Actor的动画状态可能有几种idle，run，walk，skill，而skill中由又有几种不同的技能动作，要做进步一控制，这里只是提供一种思路，利用动画蓝图里的 conduit 节点，减少大量重复性的 state（比如某一状态到n种技能状态的切换）。

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先来看看总体的动画蓝图(Animation Blueprint)

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1、先写个继承自 UAnimInstance 的基类 UMyAnimInstance

UMyAnimInstance.h

#include "../CharTypes.h"
#include "../Skill/SkillTypes.h"
#include "MyAnimInstance.generated.h"class AMyChar;
class USkillTemplate;
class UMyAnimInstance;DECLARE_DELEGATE_OneParam(FStateNotify, CharState); UCLASS()
class UMyAnimInstance : public UAnimInstance
{GENERATED_BODY()public:UMyAnimInstance();virtual ~UMyAnimInstance();UFUNCTION(BlueprintCallable, Category = "UMyAnimInstance")AMyChar* GetOwnerChar();virtual void NativeUpdateAnimation(float DeltaSeconds) override;
public:UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "UMyAnimInstance")AMyChar*    mOwnerChar;UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "UMyAnimInstance")float       mSpeed;UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "UMyAnimInstance")CharState   mCharState; //控制角色动画的枚举UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "UMyAnimInstance")EAnimType   mAnimType; //各种技能动画的枚举，在技能状态下细分各种技能FStateNotify    mStateDlg;
};

UMyAnimInstance.cpp

UMyAnimInstance::UMyAnimInstance()
{mOwnerChar = nullptr;mSpeed = 0.f;mCharState = CharState::IdleRun;mAnimType = EAnimType::None;mStateDlg.BindLambda([&](CharState _state)->void {mCharState = _state;});
}UMyAnimInstance::~UMyAnimInstance()
{}AMyChar* UMyAnimInstance::GetOwnerChar()
{if (!mOwnerChar){APawn* owner = TryGetPawnOwner();mOwnerChar = owner ? Cast<AMyChar>(owner) : nullptr;}return mOwnerChar;
}void UMyAnimInstance::NativeUpdateAnimation(float DeltaSeconds)
{Super::NativeUpdateAnimation(DeltaSeconds);if (mOwnerChar == nullptr){mOwnerChar = GetOwnerChar();}if (mOwnerChar != nullptr){   //TODO: 待优化，不变时不需要去getmSpeed = mOwnerChar->GetVelocity().Size(); //设置速度USkillFunction* skillFunc = mOwnerChar->GetUsingSkill(); //正在使用的技能USkillTemplate* skillTemp = skillFunc != nullptr ? skillFunc->GetSkillTemplate() : nullptr;mAnimType = skillTemp != nullptr ? skillTemp->mAnimType : EAnimType::None; //设置动画类型}
}

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2、创建个 蓝图对象 继承自 UMyAnimInstance

选择父类 MyAnimInstance，(u是命名规则被省去了)，选择 fbx 动画

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3、动画蓝图的各种状态描述，只要是使用conduit这个节点

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4、然后就可以通过这两个变量来控制动画

        CharState   mCharState;EAnimType   mAnimType;

具体看上面的代码，在这个函数里

void UMyAnimInstance::NativeUpdateAnimation(float DeltaSeconds)