Question

我是 unity 的新手，在制作 UI 按钮左右移动和跳跃时遇到问题任何人都可以帮忙吗？？我正在使用 2DPlatformerController Recorded Video Session: 2D Platformer Character Controller 我有 2d 角色我把这两个脚本放在里面首先

    public class PlayerPlatformerController : PhysicsObject {
 public float maxSpeed = 7;
 public float jumpTakeOffSpeed = 7;
 private SpriteRenderer spriteRenderer;
 private Animator animator;
 // Use this for initialization
 void Awake () 
 {
     spriteRenderer = GetComponent<SpriteRenderer> ();    
     animator = GetComponent<Animator> ();
 }
 protected override void ComputeVelocity()
 {
     Vector2 move = Vector2.zero;
     move.x = Input.GetAxis ("Horizontal");
     if (Input.GetButtonDown ("Jump") && grounded) {
         velocity.y = jumpTakeOffSpeed;
     } else if (Input.GetButtonUp ("Jump")) 
     {
         if (velocity.y > 0) {
             velocity.y = velocity.y * 0.5f;
         }
     }
     bool flipSprite = (spriteRenderer.flipX ? (move.x > 0.01f) : (move.x < 0.01f));
     if (flipSprite) 
     {
         spriteRenderer.flipX = !spriteRenderer.flipX;
     }
     animator.SetBool ("grounded", grounded);
     animator.SetFloat ("velocityX", Mathf.Abs (velocity.x) / maxSpeed);
     targetVelocity = move * maxSpeed;
     }
 }

第二个

public class PhysicsObject : MonoBehaviour {
 
     public float minGroundNormalY = .65f;
     public float gravityModifier = 1f;
 
     protected Vector2 targetVelocity;
     protected bool grounded;
     protected Vector2 groundNormal;
     protected Rigidbody2D rb2d;
     protected Vector2 velocity;
     protected ContactFilter2D contactFilter;
     protected RaycastHit2D[] hitBuffer = new RaycastHit2D[16];
     protected List<RaycastHit2D> hitBufferList = new List<RaycastHit2D> (16);
 
 
     protected const float minMoveDistance = 0.001f;
     protected const float shellRadius = 0.01f;
 
     void OnEnable()
     {
         rb2d = GetComponent<Rigidbody2D> ();
     }
 
     void Start () 
     {
         contactFilter.useTriggers = false;
         contactFilter.SetLayerMask (Physics2D.GetLayerCollisionMask (gameObject.layer));
         contactFilter.useLayerMask = true;
     }
 
     void Update () 
     {
         targetVelocity = Vector2.zero;
         ComputeVelocity ();    
     }
 
     protected virtual void ComputeVelocity()
     {
 
     }
 
     void FixedUpdate()
     {
         velocity += gravityModifier * Physics2D.gravity * Time.deltaTime;
         velocity.x = targetVelocity.x;
 
         grounded = false;
 
         Vector2 deltaPosition = velocity * Time.deltaTime;
 
         Vector2 moveAlongGround = new Vector2 (groundNormal.y, -groundNormal.x);
 
         Vector2 move = moveAlongGround * deltaPosition.x;
 
         Movement (move, false);
 
         move = Vector2.up * deltaPosition.y;
 
         Movement (move, true);
     }
 
     void Movement(Vector2 move, bool yMovement)
     {
         float distance = move.magnitude;
 
         if (distance > minMoveDistance) 
         {
             int count = rb2d.Cast (move, contactFilter, hitBuffer, distance + shellRadius);
             hitBufferList.Clear ();
             for (int i = 0; i < count; i++) {
                 hitBufferList.Add (hitBuffer [i]);
             }
 
             for (int i = 0; i < hitBufferList.Count; i++) 
             {
                 Vector2 currentNormal = hitBufferList [i].normal;
                 if (currentNormal.y > minGroundNormalY) 
                 {
                     grounded = true;
                     if (yMovement) 
                     {
                         groundNormal = currentNormal;
                         currentNormal.x = 0;
                     }
                 }
 
                 float projection = Vector2.Dot (velocity, currentNormal);
                 if (projection < 0) 
                 {
                     velocity = velocity - projection * currentNormal;
                 }
 
                 float modifiedDistance = hitBufferList [i].distance - shellRadius;
                 distance = modifiedDistance < distance ? modifiedDistance : distance;
             }
 
 
         }
 
         rb2d.position = rb2d.position + move.normalized * distance;
     }
 
 }

如何修改脚本以使二维角色随 UI 按钮移动？ *注意我使用的是 unity 5.6

Answer 1

有多种处理用户输入的方法，实际上在新的 Unity 版本上有一个全新的如何处理输入系统的版本，您可以查看它here。

一个问题是，您是想要一个操纵杆来移动它（如 PS/Xbox 控制器）还是像您提议的那样在每个方向使用一个按钮。

对于操纵杆解决方案，我建议您使用 StandardAssets 插件中的 CrossPlatformInput 插件，知道您使用的是较低版本的 Unity，它会很有用。

使用起来很简单，例如：

m_Jump = CrossPlatformInputManager.GetButtonDown("Jump");

但是，如果你想用 3 个按钮来做，你必须为这些按钮制作 UI，然后让听者知道按下了哪个按钮，并将各自的力施加到指定的方向上，比如:

public Button jumpButton;
public Button rightButton;
public Button leftButton;

public float jumpSpeed;
public float speed;

private void Awake()
{
    jumpButton.onClick.AddListener(Jump);
    rightButton.onClick.AddListener(MoveRight);
    leftButton.onClick.AddListener(MoveLeft);
}

private void Jump()
{
    if(grounded)
    {
        GetComponent<Rigidbody2D>().AddForce(Vector2.up * jumpSpeed);
    }
}
private void MoveRight()
{
    GetComponent<Rigidbody2D>().AddForce(Vector2.right * speed);

}
private void MoveLeft()
{
    GetComponent<Rigidbody2D>().AddForce(Vector2.left * speed);
}

注意：我现在没有 Unity 来 100% 测试它，所以如果有任何语法错误，请告诉我修复答案，请^^

我在统一制作 ui 按钮时遇到问题

1 个答案: