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Bug World.GetOrCreateSystemsAndLogException() Cause "NullReferenceException"

Discussion in 'Entity Component System' started by QuebecDev, Jun 30, 2023.

  1. QuebecDev

    QuebecDev

    Joined:
    May 9, 2020
    Posts:
    37
    Hi,

    I am having a "NullReferenceException" after calling "World:GetOrCreateSystemsAndLogException()" in a standalone build.

    I use TypeManager.GetSystems(WorldSystemFilterFlags.Streaming) to get 6 systems.

    Does anyone know how to fix this?

    ///
    /// Logs
    ///
    Create world: Streaming | 6 systems
    NullReferenceException: Object reference not set to an instance of an object
    at Unity.Collections.LowLevel.Unsafe.UnsafeParallelHashMapBase`2[TKey,TValue].TryGetFirstValueAtomic (Unity.Collections.LowLevel.Unsafe.UnsafeParallelHashMapData* data, TKey key, TValue& item, Unity.Collections.NativeParallelMultiHashMapIterator`1[TKey]& it) [0x00008] in .\Library\PackageCache\com.unity.collections@2.1.4\Unity.Collections\UnsafeParallelHashMap.cs:895
    at Unity.Collections.LowLevel.Unsafe.UnsafeParallelHashMap`2[TKey,TValue].TryGetValue (TKey key, TValue& item) [0x00001] in .\Library\PackageCache\com.unity.collections@2.1.4\Unity.Collections\UnsafeParallelHashMap.cs:1239
    at Unity.Entities.UnmanagedSystemTypeRegistryData.FindSystemMetaIndex (System.Int64 typeHash, System.Int32& index) [0x00001] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\SystemBaseRegistry.cs:102
    at Unity.Entities.SystemBaseRegistry.GetSystemTypeMetaIndex (System.Int64 typeHash) [0x0000c] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\SystemBaseRegistry.cs:149
    at Unity.Entities.WorldUnmanagedImpl.CreateUnmanagedSystemInternal (Unity.Entities.World self, System.Int32 structSize, System.Int64 typeHash, System.Int32 typeIndex, System.Void*& systemPtr, System.Boolean callOnCreate) [0x00001] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\WorldUnmanaged.cs:467
    at Unity.Entities.WorldUnmanagedImpl.CreateUnmanagedSystem (Unity.Entities.SystemTypeIndex t, System.Int64 typeHash, System.Boolean callOnCreate) [0x00001] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\WorldUnmanaged.cs:596
    at Unity.Entities.WorldUnmanagedImpl.CreateUnmanagedSystem (Unity.Entities.SystemTypeIndex t, System.Boolean callOnCreate) [0x00008] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\WorldUnmanaged.cs:677
    at Unity.Entities.WorldUnmanaged.CreateUnmanagedSystem (Unity.Entities.SystemTypeIndex unmanagedType, System.Boolean callOnCreate) [0x00000] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\WorldUnmanaged.cs:1109
    at Unity.Entities.World.GetOrCreateSystemsAndLogException (Unity.Collections.NativeList`1[T] types, System.Int32 typesCount, Unity.Collections.AllocatorManager+AllocatorHandle allocator) [0x00078] in .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\World.cs:1256
    UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
    UnityEngine.DebugLogHandler:LogException(Exception, Object)
    UnityEngine.Logger:LogException(Exception, Object)
    UnityEngine.Debug:LogException(Exception)
    Unity.Debug:LogException(Exception) (at .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\Stubs\Unity\Debug.cs:19)
    Unity.Entities.World:GetOrCreateSystemsAndLogException(NativeList`1, Int32, AllocatorHandle) (at .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\World.cs:1288)
    Unity.Entities.World:GetOrCreateSystemsAndLogException(NativeList`1, AllocatorHandle) (at .\Library\PackageCache\com.unity.entities@1.0.11\Unity.Entities\World.cs:1348)
    Sklapps.Engine.WorldCreator.WorldManager:AddSystem(World, IEnumerable`1, ComponentSystemGroup, DefaultRootGroups) (at .\Packages\com.sklapps\Engine.WorldCreator\Statics\WorldManager.cs:255)
    Sklapps.Engine.WorldCreator.WorldManager:AddSystem(World, WorldTickSetting, IEnumerable`1) (at .\Packages\com.sklapps\Engine.WorldCreator\Statics\WorldManager.cs:220)
    Sklapps.Engine.WorldCreator.WorldManager:CreateWorld(String, Boolean, WorldTickSetting, WorldFlags, WorldSystemFilterFlags) (at .\Packages\com.sklapps\Engine.WorldCreator\Statics\WorldManager.cs:156)
    Sklapps.Engine.WorldCreator.WorldManager:InitializeScene() (at .\Packages\com.sklapps\Engine.WorldCreator\Statics\WorldManager.cs:37)
     
    QuebecDev, Jun 30, 2023
    #1

  2. QuebecDev

    QuebecDev

    Joined:
    May 9, 2020
    Posts:
    37
    Anyone?
     
    QuebecDev, Jul 1, 2023
    #2

  3. tertle

    tertle

    Joined:
    Jan 25, 2011
    Posts:
    3,626
    When are you calling it?
     
    tertle, Jul 1, 2023
    #3

  4. QuebecDev

    QuebecDev

    Joined:
    May 9, 2020
    Posts:
    37
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
     
    QuebecDev, Jul 2, 2023
    #4

  5. QuebecDev

    QuebecDev

    Joined:
    May 9, 2020
    Posts:
    37
    Yep that was the problem, Thank you... i was calling it to soon!

    This is better,

    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
     
    QuebecDev, Jul 2, 2023
    #5