DialogueBrowserUtilities.h

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// Copyright Csaba Molnar, Daniel Butum. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
 
#include "DialogueBrowserTreeNode.h"
#include "DialogueTreeProperties/DialogueBrowserTreeParticipantProperties.h"
 
enum class EDialogueBrowserSortOption : uint8
{
    Name = 0,
    DialogueReferences
};
 
struct FDialogueBrowserSortOption
{
 
public:
    FDialogueBrowserSortOption(EDialogueBrowserSortOption InOption, FName InName)
        : Option(InOption), Name(InName) {}
 
    FName GetFName() const { return Name; }
    FText GetFText() const { return FText::FromName(Name); }
    FString GetFString() const { return Name.ToString(); }
 
    bool IsByName() const { return Option == EDialogueBrowserSortOption::Name; }
 
public:
    EDialogueBrowserSortOption Option;
 
    // The name of the option.
    FName Name;
 
    // TODO add ascending descending
};
 
class FDialogueBrowserUtilities
{
public:
    // Compare two FDialogueBrowserTreeNode
    static bool PredicateCompareDialogueTreeNode(
        const TSharedPtr<FDialogueBrowserTreeNode>& FirstNode,
        const TSharedPtr<FDialogueBrowserTreeNode> SecondNode
    )
    {
        check(FirstNode.IsValid());
        check(SecondNode.IsValid());
        return *FirstNode == *SecondNode;
    }
 
    // Predicate that sorts participants by dialogue number references, in descending order.
    static bool PredicateSortByDialoguesNumDescending(
        FName FirstParticipant,
        FName SecondParticipant,
        const TMap<FName, TSharedPtr<FDialogueBrowserTreeParticipantProperties>>& ParticipantsProperties
    )
    {
        int32 FirstNum = 0;
        int32 SecondNum = 0;
 
        const TSharedPtr<FDialogueBrowserTreeParticipantProperties>* FirstPtr =
            ParticipantsProperties.Find(FirstParticipant);
        if (FirstPtr)
        {
            FirstNum = (*FirstPtr)->GetDialogues().Num();
        }
        const TSharedPtr<FDialogueBrowserTreeParticipantProperties>* SecondPtr =
            ParticipantsProperties.Find(SecondParticipant);
        if (SecondPtr)
        {
            SecondNum = (*SecondPtr)->GetDialogues().Num();
        }
 
        return FirstNum > SecondNum;
    }
};