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Unreal UObject implementing strategy pattern function.
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| #include "SystemsContainerLite.h" | |
| void UESLSystemsContainer::Execute(UObject* Context, UESLProcess *InCommand) | |
| { | |
| InCommand->Error = NAME_None; | |
| for (TObjectPtr<UESLSystem> ExecutionStep : Systems) | |
| { | |
| if (InCommand->Error != NAME_None) | |
| { | |
| return; | |
| } | |
| ExecutionStep->Execute(Context, InCommand); | |
| } | |
| } | |
| void UESLSystem_Blueprint::Execute(UObject *Context, UESLProcess *InCommand) | |
| { | |
| OnExecute(Context, InCommand); | |
| } |
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| #pragma once | |
| #include "CoreMinimal.h" | |
| #include "SystemsContainerLite.generated.h" | |
| UCLASS(Blueprintable, abstract, ClassGroup=(EntitySystemLite), meta=(DisplayName="Process")) | |
| class UESLProcess : public UObject | |
| { | |
| GENERATED_BODY() | |
| public: | |
| UPROPERTY(BlueprintReadWrite) | |
| FName Error; | |
| }; | |
| UCLASS(EditInlineNew, abstract, ClassGroup=(EntitySystemLite), meta=(DisplayName="System")) | |
| class UESLSystem : public UObject | |
| { | |
| GENERATED_BODY() | |
| public: | |
| virtual void Execute(UObject* Context, UESLProcess* InCommand) {}; | |
| }; | |
| UCLASS(Blueprintable, ClassGroup=(EntitySystemLite), meta=(DisplayName="Blueprintable System")) | |
| class UESLSystem_Blueprint : public UESLSystem | |
| { | |
| GENERATED_BODY() | |
| public: | |
| UFUNCTION(BlueprintImplementableEvent) | |
| void OnExecute(UObject* Context, UESLProcess* InCommand); | |
| virtual void Execute(UObject* Context, UESLProcess* InCommand) override; | |
| }; | |
| UCLASS(Blueprintable, EditInlineNew, ClassGroup=(EntitySystemLite), meta=(DisplayName="Systems Container")) | |
| class UESLSystemsContainer : public UObject | |
| { | |
| GENERATED_BODY() | |
| public: | |
| UPROPERTY(EditDefaultsOnly, Instanced, Category=EntitySystemLite) | |
| TArray<TObjectPtr<UESLSystem>> Systems; | |
| public: | |
| UFUNCTION(BlueprintCallable) | |
| virtual void Execute(UObject* Context, UESLProcess* InCommand); | |
| }; |
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