ue4-玩家控制器APlayerController

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通过 APlayerController 可以让输入设备控制游戏，可以直接在蓝图中设置，不过我比较喜欢折腾c++(逻辑代码都是用c++写)

1、创建一个 AMyPlayerCtrler 继承自 APlayerController，重写一些方法

AMyPlayerCtrler.h

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#include "MyPlayerCtrler.generated.h"

class UMyInput;
class UMyCameraComp;
class AMySpectator;
class AMyChar;

UCLASS()
class AMyPlayerCtrler : public APlayerController
{
	GENERATED_BODY()

public:
	AMyPlayerCtrler();
	virtual ~AMyPlayerCtrler();

protected:
	/** True if the controlled character should navigate to the mouse cursor. */
	uint32 bMoveToMouseCursor : 1;

	// Begin PlayerController interface
	virtual void PlayerTick(float DeltaTime) override;
	virtual void SetupInputComponent() override;
	virtual void ProcessPlayerInput(const float DeltaTime, const bool bGamePaused) override;
	// End PlayerController interface

	void OnLeftMousePressed();
	void OnRightMousePressed();

	void OnReadAtk();
	
private:
	TArray<AMyChar*>	mSelectedVec;
	bool				mIsReadyAtk;

AMyPlayerCtrler.cpp

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void AMyPlayerCtrler::SetupInputComponent()
{
	// set up gameplay key bindings
	Super::SetupInputComponent();

	//LeftMouse 和 RightMouse 就是等下要在Editor中绑定按键用的，
	InputComponent->BindAction("LeftMouse", IE_Pressed, this, &AMyPlayerCtrler::OnLeftMousePressed);
	InputComponent->BindAction("RightMouse", IE_Pressed, this, &AMyPlayerCtrler::OnRightMousePressed);

	//按A键，准备攻击
	InputComponent->BindAction("ReadyAtk", IE_Pressed, this, &AMyPlayerCtrler::OnReadAtk);
}

//一下几个方法只是部分代码
void AMyPlayerCtrler::OnLeftMousePressed()
{
	FVector2D pressPos;
	this->GetMousePosition(pressPos.X, pressPos.Y);
	UE_LOG(GameLogger, Warning, TEXT("--- AMyPlayerCtrler::OnLeftMousePressed, pos:%s"), *pressPos.ToString());

	bool isAtk = false;
	FVector WorldPosition(0.f);
	AActor* const HitActor = GetClickTarget(pressPos, WorldPosition);
	AMyChar* tarChar = Cast<AMyChar>(HitActor);
	if (mSelectedVec.Num() > 0)
	{
		if (mIsReadyAtk)
		{
			//如果有人就锁定目标， 没人就移动

			if (tarChar != nullptr)
			{
				AtkTarget(tarChar);
			}
			else
			{
				MoveDestination(WorldPosition);
			}

			isAtk = true;
			mIsReadyAtk = false;
		}
	}

	if (!isAtk)
	{
		TArray<AMyChar*> dstCharVec;
		if (tarChar != nullptr)
		{
			dstCharVec.Add(tarChar);
		}
		SetSelected(dstCharVec);
	}


}

void AMyPlayerCtrler::OnRightMousePressed()
{
	FVector2D pressPos;
	this->GetMousePosition(pressPos.X, pressPos.Y);
	UE_LOG(GameLogger, Warning, TEXT("--- AMyPlayerCtrler::OnLeftMousePressed, pos:%s"), *pressPos.ToString());

	FHitResult HitResult;
	this->GetHitResultAtScreenPosition(pressPos, CurrentClickTraceChannel, true, HitResult);
	if (HitResult.bBlockingHit)
	{
		MoveDestination(HitResult.ImpactPoint);
	}
}

void AMyPlayerCtrler::OnReadAtk()
{
	mIsReadyAtk = true;
}

2、Editor 中绑定按键事件 LeftMouse 和 RightMouse

这里写图片描述

这里写图片描述

3、这里是真相

LeftMouse 是选中对象，RightMouse是选中对象奔跑到目的点（gif录制实在太大，只能截图了）
这里写图片描述

这里写图片描述

这里写图片描述

应要求贴部分代码

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void AMyPlayerCtrler::MoveDestination(const FVector& DestLocation)
{
	for (AMyChar* selChar : mSelectedVec)
	{
		selChar->MoveToDst(nullptr, DestLocation, false);
	}
}
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// class AMyChar : public ACharacter, public IBehavInterface, public IMyInputInterface //继承了输入操作的方法

void IMyInputInterface::MoveToDst(AMyChar* _target, const FVector& _loc, bool _isShift /* = false */)
{
	if (mOwnChar->GetCharacterMovement()->Velocity.Size() > 0.f)
	{
		mOwnChar->GetController()->StopMovement();
	}

	UNavigationSystem* const NavSys = mOwnChar->GetWorld()->GetNavigationSystem();
	if (NavSys != nullptr)
	{
		NavSys->SimpleMoveToLocation(mOwnChar->GetController(), _loc);
	}
}