Falling Damage through Gameplay Ability System

PlayerCharacter.cpp

#include "PlayerCharacter.h"
#include "Kismet/KismetMathLibrary"
#include "AbilitySystemBlueprintLibrary.h"

APlayerCharacter::APlayerCharacter()
{
	// Change this to 1.0f to have it do 100% of remaining health damage.
	FallDamage = .9f;
	FallDamageMinimumVelocity = 1200.f;
	FallDamageMaximumVelocity = 2000.f;
	
	//Cache Tag
	LandedTag = FGameplayTag::RequestGameplayTag(FName(TEXT("Combat.State.Fall")));
}

void APlayerCharacter::Landed(const FHitResult& Hit)
{
	FGameplayEventData Payload;

	const float CurrentVelocity = FMath::Abs(GetVelocity().Z);
	const float DamagePercentage = FMath::GetMappedRangeValueClamped(FVector2D(FallDamageMinimumVelocity, FallDamageMaximumVelocity), FVector2D(0.0f, 1.0f), CurrentVelocity) * FallDamage;

	const int32 DamageAmount = GetHealth() * DamagePercentage;
  //Based on the Above Max damage should be 90% of your current health and should never kill you. Feel free to change at your own leisure.
	Payload.EventTag = LandedTag;
	Payload.Target = this;
	Payload.Instigator = this;
	Payload.EventMagnitude = DamageAmount;

	UAbilitySystemBlueprintLibrary::SendGameplayEventToActor(this, LandedTag, Payload);
}

PlayerCharacter.h

#include "MyGame.h"
#include "BaseCharacter.h"
#include "PlayerCharacter.generated.h"

/**
 * 
 */
UCLASS()
class MyGame_API APlayerCharacter : public ABaseCharacter
{
	GENERATED_BODY()

public:

	// Sets default values for this character's properties
	APlayerCharacter();

	/*
	* CONFIG | FALL DAMAGE
	*/
	/** Minimum Velocity for Damage to Apply */
	UPROPERTY(EditDefaultsOnly, Category = "Config|FallDamage")
		float FallDamageMinimumVelocity;
	/** Maximum Velocity for Damage to Apply */
	UPROPERTY(EditDefaultsOnly, Category = "Config|FallDamage")
		float FallDamageMaximumVelocity;
	/** How Much Damage to Apply */
	UPROPERTY(EditDefaultsOnly, Category = "Config|FallDamage")
		float FallDamage;

protected:

  void Landed(const FHitResult& Hit) override;

	FGameplayTag LandedTag;

};