// Fill out your copyright notice in the Description page of Project Settings.


#include "AdventurePlayerController.h"
#include "AdventureMap.h"
#include "HexTile.h"
#include "AdventureCameraPawn.h"
#include "AdventureCharacter.h"
#include "MapObject.h"


AAdventurePlayerController::AAdventurePlayerController() 
{
	PrimaryActorTick.bCanEverTick = true;
	PrimaryActorTick.bStartWithTickEnabled = true;
    AutoReceiveInput = EAutoReceiveInput::Player0;
}
void AAdventurePlayerController::BeginPlay()
{
    Super::BeginPlay();
    World = GetWorld();
    HoveredHex = CurrentHex;
}
// Called every frame
void AAdventurePlayerController::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime);

    if (bInPlacementMode) { FitOnGrid(PlaceObj); }
}

void AAdventurePlayerController::SetupInputComponent()
{
    // Always call this.
    Super::SetupInputComponent();

    // This is initialized on startup, you can go straight to binding
    InputComponent->BindAction("LeftClick", IE_Pressed, this, &AAdventurePlayerController::LeftClick);
    InputComponent->BindAction("DebugAlt", IE_Pressed, this, &AAdventurePlayerController::TogglePlacing); // Change binding eventually
}

void AAdventurePlayerController::LeftClick()
{
    if (!IsValid(HoveredHex)) { return; }
    if (bInPlacementMode) { PlaceObject(PlaceObjClass, HoveredHex); }
}

TArray<AHexTile*> AAdventurePlayerController::Vision()
{
    TArray<AHexTile*> Results;
    TSet<AHexTile*> Visible = MapRef->BreadthFirstSearch(CurrentHex, 4);
    for (auto& Hex : Visible) {
        if (ExploredHexes.Contains(Hex)) { continue; }
        Results.Add(Hex);
        ExploredHexes.Add(Hex);
    }
    return Results;
}

void AAdventurePlayerController::TogglePlacing()
{
    bInPlacementMode = !bInPlacementMode;
    if (bInPlacementMode) {
        PlaceObj = World->SpawnActor<AMapObject>(PlaceObjClass, FTransform());
    }
    else { if (IsValid(PlaceObj)) { PlaceObj->Destroy(); } }
}

void AAdventurePlayerController::FitOnGrid(AMapObject* MapObject)
{
    if (!IsValid(HoveredHex)) { return; }
    if (HoveredHex->bFree) {
        MapObject->SetActorLocation(FVector(HoveredHex->GetActorLocation()));
    }
}

// called from BP; generally takes the Hex under the player cursor as argument
void AAdventurePlayerController::PlaceObject(TSubclassOf<AMapObject> MapObjClass, AHexTile* OnHex)
{
	// spawn this Actor at World location of Origin Hex;
    AMapObject* SpawnedObj = World->SpawnActor<AMapObject>(MapObjClass, FTransform(OnHex->GetActorTransform().GetLocation()));
    SpawnedObj->Origin = OnHex;

	// set Hexes to bOccupied according to BlockVectors;
    OnHex->bFree = false; // exact Hexes are eventually to be determined by MapObjectClass's BlockingVectors

    MapRef->MapObjects.Add(OnHex, SpawnedObj); // maybe this as well
    MapRef->IncID++;
    SpawnedObj->ID = MapRef->IncID;
    MapRef->MapObjectsByID.Add(MapRef->IncID, SpawnedObj);
}