ue4-C++中加载一个蓝图类（二）-C++中绑定Blueprint武器

editor中编辑好一个武器蓝图资源后，c++中create出这个武器，然后attach到一个人物身上。 
思路： 

写个c++基类，蓝图继承后编辑成武器或其他装备，然后c++用一个TSubclassOf Weapon1Class;来保存蓝图类，再根据这个这个Weapon1Class类spawn出一个实例，attach到人物身上。

http://blog.csdn.net/yangxuan0261/article/details/52097656

1、写个基类attachment

MyAttachment.h

#pragma once

#include "MyAttachment.generated.h"

UCLASS(Blueprintable)
class USMyAttachment : public USkeletalMeshComponent
{
    GENERATED_UCLASS_BODY()
public:
    USMyAttachment();

    /** Attach point on pawn */
    UPROPERTY(EditDefaultsOnly, Category = Attachment)
        FName AttachPoint; //目标绑定点，提供给蓝图编辑
};

MyAttachment.cpp

#include "MySlate.h"
#include "MyAttachment.h"

USMyAttachment::USMyAttachment(const FObjectInitializer& ObjectInitializer) : Super(ObjectInitializer)
{
}

2、new一个bp继承这个基类

3、在人物的动画蓝图中，添加一个武器绑定点

4、在人物char中用一个成员TSubclassOf来保存class

//h
UCLASS()
class AMyChar : public ACharacter
{
    GENERATED_BODY()

public:
    /** default weapon for the char */
    UFUNCTION(BlueprintCallable, Category = "MyChar")
        void SetWeapon1Class(TSubclassOf<USMyAttachment> InWeapon);

    UPROPERTY(EditAnywhere, Category = "MyChar")
        TSubclassOf<USMyAttachment> Weapon1Class;

    UPROPERTY(EditAnywhere, Category = "MyChar")
        USMyAttachment* Weapon1;//保存生成的蓝图实例
};

//cpp
void AMyChar::SetWeapon1Class(TSubclassOf<USMyAttachment> InWeapon)
{
    Weapon1Class = InWeapon;
}

5、然后在BeginPlay时设置进去这个蓝图class

6、写个测试方法，生成蓝图武器类并绑定到人物身上

void UMyBpFuncLib::TestDressWeapon(AMyChar * _myChar)
{
    if (!_myChar->Weapon1)
    {
        USMyAttachment* MyArmor = NewObject<USMyAttachment>(_myChar, *_myChar->Weapon1Class);
        MyArmor->RegisterComponent();
        MyArmor->AttachTo(_myChar->GetMesh(), MyArmor->AttachPoint);
        _myChar->Weapon1 = MyArmor;
    }
}

7、蓝图掉一下这个测试方法

8、结果：

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