blaster/Source/Blaster/Components/CombatComponent.h

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Blaster/HUD/BlasterHUD.h"
#include "Blaster/Types/CombatState.h"
#include "Blaster/Weapon/WeaponTypes.h"
#include "Components/ActorComponent.h"
#include "Blaster/Weapon/Projectile.h"
#include "CombatComponent.generated.h"

UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class BLASTER_API UCombatComponent : public UActorComponent
{
	GENERATED_BODY()

public:	
	UCombatComponent();
	friend class ABlasterCharacter;
	
	virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
	virtual void GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const override;
	
	void EquipWeapon(class AWeapon* WeaponToEquip);
	void Reload();
	UFUNCTION(BlueprintCallable)
	void FinishedReloading();

	void FireButtonPressed(bool bPressed);

	UFUNCTION(BlueprintCallable)
	void ShotgunShellReload();

	void JumpToShotgunEnd();

	UFUNCTION(BlueprintCallable)
	void ThrowGrenadeFinished();

	UFUNCTION(BlueprintCallable)
	void LaunchGrenade();

	UFUNCTION(Server, Reliable)
	void ServerLaunchGrenade(const FVector_NetQuantize& Target);

	FORCEINLINE int32 GetGrenades() const { return Grenades; }

	void PickupAmmo(EWeaponType WeaponType, int32 AmmoAmount);
	
protected:
	virtual void BeginPlay() override;
	void SetAiming(bool bIsAiming);

	UFUNCTION(Server, Reliable)
	void ServerSetAiming(bool bIsAiming);

	UFUNCTION()
	void OnRep_EquippedWeapon();
	void Fire();

	UFUNCTION(Server, Reliable)
	void ServerFire(const FVector_NetQuantize& TraceHitTarget);

	UFUNCTION(NetMulticast, Reliable)
	void MulticastFire(const FVector_NetQuantize& TraceHitTarget);

	void TraceUnderCrosshairs(FHitResult& TraceHitResult);

	void SetHUDCrosshairs(float DeltaTime);

	UFUNCTION(Server, Reliable)
	void ServerReload();

	void HandleReload();
	int32 AmountToReload();

	void ThrowGrenade();

	UFUNCTION(Server, Reliable)
	void ServerThrowGrenade();

	UPROPERTY(EditAnywhere)
	TSubclassOf<class AProjectile> GrenadeClass;

	void DropEquippedWeapon();
	void AttachActorToRightHand(AActor* ActorToAttach);
	void AttachActorToLeftHand(AActor* ActorToAttach);
	void UpdateCarriedAmmo();
	void PlayEquipWeaponSound();
	void ReloadEmptyWeapon();
	void ShowAttachedGrenade(bool bShowGrenade);
private:
	UPROPERTY()
	class ABlasterCharacter* Character;
	UPROPERTY()
	class ABlasterPlayerController* Controller;
	UPROPERTY()
	class ABlasterHUD* HUD;
	
	UPROPERTY(ReplicatedUsing=OnRep_EquippedWeapon)
	class AWeapon* EquippedWeapon;

	UPROPERTY(Replicated)
	bool bAiming;

	UPROPERTY(EditAnywhere)
	float BaseWalkSpeed;
	
	UPROPERTY(EditAnywhere)
	float AimWalkSpeed;

	bool bFireButtonPressed;

	//HUD and Crosshairs
	float CrosshairVelocityFactor;
	float CrosshairInAirFactor;
	float CrosshairAimFactor;
	float CrosshairShootingFactor;
	FHUDPackage HUDPackage;
	
	// Aiming and FOV

	// Field of view when not aiming; set to the camera's base FOV in BeginPlay
	float DefaultFOV;

	UPROPERTY(EditAnywhere, Category = Combat)
	float ZoomedFOV = 30.f;

	float CurrentFOV;
	
	UPROPERTY(EditAnywhere, Category = Combat)
	float ZoomInterpSpeed = 20.f;

	void InterpFOV(float DeltaTime);
	
	FVector HitTarget;

	// Automatic fire
	FTimerHandle FireTimer;
	bool bCanFire = true;
	
	void StartFireTimer();
	void FireTimerFinished();

	bool CanFire();

	// Carried ammo for the currently equipped weapon
	UPROPERTY(ReplicatedUsing=OnRep_CarriedAmmo)
	int32 CarriedAmmo;

	UFUNCTION()
	void OnRep_CarriedAmmo();
	
	TMap<EWeaponType, int32> CarriedAmmoMap;

	UPROPERTY(EditAnywhere)
	int32 MaxCarriedAmmo = 500;

	UPROPERTY(EditAnywhere)
	int32 StartingARAmmo = 30;
	
	UPROPERTY(EditAnywhere)
	int32 StartingRocketAmmo = 8;
	
	UPROPERTY(EditAnywhere)
	int32 StartingPistolAmmo = 15;
	
	UPROPERTY(EditAnywhere)
	int32 StartingSMGAmmo = 100;
	
	UPROPERTY(EditAnywhere)
	int32 StartingShotgunAmmo = 15;
	
	UPROPERTY(EditAnywhere)
	int32 StartingSniperAmmo = 15;
	
	UPROPERTY(EditAnywhere)
	int32 StartingGrenadeLauncherAmmo = 15;
	
	void InitializeCarriedAmmo();

	UPROPERTY(ReplicatedUsing=OnRep_CombatState)
	ECombatState CombatState = ECombatState::ECS_Unoccupied;

	UFUNCTION()
	void OnRep_CombatState();

	void UpdateAmmoValues();
	void UpdateShotgunAmmoValues();

	UPROPERTY(ReplicatedUsing = OnRep_Grenades)
	int32 Grenades = 4;

	UFUNCTION()
	void OnRep_Grenades();

	UPROPERTY(EditAnywhere)
	int32 MaxGrenades = 4;

	void UpdateHUDGrenades();
};