AI FSM changes.

- Protoyped on the AI movement, found solutions for turns and
   moving after impacting the player.
- Created a full base for AI state machine.
- Worked on binding the core AI logic with the finite state machine.

Unity/CarsDash/Assets/Data/Scriptables/CarSpecs.asset

@@ -22,4 +22,4 @@ MonoBehaviour:
   rotationSpeed: 2
   tireRotationAngle: 20
   speedValue: 50
-  accelSpeed: 50
+  accelSpeed: 100

Unity/CarsDash/Assets/Scenes/Main.meta

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Unity/CarsDash/Assets/Scenes/Main/NavMesh.asset.meta

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Unity/CarsDash/Assets/Scripts/AI.meta

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Unity/CarsDash/Assets/Scripts/AI/AICarController.cs

@@ -0,0 +1,163 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class AICarController : MonoBehaviour, ICar
+{
+    #region Fields
+    private float speed;
+    private float speedMax = 35f;
+    private float speedMin = -25f;
+    private float acceleration = 10f;
+    private float brakeSpeed = 50f;
+    private float reverseSpeed = 15f;
+    private float idleSlowdown = 5f;
+
+    private float turnSpeed;
+    private float turnSpeedMax = 150f;
+    private float turnSpeedAcceleration = 150f;
+    private float turnIdleSlowdown = 250f;
+
+    private float forwardAmount;
+    private float turnAmount;
+
+    private Rigidbody carRigidbody;
+    public GameplayManager GameplayManager
+    {
+        get;
+        private set;
+    }
+    
+    #endregion
+
+    private void Awake() 
+    {
+        carRigidbody = GetComponent<Rigidbody>();
+    }
+
+    public void Init(GameplayManager gameplayManager)
+    {
+        this.GameplayManager = gameplayManager;
+    }
+
+    private void Update()
+    {
+        CalculateAccelaration();
+
+        if (speed < 0)
+        {
+            // Going backwards, invert wheels
+            // turnAmount = turnAmount * -1f;
+        }
+
+        if (turnAmount > 0 || turnAmount < 0)
+        {
+            // Turning
+            if ((turnSpeed > 0 && turnAmount < 0) || (turnSpeed < 0 && turnAmount > 0))
+            {
+                // Changing turn direction
+                float minTurnAmount = 20f;
+                turnSpeed = turnAmount * minTurnAmount;
+            }
+
+            turnSpeed += turnAmount * turnSpeedAcceleration * Time.deltaTime;
+        }
+        else
+        {
+            // Not turning
+            if (turnSpeed > 0)
+            {
+                turnSpeed -= turnIdleSlowdown * Time.deltaTime;
+            }
+            if (turnSpeed < 0)
+            {
+                turnSpeed += turnIdleSlowdown * Time.deltaTime;
+            }
+            if (turnSpeed > -1f && turnSpeed < +1f) {
+                // Stop rotating
+                turnSpeed = 0f;
+            }
+        }
+
+        float speedNormalized = speed / speedMax;
+        float invertSpeedNormalized = Mathf.Clamp(1 - speedNormalized, .75f, 1f);
+
+        turnSpeed = Mathf.Clamp(turnSpeed, -turnSpeedMax, turnSpeedMax);
+
+        carRigidbody.angularVelocity = new Vector3(0, turnSpeed * (invertSpeedNormalized * 1f) * Mathf.Deg2Rad, 0);
+
+        if (transform.eulerAngles.x > 2 || transform.eulerAngles.x < -2 || transform.eulerAngles.z > 2 || transform.eulerAngles.z < -2) 
+        {
+            transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
+        }
+    }
+
+    private void CalculateAccelaration()
+    {
+        if (forwardAmount > 0)
+        {
+            // Accelerating
+            speed += acceleration * Time.deltaTime;
+        }
+        else if (forwardAmount < 0)
+        {
+            if (speed > 0)
+            {
+                // Braking
+                speed += forwardAmount * brakeSpeed * Time.deltaTime;
+            }
+            else
+            {
+                // Reversing
+                speed += forwardAmount * reverseSpeed * Time.deltaTime;
+            }
+        }
+        else
+        {
+            // Not accelerating or braking
+            if (speed > 0)
+            {
+                speed -= idleSlowdown * Time.deltaTime;
+            }
+            if (speed < 0)
+            {
+                speed += idleSlowdown * Time.deltaTime;
+            }
+        }
+
+        speed = Mathf.Clamp(speed, speedMin, speedMax);
+
+        carRigidbody.velocity = transform.forward * speed;
+    }
+
+    public void SetInputs(float forwardAmount, float turnAmount) {
+        this.forwardAmount = forwardAmount;
+        this.turnAmount = turnAmount;
+    }
+
+    public void ClearTurnSpeed() {
+        turnSpeed = 0f;
+    }
+
+    public float GetSpeed() {
+        return speed;
+    }
+
+
+    public void SetSpeedMax(float speedMax) {
+        this.speedMax = speedMax;
+    }
+
+    public void SetTurnSpeedMax(float turnSpeedMax) {
+        this.turnSpeedMax = turnSpeedMax;
+    }
+
+    public void SetTurnSpeedAcceleration(float turnSpeedAcceleration) {
+        this.turnSpeedAcceleration = turnSpeedAcceleration;
+    }
+
+    public void StopCompletely() {
+        speed = 0f;
+        turnSpeed = 0f;
+    }
+}

Unity/CarsDash/Assets/Scripts/AI/AICarController.cs.meta

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Unity/CarsDash/Assets/Scripts/AI/AICarDriver.cs

@@ -0,0 +1,142 @@
+using System;
+using DG.Tweening;
+using Unity.VisualScripting;
+using UnityEditor.Callbacks;
+using UnityEngine;
+
+public class AICarDriver : MonoBehaviour 
+{
+
+    [SerializeField] private Transform targetPositionTranform;
+
+    private AICarController carDriver;
+    private Vector3 targetPosition;
+
+    private void Awake()
+    {
+        carDriver = GetComponent<AICarController>();
+        impactTimer = new TimerSystem();
+
+        // SetImpactTimer();
+    }
+
+    private TimerSystem impactTimer;
+    private float forwardAmount = 0f;
+    private float turnAmount = 0f;
+
+    public void UpdateMovement(Action onComplete = null) 
+    {
+        // provide a roamPoint
+        SetTargetPosition(targetPositionTranform.position);
+
+        float targetDistReach = 2f;
+        float distanceToTarget = Vector3.Distance(transform.position, targetPosition);
+
+        Debug.Log($"distanceToTarget :: {distanceToTarget}");
+
+        if (distanceToTarget > targetDistReach)
+        {
+            // Still too far, keep going
+            Vector3 dirToMovePosition = (targetPosition - transform.position).normalized;
+            float dot = Vector3.Dot(transform.forward, dirToMovePosition);
+
+            if (dot > 0)
+            {
+                // Target in front
+                forwardAmount = 1f;
+
+                float stoppingDistance = 2f;
+                float stoppingSpeed = 5f;
+
+                // if (onImpact)
+                // {
+                    // the target location should be set to next roam point or to another enemy/player 
+                    // and then DoReverse()
+                //     DoReverse();
+                // }
+                // else if (canCheck)
+                // {
+                    if (distanceToTarget < stoppingDistance && carDriver.GetSpeed() > stoppingSpeed) 
+                    {
+                        // Within stopping distance and moving forward too fast
+                        forwardAmount = -1f;
+                    }
+                // }
+
+                // after impact reverse for about 0.5 seconds
+            } 
+            else 
+            {
+                // Target behind
+                float reverseDistance = 25f;
+                if (distanceToTarget > reverseDistance) 
+                {
+                    // Too far to reverse
+                    forwardAmount = 1f;
+                    // if (onImpact)
+                    // {
+                        // the target location should be set to next roam point or to another enemy/player 
+                        // and then DoReverse()
+                    //     DoReverse();
+                    // }
+                } 
+                else 
+                {
+                    forwardAmount = -1f;
+                    // Check if DoReverse can be called instead
+                }
+            }
+
+            turnAmount = FindTurnAmt();
+        } 
+        else 
+        {
+            // Reached target
+            Debug.Log($"Target reached: {forwardAmount}");
+            if (forwardAmount == 1)
+                onComplete?.Invoke();
+
+            forwardAmount = carDriver.GetSpeed() > 15f ? -1f : 0f;
+            turnAmount = 0f;
+        }
+
+        carDriver.SetInputs(forwardAmount, turnAmount);
+    }
+
+    public void DoReverse(Action onComplete)
+    {
+        // TODO :: Set target position before doing reverse
+
+        Debug.Log($"CarDriverAI :: onImpact");
+
+        if (impactTimer.IsTimerComplete)
+        {
+            impactTimer.Init(0.5f, onComplete: () =>
+            {
+                Debug.Log($"ImpactTimer :: OnTimerComplete");
+                
+                forwardAmount = 1f;
+                turnAmount = FindTurnAmt();
+                carDriver.SetInputs(forwardAmount, turnAmount);
+                onComplete?.Invoke();
+            });
+        }
+
+        impactTimer.UpdateTimer(Time.deltaTime);
+        forwardAmount = -1f;
+        turnAmount = FindTurnAmt();
+        carDriver.SetInputs(forwardAmount, turnAmount);
+    }
+
+    private float FindTurnAmt()
+    {
+        Vector3 dirToMovePosition = (targetPosition - transform.position).normalized;
+        float angleToDir = Vector3.SignedAngle(transform.forward, dirToMovePosition, Vector3.up);
+        return angleToDir > 0 ? 1f : -1f;
+    }
+
+    public void SetTargetPosition(Vector3 targetPosition) 
+    {
+        this.targetPosition = targetPosition;
+    }
+}

Unity/CarsDash/Assets/Scripts/AI/AICarDriver.cs.meta

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Unity/CarsDash/Assets/Scripts/Abstraction/Car/ICar.cs

@@ -0,0 +1,5 @@
+
+public interface ICar
+{
+    void Init(GameplayManager gameplayManager);
+}

Unity/CarsDash/Assets/Scripts/Abstraction/Car/ICar.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM.meta

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Unity/CarsDash/Assets/Scripts/FSM/AIState.cs

@@ -0,0 +1,24 @@
+
+public enum AIState
+{
+    Idle,
+    Roam,
+    AcquireTarget,
+    Charge, 
+    Impact, 
+    Recover,
+
+    // Idle / Spawn
+    //    ↓
+    // Roam
+    //    ↓
+    // Targeting
+    //    ↓
+    // Charge
+    //    ↓
+    // Impact
+    //    ↓
+    // Recover
+    //    ↓
+    // Roam (loop)
+}

Unity/CarsDash/Assets/Scripts/FSM/AIState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/AIStateProcesser.cs

@@ -0,0 +1,25 @@
+using System;
+using UnityEngine;
+
+public class AIStateProcesser : MonoBehaviour
+{
+    private BaseState currentState;
+    private AICarDriver carDriverAI;
+    private AICarController aiCarController;
+
+    private void Awake()
+    {
+        carDriverAI = GetComponent<AICarDriver>();
+        aiCarController = GetComponent<AICarController>();
+    }
+
+    private void Start()
+    {
+        currentState = new IdleState(carDriverAI, aiCarController.GameplayManager);
+    }
+
+    private void Update()
+    {
+        currentState = currentState.ProcessStates();
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/AIStateProcesser.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/Stage.cs

@@ -0,0 +1,6 @@
+public enum STAGE
+{
+    Enter,
+    Update,
+    Exit
+}

Unity/CarsDash/Assets/Scripts/FSM/Stage.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/AcquireTargetState.cs

@@ -0,0 +1,44 @@
+using UnityEngine;
+
+public class AcquireTargetState : BaseState
+{
+    public AcquireTargetState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+    }
+
+    protected override void Update() 
+    {
+        base.Update();
+
+        Debug.Log($"### {this} Update STAGE");
+
+        // while it's roaming check for targets
+        // Find the target and once the target is found then charge toward that specific target
+        if (HasFoundTarget())
+        {
+            base.Exit();
+            nextState = new ChargeState(aiCarDriver, gameplayManager);
+        }
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+
+    public bool HasFoundTarget()
+    {
+        
+        return false;
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/AcquireTargetState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/BaseState.cs

@@ -0,0 +1,36 @@
+
+using UnityEngine;
+
+public class BaseState
+{
+    protected STAGE stage;
+    protected BaseState nextState;
+    protected Transform currentTarget;
+    protected AICarDriver aiCarDriver;
+    protected GameplayManager gameplayManager;
+
+    public BaseState(AICarDriver aiCarDriver, GameplayManager gameplayManager)
+    {
+        stage = STAGE.Enter;
+
+        this.aiCarDriver = aiCarDriver;
+        this.gameplayManager = gameplayManager;
+    }
+
+    protected virtual void Enter() => stage = STAGE.Update;
+    protected virtual void Update() => stage = STAGE.Update;
+    protected virtual void Exit() => stage = STAGE.Exit;
+
+    public BaseState ProcessStates()
+    {
+        if (stage == STAGE.Enter) Enter();
+        if (stage == STAGE.Update) Update();
+        if (stage == STAGE.Exit)
+        {
+            Exit();
+            return nextState;
+        }
+
+        return this;
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/BaseState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/ChargeState.cs

@@ -0,0 +1,36 @@
+using UnityEngine;
+
+public class ChargeState : BaseState
+{
+    public ChargeState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+        // update the values for charging
+    }
+
+    protected override void Update() 
+    {
+        base.Update();
+
+        Debug.Log($"### {this} Update STAGE");
+        aiCarDriver.UpdateMovement(() =>
+        {
+            base.Exit();
+            nextState = new ImpactState(aiCarDriver, gameplayManager);
+        });
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/ChargeState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/IdleState.cs

@@ -0,0 +1,35 @@
+
+using UnityEngine;
+
+public class IdleState : BaseState
+{
+    public IdleState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+    }
+
+    protected override void Update() 
+    {
+        base.Update();
+
+        // use a mod timer system and when timer completes then move onto the next state (RoamState)
+        base.Exit();
+
+        nextState = new AcquireTargetState(aiCarDriver, gameplayManager);
+        Debug.Log($"### {this} Update STAGE");
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+}

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Unity/CarsDash/Assets/Scripts/FSM/States/ImpactState.cs

@@ -0,0 +1,34 @@
+using UnityEngine;
+
+public class ImpactState : BaseState
+{
+    public ImpactState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+    }
+
+    protected override void Update() 
+    {
+        base.Update();
+
+        Debug.Log($"### {this} Update STAGE");
+
+        // do actions when an impact happens
+        base.Exit();
+        nextState = new RecoverState(aiCarDriver, gameplayManager);
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/ImpactState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/RecoverState.cs

@@ -0,0 +1,35 @@
+using UnityEngine;
+
+public class RecoverState : BaseState
+{
+    public RecoverState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+    }
+
+    protected override void Update() 
+    {
+        base.Update();
+
+        Debug.Log($"### {this} Update STAGE");
+        aiCarDriver.DoReverse(() =>
+        {
+            base.Exit();
+            nextState = new RoamState(aiCarDriver, gameplayManager);
+        });
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/RecoverState.cs.meta

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Unity/CarsDash/Assets/Scripts/FSM/States/RoamState.cs

@@ -0,0 +1,65 @@
+using UnityEngine;
+
+public class RoamState : BaseState
+{
+    private bool hasCompletedRoaming = false;
+    private float roamDuration = 2f;
+
+    private Vector3 currentRoamingPoint = Vector3.zero;
+    private TimerSystem roamTimerSystem = null;
+
+    public RoamState(AICarDriver aiCarDriver, GameplayManager gameplayManager) : base(aiCarDriver, gameplayManager)
+    {
+        Debug.Log($"### {this} constructor");
+    }
+
+    protected override void Enter()
+    {
+        base.Enter();
+
+        Debug.Log($"### {this} Enter STAGE");
+
+        // get the target point 
+        currentRoamingPoint = gameplayManager.GetRoamingPoint();
+        aiCarDriver.SetTargetPosition(currentRoamingPoint);
+
+        roamTimerSystem = new TimerSystem();
+        hasCompletedRoaming = false;
+        roamTimerSystem.Init(roamDuration, onComplete: () => hasCompletedRoaming = true);
+    }
+
+    protected override void Update()
+    {
+        base.Update();
+
+        // keep roaming for a specific duration
+        
+        // use a set of target points which would be placed on the arena, 
+        // get one of the target point and then start roaming towards that point.
+        // if an enemy/player is found within a specific radius and in front of- 
+        // -the AI then go to the next state after acquiring the target- 
+        // -(next state could be ChargeState)
+
+        // Set Target location
+
+        if (!hasCompletedRoaming)
+        {
+            roamTimerSystem.UpdateTimer(Time.deltaTime);
+            aiCarDriver.UpdateMovement();
+        }
+        else
+        {
+            base.Exit();
+            nextState = new AcquireTargetState(aiCarDriver, gameplayManager);
+        }
+
+        Debug.Log($"### {this} Update STAGE");
+    }
+
+    protected override void Exit()
+    {
+        base.Exit();
+
+        Debug.Log($"### {this} Exit STAGE");
+    }
+}

Unity/CarsDash/Assets/Scripts/FSM/States/RoamState.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d2b520dcd5d374b71b0fed8e64923e5b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity/CarsDash/Assets/Scripts/Gameplay/Car/PlayerCarController.cs

@@ -4,10 +4,8 @@ using UnityEngine;
 using System.Collections;
 using System.ComponentModel;
 using UnityEngine.SceneManagement;
-using UnityEngine.EventSystems;
-using Newtonsoft.Json;
 
-public class CarController : MonoBehaviour
+public class PlayerCarController : MonoBehaviour, ICar
 {
     [SerializeField] private bool isDebugTest = false;
 
@@ -17,7 +15,7 @@ public class CarController : MonoBehaviour
         
     [SerializeField] private Rigidbody carRigidbody;
 
-    [SerializeField] private CarSpecs carSpecs;
+    [SerializeField] private PlayerCarSpecs carSpecs;
     [SerializeField] private Vector3 customCenterOfMass;
     [SerializeField] private AnimationCurve steerLeftAnimCurve;
     [SerializeField] private AnimationCurve steerRightAnimCurve;
@@ -33,7 +31,7 @@ public class CarController : MonoBehaviour
     private float tiresInGround = 0f;
 
     [Category("Script-Object-Refs.")]
-    private CarSystem carSystem;
+    private PlayerCarSystem carSystem;
     private TimerSystem timerSystem;
 
     [Category("Tags.")]
@@ -50,14 +48,22 @@ public class CarController : MonoBehaviour
     public Action<float> OnCarRotate;
     public Action<string> OnGameOver;
 
-    public void Init()
+    public GameplayManager GameplayManager
     {
+        get;
+        private set;
+    }
+
+    public void Init(GameplayManager gameplayManager)
+    {
+        this.GameplayManager = gameplayManager;
+
         isGameOver = false;
         tiresCount = tireTransforms.Length;
 
         timerSystem = new TimerSystem();
-        remTime = timerSystem.Timer;
-        carSystem = new CarSystem(this, carRigidbody, carSpecs, frontTireTransforms, steerLeftAnimCurve: steerLeftAnimCurve, steerRightAnimCurve: steerRightAnimCurve, accelAnimCurve: accelAnimCurve);
+        // remTime = timerSystem.Timer;
+        carSystem = new PlayerCarSystem(this, carRigidbody, carSpecs, frontTireTransforms, steerLeftAnimCurve: steerLeftAnimCurve, steerRightAnimCurve: steerRightAnimCurve, accelAnimCurve: accelAnimCurve);
     }
 
     private void EnableGameOverState()

Unity/CarsDash/Assets/Scripts/Gameplay/Car/PlayerCarSpecs.cs

@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using UnityEngine;
 
 [CreateAssetMenu(fileName = "CarSpecs", menuName = "CarSpecs", order = 1)]
-public class CarSpecs : ScriptableObject
+public class PlayerCarSpecs : ScriptableObject
 {
     public float dampingForce = 50;
     public float strength = 500;

Unity/CarsDash/Assets/Scripts/Gameplay/Car/PlayerCarSystem.cs

@@ -3,10 +3,10 @@ using System.Collections.Generic;
 using System.ComponentModel;
 using UnityEngine;
 
-public class CarSystem : ICarComponents
+public class PlayerCarSystem : ICarComponents
 {
     [Category("Global Attributes")] private Rigidbody carRigidbody;
-    private CarSpecs carSpecs;
+    private PlayerCarSpecs carSpecs;
 
     [Category("Animation Curves")] private AnimationCurve steerLeftAnimCurve;
     [Category("Animation Curves")] private AnimationCurve steerRightAnimCurve;
@@ -29,9 +29,9 @@ public class CarSystem : ICarComponents
     private Vector3 accelForce;
 
     private Transform[] frontTireTransforms;
-    private CarController gameplayControllerInst;
+    private PlayerCarController gameplayControllerInst;
 
-    public CarSystem(CarController gameplayController, Rigidbody carRigidbody = null, CarSpecs carSpecs = null, Transform[] frontTireTransforms = null,
+    public PlayerCarSystem(PlayerCarController gameplayController, Rigidbody carRigidbody = null, PlayerCarSpecs carSpecs = null, Transform[] frontTireTransforms = null,
         AnimationCurve steerLeftAnimCurve = null, AnimationCurve steerRightAnimCurve = null, AnimationCurve accelAnimCurve = null)
     {
         gameplayControllerInst = gameplayController;

Unity/CarsDash/Assets/Scripts/Gameplay/GameplayManager.cs

@@ -1,12 +1,17 @@
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using UnityEngine;
 
 public class GameplayManager : MonoBehaviour, IBase, IBootLoader, IDataLoader
 {
-    [SerializeField] private CarController carController;
+    [SerializeField] private GameObject[] allCarsInScene; // contains enemy cars and player car
+    []
+    [SerializeField] private PlayerCarController playerCarController; // TODO :: initialize roamPoints here
 
-    public CarController CarController => carController;
+    [SerializeField] private List<Transform> roamPoints; // TODO :: initialize roamPoints here
+
+    public PlayerCarController CarController => playerCarController;
 
     public void Initialize()
     {
@@ -15,6 +20,21 @@ public class GameplayManager : MonoBehaviour, IBase, IBootLoader, IDataLoader
 
     public void InitializeData()
     {
-        carController.Init();
+        foreach (var car in allCarsInScene)
+        {
+            car.GetComponent<ICar>().Init(this);
+        }
+    }
+
+    public Vector3 GetRoamingPoint()
+    {
+        var randomIndex = Random.Range(0, roamPoints.Count);
+        return roamPoints[randomIndex].position;
+    }
+
+    public Transform GetTargetToAttack()
+    {
+        var randomIdx = Random.Range(0, allCarsInScene.Length);
+        return allCarsInScene[randomIdx].transform;
     }
 }

Unity/CarsDash/Assets/Scripts/Timer/TimerSystem.cs

@@ -1,29 +1,50 @@
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class TimerSystem
 {
-    private float timer = 10f;
-    private float timerIncrement = 5f;
+    private float timeRem;
+    private float maxTimeAvail;
 
-    public float Timer => timer;
-
-    public float TimerIncrement = 5f;
-
-    public TimerSystem()
+    private Action onTimerComplete = null;
+    private Action onTimerInProgress = null;
+    public bool IsTimerComplete
     {
-        CarController.OnCheckpointReached += UpdateTimer;
+        get;
+        private set;
     }
 
-    private void IncreaseTimer()
+    public bool IsInitialized
     {
-        timer += timerIncrement;
+        get;
+        private set;
     }
 
-    public void UpdateTimer(float remTime)
+    public void Init(float maxTimeAvail, Action onComplete = null, Action inProgress = null, Action onStart = null)
     {
-        timer = remTime;
-        IncreaseTimer();
+        timeRem = 0;
+        IsTimerComplete = false;
+        IsInitialized = true;
+
+        this.maxTimeAvail = maxTimeAvail;
+        this.onTimerComplete = onComplete;
+        this.onTimerInProgress = inProgress;
+    }
+
+    public void UpdateTimer(float deltaTime)
+    {
+        if (timeRem < maxTimeAvail)
+        {
+            timeRem += deltaTime;
+            onTimerInProgress?.Invoke();
+        }
+        else
+        {
+            timeRem = 0;
+            onTimerComplete?.Invoke();
+            IsTimerComplete = true;
+        }
     }
 }

Unity/CarsDash/ProjectSettings/NavMeshAreas.asset

@@ -69,7 +69,7 @@ NavMeshProjectSettings:
     cost: 1
   - name: 
     cost: 1
-  m_LastAgentTypeID: -887442657
+  m_LastAgentTypeID: -1372625422
   m_Settings:
   - serializedVersion: 2
     agentTypeID: 0
@@ -85,7 +85,28 @@ NavMeshProjectSettings:
     manualTileSize: 0
     tileSize: 256
     accuratePlacement: 0
+    maxJobWorkers: 0
+    preserveTilesOutsideBounds: 0
+    debug:
+      m_Flags: 0
+  - serializedVersion: 2
+    agentTypeID: -1372625422
+    agentRadius: 0.5
+    agentHeight: 1.2
+    agentSlope: 45
+    agentClimb: 0.4
+    ledgeDropHeight: 0
+    maxJumpAcrossDistance: 0
+    minRegionArea: 2
+    manualCellSize: 0
+    cellSize: 0.16666667
+    manualTileSize: 0
+    tileSize: 256
+    accuratePlacement: 0
+    maxJobWorkers: 0
+    preserveTilesOutsideBounds: 0
     debug:
       m_Flags: 0
   m_SettingNames:
   - Humanoid
+  - New Agent