SendMessage not working after scene restart

Unity Engine
1

Hi,
I have a problem. My GameObject.SendMessage in OnCollisionEnter() fails to work after restart, but not globally, just for one class that calls it. It worked like for several months of development, then stopped. I don’t know where to look for a bug. Any ideas? Thanks in advance.

2

Try posting your code.

3

I’ve tried to change SendMessage to direct call - it fails as well. I seem to be losing reference, am I?

4

Here I send…

public virtual void OnCollisionEnter (Collision collision)
    {
        if (mHitMode == HitMode.Collision)
        {
            if (IsTargetMatchingFilter(collision.collider.gameObject))
            {
                if (!mHasCollided && mLastCollidedObject != collision.collider.gameObject)
                {
                    mHasCollided = true;
                    mLastCollidedObject = collision.collider.gameObject;
                    //raise event -- target hit by source
                    Event_WeaponHitTarget eventWeaponHitTarget = new Event_WeaponHitTarget(mDamageDealt);
                    eventWeaponHitTarget.mTargetObject = collision.collider.gameObject;
                    eventWeaponHitTarget.mSourceObject = this.gameObject;

                    Events.instance.Raise(eventWeaponHitTarget);

                    Debug.Log ("WeaponBase OnCollisionEnter if (mHitMode == HitMode.Collision) BEFORE OnHit");
                    OnHit(collision.collider.gameObject);

                    if (mUseEventSoundsCollision) 
                    {
                        Event_Sound eventSound = new Event_Sound ();
                        eventSound.mPos = transform.position;
                        eventSound.mSoundType = SoundType.ProjectileCollision;
                        eventSound.m2D = false;
                        eventSound.mSoundLooping = false;

                        Events.instance.Raise (eventSound);
                    }
                }

            }
        }   

        if (mUseLight && mLightUpOnCol && mLight != null)
            StartCoroutine (LightUpLightOnCol(mLightUpTime));
    }

and here I receive…

public void ChangeHealth(float mDamageTaken)
    {
        Debug.Log ("Character ChangeHealth NAME "  + gameObject.name);

        if (!mIsTalking)
        {
            if (Mathf.Abs(mDamageTaken) > 0f && GetState() != State.Dead)
            {
                //        print ("character " + this.gameObject.name + " took " + mDamageTaken + " damage.");

                mHitsReceived++;
                mTimeSinceLastHit = 0f;

                //we dont want to retrigger anims once show anim of hit - we count dam, but not trigger anim
                if (GetState() != State.GotHit && GetState() != State.GotHitPending && GetState() != State.GotHitSeriously)
                {
                    if (IsHitSeriously())
                    {
                        SetState (State.GotHitSeriously);
                    }
                    else
                    {
                        SetState (State.GotHit);
                    }
                }
                 
                mHitPointsBeforeDeath = mHitPoints;
                Debug.Log ("Char " + gameObject.name + " ChangeHealth mHitPoints BEFORE hit " + mHitPoints);
                mHitPoints += mDamageTaken * mDamageTakenMultiplier * mNonHitZoneDamMult;
                Debug.Log ("Char " + gameObject.name + " ChangeHealth mHitPoints AFTER hit " + mHitPoints);
                //show hitPointUI if enabled
                if (mShowHitPointUI)
                {
                    ShowHitPointUI(mDamageTaken);
                }

                // If the health runs out, then Die.
                if (mHitPoints <= 0 && !mIsDead && mIsDestructible && GetState() != State.Dead)
                    Die();

                // Make sure that the health never exceeds the maximum health
                if (mHitPoints > mHitPointsInitial)
                    mHitPoints = mHitPointsInitial;

                //reset damage taken
                mDamageTaken = 0f;
            }
        } 
    }
5

I am using U 5.4.0f3 and the old way of restarting a scene by Application.LoadLevel()

6

I found the source, thanks! It was a lack of null check in a seemingly unrelated script that handled the UI of a super-state.

1 Like