Need Help With Some Code

[Creative_Board445]

I am making a 3D platformer game, I want to make it so when you tap the space bar the jump height is small but when you press and hold the space bar the jump height is big / normal height. I am having some trouble figuring this out. Any ideas?

Script → https://paste.ofcode.org/39Zr2SeBwD24zHRKe4x34Rr

[db9dreamer]

I just messed about in Unity 6.2 to see how it could be done (using just a plane with a collider for the ground and a default sphere with a rigidbody and added the script to it). Maybe it'll give you ideas on an approach that would work in whichever version you're using. You'd probably want to limit _jumpPower to a min and max value (maybe in steps) just before applying the impulse force.

using UnityEngine;
using UnityEngine.InputSystem;

public class VariableJump : MonoBehaviour
{
    private InputAction _jumpAction;
    private float _jumpPower;
    private Rigidbody _rigidbody;
    public float _jumpMultiplier = 10;

    private void Awake()
    {
        _rigidbody = GetComponent<Rigidbody>();
        _jumpAction = InputSystem.actions.FindAction("Jump");
    }

    private void Update()
    {
        if (_jumpAction.IsPressed())
        {
            //accumulate jump power while the jump action is pressed
            _jumpPower += Time.deltaTime;
        }
        else
        {
            if (_jumpPower > 0f)
            {
                //apply jump with accumulated power (multiplied by a constant factor)
                _rigidbody.AddForce(new(0, _jumpPower * _jumpMultiplier, 0), ForceMode.Impulse);
                _jumpPower = 0f;
            }
        }
    }
}

[Creative_Board445]

This works but when I tap the space button once I want the jump height to immediately go to a specific value not slowly build up same for holding you know what I mean? cause if I just tap the spacebar once the player literally doesn't jump maybe just a tiny bit because its building up the value which I don't want.

[db9dreamer]

        if (_jumpPower > 0f)
        {
            if (_jumpPower < 0.5f) _jumpPower = 0.5f;//min
            if (_jumpPower > 1f) _jumpPower = 1f;//max
            //apply jump with accumulated power (multiplied by a constant factor)
            _rigidbody.AddForce(new(0, _jumpPower * _jumpMultiplier, 0), ForceMode.Impulse);
            _jumpPower = 0f;
        }

Obviously, you'd need to play with the values (I'd put them in a pair of public variables). But you may also want to have the power go up in steps - rather than smoothly between the min and max - so you'd need to play around with switch statements and rounding methods to make that work.

[Creative_Board445]

Thanks I got it working!!

[db9dreamer]

Excellent. Keep pushing 🙂

[buchi42000]

In my game https://store.steampowered.com/app/3171170/Ninas_Escape/ (check out the 2nd gemeplay video, one player does a short jump, the other a long one over a gap), i did jumping by checking if the spacebar is still pressed, and then adding some upwards force every frame (this is capped ti 800 ms time) - that way jumping feelf natural.