删除飞行功能，改为跳跃

先删除￥Player里的Configurable Joint

勾选一下使用重力

在PlayerInput里

public class PlayerInput : MonoBehaviour
{
    ...

    //private ConfigurableJoint joint;

    void Start()
    {
        //joint = GetComponent<ConfigurableJoint>();
    }

    void Update()
    {
        ...
        //飞行
        Vector3 force = Vector3.zero;
        if (Input.GetButton("Jump")) {
            force = Vector3.up * thrusterForce;
            controller.Thrust(force);
            //joint.yDrive = new JointDrive
            //{
            //    positionSpring = 0f,
            //    positionDamper = 0f,
            //    maximumForce = 0f,
            //};
        }
        //else
        //{
        //    joint.yDrive = new JointDrive
        //    {
        //        positionSpring = 20f,
        //        positionDamper = 0f,
        //        maximumForce = 40f,
        //    };
        //}

        //controller.Rotate(yRotation, xRotation);
    }
}

在PlayerController里

public class PlayerController : MonoBehaviour
 {
    ...
    private void PerformMovement()
    {
        ...
        if (thrusterForce != Vector3.zero)
        {
            ...
            //跳跃是给一下力，而不是持续的力，所以力要清零
            thrusterForce = Vector3.zero;
        }
    }

}

判断双脚是否离地

在PlayerInput里

public class PlayerInput : MonoBehaviour
{
    [SerializeField]
    private float thrusterForce = 100f;

    private float distToGround = 0f;


    void Start()
    {
        //unity自带的api来判断物体里地面的距离
        //返回中心点到碰撞检测下边界的长度
        distToGround = GetComponent<Collider>().bounds.extents.y;
    }

    void Update()
    {
        ...
        //跳跃
        if (Input.GetButton("Jump"))
        {
            if(Physics.Raycast(transform.position, -Vector3.up, distToGround + 0.1f))
            {
                Vector3 force = Vector3.up * thrusterForce;
                controller.Thrust(force);   
            }

        }
    }
}

*修改重力

将小球换成好的模型

修改碰撞体

修改向下看会看到自己身体的bug

在PlayerSetup里

public class PlayerSetup : NetworkBehaviour

{
    ...
    public override void OnNetworkSpawn()
    {
        ...

        if (!IsLocalPlayer)
        {
            SetLayerMaskForAllChildren(transform, LayerMask.NameToLayer("Remote Player"));
            ...
        }
        else
        {
            sceneCamera = Camera.main;
            if(sceneCamera != null)
            {
                SetLayerMaskForAllChildren(transform, LayerMask.NameToLayer("Player"));
                ...
            }
        }
        ...
    }
    //写一个递归函数将所有子节点的物体都换上指定的图层
    private void SetLayerMaskForAllChildren(Transform transform, LayerMask layerMask)
    {
        transform.gameObject.layer = layerMask;
        for(int i = 0; i < transform.childCount; i++)
        {
            SetLayerMaskForAllChildren(transform.GetChild(i), layerMask);
        }
    }

    ...

}

实现走路动画

创建Animator Controller来管理动画

实现动画

处理状态机图

编写参数direction

在PlayerController里

//改为NetworkBehaviour
public class PlayerController : NetworkBehaviour
 {
    ...
    private float eps = 0.01f;
    //上一帧的位置
    private Vector3 lastFramePosition = Vector3.zero;
    private Animator animator;

    void Start()
    {
        Cursor.lockState = CursorLockMode.Locked;
        //随便初始化一下位置
        lastFramePosition = transform.position;
        animator = GetComponentInChildren<Animator>();
    }

    private void PerformAnimation()
    {
        //两个位置的差值为一个向量
        Vector3 deltaPosition = transform.position - lastFramePosition;
        //更新上一帧位置
        lastFramePosition = transform.position;

        //（以forward为例）如果是正的，代表这个差值，有向transform.forward
        float forward = Vector3.Dot(deltaPosition, transform.forward);
        float right = Vector3.Dot(deltaPosition, transform.right);

        int direction = 0;
        if(forward > eps)
        {
            direction = 1;
        }
        else if(forward < -eps)
        {
            if(right > eps)
            {
                direction = 4; //右后
            }
            else if (right < -eps)
            {
                direction = 6; // 左后
            }
            else
            {
                direction = 5; // 后
            }
        }else if(right > eps)
        {
            direction = 3;
        }
        else if(right < -eps)
        {
            direction = 7;
        }

        animator.SetInteger("direction", direction);

    }

    ...

    //好像是unity版本问题，如果PerformAnimation(), 放进Update()里会有问题
    private void FixedUpdate()
    {
        if (IsLocalPlayer)
        {
            PerformMovement();
            PerformRotation();
        }
        PerformAnimation(); 
    }
    private void Update()
    {

    }

}