Updated Quest System for Functionality

Source/the_twilight_abyss/BaseItems/InventoryComponent.h

@@ -45,5 +45,4 @@ public:
 
 	UFUNCTION()
 	void RemoveItem(UEatableItems* Item);
-	
 };

Source/the_twilight_abyss/Quest/Quest.cpp

@@ -3,18 +3,45 @@
 
 #include "Quest.h"
 
-bool UQuest::CheckConditions(FJsonObject WorldState)
+#include "the_twilight_abyss/BaseItems/InventoryComponent.h"
+
+bool UQuest::CheckConditions(UWorldState* WorldState) const
 {
-	if (Conditions.Values.IsEmpty()) return true;
+	if (IsValid(Goals)) return true;
+	if (WorldStateMatch(WorldState, Goals)) return true;
 	return false;
 }
 
-bool UQuest::CheckPreConditions(FJsonObject WorldState)
+bool UQuest::CheckPreConditions(UWorldState* WorldState) const
 {
-	if (PreConditions.Values.IsEmpty()) return true;
+	if (IsValid(PreConditions)) return true;
+	if (WorldStateMatch(WorldState, PreConditions)) return true;
 	return false;
 }
 
-void UQuest::ApplyRewards()
+void UQuest::ApplyRewards(UInventoryComponent* Inventory)
 {
+	for (UBaseItem* Item : Rewards)
+	{
+		Inventory->AddItem(Item);
+	}
+}
+
+bool UQuest::WorldStateMatch(UWorldState* A, UWorldState* B)
+{
+	for (UBaseItem* Item : B->Items)
+	{
+		if (!A->Items.Contains(Item) && Item->StackCount > A->Items[A->Items.Find(Item)]->StackCount)
+		{
+			return false;
+		}
+	}
+	for (TTuple<FString, bool> Flag : B->QuestFlags)
+	{
+		if (!A->QuestFlags.Contains(Flag.Key) || A->QuestFlags[Flag.Key] != Flag.Value)
+		{
+			return false;
+		}
+	}
+	return true;
 }

Source/the_twilight_abyss/Quest/Quest.h

@@ -3,29 +3,37 @@
 #pragma once
 
 #include "CoreMinimal.h"
-#include "UObject/NoExportTypes.h"
-#include "../PlayerTemp/TempCharacter.h"
+#include "UWorldState.h"
 #include "Quest.generated.h"
 
-/**
- *
- */
-UCLASS()
+UENUM(BlueprintType)
+enum class EQuestLine : uint8
+{
+	Main UMETA(DisplayName="Main"),
+	Sub UMETA(DisplayName="Sub")
+};
+
+UCLASS(Abstract, BlueprintType, Blueprintable, EditInlineNew, DefaultToInstanced)
 class THE_TWILIGHT_ABYSS_API UQuest : public UObject
 {
 	GENERATED_BODY()
+
 public:
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
 	FText Title;
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
 	FText Description;
-	FString QuestLine;
-	UQuest* ParentQuest;
-	FJsonObject Conditions;
-	FJsonObject PreConditions;
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
+	EQuestLine QuestLine;
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite, NoClear, Instanced)
+	UWorldState* Goals;
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite, Instanced)
+	UWorldState* PreConditions;
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite, NoClear, Instanced)
+	TArray<UBaseItem*> Rewards;
 
-	//TODO: Rewards
-
-	bool CheckConditions(FJsonObject WorldState);
-	bool CheckPreConditions(FJsonObject WorldState);
-	void ApplyRewards();
-	//TODO: CreateQuest
+	bool CheckConditions(UWorldState* WorldState) const;
+	bool CheckPreConditions(UWorldState* WorldState) const;
+	void ApplyRewards(UInventoryComponent* Inventory);
+	static bool WorldStateMatch(UWorldState* A, UWorldState* B);
 };

Source/the_twilight_abyss/Quest/QuestSystem.cpp

@@ -20,8 +20,8 @@ UQuestSystem::UQuestSystem()
 void UQuestSystem::BeginPlay()
 {
 	Super::BeginPlay();
-
-	
+	PlayerInventory = GetOwner()->FindComponentByClass<UInventoryComponent>();
+	PlayerInventory->OnInventoryUpdated.AddDynamic(this, &UQuestSystem::CheckActiveQuestConditions);
 }
 
 
@@ -29,7 +29,6 @@ void UQuestSystem::BeginPlay()
 void UQuestSystem::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
 {
 	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
-
 }
 
 void UQuestSystem::CheckActiveQuestConditions()
@@ -38,15 +37,28 @@ void UQuestSystem::CheckActiveQuestConditions()
 	{
 		if (Quest->CheckConditions(GetWorldState()))
 		{
+			GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, TEXT("Quest Completed!"));
 			CompletedQuests.Add(Quest);
-			Quest->ApplyRewards();
+			Quest->ApplyRewards(PlayerInventory);
 		}
 	}
 }
 
-FJsonObject UQuestSystem::GetWorldState()
+UWorldState* UQuestSystem::GetWorldState() const
 {
-	FJsonObject WorldState = FJsonObject();
+	UWorldState* WorldState = NewObject<UWorldState>();
+	WorldState->Items = PlayerInventory->Items;
+	WorldState->QuestFlags = QuestFlags;
 	return WorldState;
 }
 
+void UQuestSystem::AddQuest(UQuest* Quest)
+{
+	ActiveQuests.Add(Quest);
+}
+
+void UQuestSystem::AddQuestFlag(const FString FlagName, const bool FlagValue)
+{
+	QuestFlags.Add(FlagName, FlagValue);
+	CheckActiveQuestConditions();
+}

Source/the_twilight_abyss/Quest/QuestSystem.h

@@ -7,6 +7,8 @@
 #include "Components/TextBlock.h"
 #include "Blueprint/UserWidget.h"
 #include "Quest.h"
+#include "UWorldState.h"
+#include "../BaseItems/InventoryComponent.h"
 #include "QuestSystem.generated.h"
 
 UCLASS(ClassGroup=(Custom), meta=(BlueprintSpawnableComponent))
@@ -18,9 +20,11 @@ public:
 	// Sets default values for this component's properties
 	UQuestSystem();
 
+	UPROPERTY(EditAnywhere, BlueprintReadOnly)
 	TArray<UQuest*> ActiveQuests;
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly)
 	TArray<UQuest*> CompletedQuests;
-	TArray<FString> CompletedQuestLines;
+	UPROPERTY(EditAnywhere)
 	TMap<FString, bool> QuestFlags;
 
 protected:
@@ -36,5 +40,13 @@ public:
 	// Called every frame
 	virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
 	void CheckActiveQuestConditions();
-	FJsonObject GetWorldState();
+	UWorldState* GetWorldState() const;
+
+	UFUNCTION(BlueprintCallable)
+	void AddQuest(UQuest* Quest);
+	UFUNCTION(BlueprintCallable)
+	void AddQuestFlag(FString FlagName, bool FlagValue);
+
+private:
+	UInventoryComponent* PlayerInventory;
 };