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


#include "MyGestureActions.h"
#include "HandActor.h"
#include "TableIconActor.h"
#include "MyTableIconActors.h"


void AGestureAction_Ruler::InitAction_Implementation(AHandActor* Hand, const FGestureBinding& NewBinding, float NewUEUnitsPerUnit, float TableHeight)
{
    Super::InitAction_Implementation(Hand, NewBinding, NewUEUnitsPerUnit, TableHeight);
    DesiredHeight = -500;
    StartPoint = HandA->Points[8];
    StartPoint.Z = DesiredHeight;

    FActorSpawnParameters SpawnParams;
    SpawnParams.Owner = this;
    SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

    if (LineIconClass)
    {
        
        LineIcon = GetWorld()->SpawnActor<ATableIconLineActor>(LineIconClass, StartPoint, FRotator::ZeroRotator, SpawnParams);

        if (LineIcon)
        {
            LineIcon->OwningAction = this;
            LineIcon->bPersistOnActionEnd = true;
            LineIcon->LineThickness = 50;
            Icons.Add(LineIcon);
        }
    }
    RulerPoints.Add(FVector(0, 0, 0));
    RulerPoints.Add(FVector(0, 0, DesiredHeight));
}

void AGestureAction_Ruler::UpdateAction_Implementation()
{
    if (!HandA || !IsValid(LineIcon)) return;
    const FVector Current = HandA->Points[8];

    //if (FVector::DistSquared(Current, RulerPoints[RulerPoints.Num() - 1]) < FMath::Square(UEUnitsPerUnit)) return;
    //RulerPoints[RulerPoints.Num() - 1] = Current;
    RulerPoints[RulerPoints.Num() - 1] = Current - StartPoint;
    RulerPoints[RulerPoints.Num() - 1].Z = 0;
    LineIcon->SetPoints(RulerPoints);
}

float AGestureAction_Ruler::GetSnappedUnits(float RawDistance) const
{
    if (UEUnitsPerUnit <= 0.f) return 0.f;
    return FMath::RoundToFloat(RawDistance / UEUnitsPerUnit);
}

float AGestureAction_Ruler::GetTotalLength() const
{
    float Total = 0.f;
    for (int32 i = 0; i < RulerPoints.Num() - 1; i++)
        Total += FVector::Dist(RulerPoints[i], RulerPoints[i + 1]);
    return Total;
}

void AGestureAction_Ruler::AddRulerPoint()
{
    FVector Current = HandA->Points[8];
    //Current.Z = DesiredHeight;
    RulerPoints.Add(Current - StartPoint);
}