How To Make Player Transform Into Ball and Back Using Space Key

Hey @TheGreenHornut, this was a fun experiment :)

This script will inflate your model to a ball and back.

In the attached script you can should set up the center of the model. The model will inflate around this point, so make sure it's inside your model. You can set the radius of the ball and the transitionTime.

The script will put each vertice in distance of radius from the center, with the same direction it had before.

I'm assuming you know how to handle space-bar pressing, but if not, please check out unity docs: https://docs.unity3d.com/ScriptReference/Input.GetKeyDown.html

Enjoy

 using UnityEngine;
 
 [RequireComponent(typeof(MeshFilter))]
 public class inflateModel : MonoBehaviour {
     public float transitionTime = 5;
     public float radius = 10;
     public Vector3 center = Vector3.zero;
 
     private float timeLeft;
     private bool inflate = true;
     private Vector3[] originalVertices;
     private Vector3[] inflatedVertices;
     private Vector3[] currentVertices;
     private Mesh mesh;
 
     void Start()
     {
         timeLeft = transitionTime;
         mesh = GetComponent<MeshFilter>().mesh;
         originalVertices = mesh.vertices;
         inflatedVertices = new Vector3[originalVertices.Length];
         currentVertices = new Vector3[originalVertices.Length];
         for (int i = 0; i < originalVertices.Length; i++)
         {
             inflatedVertices[i] = (originalVertices[i] - center).normalized * radius + center;
             currentVertices[i] = originalVertices[i];
         }
     }
 
     void Update () {
         timeLeft -= Time.deltaTime;
         if (timeLeft <= 0)
         {
             timeLeft = transitionTime;
             inflate = !inflate;
         }
 
         float t = timeLeft / transitionTime;
         if (!inflate)
             t = 1 - t;
 
         for (int i = 0; i < currentVertices.Length; i++)
         {
             currentVertices[i] = Vector3.Lerp(inflatedVertices[i], originalVertices[i], t);
         }
         mesh.vertices = currentVertices;
         mesh.RecalculateBounds();
     }
 }