From 22e615d7cf51bc9ab8455c01c97d7ac8eb683345 Mon Sep 17 00:00:00 2001
From: PHILIP WHITE <PW259246@falmouth.ac.uk>
Date: Thu, 28 Sep 2023 21:29:04 +0100
Subject: [PATCH] Add AI Task for Getting the Player Location or an Area Around
 Them

---
 .../AI/BTTask_FindPlayerLocation.cpp          | 39 +++++++++++++++++++
 .../AI/BTTask_FindPlayerLocation.h            | 27 +++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.cpp
 create mode 100644 EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.h

diff --git a/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.cpp b/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.cpp
new file mode 100644
index 00000000..7607af23
--- /dev/null
+++ b/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.cpp
@@ -0,0 +1,39 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "BTTask_FindPlayerLocation.h"
+
+#include "NavigationSystem.h"
+#include "BehaviorTree/BlackboardComponent.h"
+#include "GameFramework/Character.h"
+
+UBTTask_FindPlayerLocation::UBTTask_FindPlayerLocation(FObjectInitializer const& ObjectInitializer)
+{
+	NodeName = TEXT("Find Player Location");
+}
+
+EBTNodeResult::Type UBTTask_FindPlayerLocation::ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory)
+{
+	if (const ACharacter* const Player = Cast<ACharacter>(GetWorld()->GetFirstPlayerController()->GetPawn()))
+	{
+		if (UBlackboardComponent* const Blackboard = OwnerComp.GetBlackboardComponent())
+		{
+			if (SearchRandom)
+			{
+				FVector const Origin = Player->GetActorLocation();
+				const UNavigationSystemV1* const NavSystem = UNavigationSystemV1::GetCurrent(GetWorld());
+				if (FNavLocation RandomLocation; NavSystem->GetRandomPointInNavigableRadius(Origin, SearchRadius, RandomLocation))
+				{
+					Blackboard->SetValueAsVector(GetSelectedBlackboardKey(), RandomLocation.Location);
+				}
+			}
+			else
+			{
+				Blackboard->SetValueAsVector(GetSelectedBlackboardKey(), Player->GetActorLocation());
+			}
+			FinishLatentTask(OwnerComp, EBTNodeResult::Succeeded);
+			return EBTNodeResult::Succeeded;
+		}
+	}
+	return EBTNodeResult::Failed;
+}
diff --git a/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.h b/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.h
new file mode 100644
index 00000000..6161bd90
--- /dev/null
+++ b/EndlessVendetta/Source/EndlessVendetta/AI/BTTask_FindPlayerLocation.h
@@ -0,0 +1,27 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "BehaviorTree/Tasks/BTTask_BlackboardBase.h"
+#include "BTTask_FindPlayerLocation.generated.h"
+
+/**
+ * 
+ */
+UCLASS()
+class ENDLESSVENDETTA_API UBTTask_FindPlayerLocation : public UBTTask_BlackboardBase
+{
+	GENERATED_BODY()
+
+public:
+	explicit UBTTask_FindPlayerLocation(FObjectInitializer const& ObjectInitializer);
+	virtual EBTNodeResult::Type ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory) override;
+
+private:
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "AI", meta = (AllowPrivateAccess = "true"))
+	float SearchRadius = 150.f;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "AI", meta = (AllowPrivateAccess = "true"))
+	bool SearchRandom = false;
+};