Bounce Attack Like in Sonic the hedgehog

Its been a while since I played Sonic, I will not remember the exact sequence of action from the game, instead I will build my answer from the details you have provided.

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I have answered a question on chain attack, it might not be exactly the same, but it is worth taking a look at. I am going to use the same technique from that question and modify it to fit your question.

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Preparation

1. Create a trigger sphere prefab

2. Animate the sphere to scale up ( start from 0 to MaximumRange ), so the effect will strike the closest enemy first

   Steps

   Assumption: the attack occurs when you are inAir/isJumpinng and you pressed an attack button (in this example, A-key)*

3. Press jump, character isJumping

4. Press A, spawn a trigger-sphere

5. If trigger-sphere hit a destructible-object, send a message to character (search for target, this will make your character hit the nearest target)

6. Move character towards the destructible-object, (hit)

7. When character hit the destructible-object, move the character upward (bounce)

8. If A is still pressed, restart from Step-2

   Sample Script

   Trigger script*

   public class TriggerSphere : MonoBehaviour { public GameObject character;

    void OnTriggerEnter( Collider other ) {
          if( other.gameObject.CompareTag("CanHit") ) {
    
             /* Note: A */ 
    
             character.SendMessage("SetBounceTarget", other.gameObject);
             Kill();
          }
       }
    
       //Call this using an animation event, just in case the sphere strike nothing at all
       void Kill() {
          Destroy(gameObject);
       }
    }
   
   

Character Script

 public class Character : MonoBehaviour {
    public TriggerSphere ts;
 
    private bool isJumping = false;
    private GameObject moveToward;
    void Update() {
       ...

       if( isJumping && Input.GetKeyDown(KeyCode.A) && moveToward == null ) {
          TriggerSphere tsClone = Instantiate( ts, transform.position, Quaternion.identity );
          tsClone.character = gameObject;
       }
 
       if( moveToward != null ) {
          /* Note : B */
       }
    }
 
    void OnCollisionEnter( Collision collision ) {
       if( collision.gameObject.CompareTag("CanHit") ) {
          isJumping = false;
          /* Note : C */
       }
    }

    void SetBounceTarget( GameObject go ) {
       moveToward = go;  
    }
 }

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Note

A

You need to use a raycast to check there is no obstacle between your character and the destructible-object. You should hit the closest and non-obstructed destructible-object.

B

Do a calculation on how to move toward a gameobject, you can use Google to assist you

C

When you have hit a destrutible-object, you will need to return your character back to the jumping-state ( applying force, setting variables to true, etc. Whatever you are using to making your character jump )

 if( isJumping && Input.Get$$anonymous$$eyDown($$anonymous$$eyCode.A) && moveToward == null ) {
    ...
 }