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Source/first/Variant_Shooter/Weapons/ShooterPickup.h

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+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "GameFramework/Actor.h"
+#include "Engine/DataTable.h"
+#include "Engine/StaticMesh.h"
+#include "ShooterPickup.generated.h"
+
+class USphereComponent;
+class UPrimitiveComponent;
+class AShooterWeapon;
+
+/**
+ *  Holds information about a type of weapon pickup
+ */
+USTRUCT(BlueprintType)
+struct FWeaponTableRow : public FTableRowBase
+{
+	GENERATED_BODY()
+
+	/** Mesh to display on the pickup */
+	UPROPERTY(EditAnywhere)
+	TSoftObjectPtr<UStaticMesh> StaticMesh;
+
+	/** Weapon class to grant on pickup */
+	UPROPERTY(EditAnywhere)
+	TSubclassOf<AShooterWeapon> WeaponToSpawn;
+};
+
+/**
+ *  Simple shooter game weapon pickup
+ */
+UCLASS(abstract)
+class FIRST_API AShooterPickup : public AActor
+{
+	GENERATED_BODY()
+
+	/** Collision sphere */
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="Components", meta = (AllowPrivateAccess = "true"))
+	USphereComponent* SphereCollision;
+
+	/** Weapon pickup mesh. Its mesh asset is set from the weapon data table */
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="Components", meta = (AllowPrivateAccess = "true"))
+	UStaticMeshComponent* Mesh;
+	
+protected:
+
+	/** Data on the type of picked weapon and visuals of this pickup */
+	UPROPERTY(EditAnywhere, Category="Pickup")
+	FDataTableRowHandle WeaponType;
+
+	/** Type to weapon to grant on pickup. Set from the weapon data table. */
+	TSubclassOf<AShooterWeapon> WeaponClass;
+	
+	/** Time to wait before respawning this pickup */
+	UPROPERTY(EditAnywhere, Category="Pickup", meta = (ClampMin = 0, ClampMax = 120, Units = "s"))
+	float RespawnTime = 4.0f;
+
+	/** Timer to respawn the pickup */
+	FTimerHandle RespawnTimer;
+
+public:	
+	
+	/** Constructor */
+	AShooterPickup();
+
+protected:
+
+	/** Native construction script */
+	virtual void OnConstruction(const FTransform& Transform) override;
+
+	/** Gameplay Initialization*/
+	virtual void BeginPlay() override;
+
+	/** Gameplay cleanup */
+	virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
+
+	/** Handles collision overlap */
+	UFUNCTION()
+	virtual void OnOverlap(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);
+
+protected:
+
+	/** Called when it's time to respawn this pickup */
+	void RespawnPickup();
+
+	/** Passes control to Blueprint to animate the pickup respawn. Should end by calling FinishRespawn */
+	UFUNCTION(BlueprintImplementableEvent, Category="Pickup", meta = (DisplayName = "OnRespawn"))
+	void BP_OnRespawn();
+
+	/** Enables this pickup after respawning */
+	UFUNCTION(BlueprintCallable, Category="Pickup")
+	void FinishRespawn();
+};