如何使用C＃避免Unity中MidAir跳转

Question

I want to create a jumping Script, i got so far, the problem is that i do not want the gameObject to jump midair

I tried using OnCollisionStay/Enter together with OnCollisionExit to generate a bool which gets checked together with Input before jumping, this worked the best but unity is missing triggers

I cant check for position with gameObject.transform.position.y because i have differently elevated platforms.

isGrounded works with a different code but it interferes with my other movements (which are implemented by AddForce on Input)

I can't wrap my head around why this code doesn't work, i hope someone can help me understand.

using UnityEngine
public class PlayerMovement : MonoBehaviour
{
    private CharacterController controller;
    public Rigidbody rb;
    public Transform PPos; 
    public float jumpForce = 10f;
}
    public void Update()
{

    if(controller.isGrounded && Input.GetKeyDown(KeyCode.Space))
    {
      rb.AddForce(0, jumpForce, 0);
      Debug.Log("Jump Executed");
    }
}

I don't get a Syntax Error

Answer 1

Edit

You need to set the controller.isGrounded whenever your character has the ability to jump.

PlayerScript

void OnCollisionEnter(collision other)
{
    controller.isGrounded = other.gameObject.CompareTag("Ground");
}

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Original

If you want to jump in mid-air, you're going to have to remove the condition that your character controller is on the ground.

if(Input.GetKeyDown(KeyCode.Space))