Bachelor-Thesis_Furkan_Karakocaoglu/testumgebung/CrowdModelling/Assets/Depictions_Years/Scripts/WanderingAI/WalkLerpPlayback.cs

using UnityEngine;
using UnityEngine.AI;
using System.Collections.Generic;
using System.IO;
using System;

public class WalkLerpPlayback : MonoBehaviour
{
    // Waypoints and Rotations
    private Tuple<List<float>, List<Vector3>, List<Quaternion>>[][] timePosRotList;

    // Private Journey Settings
    private int currentStartPoint;
    private float startTime;

    //Animator
    private GameObject[][] humansGO;
    private Animator[][] humansA;
    private NavMeshAgent[][] humansNMA;

    private void Start()
    {
        // Get information from InstatiatePrefab
        humansGO = gameObject.GetComponent<InstantiatePrefab>().humanGameObject;
        humansA = gameObject.GetComponent<InstantiatePrefab>().humanAnimator;
        humansNMA = gameObject.GetComponent<InstantiatePrefab>().humanNavMeshAgent;

        // Read from CSV file and save time, position, rotation in matrix
        int index = gameObject.GetComponent<WriteInCSVNew>().index;
        string dir = Directory.GetCurrentDirectory();
        string reference = @"\Assets\CSV_files\Walk" + index + ".csv";
        timePosRotList = gameObject.GetComponent<ReadFromCSVNew>().ReadFromCSVFile(dir + reference);

        // Set initial position and rotation
        currentStartPoint = 0;
        for (int i = 0; i < humansGO.Length; ++i)
        {
            for (int j = 0; j < humansGO[i].Length; ++j)
            {
                humansGO[i][j].transform.position = timePosRotList[0][0].Item2[0]; // First entry of Position
                humansGO[i][j].transform.rotation = timePosRotList[0][0].Item3[0]; // First entry of Rotation
                // Animation Idle
                humansA[i][j].SetBool("isWalking", false);
                humansA[i][j].SetBool("isIdle", true);

                humansNMA[i][j].enabled = false;
            }
        }

        SetTransform(currentStartPoint);
        currentStartPoint++;
        startTime = Time.time;
    }

    private int indexChangeRate;
    //PlaybackController is setting the following variables
    [HideInInspector]
    public bool rewind, pause, play;

    private void FixedUpdate()
    {
        if (pause)
            indexChangeRate = 0;
        if (play)
            indexChangeRate = 1;
        if (rewind)
            indexChangeRate = -1;
   
        if (play || rewind)
        {
            if ((currentStartPoint + indexChangeRate) < timePosRotList[0][0].Item2.Count && (currentStartPoint + indexChangeRate) >= 0)
            {
                currentStartPoint += indexChangeRate;
                SetTransform(currentStartPoint);
            }
        }
        else
        {
            for (int i = 0; i < humansGO.Length; ++i)
            {
                for (int j = 0; j < humansGO[i].Length; ++j)
                {
                    humansA[i][j].SetBool("isWalking", false);
                    humansA[i][j].SetBool("isIdle", true);
                }
            }
        }
    }

    private void SetTransform(int currentStartPoint)
    {
        for (int i = 0; i < humansGO.Length; ++i)
        {
            for (int j = 0; j < humansGO[i].Length; ++j)
            {
                // if so ArgumentOutOfRangeException
                if ((currentStartPoint + indexChangeRate) >= timePosRotList[i][j].Item2.Count || (currentStartPoint + indexChangeRate) < 0)
                {
                    return;
                }

                Vector3 startPos = timePosRotList[i][j].Item2[currentStartPoint];
                Vector3 endPos = timePosRotList[i][j].Item2[currentStartPoint + 1];
                Quaternion startRot = timePosRotList[i][j].Item3[currentStartPoint];
                Quaternion endRot = timePosRotList[i][j].Item3[currentStartPoint + 1];

                float distCovered = (Time.time - startTime) * humansA[i][j].speed;
                float fracJourney = 1f;
                float journeyLength = Vector3.Distance(startPos, endPos);
                if (journeyLength != 0 && distCovered != 0) fracJourney = distCovered / journeyLength;

                // Animation Idle, if startPoint == endPoint and startRot == endRot
                if (journeyLength <= 0 && startRot.Equals(endRot) || currentStartPoint == 0 || currentStartPoint == timePosRotList[i][j].Item2.Count)
                {
                    humansA[i][j].SetBool("isWalking", false);
                    humansA[i][j].SetBool("isIdle", true);
                }
                else if (journeyLength > 0)
                {
                    humansA[i][j].SetBool("isWalking", true);
                    humansA[i][j].SetBool("isIdle", false);
                }
                //humansA[i][j].speed = 2*(journeyLength / 0.2f);

                humansGO[i][j].transform.position = Vector3.Lerp(startPos, endPos, fracJourney);
                humansGO[i][j].transform.rotation = Quaternion.Lerp(startRot, endRot, fracJourney);
            }
        }
    }
}