UE4-動畫/蒙太奇/融合(Animation/montage/blend)相關筆記

Q.定義狀態機動畫藍圖事件：

 

 

 

Q.Animation/Montage指定幀觸發事件（Event）:

（注意：單幀動畫需要取消勾選Teleport to Explicit Time，否則無法觸發幀事件）

 

Q.C++自定義 Animation Blueprint（動畫藍圖）

 

自己很少用C++寫Skeleton動畫相關的邏輯，通常Anim的BP滿足大部分需求，最多繼承一個UAnimInstance封裝一個通用基類，很少去自定義anim節點

 

故留個C++實現備查.

 

Note:AnimGraph屬於Edtior模塊，如果需要打包,需要注意下build.cs：

 

https://github.com/Hethger/UE4_AnimGraphNode_Project_Template 

 

build.cs主要片段:

        if (Target.Type == TargetType.Editor)
        {
            PublicDependencyModuleNames.AddRange(
                new string[] 
                {
                    "UnrealED",
                    "BlueprintGraph",
                    "AnimGraph"
                });
        }

 

AnimInstance 栗子：

.h

UCLASS(transient, Blueprintable , hideCategories = AnimInstance, BlueprintType )
class BJ_3DDESIGNAPP_API UCppAnimation_Demonstrate : public UAnimInstance
{
    GENERATED_BODY()
public:
    //初始化虛函數
    virtual void NativeInitializeAnimation() override;
    //tick event 
    virtual void NativeUpdateAnimation(float DeltaTimeX) override;
protected:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "CppVariant")
        float Speed = 0.0f;
};

 .cpp

void UCppAnimation_Demonstrate::NativeInitializeAnimation()
{
    Super::NativeInitializeAnimation();
}

void UCppAnimation_Demonstrate::NativeUpdateAnimation(float DeltaTimeX)
{
    Super::NativeUpdateAnimation(DeltaTimeX);
　　//你的邏輯

}

 

Q.C++自定義 Animation Graph Node （動畫節點）

　　需要C++自定義動畫節點的話，需要分別實現UAnimGraphNode_Base，和FAnimNode_Base的子類；

　　UAnimGraphNode_Base用於在Editor里的定義一些節點的屬性（如顏色/Category 名稱/節點名等）

　　FAnimNode_Base 里實現我們自己的動畫邏輯

　栗子（PS:例子是沒有實現任何功能的）：

 

AnimNode：

 

.h

 

 

#pragma once

#include "CoreMinimal.h"
#include "Animation/AnimNodeBase.h"
#include "CppAnimNode_Demonstrate.generated.h"

USTRUCT(BlueprintType)
struct BJ_3DDESIGNAPP_API FCppAnimNode_Demonstrate : public FAnimNode_Base
{
    GENERATED_USTRUCT_BODY()

public:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Links)
        FPoseLink BasePose;
public:
    virtual void Initialize_AnyThread(const FAnimationInitializeContext& Context) override;
    virtual void CacheBones_AnyThread(const FAnimationCacheBonesContext& Context) override;
    virtual void Update_AnyThread(const FAnimationUpdateContext& Context) override;
    virtual void Evaluate_AnyThread(FPoseContext& Output) override;
    virtual void GatherDebugData(FNodeDebugData& DebugData) override;

// Constructor 
public:
    FCppAnimNode_Demonstrate();
};

 

.cpp

#include "CppAnimNode_Demonstrate.h"

FCppAnimNode_Demonstrate::FCppAnimNode_Demonstrate()
{
}

void FCppAnimNode_Demonstrate::Initialize_AnyThread(const FAnimationInitializeContext & Context)
{
    BasePose.Initialize(Context);
}

void FCppAnimNode_Demonstrate::CacheBones_AnyThread(const FAnimationCacheBonesContext & Context)
{
    BasePose.CacheBones(Context);
}

void FCppAnimNode_Demonstrate::Update_AnyThread(const FAnimationUpdateContext & Context)
{
    EvaluateGraphExposedInputs.Execute(Context);
    BasePose.Update(Context);
}

void FCppAnimNode_Demonstrate::Evaluate_AnyThread(FPoseContext & Output)
{
    BasePose.Evaluate(Output);
}

void FCppAnimNode_Demonstrate::GatherDebugData(FNodeDebugData & DebugData)
{
    FString DebugLine = DebugData.GetNodeName(this);

    DebugData.AddDebugItem(DebugLine);

    BasePose.GatherDebugData(DebugData);
}

 

AnimGraphNode：

.h

#pragma once

#include "CoreMinimal.h"
#include "AnimGraphNode_Base.h"
#include "CppAnimNode_Demonstrate.h"
#include "CppAnimGraphNode_Demonstrate.generated.h"

UCLASS()
class BJ_3DDESIGNAPP_API UCppAnimGraphNode_Demonstrate : public UAnimGraphNode_Base { GENERATED_UCLASS_BODY() private: //注意，自定義的Anim Node類，邏輯都在里面 UPROPERTY(EditAnywhere, Category = "Settings") FCppAnimNode_Demonstrate Node; public: //節點顏色 virtual FLinearColor GetNodeTitleColor() const override; //提示內容 virtual FText GetTooltipText() const override; //節點名稱 virtual FText GetNodeTitle(ENodeTitleType::Type TitleType) const override; //Category 分類名稱 virtual FString GetNodeCategory() const override; };

.cpp

#include "CppAnimGraphNode_Demonstrate.h"

#define LOCTEXT_NAMESPACE "LQ"

UCppAnimGraphNode_Demonstrate::UCppAnimGraphNode_Demonstrate(const FObjectInitializer& ObjectInitializer) :Super(ObjectInitializer) { } FLinearColor UCppAnimGraphNode_Demonstrate::GetNodeTitleColor() const { return FLinearColor::Green; } FText UCppAnimGraphNode_Demonstrate::GetTooltipText() const { return LOCTEXT("hello_ue4_animation ", "hello_ue4_animation "); } FText UCppAnimGraphNode_Demonstrate::GetNodeTitle(ENodeTitleType::Type TitleType) const { return LOCTEXT("HandleCharacterHeight", "HandleCharacterHeight"); } FString UCppAnimGraphNode_Demonstrate::GetNodeCategory() const { return TEXT("CppCustomNode"); } #undef LOCTEXT_NAMESPACE

 

 

Q.C++ 自定義State machine（狀態機）

　　wait