Ue4 Charater 游戏世界血条-优快云博客

本文链接：https://blog.youkuaiyun.com/Main_hc/article/details/121086454

(1)FairyGUI 创建血条控件

(2) //角色血条
UGComponent* m_pCharHp; .h文件声明变量

(3)

UWorld* kWorld = GetWorld();
	m_pCharHp = UUIPackage::CreateObject(TEXT("FightGame"), TEXT("charHp"), (UObject*)kWorld)->As<UGComponent>();
	if (m_pCharHp != nullptr)
	{
		m_pCharHp->SetParentToRoot();
		m_pCharHp->MakeFullScreen(true);	

		UGObject* CharHpWin = m_pCharHp->GetChild("CharHp");
		
		float modelWidth = GetCapsuleComponent()->GetUnscaledCapsuleRadius()/50.0f * 160.0f;
		CharHpWin->SetWidth(modelWidth);

	}

（4）设置位置

	UWorld* kWorld = GetWorld();
	FConstPlayerControllerIterator playerIterator = kWorld->GetPlayerControllerIterator();
	FVector2D sreenPos;
	tempCurrentPos.Z = tempCurrentPos.Z + 150.0f;
	UGameplayStatics::ProjectWorldToScreen(playerIterator->Get(), tempCurrentPos, sreenPos);
	FVector2D resPos = m_pCharHp->GetUIRoot()->GlobalToLocal(sreenPos);
	m_pCharHp->SetPosition(sreenPos);

本文在Tick中调用

注意：位置设置一次时，在BeginPlay中调用ProjectWorldToScreen会失败，要延迟调用才对

效果移动地图血条相对角色的位置会变，没有Unity正交相机血条的效果

(5)将UGameplayStatics::ProjectWorldToScreen 换成 UWidgetLayoutLibrary::ProjectWorldLocationToWidgetPosition(playerIterator->Get(), tempCurrentPos, sreenPos,false);血条的效果就对了