Unity新输入系统与Photon多人游戏控制反转问题求助

Hey Adrien, let's break down why you're seeing this cross-control issue in your Photon multiplayer game—even with photonView.IsMine checks in place, there are a few subtle logic gaps and missing safeguards in your code that could be causing the problem. Let's go through them one by one:

1. Missing IsMine Check on Core Player Control Logic #

You've added IsMine guards for your camera system, but if your player movement/action scripts (the ones handling actual character control) don't include a if (!photonView.IsMine) return; at the start of their Update()/FixedUpdate() methods, every player object will respond to input events—even non-local ones.

This is the most common culprit for cross-control issues. Since all player instances are running their control logic, the input from Player A gets picked up by both Player A's and Player B's scripts, leading to mutual control.

2. Flawed Input Binding Condition in CameraManager #

Looking at your BindingInput() method, the condition to skip input binding is overly specific:

if (photonView.IsMine == false && PhotonNetwork.IsConnected == true) {
    return;
}

This means if for any reason PhotonNetwork.IsConnected is false (e.g., a temporary disconnect glitch), non-local players would still bind input. Instead, simplify the check to always skip binding if the object isn't owned by the local player:

// Remove the complex condition—this covers all cases
if (!photonView.IsMine) {
    return;
}
// Proceed with input binding

3. Shared Main Camera Conflict #

Your SynchronizeWithLocalPlayer() method assigns Player_Camera = Camera.main.transform, which means all local players (in a multiplayer session) would try to control the same scene-wide main camera. Instead, you should:

• Attach a Camera component directly to each player prefab
• Enable the camera only for the local player and disable it for others:

// Add this to PlayerManager.Start()
Camera playerCamera = GetComponentInChildren<Camera>();
if (playerCamera != null) {
    playerCamera.enabled = photonView.IsMine;
}

This way, each player has their own dedicated camera, and only the local player's camera is active, avoiding cross-control of a shared camera.

4. Missing Input Cleanup in CameraManager #

When a player object is destroyed (e.g., on scene unload), your input bindings aren't being removed. This can leave stale input listeners that might interfere with new player instances. Add cleanup logic to OnDestroy():

private void OnDestroy() {
    if (Input_Master != null) {
        // Unsubscribe from the input event first
        Input_Master.Player.Look.performed -= MoveCamera;
        Input_Master.Disable();
        Destroy(Input_Master);
    }
}

5. Verify Photon Ownership #

Double-check that your player prefabs have a PhotonView component attached, and that PhotonNetwork.Instantiate is correctly assigning ownership to the local player (this is the default behavior, but it's worth confirming). You can add a debug log in PlayerManager.Awake() to verify:

void Awake() {
    if (photonView.IsMine) {
        LocalPlayerInstance = gameObject;
        Debug.Log("Local player instance set: " + gameObject.name);
    } else {
        Debug.Log("Remote player spawned: " + gameObject.name + ", owned by: " + photonView.Owner.NickName);
    }
    DontDestroyOnLoad(gameObject);
}

Try implementing these fixes one by one—start with adding the IsMine check to your player control scripts, as that's the most likely root cause. Let me know if you still run into issues after testing these changes!

内容的提问来源于stack exchange，提问作者Adrien G.