How to make explosion which is stronger when you click longer?

Hello,
I am a bit of a unity noob and was wondering how I could make an explosion where the mouse is with force dependent on how long the user clicks. Can’t find any sources explaining how to do this.
I would be grateful for any answers.
Thx.

First you need to setup an explosion which gets strength as an parameter. Then use this code:

public class ChargingExplosionStrength : MonoBehaviour {
    private float strength = 0.0f;
    public float maxSeconds = 1.0f;
    public float chargeSpeed = 1.0f;

    public void Update() {
        if(Input.GetMouseButton(0)) {
            this.strength += Time.deltaTime * this.chargeSpeed; 
        }
        if(this.charged >= this.maxSeconds) {
            // pass your explosion strength here and do the explosion
            this.strength = 0.0f
        }
    }
}

As long as the LMB is clicked the strength will increase. The default charge speed is 1 unit per second and after 1 second it goes off automatically. You can also increase the maxSeconds to make the player charge longer or chargeSpeed to increase the charge faster (or both to meake a stronger explosion in the same amount of time).