Problem in character control "Character can't jump"

Question

I am practicing with creating a 2D-Game and I write the C#-script code but my character can't jump.

I try to replace "Space" with "UpArrow" that also didn't work.

if (Input.GetKey(KeyCode.UpArrow) && onGround)
 {
 rb.velocity = new Vector2(rb.velocity.x, jumppower);
 }

Nothing Happen. Character can'r move Right and Left but not jump.

a few points what value is jumppower? is onGround true? have you added some statements to check its running your command? that velocity could be not what you intended... — BugFinder, May 14 '19 at 14:18
Change `GetKey` to `GetKeyDown` and check that `onGround` is returning true — CoderJoe, May 14 '19 at 14:18

Jack Mariani · Accepted Answer · 2019-05-14T16:39:03.260

Some items to start with:

make sure onGroundis true. => add a Debug.Log($"is on ground {onGround}") before the if and check it.
Make sure the code is in the Update() loop (you can set it also in FixedUpdate, but update is better)

Then I see a logic issue. This is what happens in your code:

To solve this replace this line:

rb.velocity = new Vector2(rb.velocity.x, jumppower);

With this:

rb.AddForce(new Vector2(0, jumppower), ForceMode2D.Impulse);

1 Answers1