RPG59.玩家拾取物品三:可拾取物品的提示UI

1。以WarriorWidgetBase作为父类，创建一个子类的userwidget

2.布局为

两个值都为120

3。然后我们需要想办法，在合适的位置，用bool来控制此控件的显示与隐藏。

情况为：当玩家触发与可拾取物体的重叠时，我们将广播一个bool值用来显示可拾取提示

打开PlayerUiComponent.h

//控制显示拾取物品的提示
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStoneInteractedDelegate, bool, bShouldDisplayInputKey);

//控制显示物体
	UPROPERTY(BlueprintCallable,BlueprintAssignable)
	FOnStoneInteractedDelegate OnStoneInteracted;

我们还需要获取player的uicomponent，打开WarriorPlayerGameplayAbility.h

//获取玩家UI组件
	UFUNCTION(BlueprintPure, Category = "XMB|Ability")
	UPlayerUIComponent* GetPlayerUIComponentFromActorInfo();

UPlayerUIComponent* UWarriorPlayerGameplayAbility::GetPlayerUIComponentFromActorInfo()
{
	return GetPlayerCharacterFromActorInfo()->GetPlayerUIComponent();
}

然后打开PlayerGA_PickUpStones,处理广播事件，这样子我们就将bool广播出去了

void UPlayerGA_PickUpStones::ActivateAbility(const FGameplayAbilitySpecHandle Handle,const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo,const FGameplayEventData* TriggerEventData)
{
	//显示可拾取提示
	GetPlayerUIComponentFromActorInfo()->OnStoneInteracted.Broadcast(true);
	
	Super::ActivateAbility(Handle, ActorInfo, ActivationInfo, TriggerEventData);
}

void UPlayerGA_PickUpStones::EndAbility(const FGameplayAbilitySpecHandle Handle,const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo,bool bReplicateEndAbility, bool bWasCancelled)
{
	GetPlayerUIComponentFromActorInfo()->OnStoneInteracted.Broadcast(false);
	
	Super::EndAbility(Handle, ActorInfo, ActivationInfo, bReplicateEndAbility, bWasCancelled);
}

4。接下来处理监听

启动项目,打开Overlay

我们需要获取当前用来拾取物品的键位