玩家所操作的角色，提供键位绑定

由PlayerController控制，可在多个Pawn之间进行切换

APawn

构成

APawn::SetupPlayerInputComponent

配置用户输入: 在该函数内绑定键位

APawn::StaticClass

静态成员 返回指向UClass的指针 在GENERATED_BODY宏中定义

UObject也有StaticClass，UObjectBaseUtility没有

控制器

访问Controller对象

APawn::GetController

获取指向AController的指针

可以是PlayerController，也可以是AIController, 自行转换

APawn::Controller

public

使用指向AController的指针

APawn::GetController<T>

获取指定类型控制器

Copy1// Returns controller for this actor cast to the template type. May return NULL is the cast fails
2template < class T >
3T* GetController() const
4{
5    return Cast<T>(GetController());
6}

控制状态

APawn::IsControlled

是否被PlayerController接管

APawn::IsPawnControlled

是否被Controller接管: AIController或PlayerController

受控于AI控制器

APawn::AIControllerClass

设置AIController类型

Copy1// Default class to use when pawn is controlled by AI
2UPROPERTY(EditAnywhere, BlueprintReadWrite, meta=(DisplayName="AI Controller Class"), Category=Pawn)
3TSubclassOf<AController> AIControllerClass;       

APawn::AutoPossessAI

设置Pawn被创建和被AI控制器接管的条件

Copy1// *
2// * Determines when the Pawn creates and is possessed by an AI Controller (on level start, when spawned, etc).
3// * Only possible if AIControllerClassRef is set, and ignored if AutoPossessPlayer is enabled.
4// * @see AutoPossessPlayer
5// *
6UPROPERTY(EditAnywhere, Category=Pawn)
7EAutoPossessAI AutoPossessAI;

APawn::Reset

对基类函数进行了覆写

Copy1virtual void Reset() override;

发生以下任意情形, 调用Destroy销毁Pawn

1. 上级控制器不存在
   
2. 控制器拥有PlayerState
   

AIController默认无PlayerState

Copy 1void APawn::Reset()
 2{
 3    if ( (Controller == nullptr) || (Controller->PlayerState != nullptr) )
 4    {
 5        DetachFromControllerPendingDestroy();
 6        Destroy();
 7    }
 8    else
 9    {
10        Super::Reset();
11    }
12}

APawn::TurnOff

使Pawn静止

Copy1/** Freeze pawn - stop sounds, animations, physics, weapon firing */
2virtual void TurnOff();

• 第一部分和网络编程有关
  
• 关闭碰撞
  
• 去使能运动组件
  
• 关闭物理仿真
  

Copy 1void APawn::TurnOff()
 2{
 3    if (GetLocalRole() == ROLE_Authority)
 4    {
 5        SetReplicates(true);
 6    }
 7
 8    // do not block anything, just ignore
 9    SetActorEnableCollision(false);
10
11    UPawnMovementComponent* MovementComponent = GetMovementComponent();
12    if (MovementComponent)
13    {
14        MovementComponent->StopMovementImmediately();
15        MovementComponent->SetComponentTickEnabled(false);
16    }
17
18    DisableComponentsSimulatePhysics();
19}

APawn::DisableInput

关闭输入

覆写AActor::DisableInput

Copy1virtual void DisableInput(APlayerController* PlayerController) override;

只要传入的控制器指针为空就可以达到效果

Copy 1void APawn::DisableInput(class APlayerController* PlayerController)
 2{
 3    if (PlayerController == Controller || PlayerController == nullptr)
 4    {
 5        bInputEnabled = false;
 6    }
 7    else
 8    {
 9        UE_LOG(LogPawn, Error, TEXT("DisableInput can only be specified on a Pawn for its Controller"));
10    }
11}