【UE】UEC++ DataTable数据表

#pragma once #include "CoreMinimal.h" #include "Engine/DataTable.h" #include "DataStruct.generated.h" USTRUCT(BlueprintType) struct FDataStruct : public FTableRowBase { GENERATED_BODY() UPROPERTY(EditAnywhere) FString Name; UPROPERTY(EditAnywhere) float HP; UPROPERTY(EditAnywhere) float EXP; UPROPERTY(EditAnywhere) float Damage; };

二、DataTableComponent

声明一个组件，就可以在需要的类上挂载组件，进行对DataTable的处理。

#pragma once #include "CoreMinimal.h" #include "Components/ActorComponent.h" #include "DataTableProject/Structs/DataStruct.h" #include "DataTableComponent.generated.h" UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) ) class DATATABLEPROJECT_API UDataTableComponent : public UActorComponent { GENERATED_BODY() public: UDataTableComponent(); private: UPROPERTY() UDataTable* DataTable; UPROPERTY(EditAnywhere) FString DataTablePath; public: UFUNCTION() void SetDataTablePath(FString InDataTablePath); };

#include "DataTableComponent.h" #include "DataTableProject/Structs/DataStruct.h" #include "Engine/DataTable.h" UDataTableComponent::UDataTableComponent() { PrimaryComponentTick.bCanEverTick = false; } void UDataTableComponent::SetDataTablePath(FString InDataTablePath) { this->DataTablePath = InDataTablePath; }

DataTableComponent上有一个DataTablePath的属性，这里存储了DataTable的路径，在不同情况下设置不同的路径，就可以对不同的DataTable进行操作。

三、加载

1、LoadObject()

void UDataTableComponent::LoadDataTable() { DataTable = LoadObject<UDataTable>(this, *DataTablePath); }

2、ConstructorHelpers::FObjectFinder

DataTable = ConstructorHelpers::FObjectFinder<UDataTable>(*DataTablePath).Object;

3、StaticLoadObject

DataTable = Cast<UDataTable>(StaticLoadObject(UDataTable::StaticClass(), nullptr, *DataTablePath));

四、读取

1、GetAllRows

void UDataTableComponent::ReadDataByAllRows() { if(DataTable) { TArray<FDataStruct*> Datas; DataTable->GetAllRows<FDataStruct>(TEXT("DataStruct"), Datas); for(FDataStruct* Data : Datas) { UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *Data->Name, Data->HP, Data->EXP, Data->Damage) } } }

2、FindRow

void UDataTableComponent::ReadDataByFindRow() { if(DataTable) { for(FName RowName : DataTable->GetRowNames()) { const FDataStruct* DataStruct = DataTable->FindRow<FDataStruct>(RowName, TEXT("DataStruct")); UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *DataStruct->Name, DataStruct->HP, DataStruct->EXP, DataStruct->Damage) } } }

3、GetRowMap

void UDataTableComponent::ReadDataByRowMap() { if(DataTable) { for(auto it : DataTable->GetRowMap()) { const FDataStruct* DataStruct = reinterpret_cast<FDataStruct*>(it.Value); UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *DataStruct->Name, DataStruct->HP, DataStruct->EXP, DataStruct->Damage) } } }

五、移除RemoveRow(RowName)

void UDataTableComponent::OptionDataRemoveRow(FName InRowName) { if(DataTable) DataTable->RemoveRow(InRowName); }

六、置空EmptyTable()

void UDataTableComponent::OptionDataEmptyTable() { if(DataTable) DataTable->EmptyTable(); }

七、写入AddRow(RowName, DataStruct)

void UDataTableComponent::OptionDataAddRow(FDataStruct InDataStruct) { if(DataTable) DataTable->AddRow(TEXT("a"), InDataStruct); }

八、最终代码

1、GameMode

#pragma once #include "CoreMinimal.h" #include "GameFramework/GameModeBase.h" #include "DataTableGameMode.generated.h" UCLASS() class DATATABLEPROJECT_API ADataTableGameMode : public AGameModeBase { GENERATED_BODY() public: ADataTableGameMode(); };

#include "DataTableGameMode.h" #include "DataTableController.h" ADataTableGameMode::ADataTableGameMode() { PlayerControllerClass = ADataTableController::StaticClass(); }

2、PlayerController

#pragma once #include "CoreMinimal.h" #include "GameFramework/PlayerController.h" #include "DataTableController.generated.h" UCLASS() class DATATABLEPROJECT_API ADataTableController : public APlayerController { GENERATED_BODY() public: ADataTableController(); virtual void SetupInputComponent() override; private: UPROPERTY(EditAnywhere) class UDataTableComponent* DataTableComponent; public: UFUNCTION() void LoadData(); UFUNCTION() void ReadData(); UFUNCTION() void RemoveData(); UFUNCTION() void EmptyData(); UFUNCTION() void AddData(); };

#include "DataTableController.h" #include "DataTableComponent.h" #include "DataTableProject/Structs/DataStruct.h" ADataTableController::ADataTableController() { DataTableComponent = CreateDefaultSubobject<UDataTableComponent>(TEXT("DataTableComponent")); DataTableComponent->SetDataTablePath(FString("DataTable'/Game/Data/MyDataTable.MyDataTable'")); } void ADataTableController::SetupInputComponent() { Super::SetupInputComponent(); InputComponent->BindAction(TEXT("Load"), IE_Pressed,this, &ThisClass::LoadData); InputComponent->BindAction(TEXT("Read"), IE_Pressed,this, &ThisClass::ReadData); InputComponent->BindAction(TEXT("Remove"), IE_Pressed,this, &ThisClass::RemoveData); InputComponent->BindAction(TEXT("Empty"), IE_Pressed,this, &ThisClass::EmptyData); InputComponent->BindAction(TEXT("Add"), IE_Pressed,this, &ThisClass::AddData); } void ADataTableController::LoadData() { DataTableComponent->LoadDataTable(); } void ADataTableController::ReadData() { DataTableComponent->ReadDataByAllRows(); //DataTableComponent->ReadDataByFindRow(); //DataTableComponent->ReadDataByRowMap(); } void ADataTableController::RemoveData() { DataTableComponent->OptionDataRemoveRow(FName("2")); } void ADataTableController::EmptyData() { DataTableComponent->OptionDataEmptyTable(); } void ADataTableController::AddData() { FDataStruct data; data.Name = "Tom"; data.HP = 200; data.EXP = 1000; data.Damage = 300; DataTableComponent->OptionDataAddRow(data); }

3、DataTableComponent

#pragma once #include "CoreMinimal.h" #include "Components/ActorComponent.h" #include "DataTableProject/Structs/DataStruct.h" #include "DataTableComponent.generated.h" UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) ) class DATATABLEPROJECT_API UDataTableComponent : public UActorComponent { GENERATED_BODY() public: UDataTableComponent(); private: UPROPERTY() class UDataTable* DataTable; UPROPERTY(EditAnywhere) FString DataTablePath; public: UFUNCTION() void SetDataTablePath(FString InDataTablePath); UFUNCTION() void LoadDataTable(); UFUNCTION() void ReadDataByAllRows(); UFUNCTION() void ReadDataByFindRow(); UFUNCTION() void ReadDataByRowMap(); UFUNCTION() void OptionDataRemoveRow(FName InRowName); UFUNCTION() void OptionDataEmptyTable(); UFUNCTION() void OptionDataAddRow(FDataStruct InDataStruct); };

#include "DataTableComponent.h" #include "DataTableProject/Structs/DataStruct.h" #include "Engine/DataTable.h" UDataTableComponent::UDataTableComponent() { PrimaryComponentTick.bCanEverTick = false; } void UDataTableComponent::SetDataTablePath(FString InDataTablePath) { this->DataTablePath = InDataTablePath; } void UDataTableComponent::LoadDataTable() { DataTable = LoadObject<UDataTable>(this, *DataTablePath); if(DataTable) { UE_LOG(LogTemp, Log, TEXT("Load Data Table Success")) }else { UE_LOG(LogTemp, Log, TEXT("Load Data Table failed")) } } void UDataTableComponent::ReadDataByAllRows() { if(DataTable) { TArray<FDataStruct*> Datas; DataTable->GetAllRows<FDataStruct>(TEXT("DataStruct"), Datas); for(FDataStruct* Data : Datas) { UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *Data->Name, Data->HP, Data->EXP, Data->Damage) } } } void UDataTableComponent::ReadDataByFindRow() { if(DataTable) { for(FName RowName : DataTable->GetRowNames()) { const FDataStruct* DataStruct = DataTable->FindRow<FDataStruct>(RowName, TEXT("DataStruct")); UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *DataStruct->Name, DataStruct->HP, DataStruct->EXP, DataStruct->Damage) } } } void UDataTableComponent::ReadDataByRowMap() { if(DataTable) { for(auto it : DataTable->GetRowMap()) { const FDataStruct* DataStruct = reinterpret_cast<FDataStruct*>(it.Value); UE_LOG(LogTemp, Log, TEXT("%s, %f, %f, %f"), *DataStruct->Name, DataStruct->HP, DataStruct->EXP, DataStruct->Damage) } } } void UDataTableComponent::OptionDataRemoveRow(FName InRowName) { if(DataTable) DataTable->RemoveRow(InRowName); } void UDataTableComponent::OptionDataEmptyTable() { if(DataTable) DataTable->EmptyTable(); } void UDataTableComponent::OptionDataAddRow(FDataStruct InDataStruct) { if(DataTable) DataTable->AddRow(TEXT("a"), InDataStruct); }

今天的文章【UE】UEC++ DataTable数据表分享到此就结束了，感谢您的阅读。

【UE】UEC++ DataTable数据表

【UE】UEC++ DataTable数据表

一、结构体

二、DataTableComponent

三、加载

1、LoadObject()

2、ConstructorHelpers::FObjectFinder

3、StaticLoadObject

四、读取

1、GetAllRows

2、FindRow

3、GetRowMap

五、移除RemoveRow(RowName)

六、置空EmptyTable()

七、写入AddRow(RowName, DataStruct)

八、最终代码

1、GameMode

2、PlayerController

3、DataTableComponent

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