Unity 2018.1.3f1 Player的Rigidbody2D和Box Collider 2D不与可碰撞的瓦片碰撞

Question

我似乎找不到找到使播放器与应该停止播放器的对象碰撞的方法。例如，当我将播放器移到一堵树的墙壁上时，它会像穿过幽灵般在它们之间移动（并稍微偏离网格对齐反弹）。

以下是我所使用的有关Player动作的代码：

using System.Collections;
using UnityEngine;

public class PlayerMovement : Character {

    Direction currentDir;
    Vector2 input;
    bool IsMoving = false;
    Vector3 startpos;
    Vector3 endpos;
    float t;

    public Sprite upsprite;
    public Sprite rightsprite;
    public Sprite downsprite;
    public Sprite leftsprite;

    public float walkSpeed = 3f;

    public bool isAllowedToMove = true;

    private Rigidbody2D myRB;

    void Start()
    {
        isAllowedToMove = true;
        myRB = GetComponent<Rigidbody2D>();
    }

    // Update is called once per frame
    protected override void Update () {
        if (! IsMoving && isAllowedToMove) {
            input = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
            if (Mathf.Abs(input.x) > Mathf.Abs(input.y))
                input.y = 0;
            else
                input.x = 0;

            if (input != Vector2.zero) {
                if (input.x < 0) {
                    currentDir = Direction.Left;
                }
                if (input.x > 0) {
                    currentDir = Direction.Right;
                }
                if (input.y < 0) {
                    currentDir = Direction.Down;
                }
                if (input.y > 0) {
                    currentDir = Direction.Up;
                }

                switch (currentDir) {
                    case Direction.Up:
                        gameObject.GetComponent<SpriteRenderer>().sprite = upsprite;
                        break;
                    case Direction.Right:
                        gameObject.GetComponent<SpriteRenderer>().sprite = rightsprite;
                        break;
                    case Direction.Down:
                        gameObject.GetComponent<SpriteRenderer>().sprite = downsprite;
                        break;
                    case Direction.Left:
                        gameObject.GetComponent<SpriteRenderer>().sprite = leftsprite;
                        break;
                }

                StartCoroutine (Move (transform));
            }

            myRB.velocity = new Vector2 (Input.GetAxisRaw ("Horizontal") * walkSpeed, myRB.velocity.y);
            myRB.velocity = new Vector2 (myRB.velocity.x, Input.GetAxisRaw ("Vertical") * walkSpeed);

            if (Input.GetAxisRaw ("Horizontal") < 0.5f && Input.GetAxisRaw ("Horizontal") > -0.5f) 
            {
                myRB.velocity = new Vector2 (0f, myRB.velocity.y);
            }

            if (Input.GetAxisRaw ("Vertical") < 0.5f && Input.GetAxisRaw ("Vertical") > -0.5f) 
            {
                myRB.velocity = new Vector2(myRB.velocity.y, 0f);
            }
        }

        base.Update ();
    }

    public IEnumerator Move(Transform entity)
    {
        IsMoving = true;
        startpos = entity.position;
        t = 0;

        endpos = new Vector3(startpos.x + System.Math.Sign(input.x), startpos.y + System.Math.Sign(input.y), startpos.z);

            while(t < 1f)
            {
                t += Time.deltaTime * walkSpeed;
                entity.position = Vector3.Lerp(startpos, endpos, t);
                yield return null;
            }

        IsMoving = false;
        yield return 0;
    }
}

enum Direction
{
    Up,
    Right,
    Down,
    Left
}

要注意的其他事情是，我确保使用Rigidbody2D和Box Collider2D组件，并且确保将播放器的Gravity scale设置为0，并冻结了Z轴的旋转。此外，尽管预先安装的tilemap资产是创建2d游戏世界的不错选择，但我确实使用Tiled和Tiled2Unity扩展来创建您在游戏中看到的图块。

请原谅我，如果它看起来太长，但是我似乎无法弄清冲突检测的问题所在。有人可以帮忙吗？