error CS1061: Are you missing an assembly reference?

Question

Hello,

The Console is giving the error:

error CS1061: Type UnityEngine.Component' does not contain a definition for attachedRigidbody' and no extension method attachedRigidbody' of type UnityEngine.Component' could be found. Are you missing an assembly reference?

Here is the script:

 using System;
 using UnityEngine;
 
 namespace UnityStandardAssets.Effects
 {
     public class WaterHoseParticles : MonoBehaviour
     {
         public static float lastSoundTime;
         public float force = 1;
 
 
         private ParticleCollisionEvent[] m_CollisionEvents = new ParticleCollisionEvent[16];
         private ParticleSystem m_ParticleSystem;
 
 
         private void Start()
         {
             m_ParticleSystem = GetComponent<ParticleSystem>();
         }
 
 
         private void OnParticleCollision(GameObject other)
         {
             int safeLength = m_ParticleSystem.GetSafeCollisionEventSize();
 
             if (m_CollisionEvents.Length < safeLength)
             {
                 m_CollisionEvents = new ParticleCollisionEvent[safeLength];
             }
 
             int numCollisionEvents = m_ParticleSystem.GetCollisionEvents(other, m_CollisionEvents);
             int i = 0;
 
             while (i < numCollisionEvents)
             {
                 if (Time.time > lastSoundTime + 0.2f)
                 {
                     lastSoundTime = Time.time;
                 }
 
                 var col = m_CollisionEvents[i].colliderComponent;
 
                 if (col.attachedRigidbody != null)
                 {
                     Vector3 vel = m_CollisionEvents[i].velocity;
                     col.attachedRigidbody.AddForce(vel*force, ForceMode.Impulse);
                 }
 
                 other.BroadcastMessage("Extinguish", SendMessageOptions.DontRequireReceiver);
 
                 i++;
             }
         }
     }
 }

attachedRigidbody and attachedRigidbody.AddForce appear red in the script on Mono.

Any ideas how to fix it, maybe how I can provide the missing assembly reference?

Thanks!

Answer 1

Best Answer

Answer by Matthewj866 · Apr 17, 2017 at 01:24 AM

@damouss Hi there, and welcome to Unity Answers.

For clarification, attachedRigidBody lives on Collider and not GameObject: https://docs.unity3d.com/ScriptReference/Collider-attachedRigidbody.html

The issue here is that GameObject does not have any property called attachedRigidbody. In this instance, you're better off doing other.GetComponent<Rigidbody>() rather than trying to use Collider.attachedRigidBody as this will lead to longer code that (probably) does the exact same thing.

Whenever an error says X does not contain a definition for Y, this means that whatever X is, Y does not exist within it so it can never compile. This is just for future reference.

Hope this helps!

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SandipSarna · Aug 08, 2017 at 06:39 PM 0

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Hi. Iam having same issue. What wrong am i doing?

here is the script:

 using System;
 using UnityEngine;
 
 namespace UnityStandardAssets.Effects
 {
     public class WaterHoseParticles : MonoBehaviour
     {
         public static float lastSoundTime;
         public float force = 1;
 
 
         private ParticleCollisionEvent[] m_CollisionEvents = new ParticleCollisionEvent[16];
         private ParticleSystem m_ParticleSystem;
 
 
         private void Start()
         {
             m_ParticleSystem = GetComponent<ParticleSystem>();
         }
 
 
         private void OnParticleCollision(GameObject other)
         {
             int safeLength = m_ParticleSystem.GetSafeCollisionEventSize();
 
             if (m_CollisionEvents.Length < safeLength)
             {
                 m_CollisionEvents = new ParticleCollisionEvent[safeLength];
             }
 
             int numCollisionEvents = m_ParticleSystem.GetCollisionEvents(other, m_CollisionEvents);
             int i = 0;
 
             while (i < numCollisionEvents)
             {
                 if (Time.time > lastSoundTime + 0.2f)
                 {
                     lastSoundTime = Time.time;
                 }
 
                 var col = m_CollisionEvents[i].colliderComponent;
 
                 if (other.GetComponent<Rigidbody> != null)
                 {
                     Vector3 vel = m_CollisionEvents[i].velocity;
                     other.GetComponent<Rigidbody>.AddForce(vel*force, ForceMode.Impulse);    
                 }
 
                 other.BroadcastMessage("Extinguish", SendMessageOptions.DontRequireReceiver);
 
                 i++;
             }
         }
     }
 }

Answer 2

Answer by damouss · Apr 17, 2017 at 01:30 AM

Hi Matthew, thank you so much! All fixed.

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Matthewj866 · Apr 17, 2017 at 01:32 AM 0

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No problem! Glad I could help :)

Ahmed-Hassan · Jan 22, 2018 at 05:30 PM 0

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can you post the fixed script?

Answer 3

Answer by NamMap · Aug 14, 2017 at 11:02 AM

Thank you very much

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Answer 4

Hi @Matthewj866 I still have that problem and that solution is not fixing it, it comes with following error:

'Assets/Standard Assets/ParticleSystems/Scripts/WaterHoseParticles.cs(43,15): error CS0019: Operator !=' cannot be applied to operands of type method group' and null''. And this other error; "Assets/Standard Assets/ParticleSystems/Scripts/WaterHoseParticles.cs(46,12): error CS0119: Expression denotes a method group', where a variable', value' or `type' was expected". code:

 using System;
 using UnityEngine;
 
 namespace UnityStandardAssets.Effects
 {
     public class WaterHoseParticles : MonoBehaviour
     {
         public static float lastSoundTime;
         public float force = 1;
 
 
         private ParticleCollisionEvent[] m_CollisionEvents = new ParticleCollisionEvent[16];
         private ParticleSystem m_ParticleSystem;
 
 
         private void Start()
         {
             m_ParticleSystem = GetComponent<ParticleSystem>();
         }
 
 
         private void OnParticleCollision(GameObject other)
         {
             int safeLength = m_ParticleSystem.GetSafeCollisionEventSize();
 
             if (m_CollisionEvents.Length < safeLength)
             {
                 m_CollisionEvents = new ParticleCollisionEvent[safeLength];
             }
 
             int numCollisionEvents = m_ParticleSystem.GetCollisionEvents(other, m_CollisionEvents);
             int i = 0;
 
             while (i < numCollisionEvents)
             {
                 if (Time.time > lastSoundTime + 0.2f)
                 {
                     lastSoundTime = Time.time;
                 }
 
                 var col = m_CollisionEvents[i].colliderComponent;
 
                 if (other.GetComponent<Rigidbody> != null)
                 {
                     Vector3 vel = m_CollisionEvents[i].velocity;
                     other.GetComponent<Rigidbody>.AddForce(vel*force, ForceMode.Impulse);    
                 }
 
                 other.BroadcastMessage("Extinguish", SendMessageOptions.DontRequireReceiver);
 
                 i++;
             }
         }
     }
 }

Answer 5

 using System;
 using UnityEngine;
 using System.Collections;
 
 namespace UnityStandardAssets.Effects
 {
     public class WaterHoseParticles : MonoBehaviour
     {
         public static float lastSoundTime;
         public float force = 1;
         public Rigidbody attachedRigidbody;
 
         private ParticleCollisionEvent[] m_CollisionEvents = new ParticleCollisionEvent[16];
         private ParticleSystem m_ParticleSystem;
 
 
         private void Start()
         {
             m_ParticleSystem = GetComponent<ParticleSystem>();
         }
 
 
         private void OnParticleCollision(GameObject other)
         {
             int safeLength = m_ParticleSystem.GetSafeCollisionEventSize();
 
             if (m_CollisionEvents.Length < safeLength)
             {
                 m_CollisionEvents = new ParticleCollisionEvent[safeLength];
             }
 
             int numCollisionEvents = m_ParticleSystem.GetCollisionEvents(other, m_CollisionEvents);
             int i = 0;
 
             while (i < numCollisionEvents)
             {
                 if (Time.time > lastSoundTime + 0.2f)
                 {
                     lastSoundTime = Time.time;
                 }
 
                 var Collider = m_CollisionEvents[i].colliderComponent;
 
                 if (GetComponent<Collider>().attachedRigidbody != null)
                 {
                     Vector3 vel = m_CollisionEvents[i].velocity;
                     GetComponent<Collider>().attachedRigidbody.AddForce(vel*force, ForceMode.Impulse);
                 }
 
                 other.BroadcastMessage("Extinguish", SendMessageOptions.DontRequireReceiver);
 
                 i++;
             }
         }
     }
 }

error CS1061: Are you missing an assembly reference?

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