MapBoundsModifier.h

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// Copyright Blue Isle Studios Inc 2018. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "ReactsToMatchEvents.h"
#include "MapBoundsModifier.generated.h"
 
class AProjectXCharacter;
 
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FCharacterCrossBoundsSignature, AProjectXCharacter*, Character);
DECLARE_DYNAMIC_MULTICAST_DELEGATE(FBoundsChangingSignature);
 
USTRUCT(Blueprintable)
struct FObjectInterpolation
{
    GENERATED_BODY()
 
    /* Scale the box over time from its initial scale to this scale value. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Interpolation)
    FVector Scale = FVector(0.0f, 0.0f, 0.0f);
    /* Time to animate the scale from it's initial position to the new specified scale.*/
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Interpolation)
    float Time = 1.0f;
    /* Time to wait before modifying the box' scale. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Interpolation)
    float Delay = 1.0f;
    /* First entry will be ignored if a RandomConvergenceRegion (Triggerbox) is selected. Subsequent entries will pick a new spot within itself and move there while modifying scale. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Interpolation)
    bool bPickRandomMoveLocationWithinBounds;
};
 
UCLASS()
class PROJECTX_API AMapBoundsModifier : public AActor, public IReactsToMatchEvents
{
    GENERATED_BODY()
 
public:
    /* List of interpolation stages the box will make over time. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MapBounds)
    TArray<FObjectInterpolation> ObjectInterpolations;
    /* How often to deal damage to characters outside of the box. (In seconds) */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MapBounds, meta = (ClampMin = 0.05, ClampMax = 10.0))
    float DamageCharactersInterval = 1.0f;
    /* How much characters receive when outside the box per DamageCharactersInterval. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MapBounds)
    float DamageCharactersAmount = 1.0f;
    /* Specific region that the box will choose a random point inside and move to on its first interpolation. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MapBounds)
    class ATriggerBox* RandomConvergenceRegion;
    /* Display debug information regarding this object's interpolation. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MapBounds)
    bool bDebug;
 
    /* Defined space of where characters are considered safe. */
    UPROPERTY(EditDefaultsOnly, BlueprintReadWrite, Category = MapBounds)
    class UBoxComponent* BoxComponent;
 
    UPROPERTY(BlueprintAssignable, Category = Events)
    FCharacterCrossBoundsSignature OnCharacterOutsideBounds;
    UPROPERTY(BlueprintAssignable, Category = Events)
    FCharacterCrossBoundsSignature OnCharacterInsideBounds;
    UPROPERTY(BlueprintAssignable, Category = Events)
    FBoundsChangingSignature OnBoundsChangeStart;
    UPROPERTY(BlueprintAssignable, Category = Events)
    FBoundsChangingSignature OnBoundsChangeComplete;
 
    virtual void BeginPlay() override;
    virtual void EndPlay(const EEndPlayReason::Type EndPlayReason);
    virtual void MatchStarted() override;
    virtual void Tick(float DeltaSeconds) override;
    
private:
    uint32 MovementInterpolationID = INDEX_NONE;
    uint32 ScaleInterpolationID = INDEX_NONE;
    int32 CurrentInterpolationIndex = 0;
    FVector OriginalObjectScale;
    FVector OriginalObjectPosition;
    TArray<AProjectXCharacter*> CharactersOutsideBox;
 
    AMapBoundsModifier();
 
    FVector GetRandomPointInActorBounds(const AActor* Actor = nullptr) const;
 
    void Interpolate();
    void OutsideBounds(class AProjectXCharacter* Character);
    void InsideBounds(class AProjectXCharacter* Character);
    void DamageActors();
 
    UFUNCTION(NetMulticast, Reliable)
    void Multicast_Move(const FVector_NetQuantize& MoveLocation, const uint8 InCurrentInterpolationIndex);
    UFUNCTION(NetMulticast, Unreliable)
    void Multicast_NetCorrectInterpolation(const uint8 Stage, const float MovementTimeElapsed, const float ScaleTimeElapsed);
    UFUNCTION(NetMulticast, Unreliable)
    void Multicast_DebugNetCorrections(const FVector_NetQuantize& Origin, const FVector_NetQuantize& BoxExtent);
};