Unity如何判断两物体相交

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

public class cubemanger5 : MonoBehaviour
{
    public GameObject cubePrefab;
    public int numCubes;
    public float minSize;
    public float maxSize;
    public GameObject cubeA;
    public float moveSpeed;

    private List<GameObject> cubes = new List<GameObject>();
    private float totalSurfaceArea = 0f;

    // Start is called before the first frame update
    void Start()
    {
        // Instantiate cubes
        for (int i = 0; i < numCubes; i++)
        {
            GameObject cube = Instantiate(cubePrefab);
            cube.transform.position = new Vector3(Random.Range(-5f, 5f), Random.Range(0f, 5f), Random.Range(-5f, 5f));
            float size = Random.Range(minSize, maxSize);
            cube.transform.localScale = new Vector3(size, size, size);
            cube.GetComponent<Renderer>().material.color = Random.ColorHSV();
            cubes.Add(cube);

            // Calculate surface area
            totalSurfaceArea += 6 * size * size;
        }
    }

    // Update is called once per frame
    void Update()
    {  // Move cubeA
        float moveHorizontal = Input.GetAxis("Horizontal");
        float moveVertical = Input.GetAxis("Vertical");
        Vector3 movement = new Vector3(moveHorizontal, 0f, moveVertical);
        cubeA.transform.position += movement * moveSpeed * Time.deltaTime;
        if (Input.GetKeyDown(KeyCode.Space))
        {       

            // Check for collisions with other cubes
            foreach (GameObject cube in cubes)
            {
                if (cube != cubeA && cube.GetComponent<BoxCollider>().bounds.Intersects(cubeA.GetComponent<BoxCollider>().bounds))
                {
                    Debug.Log("相交");
                    // Calculate overlapping area
                    Vector3 overlap = Vector3.Scale(cubeA.GetComponent<BoxCollider>().bounds.size + cube.GetComponent<BoxCollider>().bounds.size - (cubeA.GetComponent<BoxCollider>().bounds.max - cube.GetComponent<BoxCollider>().bounds.min), new Vector3(1f, 0f, 1f));
                    float overlapArea = overlap.x * overlap.z;

                    // Subtract overlapping area from total surface area
                    totalSurfaceArea -= overlapArea;
                }
            }

            // Output total surface area
            Debug.Log("Total Surface Area: " + totalSurfaceArea);
        }
          
    }
}