DeployableControlledRocket.h

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// Copyright Blue Isle Studios Inc 2018. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Weapons/Deployable/DeployableControllable.h"
#include "DeployableControlledRocket.generated.h"
 
class UStaticMeshComponent;
 
UCLASS()
class PROJECTX_API ADeployableControlledRocket : public ADeployableControllable
{
    GENERATED_UCLASS_BODY()
    
public:
    virtual void DeployComplete() override;
    virtual void Died(float Damage, FDamageEvent const& DamageEvent, AController* EventInstigator, AActor* DamageCauser, APlayerState* InstigatorPlayerState) override;
 
protected:
    virtual void BeginPlay() override;
    virtual void Tick(float DeltaTime) override;
    virtual void UpdateDeployableTransform(float DeltaTime) override;
    virtual void QueryAndInformTargets();
    virtual void TriggerExplosion(const FVector& ExplosionLocation);
    virtual bool CanOwningWeaponInstanceFire() const { return true; }
    virtual void StopControlling() override;
    virtual void Fire() override;
 
    UFUNCTION(Reliable,Server)
    void Server_Reliable_Fire();
 
    UFUNCTION()
    virtual void OnRocketHit(UPrimitiveComponent* HitComponent, AActor* OtherActor, UPrimitiveComponent* OtherComponent, FVector NormalImpulse, const FHitResult& Hit);
 
    UFUNCTION(BlueprintImplementableEvent, Category = "Rocket|Explosion")
    void K2_PlayExplosionEffects(const FVector& ExplosionLocation);
 
    UFUNCTION(BlueprintImplementableEvent, Category = "Rocket|Widget")
    void SetWarningState(bool bNewState);
 
    UFUNCTION(NetMulticast, Unreliable)
    virtual void Multicast_Explosion_PlayExplosionEffects_Unreliable(const FVector& ExplosionLocation);
 
protected:
    /* Distance in cms from the tip of the rocket forward that we're using to check for potential targets and warn them */
    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Rocket")
    float DistanceCheckForWarningTargets = 20000.f;
    /* Anyone inside this radius will get the warning whether they're within the min dot distance or not */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket")
    float RadiusForWarningTargets = 2000.f;
    /* Min dot between the rocket's forward vector and the direction towards the target in order to issue the rocket warning */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket")
    float TargetWarningMinDot = 0.93f;
    /* Should we apply the velocity only after the deployment is complete? */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement")
    bool bApplyLaunchVelocityAfterDeploy = false;
    /* Launch velocity of the rocket (relative to the camera) */
    UPROPERTY(EditDefaultsOnly, Category ="Rocket|Movement")
    FVector LaunchVelocity = FVector(1000,0,0);
    /* The maximum speed this rocket can */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement")
    float MaxSpeed = 6000.f;
    /* Speed increment to be applied per second to the rocket */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement")
    float SpeedIncreasePerSecond = 1000;
    /* How fast does our mesh interpolate our position to the target one */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement")
    float LocationInterpolationSpeed = 2.f;
    /* How fast does our mesh interpolate our position to the target one */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement")
    float RotationInterpolationSpeed = 2.f;
 
    /* The rate in which we use to apply a "breaking force"to the yaw rotation */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement|Rotation")
    float YawBreakingRate = 1.f;
    /* The rate in which we use to lerp our Pitch */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement|Rotation")
    float PitchAccelerationRate = 1.f;
    /* The min/max rate in which we can accelerate our yaw rotation */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement|Rotation")
    FVector2D MinMaxYawRotationAcceleration = FVector2D(-2.f, 2.f);
    /* A baked in offset that's used during interpolation to match the desired rotation of the rocket */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Movement|Rotation")
    FRotator RocketMeshRotationOffset = FRotator::ZeroRotator;
 
    /* Damage Type to apply on explosion */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    TSubclassOf<UDamageType> ExplosionDamageType;
    /* The amount of depenetration we apply to the explosion origin on rocket collision*/
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    float ImpactDepenetrationAmount = 100.f;
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    bool bUseWeaponDamageAsImpactdamage = true;
    /* The explosion radius */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    float ExplosionRadius = 500.f;
    /* The minimum damage this explosion can cause */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    float ExplosionDamageMin = 5000.f;
    /* The maximum damage this explosion can cause */
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    float ExplosionDamageMax = 5000.f;
    /* Damage falloff from the epicenter to the border of the explosion*/
    UPROPERTY(EditDefaultsOnly, Category = "Rocket|Explosion")
    float ExplosionDamageFallOff = 0.8f;
    /* How long (in seconds) since launch to apply the maximum lifetime-based damage multiplier */
    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Rocket|Explosion")
    float MaxLifetimeForDamageMultiplication = 5.f;
    /* A curve to control the Ease of the damage multiplication based on the lifetime, if no curve is provided (current lifetime / MaxLifetimeForDamageMultiplication) will be used instead as a ratio to derive the damage multiplication*/
    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Rocket|Explosion")
    UCurveFloat* LifetimeBasedDamageMultiplierCurve = nullptr;
private:
    FVector PreviousRocketLocation = FVector::ZeroVector;
    FRotator PreviousRocketRotation = FRotator::ZeroRotator;
    FVector2D RotationAcceleration = FVector2D::ZeroVector;
    bool bTriggeredExplosion = false;
};