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unitysamples / LyraStarterGame /Source /LyraGame /Camera /LyraCameraMode_ThirdPerson.h
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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include "LyraCameraMode.h"
#include "Curves/CurveFloat.h"
#include "LyraPenetrationAvoidanceFeeler.h"
#include "DrawDebugHelpers.h"
#include "LyraCameraMode_ThirdPerson.generated.h"
class UCurveVector;
/**
* ULyraCameraMode_ThirdPerson
*
* A basic third person camera mode.
*/
UCLASS(Abstract, Blueprintable)
class ULyraCameraMode_ThirdPerson : public ULyraCameraMode
{
GENERATED_BODY()
public:
ULyraCameraMode_ThirdPerson();
protected:
virtual void UpdateView(float DeltaTime) override;
void UpdateForTarget(float DeltaTime);
void UpdatePreventPenetration(float DeltaTime);
void PreventCameraPenetration(class AActor const& ViewTarget, FVector const& SafeLoc, FVector& CameraLoc, float const& DeltaTime, float& DistBlockedPct, bool bSingleRayOnly);
virtual void DrawDebug(UCanvas* Canvas) const override;
protected:
// Curve that defines local-space offsets from the target using the view pitch to evaluate the curve.
UPROPERTY(EditDefaultsOnly, Category = "Third Person", Meta = (EditCondition = "!bUseRuntimeFloatCurves"))
TObjectPtr<const UCurveVector> TargetOffsetCurve;
// UE-103986: Live editing of RuntimeFloatCurves during PIE does not work (unlike curve assets).
// Once that is resolved this will become the default and TargetOffsetCurve will be removed.
UPROPERTY(EditDefaultsOnly, Category = "Third Person")
bool bUseRuntimeFloatCurves;
UPROPERTY(EditDefaultsOnly, Category = "Third Person", Meta = (EditCondition = "bUseRuntimeFloatCurves"))
FRuntimeFloatCurve TargetOffsetX;
UPROPERTY(EditDefaultsOnly, Category = "Third Person", Meta = (EditCondition = "bUseRuntimeFloatCurves"))
FRuntimeFloatCurve TargetOffsetY;
UPROPERTY(EditDefaultsOnly, Category = "Third Person", Meta = (EditCondition = "bUseRuntimeFloatCurves"))
FRuntimeFloatCurve TargetOffsetZ;
// Alters the speed that a crouch offset is blended in or out
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Third Person")
float CrouchOffsetBlendMultiplier = 5.0f;
// Penetration prevention
public:
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Collision")
float PenetrationBlendInTime = 0.1f;
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Collision")
float PenetrationBlendOutTime = 0.15f;
/** If true, does collision checks to keep the camera out of the world. */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Collision")
bool bPreventPenetration = true;
/** If true, try to detect nearby walls and move the camera in anticipation. Helps prevent popping. */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Collision")
bool bDoPredictiveAvoidance = true;
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Collision")
float CollisionPushOutDistance = 2.f;
/** When the camera's distance is pushed into this percentage of its full distance due to penetration */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Collision")
float ReportPenetrationPercent = 0.f;
/**
* These are the feeler rays that are used to find where to place the camera.
* Index: 0 : This is the normal feeler we use to prevent collisions.
* Index: 1+ : These feelers are used if you bDoPredictiveAvoidance=true, to scan for potential impacts if the player
* were to rotate towards that direction and primitively collide the camera so that it pulls in before
* impacting the occluder.
*/
UPROPERTY(EditDefaultsOnly, Category = "Collision")
TArray<FLyraPenetrationAvoidanceFeeler> PenetrationAvoidanceFeelers;
UPROPERTY(Transient)
float AimLineToDesiredPosBlockedPct;
UPROPERTY(Transient)
TArray<TObjectPtr<const AActor>> DebugActorsHitDuringCameraPenetration;
#if ENABLE_DRAW_DEBUG
mutable float LastDrawDebugTime = -MAX_FLT;
#endif
protected:
void SetTargetCrouchOffset(FVector NewTargetOffset);
void UpdateCrouchOffset(float DeltaTime);
FVector InitialCrouchOffset = FVector::ZeroVector;
FVector TargetCrouchOffset = FVector::ZeroVector;
float CrouchOffsetBlendPct = 1.0f;
FVector CurrentCrouchOffset = FVector::ZeroVector;
};