()
+  {
+    _events = new Homeowner1Events(this);
+    events.Initialise();
+  }
+
+  //Called every tick
+  protected override void Tick()
+  {
+    events.Tick();
+
+    float velocity = GetComponent<RigidBody>().LinearVelocity.GetMagnitude();
+
+    footstepTimeRemaining -= velocity * Time.DeltaTimeF;
+    if (footstepTimeRemaining < 0.0f)
+    {
+      Debug.Log("AI Play Footstep SFX");
+      footstepTimeRemaining = footstepSFXIntervalMultiplier;
+    }
+  }
+
+  //Define the behaviour tree here
+  //Order of which nodes are created affects order of execution
+  //The tree is called from the root every tick
+  protected override BehaviourTreeNode CreateTree()
+  {
+    //Start from the root, structure it like this to make it look like a tree
+    BehaviourTreeNode root = new BehaviourTreeSelector("Root", new List<BehaviourTreeNode>
+    {
+      new BehaviourTreeSequence("Alerted", new List<BehaviourTreeNode>
+      {
+        new LeafSearch("SearchFOV", player, GetComponent<Transform>(), eyeOffset, sightDistance),
+        new BehaviourTreeSequence("CatchPlayer", new List<BehaviourTreeNode>
+        {
+          new LeafChase("Chasing", GetComponent<Transform>(), GetComponent<RigidBody>(), chaseSpeed, turningSpeed, distanceToCapture, captureTime),
+          new LeafAttack("Attacking", GameObject.Find("Player").GetValueOrDefault())
+        })
+      }),
+      new LeafPatrol("Patrol", GetComponent<Transform>(), waypoints, patrolSpeed, turningSpeed, GetComponent<RigidBody>())
+    });
+
+    return root;
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/Homeowner1.cs.shmeta

@@ -0,0 +1,3 @@
+Name: Homeowner1
+ID: 159563628
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/Homeowner1Events.cs

@@ -0,0 +1,36 @@
+/*********************************************************************
+ * \file   Homeowner1Events.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  The implemented events for the homeowner
+ *         Presently unused for GAM300
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Serialization;
+
+public partial class Homeowner1Events : BehaviourTreeEvents
+{
+  public Homeowner1Events(BehaviourTree tree) : base(tree) { }
+
+  //Called at the start
+  public override void Initialise()
+  {
+    //Tree.GetNode("Search FOV").onExitEvent += (s, e) => { PlayScreamSFX(s, e); };
+  }
+
+  //Called at every tick
+  public override void Tick()
+  {
+    
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/Homeowner1Events.cs.shmeta

@@ -0,0 +1,3 @@
+Name: Homeowner1Events
+ID: 156914017
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafAttack.cs

@@ -0,0 +1,64 @@
+/*********************************************************************
+ * \file   LeafAttack.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Leaf node implementation for AI attacking the player
+ *         when the AI is close enough after chasing
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE;
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+//VARIABLES
+public partial class LeafAttack : BehaviourTreeNode
+{
+  //Holds the player game object
+  private GameObject player;
+}
+
+//FUNCTIONS
+public partial class LeafAttack : BehaviourTreeNode
+{
+  public LeafAttack(string name, GameObject p) : base (name)
+  {
+    player = p;
+  }
+
+  public override BehaviourTreeNodeStatus Evaluate()
+  {
+    //Debug.LogWarning("LeafAttack");
+    //Fail if no target in blackboard?
+
+    onEnter(BehaviourTreeNodeStatus.RUNNING);
+
+    //Succeed when stand in hurt box for long enough
+    float captureTime = (float)GetNodeData("captureTimeLeft");
+    captureTime -= Time.DeltaTimeF;
+    SetNodeData("captureTimeLeft", captureTime);
+    //Debug.Log(captureTime.ToString());
+    if (captureTime <= 0.0f)
+    {
+      //Catch player when in range for long enough
+      player.GetScript<PlayerController>().currentState = PlayerController.RaccoonStates.CAUGHT;
+      status = BehaviourTreeNodeStatus.SUCCESS;
+      onExit(BehaviourTreeNodeStatus.SUCCESS);
+      return status;
+    }
+    
+    //Return running if not success
+
+    //Debug.Log("Success: Caught");
+    status = BehaviourTreeNodeStatus.RUNNING;
+    onExit(BehaviourTreeNodeStatus.RUNNING);
+    return status;
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafAttack.cs.shmeta

@@ -0,0 +1,3 @@
+Name: LeafAttack
+ID: 162827155
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafChase.cs

@@ -0,0 +1,135 @@
+/*********************************************************************
+ * \file   LeafChase.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Leaf node implementation for AI chasing the player
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE;
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+//VARIABLES
+public partial class LeafChase : BehaviourTreeNode
+{
+  //Used to move entity around
+  private Transform transform;
+  private RigidBody rb;
+  private float chaseSpeed;
+  private float turnSpeed;
+  private float captureDistance;
+  private float captureTime;
+}
+
+//FUNCTIONS
+public partial class LeafChase : BehaviourTreeNode
+{
+  //Despite inheriting from BehaviourTreeNode, we don't have children to this node,
+  //and hence we don't need to inherit its constructors
+  public LeafChase(string name, Transform t, RigidBody rb, float cSpd, float tSpd, float capDist, float capTime) : base (name)
+  {
+    transform = t;
+    this.rb = rb;
+    chaseSpeed = cSpd;
+    turnSpeed = tSpd;
+    captureDistance = capDist;
+    captureTime = capTime;
+  }
+
+  public override BehaviourTreeNodeStatus Evaluate()
+  {
+    //Debug.LogWarning("LeafChase");
+
+    //Fail if no target in blackboard
+    if (GetNodeData("target") == null)
+    {
+      //Debug.Log("Failure: No target in blackboard");
+      return BehaviourTreeNodeStatus.FAILURE;
+    }
+
+    onEnter(BehaviourTreeNodeStatus.RUNNING);
+
+    Transform target = (Transform)GetNodeData("target");
+
+    Vector3 normalisedDifference = target.GlobalPosition - transform.GlobalPosition;
+    normalisedDifference.y = 0.0f; //Do not consider Y
+    normalisedDifference /= normalisedDifference.GetMagnitude();
+
+    //Over maximum distance, stop chase
+    if ((transform.GlobalPosition - target.GlobalPosition).GetMagnitude() > 1000.0f)
+    {
+      //Debug.Log("Failure: Over maximum distance");
+      ClearNodeData("target");
+
+      if (GetNodeData("isAlert") != null && (bool)GetNodeData("isAlert") == true)
+      {
+        Debug.Log("AI play unalert hmm");
+      }
+      SetNodeData("isAlert", false);
+
+      status = BehaviourTreeNodeStatus.FAILURE;
+      onExit(BehaviourTreeNodeStatus.FAILURE);
+      return status;
+    }
+    else if (false) //TODO If collided against a wall
+    {
+      //Debug.Log("Running: Collided against wall");
+      SetNodeData("isPathfinding", true);
+
+      status = BehaviourTreeNodeStatus.RUNNING;
+      onExit(BehaviourTreeNodeStatus.RUNNING);
+      return BehaviourTreeNodeStatus.RUNNING;
+    }
+    //Keep chasing
+    else if ((transform.GlobalPosition - target.GlobalPosition).GetMagnitude() > captureDistance)
+    {
+      //Debug.Log("Running: Chasing");
+      Quaternion targetRotation = Quaternion.LookRotation(normalisedDifference, new Vector3(0.0f, 1.0f, 0.0f));
+      transform.LocalRotation = Quaternion.Slerp(transform.LocalRotation, targetRotation, turnSpeed * Time.DeltaTimeF);
+
+      //TODO delete this when original intendd code above works with velocity being limited correctly
+      rb.LinearVelocity = normalisedDifference * chaseSpeed;
+
+      //Reset capture timing to base
+      SetNodeData("captureTimeLeft", captureTime);
+
+      //Not capturing, don't play SFX
+      SetNodeData("isCapturing", false);
+
+      status = BehaviourTreeNodeStatus.RUNNING;
+      onExit(BehaviourTreeNodeStatus.RUNNING);
+      return BehaviourTreeNodeStatus.RUNNING;
+    }
+    //Once player is close enough, perform attack
+    else
+    {
+      //Debug.Log("Success: Near enough. Begin attack");
+      //Look at the correct direction
+      Quaternion targetRotation = Quaternion.LookRotation(normalisedDifference, new Vector3(0.0f, 1.0f, 0.0f));
+      transform.LocalRotation = Quaternion.Slerp(transform.LocalRotation, targetRotation, turnSpeed * Time.DeltaTimeF);
+
+      //Play SFX
+      if (GetNodeData("isCapturing") != null && (bool)GetNodeData("isCapturing") == false)
+      {
+        Debug.Log("AI Play capturing SFX");
+      }
+      SetNodeData("isCapturing", true);
+
+      //TODO resetting the capture time once it's less than 0 doesn't work as
+      //there is quite some time (about .1 seconds) after the timer falls below 0
+      //that the capture actually happens
+
+      status = BehaviourTreeNodeStatus.SUCCESS;
+      onExit(BehaviourTreeNodeStatus.SUCCESS);
+      return status;
+    }
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafChase.cs.shmeta

@@ -0,0 +1,3 @@
+Name: LeafChase
+ID: 151301333
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafPatrol.cs

@@ -0,0 +1,161 @@
+/*********************************************************************
+ * \file   LeafPatrol.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Leaf node implementation for patrolling AI
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE;
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+//VARIABLES HERE
+public partial class LeafPatrol : BehaviourTreeNode
+{
+  //Waypoints and movement
+  private Transform transform;
+  private List<Vector3> waypoints;
+  private RigidBody rb;
+  private float patrolSpeed;
+  private float turningSpeed;
+  private float retreatTimer = 0.0f;
+  private int currentWaypointIndex = 0;
+  private bool retreatState = false;
+
+  //Small delays between waypoints
+  private bool isWaiting = false;
+  private const float waitDuration = 2.0f;
+  private float waitCounter = 0.0f;
+}
+
+//FUNCTIONS HERE
+public partial class LeafPatrol : BehaviourTreeNode
+{
+  //Constructor, establish values here
+  //Despite inheriting from BehaviourTreeNode, we don't have children to this
+  //node, and hence we do not need to inherit its constructors
+  public LeafPatrol(string name, Transform t, List<Vector3> wps, float patrolSpeed, float turnSpeed, RigidBody rb) : base(name)
+  {
+    transform = t;
+    waypoints = wps;
+    this.patrolSpeed = patrolSpeed;
+    turningSpeed = turnSpeed;
+    this.rb = rb;
+
+    currentWaypointIndex = 0;
+  }
+
+  //When it comes to evaluating,
+  //le this node keep returning RUNNING as it is the last fallback node on tree
+  public override BehaviourTreeNodeStatus Evaluate()
+  {
+    //Debug.LogWarning("LeafPatrol");
+    onEnter(BehaviourTreeNodeStatus.RUNNING);
+    if (isWaiting) DelayAtWaypoint();
+    else MoveToWaypoint();
+
+    status = BehaviourTreeNodeStatus.RUNNING;
+    onExit(BehaviourTreeNodeStatus.RUNNING);
+    return status;
+  }
+
+  //Move and cycle between waypoints
+  private void MoveToWaypoint()
+  {
+    //Debug.Log("MoveToWaypoint");
+    //Waiting, do not move
+    if (GetNodeData("isWaiting") != null)
+    {
+      waitCounter = 0.0f;
+      isWaiting = true;
+      ClearNodeData("isWaiting");
+      return;
+    }
+    Vector3 targetPosition = waypoints[currentWaypointIndex];
+
+    //Reach waypoint by X and Z being near enough
+    //Do not consider Y of waypoints yet
+    Vector3 remainingDistance = targetPosition - transform.GlobalPosition;
+    remainingDistance.y = 0.0f;
+
+    //Reached waypoint, cycle
+    if (remainingDistance.GetSqrMagnitude() < 0.1f)
+    {
+      //Cycle waypoints
+      ++currentWaypointIndex;
+      if (currentWaypointIndex >= waypoints.Count)
+        currentWaypointIndex = 0;
+
+      waitCounter = 0.0f;
+      isWaiting = true;
+    }
+    else if (false /*Physics.OverlapSphere(_selfTransform.position, 0.3f, 1 << 8).Length > 0 && retreatState == false*/)
+    {
+      //TODO
+      //This main segment is to check if the NPC is walking into a solid wall
+      //If they are, do a raycast to find the nearest unobstructed waypoint and head there instead
+    }
+    else //Proceed to waypoint as usual
+    {
+      //Get the difference vector to the waypoint
+      //Debug.Log("Current Waypoint " + waypoints[currentWaypointIndex].x.ToString() + " " + waypoints[currentWaypointIndex].y.ToString() + " " + waypoints[currentWaypointIndex].z.ToString());
+      //Debug.Log("AI is at " + transform.GlobalPosition.x.ToString() + " " + transform.GlobalPosition.y.ToString() + " " + transform.GlobalPosition.z.ToString());
+      Vector3 normalisedDifference = waypoints[currentWaypointIndex] - transform.GlobalPosition;
+      normalisedDifference.y = 0.0f; //Do not move vertically
+      normalisedDifference /= normalisedDifference.GetMagnitude();
+      //Debug.Log("Normalised Difference x " + normalisedDifference.x.ToString() + " z " + normalisedDifference.z.ToString());
+
+      //Look at the correct direction
+      Quaternion targetRotation = Quaternion.LookRotation(normalisedDifference, new Vector3(0.0f, 1.0f, 0.0f));
+      transform.LocalRotation = Quaternion.Slerp(transform.LocalRotation, targetRotation, turningSpeed * Time.DeltaTimeF);
+
+      //transform.GlobalPosition += normalisedDifference * moveSpeed * (float)Time.DeltaTime;
+      //rb.LinearVelocity = normalisedDifference * patrolSpeed;
+
+      //ORIGINAL INTENDED CODE
+      /*rb.AddForce(new Vector3(normalisedDifference.x, 0.0f, normalisedDifference.z) * movementForceMultiplier);
+      float currentSpeed = MathF.Sqrt(rb.LinearVelocity.x * rb.LinearVelocity.x + rb.LinearVelocity.z * rb.LinearVelocity.z);
+      if (currentSpeed > patrolSpeed)
+      {
+        float adjustmentFactor = patrolSpeed / currentSpeed;
+        Vector3 adjustedVelocity = rb.LinearVelocity;
+        //adjustedVelocity *= adjustmentFactor;
+        adjustedVelocity.x = patrolSpeed;
+        adjustedVelocity.z = patrolSpeed;
+        rb.LinearVelocity = adjustedVelocity;
+      }*/
+
+      //TODO delete this when original intended code above works with velocity being limited correctly
+      if (rb != null)
+      {
+        //Debug.Log("Null check passed?");
+        rb.LinearVelocity = normalisedDifference * patrolSpeed;
+      }
+      if (retreatState)
+      {
+        if (retreatTimer < 1.0f) retreatTimer += Time.DeltaTimeF;
+        else
+        {
+          retreatState = false;
+          retreatTimer = 1.0f;
+        }
+      }
+    }
+  }
+
+  private void DelayAtWaypoint()
+  {
+    //Debug.Log("DelayAtWaypoint");
+    waitCounter += Time.DeltaTimeF;
+    if (waitCounter >= waitDuration)
+      isWaiting = false;
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafPatrol.cs.shmeta

@@ -0,0 +1,3 @@
+Name: LeafPatrol
+ID: 160826340
+Type: 9

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafSearch.cs

@@ -0,0 +1,134 @@
+/*********************************************************************
+ * \file   LeafSearch.cs
+ * \author Ryan Wang Nian Jing
+ * \brief  Leaf node implementation for AI searching for player
+ *         
+ *
+ * \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
+   or disclosure of this file or its contents without the prior written
+   consent of DigiPen Institute of Technology is prohibited.
+ *********************************************************************/
+
+using SHADE;
+using SHADE_Scripting.AIBehaviour.BehaviourTree;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+//VARIABLES HERE
+public partial class LeafSearch : BehaviourTreeNode
+{
+  private GameObject player;
+  private Transform transform;
+  private Vector3 eyeOffset;
+  private float sightDistance;
+
+}
+
+//FUNCTIONS HERE
+public partial class LeafSearch : BehaviourTreeNode
+{
+  public LeafSearch(string name, GameObject p, Transform t, Vector3 eo, float sDist) : base(name)
+  {
+    player = p;
+    transform = t;
+    eyeOffset = eo;
+    sightDistance = sDist;
+  }
+
+  public override BehaviourTreeNodeStatus Evaluate()
+  {
+    //Debug.LogWarning("LeafSearch");
+    onEnter(BehaviourTreeNodeStatus.RUNNING);
+
+    //Fail if unable to find a player
+    //Get player's transform
+    Transform plrT = player.GetComponent<Transform>();
+
+    //DELETE THIS
+    //Debug.Log("X " + MathF.Sin(transform.LocalEulerAngles.y).ToString() + " Z " + MathF.Cos(transform.LocalEulerAngles.y).ToString());
+    //Debug.Log("Looking at: " + transform.LocalRotation.y.ToString() + " To player is: " + temporary.ToString());
+    //Debug.Log("Look difference is: " + (transform.LocalRotation.y - differenceDirection.y).ToString());
+    //Debug.Log("Dot: " + Quaternion.Dot(differenceDirection, transform.GlobalRotation));
+
+    //Fail if too far from vision range
+    if ((plrT.GlobalPosition - transform.GlobalPosition).GetMagnitude() > sightDistance)
+    {
+      //Debug.Log("Failure: Too far");
+      if (GetNodeData("isAlert") != null && (bool)GetNodeData("isAlert") == true)
+      {
+        Debug.Log("AI play unalert hmm");
+      }
+      SetNodeData("isAlert", false);
+      status = BehaviourTreeNodeStatus.FAILURE;
+      onExit(BehaviourTreeNodeStatus.FAILURE);
+      return status;
+    }
+
+    //Fail if player is out of FOV
+    //TODO currently a simple dot product against negative is done, this makes it essentially be a semicircle in front at which AI can see
+    Vector3 difference = plrT.GlobalPosition - transform.GlobalPosition;
+    difference.y = 0.0f; //Disregard Y axis
+    Vector3 lookDirection = new Vector3(MathF.Sin(transform.LocalEulerAngles.y), 0.0f, MathF.Cos(transform.LocalEulerAngles.y));
+    //Debug.Log("Dot: " + Vector3.Dot(difference, lookDirection));
+    if (Vector3.Dot(difference, lookDirection) < 0.0f)
+    {
+      //Debug.Log("Failure: Out of FOV");
+      if (GetNodeData("isAlert") != null && (bool)GetNodeData("isAlert") == true)
+      {
+        Debug.Log("AI play unalert hmm");
+      }
+      SetNodeData("isAlert", false);
+      status = BehaviourTreeNodeStatus.FAILURE;
+      onExit(BehaviourTreeNodeStatus.FAILURE);
+      return status;
+    }
+
+    //LocalRotation is between -1 and 1, which are essentially the same.
+    //0 and -1/1 are 180 deg apart
+    //Quaternion differenceDirection = Quaternion.FromToRotation(Vector3.Forward, plrT.GlobalPosition - transform.GlobalPosition);
+    //Debug.Log("Looking at: " + transform.LocalRotation.y.ToString() + " To player is: " + differenceDirection.y.ToString());
+
+    //Draw a ray, succeed if ray is unobstructed
+    Vector3 eyePosition = transform.GlobalPosition + eyeOffset;
+    Ray sightRay = new Ray(eyePosition, plrT.GlobalPosition - eyePosition);
+    RaycastHit sightRayHit = Physics.Raycast(sightRay);
+    //As of November 2022, RaycastHit contains only the FIRST object hit by
+    //the ray in the Other GameObject data member
+    //Diren may likely add ALL objects hit by the ray over December
+    if (sightRayHit.Hit && sightRayHit.Other != player)
+    {
+      //Debug.Log("Failure: Ray hit obstacle named " + sightRayHit.Other.GetValueOrDefault().Name + " ID" + sightRayHit.Other.GetValueOrDefault().EntityId);
+      if (GetNodeData("isAlert") != null && (bool)GetNodeData("isAlert") == true)
+      {
+        Debug.Log("AI play unalert hmm");
+      }
+      SetNodeData("isAlert", false);
+      status = BehaviourTreeNodeStatus.FAILURE;
+      onExit(BehaviourTreeNodeStatus.FAILURE);
+      return status;
+    }
+    else if (sightRayHit.Hit && sightRayHit.Other == player)
+    {
+      //Debug.Log("Ray hit player");
+    }
+
+    //All checks for now succeeded
+    //Debug.Log("Success: Homeowner has sighted player");
+    //Write player's transform into the blackboard
+    SetNodeData("target", plrT);
+
+    if (GetNodeData("isAlert") != null && (bool)GetNodeData("isAlert") == false)
+    {
+      Debug.Log("AI Play Alerted Yell here");
+    }
+    SetNodeData("isAlert", true);
+
+    status = BehaviourTreeNodeStatus.SUCCESS;
+    onExit(BehaviourTreeNodeStatus.SUCCESS);
+    return status;
+  }
+}

Assets/Scripts/AIBehaviour/Implemented/LeafNodes/LeafSearch.cs.shmeta

@@ -0,0 +1,3 @@
+Name: LeafSearch
+ID: 166109634
+Type: 9