Hello Brian.
I’m in chapter 31 in your tuto to transform actual RPG course to Nathan’s 3RD person Course and I’ve this error message in the console:
My enemies don’t surrond me …
NullReferenceException: Object reference not set to an instance of an object
RPG.States.Enemies.EnemyBaseState.Move (UnityEngine.Vector3 direction, System.Single deltaTime) (at Assets/Scripts/States/Enemies/EnemyBaseState.cs:26)
RPG.States.Enemies.EnemyBaseState.Move (System.Single deltaTime) (at Assets/Scripts/States/Enemies/EnemyBaseState.cs:21)
RPG.States.Enemies.EnemyIdleState.Tick (System.Single deltaTime) (at Assets/Scripts/States/Enemies/EnemyIdleState.cs:23)
RPG.States.StateMachine.Update () (at Assets/Scripts/States/StateMachine.cs:18)
Here are my scripts.
EnemyBaseState:
using UnityEngine;
namespace RPG.States.Enemies
{
public abstract class EnemyBaseState : State
{
public EnemyBaseState(EnemyStateMachine stateMachine)
{
this.stateMachine = stateMachine;
}
protected EnemyStateMachine stateMachine;
protected bool IsInChaseRange()
{
return Vector3.SqrMagnitude(stateMachine.transform.position - stateMachine.Player.transform.position) <= stateMachine.PlayerChasingRangedSquared;
}
protected void Move(float deltaTime)
{
Move(Vector3.zero, deltaTime);
}
protected void Move(Vector3 direction, float deltaTime)
{
stateMachine.CharacterController.Move((direction + stateMachine.ForceReceiver.Movement) * deltaTime);
}
protected void FaceTarget(Vector3 target, float deltaTime)
{
Vector3 directionToTarget = target - stateMachine.transform.position;
directionToTarget.y = 0;
stateMachine.transform.rotation = Quaternion.Slerp(stateMachine.transform.rotation, Quaternion.LookRotation(directionToTarget), stateMachine.RotationSpeed * deltaTime);
}
protected float GetNormalizedTime(string tag = "Attack")
{
var currentInfo= stateMachine.Animator.GetCurrentAnimatorStateInfo(0);
var nextInfo = stateMachine.Animator.GetNextAnimatorStateInfo(0);
if (stateMachine.Animator.IsInTransition(0) && nextInfo.IsTag(tag))
{
return nextInfo.normalizedTime;
}
else if(!stateMachine.Animator.IsInTransition(0) && currentInfo.IsTag(tag))
{
return currentInfo.normalizedTime;
}
return 0;
}
}
}
My Enemy
My EnemyIdleState:
using UnityEngine;
namespace RPG.States.Enemies
{
public class EnemyIdleState : EnemyBaseState
{
public EnemyIdleState(EnemyStateMachine stateMachine) : base(stateMachine)
{
}
private static readonly int FreeLookBlendTreeHash = Animator.StringToHash("FreeLookBlendTree");
private static readonly int FreeLookSpeedHash = Animator.StringToHash("FreeLookSpeed");
private bool idleSpeedReached;
public override void Enter()
{
stateMachine.Animator.CrossFadeInFixedTime(FreeLookBlendTreeHash, stateMachine.CrossFadeDuration);
}
public override void Tick(float deltaTime)
{
Move(deltaTime);
if (IsInChaseRange())
{
stateMachine.SwitchState(new EnemyChasingState(stateMachine));
return;
}
if(!idleSpeedReached)
{
stateMachine.Animator.SetFloat(FreeLookSpeedHash, 0f, stateMachine.AnimatorDampTime, deltaTime);
if (stateMachine.Animator.GetFloat(FreeLookSpeedHash) < .05f)
{
idleSpeedReached = true;
}
}
}
public override void Exit()
{
}
}
}
And, I don’t know why my StateMachine…
using UnityEngine;
namespace RPG.States
{
public abstract class StateMachine : MonoBehaviour
{
private State currentState;
public void SwitchState(State newState)
{
currentState?.Exit();
currentState = newState;
currentState?.Enter();
}
private void Update()
{
currentState?.Tick(Time.deltaTime);
}
}
}
It’s according Move method.
Line 21:(Move(Vector3.zero, deltaTime)
protected void Move(float deltaTime)
{
Move(Vector3.zero, deltaTime);
}
Line 26: (stateMachine.CharacterController.Move((direction + stateMachine.ForceReceiver.Movement) * deltaTime)
protected void Move(Vector3 direction, float deltaTime)
{
stateMachine.CharacterController.Move((direction + stateMachine.ForceReceiver.Movement) * deltaTime);
}
and the move call in the EnemyIdleState
public override void Tick(float deltaTime)
{
Move(deltaTime);
if (IsInChaseRange())
My Enemy looks correctly filled in the inspector:
I must admitt I don’t understand too much what happens…
I’ve double/triple check the script and your in the GitHub.
I don’t understand…
Any Idea?
Thanks.
François.
PS:
As I remove override animator as you said, I had an error in my weaponConfig script but in the EDITOR part.
I followed your other tuto to have an nice object creator.
So in my WeaponConfig script I have quoted SetAnimatorOverride method:
/*void SetAnimatorOverride(AnimatorOverrideController newOverride)
{
if (newOverride == animatorOverride) return;
SetUndo("Change AnimatorOverride");
animatorOverride = newOverride;
Dirty();
}*/
And
//SetAnimatorOverride((AnimatorOverrideController)EditorGUILayout.ObjectField("Outrepasser l'Animator", animatorOverride, typeof(AnimatorOverrideController), false));
in the final public override void DrawCustomInspector() method.
my player has so much friends now 
