Moving and jumping

Questions & Answers
1

Hi! I create a moving script and “jumping”. But when I holding up arrow character fly no simple once jump.
My script:

using UnityEngine;

using System.Collections;

public class Moving : MonoBehaviour {

public float speed = 10f;

public Vector2 maxVelocity = new Vector2(3, 5);

public float JumpPower = 0.25f;

private Rigidbody2D RB;

void Start () {

RB = GetComponent();

}

void Update () {

var forceX = 0f;

var forceY = 0f;

var absVelX = Mathf.Abs(GetComponent().velocity.x);

if (Input.GetKey(“right”))

{

if (absVelX < maxVelocity.x)

forceX = speed;

transform.localScale = new Vector3(1, 1, 1);

}

else if (Input.GetKey(“left”))

{

if (absVelX < maxVelocity.x)

forceX = -speed;

transform.localScale = new Vector3(-1, 1, 1);

}

GetComponent().AddForce(new Vector2(forceX, forceY));

{

if (Input.GetKey(“up”))

{

RB.AddForce(new Vector2(0, JumpPower), ForceMode2D.Impulse);

}

}

}

}

2

Your character is flying because it continually adds force when pressing up arrow.

So what you can do is check if it touches the ground, it is able to add force like:

private bool ground = true;

void OnTriggerEnter(){ // enters a collider
      ground = true;
}

void OnTriggerExit(){ //exit a collider
      ground = false;
}

and then edit your

if (Input.GetKey("up")) {
      RB.AddForce(new Vector2(0, JumpPower), ForceMode2D.Impulse);
}
// to 
if (Input.GetKey("up")) {
      if(ground) {
            RB.AddForce(new Vector2(0, JumpPower), ForceMode2D.Impulse);
      }
}