c4.1Subsystem|实践
大约 1 分钟
Subsystem|实践
1. 继承对应的子系统
- 引擎 -> 继承 UEngineSubsystem
- 编辑器 -> 继承 UEditorSubsystem
- 游戏实例 -> 继承 UGameInstanceSubsystem
- 世界 -> 继承 UWorldSubsystem
- 本地玩家 -> 继承 ULocalPlayerSubsystem
2.添加函数
ExorcistGameInstanceSubsystem.h
#pragma once
#include "CoreMinimal.h"
#include "Subsystems/GameInstanceSubsystem.h"
#include "MyGameInstanceSubsystem.generated.h"
UCLASS()
class EXORCIST_API UMyGameInstanceSubsystem : public UGameInstanceSubsystem
{
GENERATED_BODY()
public:
//是否创建这个子系统
virtual bool ShouldCreateSubsystem(UObject* Outer) const override;
//初始化
virtual void Initialize(FSubsystemCollectionBase& Collection) override;
//销毁
virtual void Deinitialize() override;
public:
UPROPERTY(BlueprintReadWrite)
int32 HP;
};
ExorcistGameInstanceSubsystem.cpp
#include "UMyGameInstanceSubsystem.h"
bool UMyGameInstanceSubsystem::ShouldCreateSubsystem(UObject* Outer) const
{
return Super::ShouldCreateSubsystem(Outer);
}
void UMyGameInstanceSubsystem::Initialize(FSubsystemCollectionBase& Collection)
{
Super::Initialize(Collection);
}
void UMyGameInstanceSubsystem::Deinitialize()
{
Super::Deinitialize();
}
3. 其他类中使用
//UMyEngineSubsystem获取
UMyEngineSubsystem* MySubsystem = GEngine->GetEngineSubsystem<UMyEngineSubsystem>();
//UMyEditorSubsystem的获取
UMyEditorSubsystem* MySubsystem = GEditor->GetEditorSubsystem<UMyEditorSubsystem>();
//UMyGameInstanceSubsystem的获取
UGameInstance* GameInstance = UGameplayStatics::GetGameInstance(...);
UMyGameInstanceSubsystem* MySubsystem = GameInstance->GetSubsystem<UMyGameInstanceSubsystem>();
//UMyWorldSubsystem的获取
UWorld* World=MyActor->GetWorld(); //world用各种方式也都可以
UMyWorldSubsystem* MySubsystem=World->GetSubsystem<UMyWorldSubsystem>();
//UMyLocalPlayerSubsystem的获取
ULocalPlayer* LocalPlayer = Cast<ULocalPlayer>(PlayerController->Player)
UMyLocalPlayerSubsystem * MySubsystem = LocalPlayer->GetSubsystem<UMyLocalPlayerSubsystem>();
4.蓝图中使用
5.网络复制
