placeObjectsOnLine.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class placeObjectsOnLine : MonoBehaviour
{
    public GameObject objectToPlace; // The GameObject to place along the line
    public LineRenderer lineRenderer; // Reference to the LineRenderer component

    [Header("Use Context Menu to Place Objects.")]
    [Min(1)]
    public int numberOfObjects = 10; // Number of objects to place along the line

    public bool PlaceObject = false;
    public bool SendToRecycleBin = false;


    private void OnValidate()
    {
        if (SendToRecycleBin)
        {
            OrphanAllChildren();
            SendToRecycleBin = false;
        }
        if (PlaceObject)
        {
            PlaceObjects();
            PlaceObject = false;
        }
    }


    [ContextMenu("PlaceObjects")]
    void PlaceObjects()
    {
        if (objectToPlace == null || lineRenderer == null)
        {
            Debug.LogError("Object to place or LineRenderer not assigned!");
            return;
        }

        float totalDistance = 0f;

        // Calculate the total distance of the line
        for (int i = 0; i < lineRenderer.positionCount - 1; i++)
        {
            totalDistance += Vector3.Distance(lineRenderer.GetPosition(i), lineRenderer.GetPosition(i + 1));
        }

        float step = totalDistance / (numberOfObjects - 1);
        float currentDistance = 0f;

        for (int i = 0; i < numberOfObjects -1; i++)
        {
            Vector3 position = GetPositionAtDistance(currentDistance);

            GameObject obj = Instantiate(objectToPlace, position + transform.position, Quaternion.identity);
            obj.transform.parent = transform;

            currentDistance += step;
        }

        Vector3 lastPosition = lineRenderer.GetPosition(lineRenderer.positionCount - 1);
        GameObject obj2 = Instantiate(objectToPlace, lastPosition + transform.position, Quaternion.identity);
        obj2.transform.parent = transform;

    }

    // Helper method to get the position at a specific distance along the line
    Vector3 GetPositionAtDistance(float distance)
    {
        float currentDistance = 0f;

        for (int i = 0; i < lineRenderer.positionCount - 1; i++)
        {
            float segmentDistance = Vector3.Distance(lineRenderer.GetPosition(i), lineRenderer.GetPosition(i + 1));

            if (currentDistance + segmentDistance >= distance)
            {
                float t = (distance - currentDistance) / segmentDistance;
                return Vector3.Lerp(lineRenderer.GetPosition(i), lineRenderer.GetPosition(i + 1), t);
            }

            currentDistance += segmentDistance;
        }

        // This should not happen if the distance is within the total line distance
        return Vector3.zero;
    }

    [ContextMenu("Recycle Bin")]
    private void OrphanAllChildren()
    {
        int childCount = transform.childCount;
        var rubbishbin = new GameObject();

        rubbishbin.name = "Recycle Bin";

        for (int i = 0; i < childCount; i++)
        {
            transform.GetChild(0).parent = rubbishbin.transform;
        }
        rubbishbin.gameObject.SetActive(false);
    }
    
}