I touchs: Unreal: Casting types in C++

2016年11月19日星期六

Unreal: Casting types in C++

since: 2016/11/19
update: 2016/11/19
reference:
1. Casting types in Unreal Engine | Orfeas Eleftheriou
2. I touchs: Unreal: Adding a C++ Class
3. I touchs: Unreal: Exposing C++ variables to Blueprints
4. I touchs: Unreal: Exposing C++ functions to Blueprints
5. I touchs: Unreal: Add Override C++ Event Functions in Blueprints
6. I touchs: Unreal: Create C++ Blueprint Function Library

A. 新增 C++ 類別
1. 可以接續 I touchs: Unreal: Create C++ Blueprint Function Library 的專案

2. Add New > New C++ Class...

3. 選擇 "Actor" 作為 Parent Class > Next

4. 幫新增的 Class 命名: CActor > Create Class

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B. 新增指標宣告與 Casting 處理
    1. 修改: CActor.h
....
    //@add ######
    UPROPERTY(EditAnywhere)
    AActor* SM;
....

    2. 修改: CActor.cpp
....
    //@add ######
    AStaticMeshActor* StaticMesh = Cast<AStaticMeshActor>(SM);

    if (StaticMesh)
    {
        GLog->Log("The actor you chose is a static mesh actor!");
    }
....

3. 存檔並編譯

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C. 新增繼承自 CActor 的 Blueprint 類別:
1. Add New > Blueprint Class