Question

所以我正在完成本教程。 https://www.youtube.com/watch?v=OBtaLCmJexk 我无法在任何地方找到我的代码中的错误问题在于，在处理垂直光线碰撞后，我运行程序并且块刚刚穿过障碍物。这是播放器代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(Controller2D))]
public class Player : MonoBehaviour {

    float gravity = -20;
    Vector3 velocity;

    Controller2D controller;

    void Start() {
        controller = GetComponent<Controller2D>();
    }

    void Update() {
        velocity.y += gravity * Time.deltaTime;
        controller.Move(velocity * Time.deltaTime);
    }
}

这是Controller2D代码：

using UnityEngine;

[RequireComponent(typeof(BoxCollider2D))]
public class Controller2D : MonoBehaviour {
    public LayerMask collisionMask;
    const float skinWidth = .015f;
    public int horizontalRayCount = 4;
    public int verticalRayCount = 4;

    float horizontalRaySpacing;
    float verticalRaySpacing;

    BoxCollider2D collider;
    RaycastOrigins raycastOrigins;

    void Start() {
        collider = GetComponent<BoxCollider2D>();
        CalculateRaySpacing();
    }

    public void Move(Vector3 velocity) {
        UpdateRaycastOrigins();
        VerticalCollisions(ref velocity);
        transform.Translate(velocity);
    }

    void VerticalCollisions(ref Vector3 velocity) {
        float directionY = Mathf.Sign(velocity.y);
        float rayLength = Mathf.Abs(velocity.y) + skinWidth;
        for (int i = 0; i < verticalRayCount; i++) {
            Vector2 rayOrigin = (directionY == -1) ? raycastOrigins.bottomLeft : raycastOrigins.topLeft;
            rayOrigin += Vector2.right * (verticalRaySpacing * i + velocity.x);
            RaycastHit2D hit = Physics2D.Raycast(rayOrigin, Vector2.up * directionY, rayLength, collisionMask);
            Debug.DrawRay(raycastOrigins.bottomLeft + Vector2.right * verticalRaySpacing * i, Vector2.up * -2, Color.red);
            if (hit) {
                velocity.y = (hit.distance - skinWidth) * directionY;
                rayLength = hit.distance;
            }
        }
    }

    void UpdateRaycastOrigins() {
        Bounds bounds = collider.bounds;
        bounds.Expand(skinWidth * -2);

        raycastOrigins.bottomLeft = new Vector2(bounds.min.x, bounds.min.y);
        raycastOrigins.bottomRight = new Vector2(bounds.max.x, bounds.min.y);
        raycastOrigins.topLeft = new Vector2(bounds.min.x, bounds.max.y);
        raycastOrigins.topRight = new Vector2(bounds.max.x, bounds.max.y);
    }

    void CalculateRaySpacing() {
        Bounds bounds = collider.bounds;
        bounds.Expand(skinWidth * -2);

        horizontalRayCount = Mathf.Clamp(horizontalRayCount, 2, int.MaxValue);
        verticalRayCount = Mathf.Clamp(verticalRayCount, 2, int.MaxValue);

        horizontalRaySpacing = bounds.size.y / (horizontalRayCount - 1);
        verticalRaySpacing = bounds.size.y / (verticalRayCount - 1);
    }

    struct RaycastOrigins {
        public Vector2 topLeft, topRight;
        public Vector2 bottomLeft, bottomRight;
    }
}

编辑：代码是（正如我从半小时的教程中理解的那样。）只是为四元组（玩家）定义属性，以便它可以与另一个四元组（障碍物）发生碰撞。目前代码应该只能垂直工作。所以我通过在玩家下面画出障碍并按下游戏来测试它。玩家应该停留在障碍物上，而是直接穿过障碍物。 My screen after selecting the player block

并询问调试，我不太了解该语言，在尝试调试时不会破坏任何内容。

Answer 1

我只是让不和谐的人得到帮助，事实证明我没有设置boxcollider2D的障碍物非常感谢所有尝试过的人。

为什么光线碰撞不是一致的

1 个答案: