Added State Management code

Added AI code for enemies utilizing State Management
Created simple enemy prefab with the AI

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Assets/Scriptables/Player/PlayerMainController.cs

@@ -11,7 +11,7 @@ using UnityEngine.UI;
 [SelectionBase]
 public class Player : MonoBehaviour {
   [Header("Asset/Prefab")]
-  [SerializeField] public BuilderHandlerRunner Builder;
+  [SerializeField] public BuilderManager Builder;
 
   [Header("Movement")]
   [SerializeField] private Rigidbody2D RigidBody;
@@ -46,7 +46,7 @@ public class Player : MonoBehaviour {
   private enum Directions { Left, Right, Up, Down }
 
   void Awake() {
-    Builder = GetComponent<BuilderHandlerRunner>();
+    Builder = GetComponent<BuilderManager>();
     VfxDashHandler = new VfxHandlerBase(VfxDash, 5, 5);
     SetClass(1);
   }

Assets/Scripts/Runtime/AI/Base/AgentController.cs

@@ -1,17 +0,0 @@
-using UnityEngine;
-
-namespace AI.Base {
-  public abstract class AgentController : MonoBehaviour {
-    protected IState currentState;
-
-    protected virtual void Update() {
-      currentState?.Tick();
-      IState next = currentState?.CheckTransitions();
-      if (next != null && next != currentState) {
-        currentState.OnExit();
-        currentState = next;
-        currentState.OnEnter();
-      }
-    }
-  }
-}

Assets/Scripts/Runtime/AI/Base/IState.cs

@@ -1,8 +1,10 @@
-namespace AI.Base {
+using System.Runtime.InteropServices.WindowsRuntime;
-  public interface IState {
+using UnityEngine;
-    void OnEnter();
+
-    void Tick();
+public interface IState {
-    void OnExit();
+  public void Initialize(Transform ownerTransform);
-    IState CheckTransitions();
+  public void Start();
-  }
+  public void Tick();
+  public void Stop();
+  public virtual IState GetNextState() => null;
 }

Assets/Scripts/Runtime/AI/Base/StateManager.cs

@@ -0,0 +1,34 @@
+using Unity.IO.LowLevel.Unsafe;
+using UnityEngine;
+
+namespace AI.Base {
+  abstract public class StateManager : MonoBehaviour {
+    protected IState CurrentState;
+
+    virtual protected void Update() {
+      CurrentState?.Tick();
+      IState next = GetNextState();
+      if (next != null && next != CurrentState) {
+        CurrentState.Stop();
+        CurrentState = next;
+        CurrentState.Start();
+      }
+    }
+
+    abstract protected IState GetNextState();
+  }
+
+  public class StateNode : ScriptableObject, IState {
+    protected Transform Owner;
+
+    virtual public void Initialize(Transform ownerTransform) {
+      Owner = ownerTransform;
+    }
+
+    virtual public void Start() {}
+    virtual public void Stop() {}
+    virtual public void Tick() {}
+
+    virtual public IState GetNextState() => this;
+  }
+}

Assets/Scripts/Runtime/AI/StateMachines/EnemyAttackState.cs

@@ -0,0 +1,10 @@
+using AI.Base;
+using System;
+using UnityEngine;
+
+  [CreateAssetMenu(menuName = "AI/Enemy/EnemyAttackState")]
+  public class EnemyAttackState : StateNode {
+    override public void Start() { Debug.Log("Entering Idle"); }
+    override public void Tick() {  }
+    override public void Stop() { Debug.Log("Exiting Idle"); }
+  }

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Assets/Scripts/Runtime/AI/StateMachines/EnemyChaseState.cs

@@ -0,0 +1,26 @@
+using AI.Base;
+using System;
+using UnityEngine;
+
+  [CreateAssetMenu(menuName = "AI/Enemy/EnemyChaseState")]
+  public class EnemyChaseState : StateNode {
+    public float Speed = 3f;
+
+    private Transform Player;
+
+    override public void Start() {
+      Player = GameObject.FindGameObjectWithTag("Player").transform;
+      Debug.Log("Entering Chase");
+    }
+
+    override public void Tick() {
+      if (Owner != null && Player != null) {
+        Vector2 dir = (Player.position - Owner.position).normalized;
+        Owner.position += (Vector3)dir * Speed * Time.deltaTime;
+      }
+    }
+
+    override public void Stop() {
+      Debug.Log("Exiting Chase");
+    }
+  }

Assets/Scripts/Runtime/AI/StateMachines/EnemyChaseState.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 5f2962a1dddd6484e913c62893d7e512

Assets/Scripts/Runtime/AI/StateMachines/EnemyStateMachine.cs

@@ -1,15 +0,0 @@
-using AI.Base;
-using UnityEngine;
-
-namespace AI.StateMachines {
-  public class EnemyStateMachine : AgentController {
-    public IState IdleState;
-    public IState ChaseState;
-
-    protected override void Start() {
-      base.Start();
-      currentState = IdleState;
-      currentState?.OnEnter();
-    }
-  }
-}

Assets/Scripts/Runtime/AI/StateMachines/EnemyStateMachine.cs.meta

@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: 71ab834a15cf8184ca8a951d8ea332bb

Assets/Scripts/Runtime/AI/StateMachines/EnemyStateManager.cs

@@ -0,0 +1,54 @@
+using AI.Base;
+using UnityEngine;
+using static TMPro.SpriteAssetUtilities.TexturePacker_JsonArray;
+
+  public class EnemyStateManager : StateManager {
+    [Header("States")]
+    [SerializeField] public StateNode WalkState;
+    [SerializeField] public StateNode ChaseState;
+    [SerializeField] public StateNode AttackState;
+
+    [Header("Attributes")]
+    [SerializeField] private float ChaseDistance = 10f;
+    [SerializeField] private float AttackDistance = 1f;
+
+    private Transform Player;
+
+    protected void Start() {
+      Player = GameObject.FindGameObjectWithTag("Player")?.transform;
+      WalkState.Initialize(this.transform);
+      ChaseState.Initialize(this.transform);
+      AttackState.Initialize(this.transform);
+      CurrentState = WalkState;
+      CurrentState.Start();
+    }
+
+    override protected IState GetNextState() {
+      if (Player == null)
+        return CurrentState;
+
+      float dist = Vector2.Distance(transform.position, Player.position);
+      if (dist < AttackDistance)
+        return AttackState.GetNextState();
+      else if (dist < ChaseDistance)
+        return ChaseState.GetNextState();
+      else
+        return WalkState.GetNextState();
+    }
+
+    private void OnDrawGizmos() {
+      DrawChaseDistance();
+      DrawAttackDistance();
+    }
+
+    private void DrawChaseDistance() {
+      Gizmos.color = CurrentState == (IState)ChaseState ? Color.yellow : Color.green;
+      Vector2 center = this.transform.position;
+      Gizmos.DrawWireSphere(center, ChaseDistance);
+    }
+    private void DrawAttackDistance() {
+      Gizmos.color = CurrentState == (IState)AttackState ? Color.red : Color.green;
+      Vector2 center = this.transform.position;
+      Gizmos.DrawWireSphere(center, AttackDistance);
+    }
+  }

Assets/Scripts/Runtime/AI/StateMachines/EnemyStateManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: a5c89455bac58d943a2e1e110d37a24d

Assets/Scripts/Runtime/AI/StateMachines/EnemyWalkState.cs

@@ -0,0 +1,12 @@
+using AI.Base;
+using System;
+using UnityEngine;
+
+  [CreateAssetMenu(menuName = "AI/Enemy/EnemyWalkState")]
+  public class EnemyWalkState : StateNode {
+
+    override public void Start() { Debug.Log("Entering Idle"); }
+    override public void Tick() { }
+    override public void Stop() { Debug.Log("Exiting Idle"); }
+
+  }

Assets/Scripts/Runtime/AI/StateMachines/EnemyWalkState.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: e82366a8b141d1c4587e07f13e902f29

Assets/Scripts/Runtime/Characters/Player/Building/BuilderSettings.cs

@@ -1,11 +1,28 @@
+using AI.Base;
 using UnityEngine;
 
 [CreateAssetMenu(menuName = "Custom/BuilderSettings")]
-public class BuilderSettings : ScriptableObject {
+public class BuilderSettings : ScriptableObject, IState {
   [Header("Build Prefabs")]
   public GameObject ObjToSpawn;
   public GameObject ObjAsPreview;
 
   [Header("VFX")]
   public GameObject Vfx;
+
+  public void Initialize(Transform ownerTransform) {
+    throw new System.NotImplementedException();
+  }
+
+  public void Start() {
+    throw new System.NotImplementedException();
+  }
+
+  public void Stop() {
+    throw new System.NotImplementedException();
+  }
+
+  public void Tick() {
+    throw new System.NotImplementedException();
+  }
 }

Assets/Scripts/Runtime/Enemies.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 22398a98badb3d8418a9b3cccc131ae6
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Runtime/GameManagement.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b3faa1c4d29927b43b1e2c49d090a33d
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Runtime/GameManagement/GameManager.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UnityEngine;
+
+namespace Assets.Scripts.Runtime.GameManagement {
+  public class GameManager : MonoBehaviour {
+    public static bool IsPaused { get; private set; }
+    [SerializeField] private GameObject pauseMenuUI;
+
+    void Update() {
+      if (Input.GetKeyDown(KeyCode.Escape))
+        TogglePause();
+    }
+
+    public void TogglePause() {
+      IsPaused = !IsPaused;
+      Time.timeScale = IsPaused ? 0f : 1f;
+      AudioListener.pause = IsPaused;
+      pauseMenuUI.SetActive(IsPaused);
+    }
+  }
+}

Assets/Scripts/Runtime/GameManagement/GameManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 7691458bb4726aa4da3d14211bfa3e4d