Vehicle destruction for demolition derby

Hello, I was wondering how to make the vehicles that I use have mesh deformation and destruction in a demolition derby-style game. are there any basic free scripts or anything that could help?

 

Hello. It reminds me a fantastic game on PS1 when I was a young player - DestructionDerby Obviously, you are a newbie using Unity. This is not a reproach - we were newbies too. Your question is really interesting and concerns mesh deformation in real-time. You should take a look at this page, but it's not for newbie. Good reading ++

https://catlikecoding.com/unity/tutorials/mesh-deformation/

Also, there is a relevant video about deformation process. All is explained :

 

I share with you a code which works as expected, but you have to improve it in order to get a better result. It deforms a mesh in real-time, checking a radius and a minimum impact magnitude. You can define malleability of the object. I keep the same principles which have been explained in the video which I shared with you above. I assume that it could be useful in order to start your project. I tested it on a sphere with a mesh collider and it works ++

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class DestructionDerby : MonoBehaviour
7. {
8.     public float minImpulse = 1f;
9.     public float strength = 0.1f;
10.     public float radius = 0.2f;
11.  
12.     private Mesh m;
13.     private MeshCollider mc;
14.     private Vector3[] verts;
15.     private Vector3[] iVerts;
16.  
17.     private void Start()
18.     {
19.         m = GetComponent<MeshFilter>().mesh;
20.         mc = GetComponent<MeshCollider>();
21.         iVerts = m.vertices;
22.     }
23.  
24.     private void OnCollisionEnter(Collision collision)
25.     {
26.         float impulse = collision.impulse.magnitude;
27.         // limit to detect collision
28.         if (impulse < minImpulse)
29.             return;
30.         // all vertices in mesh
31.         verts = m.vertices;
32.         // contact point & normal
33.         Vector3 point = transform.InverseTransformPoint(collision.GetContact(0).point);
34.         Vector3 normal = transform.InverseTransformDirection(collision.GetContact(0).normal);
35.         // deformation according radius
36.         for (int i = 0; i < verts.Length; i++)
37.         {
38.             float scale = Mathf.Clamp(radius - (point - verts[i]).magnitude, 0, radius);
39.             verts[i] += normal * impulse * strength * scale; // modify vertices pos
40.         }
41.         // recalculate mesh
42.         m.vertices = verts;
43.         mc.sharedMesh = m;
44.         m.RecalculateNormals();
45.         m.RecalculateBounds();
46.     }
47.     // clean up to previous mesh
48.     private void OnApplicationQuit()
49.     {
50.         m.vertices = iVerts;
51.     }
52. }

 

thank you I have played a few demolition derby games like wreckfest and the older demolition racer 2.