My character can't jump/Mi personaje no puede saltar

When I press "w" my character don't jump, I tagged the platform and I used the "private void OnCollisionEnter2D(Collision2D collision)", this is the script:/ Cuando presiono "w" my pesonaje no salta, yo "taggie" la plataforma y use "private void OnCollisionEnter2D(Collision2D collision)" este es el codigo:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class MovimientoI : MonoBehaviour
6. {
7.     bool canJump = true;
8.     // Start is called before the first frame update
9.     void Start()
10.     {
11.  
12.     }
13.  
14.     // Update is called once per frame
15.     void Update()
16.     {
17.         //Izquierda
18.         if (Input.GetKey("a"))
19.         {
20.             gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(-200f * Time.deltaTime, 0));
21.         }
22.         // Izquierda, más veloz
23.         if (Input.GetKey("a") && Input.GetKey(KeyCode.RightShift))
24.         {
25.             gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(-600f * Time.deltaTime, 0));
26.         }
27.         // Derecha
28.         if (Input.GetKey("d"))
29.         {
30.             gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(200f * Time.deltaTime, 0));
31.         }
32.         // Derecha, más veloz
33.         if (Input.GetKey("d") && Input.GetKey(KeyCode.RightShift))
34.         {
35.             gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(600f * Time.deltaTime, 0));
36.         }
37.         if (Input.GetKeyDown("w") && canJump)
38.         {
39.             canJump = false;
40.             gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(0, 200f));
41.         }
42.     }
43.     private void OnCollisionEnter2D(Collision2D collision)
44.     {
45.         if (collision.transform.tag == "platform")
46.         {
47.             canJump = true;
48.         }
49.     }
50. }

 

Y-hello there,

the culprit is in the OnCollisionEnter2D, the right call is

collision.gameObject.tag == "platform"

not transform.

Also for future reference, calling GetComponent each time is a waste of resources, instead you can create a Rigidbody2D variable and referencing it in the Awake() or Start() methods like:

Code (CSharp):

1. Rigidbody2D myBody;
2. void Awake()
3. {
4.    if(myBody == null)
5.       myBody = gameObject.GetComponent<Rigidbody2D>();
6. }  

and then you can just call:

myBody.AddForce(new Vector2(-200f * Time.deltaTime, 0));

Hope this helps

 

Thank you, I had not payed attention to that mistake.

 

No problem

Weirdly enough Unity does not throw an error if you use transform.tag