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Why 0xC0000005 error occur when I use uobject derived class that include tmap without uproperty

Hi. I had a problem. When I run my game, my game dead soon. I don't know why my game dead shortly even I tried null point check when code excuted. For example. I don't use uproperty at below code at _StateController.

 UCLASS()
     class SAVINGGAME_API ABaseCharacter : public ACharacter, public IDamageInterface
     {
         GENERATED_BODY()
     
         UBaseChracterStateController* _StateController;     
     }

But when I declare UPROPERTY on the _StateController that uobject derived class and include TMap. My game become stable. I don't know why it is fixed. Please. Let me know when I must use uproperty and how it work in code? here is my code.

ABaseCharacter.h

 UCLASS()
 class SAVINGGAME_API ABaseCharacter : public ACharacter, public IDamageInterface
 {
     GENERATED_BODY()
 
     UPROPERTY()
     UBaseChracterStateController* _StateController;     
 }

UBaseCharacterStateController.h

 UCLASS()
 class SAVINGGAME_API UBaseChracterStateController : public UObject
 {
     GENERATED_BODY()
 
 protected:
     UPROPERTY()
     TMap<ECharacterState, UBaseCharacterState*> stateMap;
 }


Product Version: UE 4.21
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asked Jan 17 '19 at 04:45 AM in C++ Programming

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TigerFish89
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