说明

Behavior Tree Cleanup

NPC死亡后清除行为树

验证NPC死亡后, 行为树仍在运行

添加调试信息

• 每次运行寻找敌人服务时, 输出日志
  
  ShootThemUp: AI/Services/STUFindEnemyService.cpp
  

  Copy1// TickNode
  2UE_LOG(LogTemp, Display, TEXT("find enemy"));

• 游戏角色死亡后输入日志
  
  ShootThemUp: Components/STUHealthComponent.cpp
  

  Copy1// OnTakeAnyDamage
  2UE_LOG(LogTemp, Display, TEXT("character dead"));

设置NPC生命值

BP_STUAICharacter > Health Component > Details > Max Health

设置为5

查看

NPC死亡后, 行为树仍在运行: 直到Character的Destroy函数被调用

AIController::RunBehaviorTree

1. UBehaviorTreeComponent派生自BrainComponent
   
2. 调用UBrainComponent::StartTree实现
   

UBrainComponent::Cleanup

停止行为树运行

在AICharacter中覆写OnDeath

修改基类声明

• 使之为虚函数
  
• 移动到protected
  
  派生类可以覆写基类私有函数, 但无法调用基类实现
  

ShootThemUp: Player/STUBaseCharacter.h

Copy1virtual void OnDeath();

在派生类覆写

protected

ShootThemUp: AI/STUAICharacter.h

Copy1virtual void OnDeath() override;

ShootThemUp: AI/STUAICharacter.cpp

Copy 1#include "BrainComponent.h"
 2
 3void ASTUAICharacter::OnDeath()
 4{
 5    Super::OnDeath();
 6
 7    const auto STUController = Cast<AAIController>(Controller);
 8    if (STUController && STUController->BrainComponent)
 9    {
10        STUController->BrainComponent->Cleanup();
11    }
12}

查看

• 设置步枪伤害
  
  BP_STURifleWeapon > Details > Damage Amount , 设置为10
  

移除日志打印

ShootThemUp: AI/Services/STUFindEnemyService.cpp

ShootThemUp: Components/STUHealthComponent.cpp

ShootThemUp: Weapon/STUBaseWeapon.cpp

Copy1// GetTraceData

ShootThemUp: Weapon/STULauncherWeapon.cpp

Copy1// MakeShot