Function already has a body (interface)

Development Programming & Scripting UI
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1

Hello,
When I’m trying to compile my project an error :

Error	C2084	function 'void IIDamageable::DamageResult(int32)' already has a body

pops up

My .h:

#pragma once

#include "Object.h"
#include "IDamageable.generated.h"


/**
 * 
 */
UINTERFACE(MinimalAPI)
class UIDamageable : public UInterface
{
	GENERATED_UINTERFACE_BODY()
		
	
	
	
};
class IIDamageable
{
	GENERATED_IINTERFACE_BODY()
	
		virtual void TakeDamage(int32 Damage);
	
		virtual int32& GetMaxHealth() = 0;
	
		virtual int32& GetCurrentHealth() = 0;
	UFUNCTION(BlueprintImplementableEvent, Category = "Character")
		void DamageResult(int32 cHealth);
};

and .cpp

#include "Project.h"
#include "IDamageable.h"
#include "Engine.h"



UIDamageable::UIDamageable(const class FObjectInitializer& ObjectInitializer)
	: UInterface(ObjectInitializer)
{
	
}

void IIDamageable::TakeDamage(int32 Damage)
{
	GEngine->AddOnScreenDebugMessage(-1, 5, FColor::Red, "Base class error");
}

void IIDamageable::DamageResult(int32 cHealth)
{
	GEngine->AddOnScreenDebugMessage(-1, 5, FColor::Red, "Base class error");
}
2

Change to this in your .h:

UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "Character")

and in your .cpp:

void IIDamageable::DamageResult_Implementation(int32 cHealth)

For a thorough explanation, here is a video (I think you can start at part 3 which is the link, but if you have doubts, you can check the first two parts as well):

Another useful source: