立方体的位置同步

AGENT.md

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+fishnet 文档位于：Docs/FishNet-Documentation-main

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Assets/_Game/Scenes/MainScene.unity

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Assets/_Game/Scripts/MouseLook.cs

@@ -3,65 +3,101 @@ using UnityEngine.InputSystem;
 
 namespace Agame
 {
+    /// <summary>
+    /// 第一人称视角控制:鼠标横移带动 body 偏航,纵移带动相机俯仰。
+    ///
+    /// 输入来自父节点(Player 根)上 PlayerInput 的 Look 动作。
+    ///
+    /// 网络侧前提(重要):本组件挂在 PlayerCamera 上,而 PlayerCamera 只会被
+    /// <see cref="PlayerController"/> 为「本地拥有者」启用(见其 ApplyOwnership)。
+    /// 非拥有者客户端的相机是 disabled 的,因此这里不会执行,天然不需要再判所有权。
+    ///
+    /// 反过来说:如果日后把 PlayerCamera 改成常驻启用,必须补上所有权判断,
+    /// 否则每个客户端都会用自己的鼠标去转动别人玩家的视角。
+    ///
+    /// 关于光标:锁定/释放光标属于「窗口」层面,不是 gameplay 输入,
+    /// 所以刻意没有做成 Action —— 那样的话玩家一旦切到别的输入上下文
+    /// (比如打开菜单、禁用了 Player 这张 Map),连恢复光标的按键都收不到了。
+    /// </summary>
     public class MouseLook : MonoBehaviour
     {
         [Header("Sensitivity")]
         [Tooltip("Degrees of rotation per pixel of mouse movement.")]
-        public float mouseSensitivity = 0.12f;
+        [SerializeField] private float mouseSensitivity = 0.12f;
 
         [Header("Vertical Clamp")]
-        public float minLookAngle = -80f;
-        public float maxLookAngle = 80f;
+        [SerializeField] private float minLookAngle = -80f;
+        [SerializeField] private float maxLookAngle = 80f;
 
         [Header("References")]
-        public Transform characterBody;
+        [Tooltip("被偏航(Horizontal)的躯体 Transform,通常是玩家根节点。")]
+        [SerializeField] private Transform characterBody;
 
-        private float xRotation = 0f;
+        private InputAction _lookAction;
+        private float _xRotation;
+        private bool _warnedMissingBody;
 
-        private void Start()
+        private void OnEnable()
         {
+            // PlayerInput 挂在父节点(Player 根)上;相机自身可能是 disabled 的,
+            // 所以要 includeInactive 才能取到。
+            PlayerInput playerInput = GetComponentInParent<PlayerInput>(includeInactive: true);
+            _lookAction = PlayerInputNames.Resolve(playerInput, PlayerInputNames.Look, this);
+
+            // 跟随本对象的启用状态锁定光标:只有本地拥有者的相机会被启用,
+            // 所以光标锁定/释放自然就只在拥有者这一侧发生。
             LockCursor(true);
         }
 
+        private void OnDisable()
+        {
+            // 对象被禁用(非拥有者,或玩家已下线)时务必释放光标,否则会锁死在别人的机器上。
+            LockCursor(false);
+        }
+
         private void Update()
         {
-            var kb = Keyboard.current;
-            var mouse = Mouse.current;
-            if (mouse == null)
-            {
-                return;
-            }
-
-            // Esc releases the cursor, left click grabs it again (editor-friendly)
-            if (kb != null && kb.escapeKey.wasPressedThisFrame)
-            {
-                LockCursor(false);
-            }
-            if (mouse.leftButton.wasPressedThisFrame && Cursor.lockState != CursorLockMode.Locked)
-            {
-                LockCursor(true);
-            }
+            UpdateCursorLock();
 
             if (Cursor.lockState != CursorLockMode.Locked)
-            {
                 return;
-            }
 
-            // Mouse delta is in pixels for the new Input System
-            Vector2 delta = mouse.delta.ReadValue();
-            float mouseX = delta.x * mouseSensitivity;
-            float mouseY = delta.y * mouseSensitivity;
+            if (_lookAction == null)
+                return;
 
-            // Yaw the body left/right
+            // Look 绑定的是 <Mouse>/delta,读出来的就是这一帧的鼠标位移(单位:像素)。
+            Vector2 delta = _lookAction.ReadValue<Vector2>();
+
+            // 横移:转动躯体
             if (characterBody != null)
             {
-                characterBody.Rotate(Vector3.up * mouseX);
+                characterBody.Rotate(Vector3.up * (delta.x * mouseSensitivity));
+            }
+            else if (!_warnedMissingBody)
+            {
+                _warnedMissingBody = true;
+                Debug.LogWarning(
+                    $"[{nameof(MouseLook)}] 未指定 Character Body,水平视角不会生效。请指向玩家根节点的 Transform。",
+                    this);
             }
 
-            // Pitch the camera up/down
-            xRotation -= mouseY;
-            xRotation = Mathf.Clamp(xRotation, minLookAngle, maxLookAngle);
-            transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
+            // 纵移:俯仰相机,并夹在上下限之间防止翻转
+            _xRotation = Mathf.Clamp(_xRotation - (delta.y * mouseSensitivity), minLookAngle, maxLookAngle);
+            transform.localRotation = Quaternion.Euler(_xRotation, 0f, 0f);
+        }
+
+        /// <summary>
+        /// Esc 释放光标,左键重新抓取(方便编辑器里切出去)。
+        /// </summary>
+        private void UpdateCursorLock()
+        {
+            Keyboard keyboard = Keyboard.current;
+            if (keyboard != null && keyboard.escapeKey.wasPressedThisFrame)
+                LockCursor(false);
+
+            Mouse mouse = Mouse.current;
+            if (mouse != null && mouse.leftButton.wasPressedThisFrame && Cursor.lockState != CursorLockMode.Locked)
+                LockCursor(true);
         }
 
         private void LockCursor(bool locked)

Assets/_Game/Scripts/PlayerController.cs

@@ -1,64 +1,175 @@
+using FishNet.Component.Transforming;
+using FishNet.Connection;
+using FishNet.Object;
 using UnityEngine;
 using UnityEngine.InputSystem;
 
 namespace Agame
 {
+    /// <summary>
+    /// 玩家移动控制 —— FishNet 客户端授权 + Input System 的 PlayerInput / Actions 方案。
+    ///
+    /// 输入链路:
+    ///   Assets/_Game/Input/PlayerControls.inputactions
+    ///   → Player 根节点上的 PlayerInput 组件(仅本地拥有者启用)
+    ///   → 本脚本在 Update 里读取 Move / Sprint / Jump
+    ///
+    /// 本脚本同时兼任「输入与相机的所有权开关」,见 ApplyOwnership 的注释。
+    ///
+    /// FishNet 4.7.3 的三条硬约束(与输入方案无关,继续沿用):
+    /// 1. 必须继承 NetworkBehaviour,否则拿不到 IsOwner 与网络生命周期回调。
+    /// 2. IsOwner 禁止在 Awake / Start / OnStartServer / OnStartNetwork 中访问 ——
+    ///    FishNet 的 ILPP 会直接报编译错误。
+    /// 3. 只有拥有者能驱动自己的对象,少了 IsOwner 判断就会去移动别人的玩家。
+    /// </summary>
     [RequireComponent(typeof(CharacterController))]
-    public class PlayerController : MonoBehaviour
+    public class PlayerController : NetworkBehaviour
     {
         [Header("Movement")]
-        public float moveSpeed = 5f;
-        public float sprintSpeed = 8f;
-        public float gravity = -20f;
-        public float jumpHeight = 1.5f;
+        [SerializeField, Min(0f)] private float moveSpeed = 5f;
+        [SerializeField, Min(0f)] private float sprintSpeed = 8f;
 
-        private CharacterController controller;
-        private Vector3 velocity;
-        private bool isGrounded;
+        [Header("Gravity & Jump")]
+        [Tooltip("负值向下。")]
+        [SerializeField] private float gravity = -20f;
+        [SerializeField, Min(0f)] private float jumpHeight = 1.5f;
+
+        [Header("Ownership")]
+        [Tooltip("仅本地拥有者需要启用的对象(玩家相机等)。非拥有者会自动禁用,避免多相机抢占渲染。")]
+        [SerializeField] private GameObject[] ownerOnlyObjects;
+
+        private CharacterController _controller;
+        private PlayerInput _playerInput;
+
+        private InputAction _moveAction;
+        private InputAction _jumpAction;
+        private InputAction _sprintAction;
+
+        private Vector3 _verticalVelocity;
 
         private void Awake()
         {
-            controller = GetComponent<CharacterController>();
+            // Awake 中不得访问 IsOwner,这里只做纯本地缓存。
+            _controller = GetComponent<CharacterController>();
+            _playerInput = GetComponent<PlayerInput>();
+
+            if (_playerInput == null)
+            {
+                Debug.LogError(
+                    $"[{nameof(PlayerController)}] {name} 上找不到 PlayerInput 组件,输入将不可用。" +
+                    $"请在玩家预制体上加 PlayerInput,并把 Actions 指向 {PlayerInputNames.AssetFileName}。",
+                    this);
+                return;
+            }
+
+            _moveAction = PlayerInputNames.Resolve(_playerInput, PlayerInputNames.Move, this);
+            _jumpAction = PlayerInputNames.Resolve(_playerInput, PlayerInputNames.Jump, this);
+            _sprintAction = PlayerInputNames.Resolve(_playerInput, PlayerInputNames.Sprint, this);
+        }
+
+        public override void OnStartClient()
+        {
+            base.OnStartClient();
+
+            // 用 OnStartClient 而不是 Awake/Start:走到这里说明对象已完成网络链接、
+            // 所有权已分配,此时 IsOwner 才是可信的。
+            ApplyOwnership();
+            WarnIfTransformNotSynchronized();
+        }
+
+        public override void OnOwnershipClient(NetworkConnection prevOwner)
+        {
+            base.OnOwnershipClient(prevOwner);
+
+            // 所有权可能中途变更(例如将来的主机迁移),输入与相机要跟着切换。
+            ApplyOwnership();
         }
 
         private void Update()
         {
-            var kb = Keyboard.current;
-            if (kb == null)
-            {
+            // 只驱动本地拥有者。
+            if (!IsOwner)
                 return;
+
+            Vector2 moveInput = _moveAction != null ? _moveAction.ReadValue<Vector2>() : Vector2.zero;
+            Vector3 moveDirection = BuildMoveDirection(moveInput);
+
+            bool isSprinting = _sprintAction != null && _sprintAction.IsPressed();
+            float speed = isSprinting ? sprintSpeed : moveSpeed;
+
+            _controller.Move(moveDirection * (speed * Time.deltaTime));
+
+            bool jumpPressed = _jumpAction != null && _jumpAction.WasPressedThisFrame();
+            UpdateJumpAndGravity(jumpPressed);
         }
 
-            isGrounded = controller.isGrounded;
-            if (isGrounded && velocity.y < 0f)
+        /// <summary>
+        /// 把 Move 的二维输入转换为相对于角色自身朝向的三维方向
+        /// (body 的偏航由 MouseLook 负责)。斜向输入做归一化,避免对角线移动比正向更快。
+        /// </summary>
+        private Vector3 BuildMoveDirection(Vector2 moveInput)
         {
-                velocity.y = -2f;
+            Vector3 direction = transform.right * moveInput.x + transform.forward * moveInput.y;
+            return Vector3.ClampMagnitude(direction, 1f);
         }
 
-            // WASD input
-            float moveX = 0f;
-            float moveZ = 0f;
-            if (kb.aKey.isPressed) moveX -= 1f;
-            if (kb.dKey.isPressed) moveX += 1f;
-            if (kb.sKey.isPressed) moveZ -= 1f;
-            if (kb.wKey.isPressed) moveZ += 1f;
-
-            // Move relative to the capsule's own facing (which MouseLook rotates)
-            Vector3 move = transform.right * moveX + transform.forward * moveZ;
-            move = Vector3.ClampMagnitude(move, 1f);
-
-            float speed = kb.leftShiftKey.isPressed ? sprintSpeed : moveSpeed;
-            controller.Move(move * speed * Time.deltaTime);
-
-            // Jump
-            if (kb.spaceKey.wasPressedThisFrame && isGrounded)
+        private void UpdateJumpAndGravity(bool jumpPressed)
         {
-                velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
+            bool isGrounded = _controller.isGrounded;
+
+            // 贴地时保留一点向下的力,防止 isGrounded 在斜坡/台阶上反复抖动。
+            if (isGrounded && _verticalVelocity.y < 0f)
+                _verticalVelocity.y = -2f;
+
+            if (isGrounded && jumpPressed)
+            {
+                // 由目标跳跃高度反推初速度:v = sqrt(2 * g * h)
+                _verticalVelocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
             }
 
-            // Gravity
-            velocity.y += gravity * Time.deltaTime;
-            controller.Move(velocity * Time.deltaTime);
+            _verticalVelocity.y += gravity * Time.deltaTime;
+            _controller.Move(_verticalVelocity * Time.deltaTime);
+        }
+
+        /// <summary>
+        /// 按所有权统一开关「只属于本地玩家」的东西:PlayerInput 与玩家相机。
+        ///
+        /// 集中放在这里的原因:这两样都是「一个客户端只该有一份生效」。
+        /// 散到各脚本里各自 enable 容易漏,而且会出现顺序问题 ——
+        /// PlayerCamera 上的 MouseLook 在 OnEnable 里就要读 Look 动作,
+        /// 所以必须先开 PlayerInput、再启用相机,否则第一帧读不到值。
+        /// </summary>
+        private void ApplyOwnership()
+        {
+            if (_playerInput != null)
+                _playerInput.enabled = IsOwner;
+
+            if (ownerOnlyObjects == null)
+                return;
+
+            foreach (GameObject target in ownerOnlyObjects)
+            {
+                if (target != null)
+                    target.SetActive(IsOwner);
+            }
+        }
+
+        /// <summary>
+        /// 缺少 NetworkTransform 时位置不会同步,但画面上"自己能走",极易误判成逻辑没问题。
+        /// 这里主动报一次,省掉对着两个人不同步干瞪眼的时间。
+        /// </summary>
+        private void WarnIfTransformNotSynchronized()
+        {
+            if (!IsOwner)
+                return;
+
+            if (GetComponent<NetworkTransform>() == null)
+            {
+                Debug.LogWarning(
+                    $"[{nameof(PlayerController)}] {name} 上没有 NetworkTransform,位置不会同步到其他客户端。" +
+                    "请在 Player 预制体上加 NetworkTransform,并开启 Client Authoritative 与 Synchronize Position。",
+                    this);
+            }
         }
     }
 }

Assets/_Game/Scripts/PlayerCubeCreator.cs

@@ -0,0 +1,54 @@
+using FishNet.Object;
+using UnityEngine;
+using UnityEngine.InputSystem;
+using UnityEngine.Serialization;
+
+namespace Agame
+{
+    /// <summary>
+    /// 按攻击键在当前位置生成一个方块,生成动作经 ServerRpc 在服务端执行。
+    ///
+    /// 输入来自 Player 根节点上 PlayerInput 的 Attack 动作 —— 与 <see cref="PlayerController"/>
+    /// 共用同一个 PlayerInput(因此 PlayerInput 的启用/禁用也统一由 PlayerController 按所有权管理,
+    /// 这里只读动作,不再自己 enable 组件)。
+    /// </summary>
+    public class PlayerCubeCreator : NetworkBehaviour
+    {
+        [Tooltip("要生成的方块预制体。必须已登记进 FishNet 的可生成预制体列表(DefaultPrefabObjects)。")]
+        [FormerlySerializedAs("CubePrefab")]
+        [SerializeField] private NetworkObject cubePrefab;
+
+        private InputAction _attackAction;
+
+        private void Awake()
+        {
+            // Awake 中不得访问 IsOwner,这里只做纯本地缓存。
+            _attackAction = PlayerInputNames.Resolve(GetComponent<PlayerInput>(), PlayerInputNames.Attack, this);
+        }
+
+        private void Update()
+        {
+            // 只让拥有者发起攻击,否则每个客户端都会去指挥别人的玩家造方块。
+            if (!IsOwner)
+                return;
+
+            if (_attackAction != null && _attackAction.WasPressedThisFrame())
+                SpawnCube();
+        }
+
+        [ServerRpc]
+        private void SpawnCube()
+        {
+            if (cubePrefab == null)
+            {
+                Debug.LogError(
+                    $"[{nameof(PlayerCubeCreator)}] {name} 的 Cube Prefab 没有指定,无法生成方块。",
+                    this);
+                return;
+            }
+
+            NetworkObject obj = Instantiate(cubePrefab, transform.position, Quaternion.identity);
+            Spawn(obj); // NetworkBehaviour 对 ServerManager.Spawn 的快捷封装
+        }
+    }
+}

Assets/_Game/Scripts/PlayerCubeCreator.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 42ed262caf19a9040bf314a318cfecb6

Assets/_Game/Scripts/PlayerInputNames.cs

@@ -0,0 +1,70 @@
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+namespace Agame
+{
+    /// <summary>
+    /// 输入资产 Assets/_Game/Input/PlayerControls.inputactions 的名称与取值入口。
+    ///
+    /// 把 Action 名集中在这里,是为了避免 "Move"/"Look"/"Attack" 这类字符串散落在三个脚本里 ——
+    /// 将来在输入资产里改名,只需要动这一处。
+    ///
+    /// 约定:三个玩家脚本一律从 PlayerInput 实例上取 Action,而不是各自序列化一个资产引用。
+    /// 因为 PlayerInput 可能为每个玩家实例化一份 Actions 副本,从实例上取才能拿到正确的那一份。
+    /// </summary>
+    public static class PlayerInputNames
+    {
+        /// <summary>输入资产的文件名,仅用于错误提示。</summary>
+        public const string AssetFileName = "PlayerControls.inputactions";
+
+        /// <summary>Action Map 名称,需与输入资产中的 Map 一致。</summary>
+        public const string ActionMap = "Player";
+
+        public const string Move = "Move";
+        public const string Look = "Look";
+        public const string Jump = "Jump";
+        public const string Sprint = "Sprint";
+        public const string Attack = "Attack";
+
+        /// <summary>
+        /// 从 PlayerInput 上解析指定 Action,解析失败时返回 null 并给出明确的错误信息。
+        /// 这里刻意用 LogError 而不是直接抛 NullReferenceException ——
+        /// "输入没反应但又不报错"是这类问题里最难排查的一种,必须留下痕迹。
+        /// </summary>
+        public static InputAction Resolve(PlayerInput playerInput, string actionName, Object context)
+        {
+            string ownerName = context != null ? context.name : "(未知对象)";
+
+            if (playerInput == null)
+            {
+                Debug.LogError(
+                    $"[{nameof(PlayerInputNames)}] {ownerName} 上找不到 PlayerInput 组件,无法读取输入。" +
+                    $"请在玩家预制体上加 PlayerInput 组件,并把 Actions 指向 {AssetFileName}。",
+                    context);
+                return null;
+            }
+
+            InputActionAsset asset = playerInput.actions;
+            if (asset == null)
+            {
+                Debug.LogError(
+                    $"[{nameof(PlayerInputNames)}] {ownerName} 的 PlayerInput 没有指定 Actions 资产," +
+                    $"请把 {AssetFileName} 拖进 PlayerInput 的 Actions 槽。",
+                    context);
+                return null;
+            }
+
+            InputAction action = asset.FindAction(actionName, throwIfNotFound: false);
+            if (action == null)
+            {
+                Debug.LogError(
+                    $"[{nameof(PlayerInputNames)}] {AssetFileName} 里找不到名为 \"{actionName}\" 的动作," +
+                    "请确认 Map 与 Action 名和脚本里的一致。",
+                    context);
+                return null;
+            }
+
+            return action;
+        }
+    }
+}

Assets/_Game/Scripts/PlayerInputNames.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 379ed2c2823ca764982411eec577adce