Save system

Source/Lost_Edge/Private/CommonFunctions.cpp

@@ -4,8 +4,11 @@
 
 #include "GameFramework/Actor.h"
 #include "InputCoreTypes.h"
+#include "Kismet/GameplayStatics.h"
 #include "UObject/Object.h"
 
+#include "Levels/LevelBase.h"
+#include "PlayerBase.h"
 
 bool UCommonFunctions::IsNonGameObject(UObject* object)
 {
@@ -34,3 +37,20 @@ void UCommonFunctions::DestroyActorRecursively(AActor* actor)
         child->Destroy();
     actor->Destroy();
 }
+
+ALevelBase* UCommonFunctions::GetCurrentLevelScript(UObject* obj)
+{
+    if(auto world = obj->GetWorld())
+        if(auto level = world->GetCurrentLevel())
+            if(auto script = level->GetLevelScriptActor())
+                return Cast<ALevelBase>(script);
+    return nullptr;
+}
+
+APlayerBase* UCommonFunctions::GetPlayer(UObject* obj)
+{
+    if(auto pc = UGameplayStatics::GetPlayerController(obj->GetWorld(), 0))
+        if(auto pawn = pc->GetPawn())
+            return Cast<APlayerBase>(pawn);
+    return nullptr;
+}

Source/Lost_Edge/Private/CommonFunctions.h

@@ -17,4 +17,10 @@ public:
 
     UFUNCTION(BlueprintCallable, Category = Actor)
     static void DestroyActorRecursively(class AActor* actor);
+
+    UFUNCTION(BlueprintCallable, Category = Level)
+    static class ALevelBase* GetCurrentLevelScript(class UObject* obj);
+
+    UFUNCTION(BlueprintCallable, Category = Player)
+    static class APlayerBase* GetPlayer(class UObject* obj);
 };

Source/Lost_Edge/Private/CustomGameInstanceBase.cpp

@@ -8,14 +8,22 @@
 #include "InputMappingContext.h"
 #include "Kismet/GameplayStatics.h"
 
+#include "CommonFunctions.h"
 #include "CustomGameUserSettings.h"
 #include "Interactable/Activators/InCameraInteractableActivator.h"
 #include "Interactable/Activators/RaycastInteractableActivator.h"
 #include "Interactable/Modificators/ActivateInteractableModificator.h"
 #include "Interactable/Modificators/SawInteractableModificator.h"
+#include "Levels/LevelBase.h"
+#include "PlayerBase.h"
+#include "SaveData.h"
+
+UCustomGameInstanceBase* UCustomGameInstanceBase::instance = nullptr;
 
 void UCustomGameInstanceBase::Init()
 {
+    instance = this;
+
     UGameInstance::Init();
 
     // IN FUTURE ASSIGN FROM CONTENT LOADER MEMBER
@@ -31,6 +39,13 @@ void UCustomGameInstanceBase::Init()
     }
 
     ApplyMouseSettings();
+
+    saveData = Cast<USaveData>(UGameplayStatics::CreateSaveGameObject(USaveData::StaticClass()));
+}
+
+UCustomGameInstanceBase* UCustomGameInstanceBase::GetGameInstance()
+{
+    return instance;
 }
 
 void UCustomGameInstanceBase::ApplyMouseSettings()
@@ -83,3 +98,32 @@ void UCustomGameInstanceBase::AppendInteractableModificatorClass(TSubclassOf<cla
         }
     }
 }
+
+void UCustomGameInstanceBase::SaveGame(FName checkpointName)
+{
+    auto levelScript = UCommonFunctions::GetCurrentLevelScript(this);
+    if(!levelScript)
+        return;
+
+    auto player = UCommonFunctions::GetPlayer(this);
+    if(!player)
+        return;
+    saveData->level = GetWorld()->GetFName();
+    saveData->state = levelScript->GetState();
+    saveData->checkpoint = checkpointName;
+    if(player->leftPocketItem)
+        saveData->playerLeftPocketItem = player->leftPocketItem->GetFName();
+    if(player->rightPocketItem)
+        saveData->playerRightPocketItem = player->rightPocketItem->GetFName();
+
+    UGameplayStatics::SaveGameToSlot(saveData, TEXT("Save"), 0);
+}
+
+void UCustomGameInstanceBase::LoadGame()
+{
+    saveData = Cast<USaveData>(UGameplayStatics::LoadGameFromSlot(TEXT("Save"), 0));
+    if(!saveData)
+        return;
+
+    UGameplayStatics::OpenLevel(this, saveData->level);
+}

Source/Lost_Edge/Private/CustomGameInstanceBase.h

@@ -2,7 +2,6 @@
 
 #pragma once
 
-#include "CoreMinimal.h"
 #include "Engine/GameInstance.h"
 
 #include "CustomGameInstanceBase.generated.h"
@@ -17,11 +16,21 @@ class UCustomGameInstanceBase : public UGameInstance
 public:
     virtual void Init() override;
 
+    UFUNCTION(BlueprintPure)
+    static UCustomGameInstanceBase* GetGameInstance();
+
     UFUNCTION(BlueprintCallable, Category = Settings)
     void ApplyMouseSettings();
 
     void AppendInteractableModificatorClass(TSubclassOf<class UInteractableModificator> modificator);
 
+    UFUNCTION(BlueprintCallable, Category = Save)
+    void SaveGame(FName checkpointName);
+    UFUNCTION(BlueprintCallable, Category = Save)
+    void LoadGame();
+
+    static UCustomGameInstanceBase* instance;
+
     FLevelBeginnedDelegate OnLevelBeginned;
 
     UPROPERTY(EditDefaultsOnly)
@@ -31,4 +40,6 @@ public:
     UPROPERTY(EditDefaultsOnly)
     TSet<TSoftObjectPtr<class UInputMappingContext>> inputContexts;
 
+    UPROPERTY(VisibleAnywhere)
+    class USaveData* saveData = nullptr;
 };

Source/Lost_Edge/Private/Levels/Checkpoint.cpp

@@ -0,0 +1,12 @@
+// Oleg Petruny proprietary.
+
+
+#include "Checkpoint.h"
+
+#include "CustomGameInstanceBase.h"
+
+void ACheckpoint::SaveGame()
+{
+    if(auto GI = Cast<UCustomGameInstanceBase>(GetWorld()->GetGameInstance()))
+        GI->SaveGame(GetFName());
+}

Source/Lost_Edge/Private/Levels/Checkpoint.h

@@ -0,0 +1,18 @@
+// Oleg Petruny proprietary.
+
+#pragma once
+
+#include "GameFramework/Actor.h"
+
+#include "Checkpoint.generated.h"
+
+UCLASS(Blueprintable, BlueprintType, MinimalAPI)
+class ACheckpoint : public AActor
+{
+    GENERATED_BODY()
+
+public:
+    UFUNCTION(BlueprintCallable)
+    void SaveGame();
+};
+

Source/Lost_Edge/Private/Levels/LevelBase.cpp

@@ -3,19 +3,39 @@
 
 #include "LevelBase.h"
 
+#include "EngineUtils.h"
 #include "LevelSequencePlayer.h"
 
+#include "CommonFunctions.h"
 #include "CustomGameInstanceBase.h"
+#include "Interactable/Interactable.h"
+#include "Levels/Checkpoint.h"
+#include "PlayerBase.h"
+#include "SaveData.h"
 
 void ALevelBase::BeginPlay()
 {
     ALevelScriptActor::BeginPlay();
 
-    //=== broadcast new level begin play
+    BroadcastNewLevelBeginPlay();
+    StartLevelAnimations();
+    ApplySaveData();
+}
+
+void ALevelBase::IterateToState(int32 to)
+{
+    while(state < to)
+        CallNextState();
+}
+
+void ALevelBase::BroadcastNewLevelBeginPlay()
+{
     if(auto GI = Cast<UCustomGameInstanceBase>(GetWorld()->GetGameInstance()))
         GI->OnLevelBeginned.Broadcast(GetFName());
+}
 
-    //=== start level animations
+void ALevelBase::StartLevelAnimations()
+{
     FMovieSceneSequencePlaybackSettings playbackSettings;
     playbackSettings.bAutoPlay = true;
     FMovieSceneSequenceLoopCount playbackLoopCount;
@@ -27,6 +47,46 @@ void ALevelBase::BeginPlay()
         auto sequencePlayer = ULevelSequencePlayer::CreateLevelSequencePlayer(GetWorld(), sequence.LoadSynchronous(), playbackSettings, sequenceActor);
         onBeginPlaySequencesActors.Add(sequenceActor);
     }
-
-
+}
+
+void ALevelBase::ApplySaveData()
+{
+    auto GI = UCustomGameInstanceBase::GetGameInstance();
+    if(!GI || !GI->saveData || GI->saveData->level != GetWorld()->GetFName())
+        return;
+
+    IterateToState(GI->saveData->state);
+
+    auto player = UCommonFunctions::GetPlayer(this);
+    if(!player)
+        return;
+
+    for(TActorIterator<ACheckpoint> it(GetWorld()); it; ++it)
+    {
+        if(it->GetFName() == GI->saveData->checkpoint)
+        {
+            player->SetActorLocation(it->GetActorLocation(), false, nullptr, ETeleportType::ResetPhysics);
+            player->Controller->SetControlRotation(it->GetActorRotation());
+            break;
+        }
+    }
+
+    int pocketItems = 0;
+    for(TActorIterator<AInteractable> it(GetWorld()); it; ++it)
+    {
+        if(it->GetFName() == GI->saveData->playerLeftPocketItem)
+        {
+            ++pocketItems;
+            player->TakeItemToLeftHand(*it);
+        }
+        else if(it->GetFName() == GI->saveData->playerRightPocketItem)
+        {
+            ++pocketItems;
+            player->TakeItemToRightHand(*it);
+        }
+        if(pocketItems > 1)
+        {
+            break;
+        }
+    }
 }

Source/Lost_Edge/Private/Levels/LevelBase.h

@@ -15,12 +15,21 @@ public:
     UFUNCTION(BlueprintCallable)
     inline void CallNextState() { ++state; NextState(); }
 
+    inline int32 GetState() { return state; };
+
 protected:
     virtual void BeginPlay() override;
 
     UFUNCTION(BlueprintImplementableEvent)
     void NextState();
 
+    UFUNCTION(BlueprintCallable)
+    void IterateToState(int32 to);
+
+    void BroadcastNewLevelBeginPlay();
+    void StartLevelAnimations();
+    void ApplySaveData();
+
     UPROPERTY(EditDefaultsOnly)
     TArray<TSoftObjectPtr<class ULevelSequence>> onBeginPlaySequences;
     TArray<class ALevelSequenceActor*> onBeginPlaySequencesActors;

Source/Lost_Edge/Private/SaveData.h

@@ -0,0 +1,29 @@
+// Oleg Petruny proprietary.
+
+#pragma once
+
+#include "GameFramework/SaveGame.h"
+
+#include "SaveData.generated.h"
+
+UCLASS(BlueprintType)
+class USaveData : public USaveGame
+{
+    GENERATED_BODY()
+
+public:
+    UPROPERTY(VisibleAnywhere)
+    FName level;
+
+    UPROPERTY(VisibleAnywhere)
+    int32 state;
+
+    UPROPERTY(VisibleAnywhere)
+    FName checkpoint;
+
+    UPROPERTY(VisibleAnywhere)
+    FName playerLeftPocketItem;
+
+    UPROPERTY(VisibleAnywhere)
+    FName playerRightPocketItem;
+};

Source/Lost_Edge/Private/SaveManager.cpp

@@ -1,6 +0,0 @@
-// Oleg Petruny proprietary.
-
-
-#include "SaveManager.h"
-
-

Source/Lost_Edge/Private/SaveManager.h

@@ -1,19 +0,0 @@
-// Oleg Petruny proprietary.
-
-#pragma once
-
-#include "UObject/Object.h"
-
-#include "SaveManager.generated.h"
-
-UCLASS(BlueprintType)
-class USaveManager : public UObject
-{
-    GENERATED_BODY()
-
-public:
-
-
-private:
-
-};