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

#pragma once

#include "CoreMinimal.h"
#include "UObject/NoExportTypes.h"
#include "CommonTypes.h"
#include "Tangible.h"
#include "TangibleManager.generated.h"

UCLASS()
class INTEGRATION_API UlxTangibleManager : public UObject
{
	GENERATED_BODY()

public:
	// Types used frequently.
	using IdView = CommonTypes::IdView;
	using IdArray = CommonTypes::IdArray;
	using TanArray = TArray<UlxTangible*>;

	// A pointer to our world.
	UPROPERTY()
	TWeakObjectPtr<UWorld> World;

	// A pointer to uclass TangibleActor.  This is the class
	// of actors that we create (for now).
	UPROPERTY()
	TSubclassOf<AActor> ClassTangibleActor;

	// Given a tangible ID, look up the TangibleComponent of that actor.
	UPROPERTY()
	TMap<int64, UlxTangible*> IdToTangible;

public:
	UlxTangibleManager();

	// Initialize the tangible manager.
	//
	void Init(UWorld *world, UClass* tanact);

	// Get a pointer to our world.
	// 
	UWorld* GetWorld() const override { return World.Get(); }

	// Get the tangible if it exists, otherwise return NULL
	//
	UlxTangible* GetTangible(int64 id) const;

	// Get the tangible if it exists, otherwise create it.
	//
	UlxTangible* MakeTangible(int64 id);

	// Delete the tangible.
	//
	void DeleteTangible(int64 id);

	// Get an array of all tangibles.
	//
    TanArray GetAllTangibles() const;
	
	// Update the 'NearAccordingToLuprex' flags.
	//
	// Also creates any tangibles that are in the near-list,
	// if they don't already exist.
	//
	void UpdateNear(IdView near);

	// Given an array of tangibles, return an array of tangible Ids.
	//
	static IdArray GetIds(const TanArray &tans);
};