[游戏开发]UE4 C++ Character的动画（C++类）

UE4 C++ Character的动画（C++类）

Character类C++的蓝图类

再建一个继承AnimInstance的C++类

继承AnimInstance的C++类的代码：

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Animation/AnimInstance.h"
#include "MainPlayerAnimInstance.generated.h"

/**
 * 
 */
UCLASS()
class GETSTARTED_API UMainPlayerAnimInstance : public UAnimInstance
{
	GENERATED_BODY()

public :

	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Animation Properties")
		float Speed;

	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Animation Properties")
		bool bIsInAir;

	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Animation Properties")
		 class AMyinPlayer* PlayerRef;

public:

	virtual void NativeInitializeAnimation() override;

	UFUNCTION(BlueprintCallable,Category="Animation Properties")
	void UpdateAnimationProperties();


	
};

// Fill out your copyright notice in the Description page of Project Settings.


#include "Characters/Player/MainPlayerAnimInstance.h"
#include "Characters/Player/MyinPlayer.h"
#include "GameFramework/CharacterMovementComponent.h"

void UMainPlayerAnimInstance::NativeInitializeAnimation()//这个就是一开始运行就会调用的
{
	//这个是蓝图里面的“尝试获取Pawn拥有者”  因为他不知道PlayerRef是AMainPlayer类，所以要Cast 转换一下
	PlayerRef = Cast<AMyinPlayer>(TryGetPawnOwner());

	
}

void UMainPlayerAnimInstance::UpdateAnimationProperties()
{
	if (PlayerRef == nullptr) {
		PlayerRef = Cast<AMyinPlayer>(TryGetPawnOwner());
	}

	if (PlayerRef) {
		FVector SpeedFvector = PlayerRef->GetVelocity();//获取一个它的速度
		FVector PlanarSpeed = FVector(SpeedFvector.X, SpeedFvector.Y, 0.0f);
		Speed = PlanarSpeed.Size();//一个大小，长度 ，就是获取向量的长度

		bIsInAir = PlayerRef->GetMovementComponent()->IsFalling();//是否正在坠落
		
	}
}

再建一个继承这个C++的蓝图动画类：

再写状态机