arrow_back How to solve the problem with objects passing through each other?

Question

At the start of the game all objects enter each other and continue moving together, and the must move one after the other.



Code

using System.Collections;
using System.Collections.Generic;
using System.Xml.Linq;
using UnityEngine;

public class PlayerCintroller : MonoBehaviour
{
    [HideInInspector]
    public PlayerDirection direction;

    [HideInInspector]
    public float step_Length = 1f; //???

    [HideInInspector]
    public float movement_Frequensy = 0.2f;

    private float counter;
    private bool move;

    [SerializeField]
    private GameObject tailPrefab;

    private List<Vector3> delta_Position;

    private List<Rigidbody> nodes;

    private Rigidbody main_Body;
    private Rigidbody head_Body;
    private Transform tr;

    private bool createNodeAtTail;

    


    void Awake()
    {
        tr = transform;
        main_Body = GetComponent<Rigidbody>();

        InitSnakeNodes();
        InitPlayer();

        delta_Position = new List<Vector3>
        {
            new Vector3(-step_Length,0f),  //1
            new Vector3(0f, step_Length), //2
            new Vector3(step_Length, 0f), //3
            new Vector3(0f, -step_Length),//4
        };
    }

    
    void Update()
    {
        CheckMovementFrequency();
    }

    void FixedUpdate()
    {
        if (move)
        {
            move = false;
            Move();
        }  
    }

    void InitSnakeNodes()
    {
        nodes = new List<Rigidbody>();

        nodes.Add(tr.GetChild(0).GetComponent<Rigidbody>());
        nodes.Add(tr.GetChild(1).GetComponent<Rigidbody>());
        nodes.Add(tr.GetChild(2).GetComponent<Rigidbody>());

        head_Body = nodes[0];
    }

    void SetDirectionRandom()
    {
        int dirRandom = Random.Range(0, (int)PlayerDirection.COUNT);
        direction = (PlayerDirection)dirRandom;
    }

    void InitPlayer()
    {
        SetDirectionRandom();
        switch (direction)
        {
            case PlayerDirection.RIGHT:
                nodes[1].position = nodes[0].position - new Vector3(Metrics.NODE, 0f, 0f);
                nodes[2].position = nodes[0].position - new Vector3(Metrics.NODE * 2f, 0f, 0f);
                break;
            case PlayerDirection.LEFT:
                nodes[1].position = nodes[0].position + new Vector3(Metrics.NODE, 0f, 0f);
                nodes[2].position = nodes[0].position + new Vector3(Metrics.NODE * 2f, 0f, 0f);
                break;
            case PlayerDirection.UP:
                nodes[1].position = nodes[0].position - new Vector3( 0f, Metrics.NODE, 0f );
                nodes[2].position = nodes[0].position - new Vector3( 0f, Metrics.NODE * 2f, 0f );
                break;
            case PlayerDirection.DOWN:
                nodes[1].position = nodes[0].position + new Vector3(0f, Metrics.NODE, 0f);
                nodes[2].position = nodes[0].position + new Vector3(0f, Metrics.NODE * 2f, 0f);
                break;
        }

       
    }
    void Move()
    {
        Vector3 dPosition = delta_Position[(int)direction];

        Vector3 parentPosition = head_Body.position;
        Vector3 prevPosition;

        
        head_Body.position = head_Body.position + dPosition;
        main_Body.position = main_Body.position + dPosition;

        for (int i = 1; i < nodes.Count; i++)
        {
            prevPosition = nodes[i].position;

            nodes[i].position = parentPosition;
            parentPosition = prevPosition;
        }
        if (createNodeAtTail)
        {

        }

    }

    void CheckMovementFrequency()
    {
        counter += Time.deltaTime;
        if (counter >= movement_Frequensy)
        {
            counter = 0f;
            move = true;
        }
    }
}

How to solve it, is the issue in the code or need to adjust the engine itself?

Answer 1

I haven't looked at the code yet, but I see that you have disabled sphere coliders. Turn them on for each object.

Answer 2

Offtop, but
PlayerCintroller
(Laughs)

Ah yes, I see that you do not use physics to move, but trasform.
And if you're using your body, be kind enough to move them with physics.