1 .Create project

项目设置

image-20250701171016760

image-20250701171047721

image-20250701172653793

2.类

AuraCharacter.cpp
TObjectptr：UE5新增的指针，相比原先的UObject* 实现GC,序列化
c++ 类
AuraCharacterBase 锁有Character的基类，创建了一个Wepon的骨骼网格组件，同时声明了Weapon 挂接点

AuraCharacter Class 主角类
AuraEnemy class 敌人类的父类，继承与AuraCharacter

蓝图

BP_Aura_Character
ABP_Aura_Character

ABP_Enemy 敌人动画蓝图模板基类，不需要指定骨骼。不同敌人复用里面的动画播放速度计算逻辑
ABP_Goblin_SlingShot 设置指定敌人持有SlingShot的动画
ABP_Goblin_Spear 设置敌人持有Spear的动画

3.增强输入

https://dev.epicgames.com/documentation/zh-cn/unreal-engine/configure-character-movement-with-cplusplus-in-unreal-engine?application_version=5.6

1.Aura.Build.cs 中添加EnhancedInput模块

2.创建IA 和IMC

​ 1. input Action IA_Move :设置输入的值类型，是float bool vector2,3 ?

​ 2. input map context :IMC_ 设置IA_Move 中的按键，AWSD，和对应的按键的modifiy

Swizzle input Axis Values:

1.AuraPlayerController class

EnhanceInput system ： 增强输入系统，用来管理IA 和IMC

获取EnhanceInput system 将创建号IMC 添加到Enhance Input系统中

输入函数:
SetupInputComponent()
为了实现输入和WSAD后，游戏有相应，需要一个IA_Move触发后的响应函数 Move
通过增强输入组件，来控制IA_Move 和Move 响应函数的绑定

EnhancedInputComponent->BindAction(MoveAction,ETriggerEvent::Triggered,this,&AAuraPlayerController::Move);

响应函数:

Move()
将输入的IA_Move 输入，转为角色移动的位置

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## 3.绑定IA_Move 到Move 响应函数

```c++
void AAuraPlayerController::SetupInputComponent()
{
	Super::SetupInputComponent();

	// 1.获取EnhanceInput system 
	UEnhancedInputLocalPlayerSubsystem* Subsystem = ULocalPlayer::GetSubsystem<UEnhancedInputLocalPlayerSubsystem>(GetLocalPlayer());
	// 2.获取IA_Move
	UInputMappingContext* IA_Move = LoadObject<UInputMappingContext>(nullptr,TEXT("InputMappingContext'/Game/Input/IMC_Move.IMC_Move'"));
	// 3.将IA_Move 添加到EnhanceInput system 中
	if (Subsystem && IA_Move)
	{
		Subsystem->AddMappingContext(IA_Move,0);
	}
	// 4.绑定IA_Move 到Move 响应函数
	UEnhancedInputComponent* EnhancedInputComponent = Cast<UEnhancedInputComponent>(InputComponent);
	if (EnhancedInputComponent && MoveAction)
	{
		EnhancedInputComponent->BindAction(MoveAction,ETriggerEvent::Triggered,this,&AAuraPlayerController::Move);
	}
}
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void AAuraPlayerController::Move(const FInputActionValue& InputActionValue)
{
	const FVector2D InputAxisVector = InputActionValue.Get<FVector2D>();//获取MoveAction 输入xY 两个方向的值
	
	const FRotator Rotation = GetControlRotation();//控制器的选装矩阵
	const FRotator YawRotation(0.f,Rotation.Yaw,0.f);// 将控制器，俯仰角pitch，旋转角Roll,保存为0，保留偏航角Yaw。 

	const FVector ForwardDirection = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::X);// 根据偏航角,获取相机当前热forward 方向
	const FVector  RightDirection = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::Y); // right 方向

	if (APawn* ControlledPawn = GetPawn<APawn>())
	{
		ControlledPawn->AddMovementInput(ForwardDirection,InputAxisVector.Y); 
		ControlledPawn->AddMovementInput(RightDirection,InputAxisVector.X);
	}
}

Game Mode

GameModeBase Class C++ AuraGameModeBase 蓝图:BP_Aura_GameMode 设置 默认Pawn 和controller

WordSetting 中设置 GameMode

BP_AuraCharacter 中设置弹簧臂相机

AuraCharacter Class 中设置角色的朝向为移动方向

ABP_Aura 动画状态机，状态切换，根据速度判断是idle 还是run

Enemy Interfacce

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graph LR
    A[AuraPlayerController] -->|Hover Over| B[BP_Goblin_Spear]
    A -->|Hover Over| C[BP_Goblin_Slingshot]
    B --> D[Actor]
    C --> D
    D --> E[IEenemyInterface]
    E --> F[Highlight]
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classDiagram
    %% Character的基类
    class AAuraCharacterBase {
        +Weapon
        +AAuraCharacterBase() 创建了一个Wepon的骨骼网格组件，同时声明了Weapon 挂接点
    }
    AAuraCharacterBase <|-- AAuraCharacter
    AAuraCharacterBase <|-- AAuraEnemy
    AAuraEnemy <|-- BP_Enemy
    class AAuraCharacter {
        -AAuraCharacter()
    }
    AAuraCharacter <|-- BP_AuraCharacter
    class AAuraEnemy {
        +bool is_wild
        +HighlightActor()
        +UnHighlightActor()
    }
    class EnemyInterface {
        <<interface>> EnemyInterface
        +HighlightActor()
        +UnHighlightActor()
    }
    EnemyInterface <|-- AAuraEnemy
    class AAuraPlayerController {
        +AAuraPlayerController()
        -PlayerTick()
        -BeginPlay() 初始化增强输入
        -SetupInputComponent() 设置输入
        #CursorTrace()
        #Move() 控制角色移动
        #MoveAction
        #AuraContext
        #LastActor
        #ThisActor
    }
    class BP_Enemy