DebugDrawService.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "ShowFlags.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "Misc/TransactionallySafeCriticalSection.h"
#include "DebugDrawService.generated.h"
 
class APlayerController;
class FCanvas;
class FSceneView;
class FViewport;
class UCanvas;
 
DECLARE_DELEGATE_TwoParams(FDebugDrawDelegate, UCanvas*, APlayerController*);
 
UCLASS(config=Engine, MinimalAPI)
class UDebugDrawService : public UBlueprintFunctionLibrary
{
    GENERATED_UCLASS_BODY()
 
    static ENGINE_API FDelegateHandle Register(const TCHAR* Name, const FDebugDrawDelegate& NewDelegate);
    static ENGINE_API void Unregister(FDelegateHandle HandleToRemove);
 
    static ENGINE_API void Draw(const FEngineShowFlags Flags, UCanvas* Canvas, APlayerController* PlayerController = nullptr);
 
    static ENGINE_API void Draw(const FEngineShowFlags Flags, FViewport* Viewport, FSceneView* View, FCanvas* Canvas, UCanvas* CanvasObject = nullptr, APlayerController* PlayerController = nullptr);
private:
 
    static FTransactionallySafeCriticalSection DelegatesLock;
 
    DECLARE_MULTICAST_DELEGATE_TwoParams(FDebugDrawMulticastDelegate, UCanvas*, APlayerController*);
 
    static TArray<FDebugDrawMulticastDelegate> Delegates;
    static FEngineShowFlags ObservedFlags;
};