如何使玩家在Unity中上山

Question

Hey guys so im making a 2D Platformer and ran into a difficult situation. Up until now I have had rectangular landscapes for the player to jump and walk on. Now I want to start adding some hills. Picture a triangle, the left side is representing a hill at which the player can walk up. Ive made the landscape as well as copied over the Box Collider 2D from my other paths. I figured out a way to rotate the collider so that it goes up at a 45 degree angle just like the slope of the triangle. For some reason though when I walk into the triangle the player doesnt start walking up it. I have to jump onto the hill and he lands on what looks like an invisible rectangle! I make the collider .25 in thickness so I know that I have the whole collider where I want it. Any idea why? I dont really have any code for this as everything Im doing has pretty much been in scene view. Thanks everyone!

Here is the Player in Play Mode, stands on top of hill by some force:

Here is what the collider looks like in scene view. Ive moved the collider all over and it still does the same thing:

Here is my movement code:

public class Player : MonoBehaviour {

    public float maxSpeed = 3;
    public float speed = 50f;
    public float jumpPower = 150f;

    public bool grounded;

    private Rigidbody2D rb2d;
    private Animator anim;

    void Start () {

        rb2d = gameObject.GetComponent<Rigidbody2D>();
        anim = gameObject.GetComponent<Animator>();
    }


    void Update () {

        anim.SetBool("Grounded",grounded);
        anim.SetFloat("Speed", Mathf.Abs(rb2d.velocity.x));

        if (Input.GetAxis("Horizontal") < -0.1)
        {
            transform.localScale = new Vector3(-1, 1, 1);

        }
        if (Input.GetAxis("Horizontal") > 0.1)
        {
            transform.localScale = new Vector3(1, 1, 1);

        }

        if (Input.GetButtonDown("Jump") && grounded)
        {
            rb2d.AddForce(Vector2.up * jumpPower);

        }

    }

    void FixedUpdate() {

        Vector3 easeVelocity = rb2d.velocity;
        easeVelocity.y = rb2d.velocity.y;
        easeVelocity.z = 0.0f;
        easeVelocity.x *= 0.75f; 

        float h = Input.GetAxis("Horizontal");

        //Fake friction / Easing the x speed of our player
        if (grounded)
        {

            rb2d.velocity = easeVelocity;


        }



        //Moving the Player
        rb2d.AddForce((Vector2.right * speed) * h);

        //Limiting the Speed of the Player
        if (rb2d.velocity.x > maxSpeed)
        {
            rb2d.velocity = new Vector2(maxSpeed, rb2d.velocity.y);

        }

        if (rb2d.velocity.x < -maxSpeed)
        {
            rb2d.velocity = new Vector2(-maxSpeed, rb2d.velocity.y);

        }
    }
}

The Ground Material is applied to this landscape just like the other rectangular landscape. Sorry Im new but again, thanks everyone!

Answer 1

I believe you should take a look at the 2D Plaftormer Controller tutorial series by Sebastian Lague . The series is focused on creating a robust 2D platformer controller, and it is very well made. I have watched the videos and built a working solution based on them.

The fourth episode of the series is focused on climbing slopes, and the next episode is focused on descending them. But I still suggest that you should start from the beginning and follow the series patiently. Lague always offers very detailed explanations to why he implements thing a certain way.

Answer 2

I'm new to Unity as well but a thought I had was...is it possible your collider dimensions are resetting after the first frame? Maybe you can manually set the collider to stay at a certain angle to test this. Just a thought! I'd be interested to know what you find out.