统一:触点延迟太高了

Question

我想做一个游戏，在那里你可以扔物品在2D通过拖放。这很好，但跟踪抓住他们是非常糟糕的。如果我在上半个地方碰它们，跟踪就不起作用，甚至几乎不起作用。

还有其他方法来防止这种情况发生吗？

public class DropsBehaviour : MonoBehaviour {
    //Declaring Variables
    public int force = 10;
    float maxSpeedPreset = 5;
    float maxSpeed = 5;
    float MaxThrowSpeed = 8;

    GameManager gm;
    Rigidbody rig;
    Camera cam;

    bool selected = false;
    bool once = false;
    void Start() {
        gm = GameManager.FindMe();
        rig = GetComponent<Rigidbody>();
        cam = Camera.main;
    }

    void Update() {
        if (selected) {
            rig.AddForce((cam.ScreenToWorldPoint(Input.mousePosition) - transform.position) * force);

            rig.velocity = Vector3.zero;
        } else {
            if (!once) {
                maxSpeed = maxSpeedPreset * gm.gameSpeed;
                rig.velocity = new Vector3(Mathf.Clamp(rig.velocity.x, -maxSpeed, maxSpeed), Mathf.Clamp(rig.velocity.y, -maxSpeed, maxSpeed), Mathf.Clamp(rig.velocity.z, -maxSpeed, maxSpeed));
            } else {
                maxSpeed = maxSpeedPreset;
                rig.velocity = new Vector3(Mathf.Clamp(rig.velocity.x, -MaxThrowSpeed, MaxThrowSpeed), Mathf.Clamp(rig.velocity.y, -MaxThrowSpeed, MaxThrowSpeed), Mathf.Clamp(rig.velocity.z, -MaxThrowSpeed, MaxThrowSpeed));
            }
        }
    }

    void OnMouseDown() {
        if (tag != "NoInteract") {
            selected = true;
            once = true;
        }
    }

    void OnMouseUp() {
        selected = false;
    }
}

Answer 1

我在您发布的代码片段中看到了一些可能导致口吃的问题。

首先，如果您要用2D制作一些东西，建议使用Rigidbody2D和Collider2D。

然后，你不应该用手编辑刚体的速度，如医生所述。这就是增加力量的目的。在更新任何与物理有关的内容时，您应该使用FixedUpdate，而不是更新。

我猜你也忘了在第一遍上写“一次=假”？真的不确定这件事。

我按照前面提到的要点编辑了您的脚本，同时保持刚体3D。我没有测试它，但希望它能纠正你正在经历的奇怪的拖曳行为！(请注意，我删除了GameManager部分，因为我不知道它做了什么)

public class DropsBehaviour : MonoBehaviour
{
    public int force = 10;

    private const float MaxSpeedPreset = 5;
    private float _maxSpeed = 5;
    private const float MaxThrowSpeed = 8;

    private Rigidbody _rig;
    private Camera _cam;

    private bool _selected;
    private bool _once;
    private Vector3 _targetVelocity;

    private void Start()
    {
        _rig = GetComponent<Rigidbody>();
        _cam = Camera.main;
    }

    private void Update()
    {
        if (_selected) return;

        if (!_once)
        {
            _maxSpeed = MaxSpeedPreset * 10;
            _targetVelocity = new Vector3(Mathf.Clamp(_rig.velocity.x, -_maxSpeed, _maxSpeed),
                Mathf.Clamp(_rig.velocity.y, -_maxSpeed, _maxSpeed),
                Mathf.Clamp(_rig.velocity.z, -_maxSpeed, _maxSpeed));
        }
        else
        {
            _maxSpeed = MaxSpeedPreset;
            _targetVelocity = new Vector3(Mathf.Clamp(_rig.velocity.x, -MaxThrowSpeed, MaxThrowSpeed),
                Mathf.Clamp(_rig.velocity.y, -MaxThrowSpeed, MaxThrowSpeed),
                Mathf.Clamp(_rig.velocity.z, -MaxThrowSpeed, MaxThrowSpeed));
            _once = false; //Dunno if it's intended or not ?
        }
    }

    private void FixedUpdate()
    {
        if (_selected)
        {
            _rig.AddForce((_cam.ScreenToWorldPoint(Input.mousePosition) - transform.position) * force);
            _rig.velocity = Vector3.zero;
            return;
        }

        var velocity = _rig.velocity;
        var velocityChange = _targetVelocity - velocity;
        _rig.AddForce(velocityChange, ForceMode.VelocityChange);
    }

    private void OnMouseDown()
    {
        if (CompareTag("NoInteract")) return;

        _selected = true;
        _once = true;
    }

    private void OnMouseUp()
    {
        _selected = false;
    }
}

顺便提一句，我个人不喜欢标签，我会用LayerMask代替，因为它有点与物理有关。我可能也会用Raycast来代替OnMouse事件，这样你就可以更好地控制物理方面发生的事情。