Unityで始めるオンラインゲーム制作 Photon Pun2 チャット導入辺

2020年3月20日

こんにちわジェイです。今回は前回のプロジェクトに引き続きチャットの機能を追加していきます。
古いバージョンと比較しながらの解説です。

Contents

1. PunのInRoomChat
2. Pun2のInRoomChat
- 2.1. 修正した内容
- 2.2. 実行結果 InRoomChat

PunのInRoomChat

using System.Collections.Generic;
using UnityEngine;
using System.Collections;
[RequireComponent(typeof(PhotonView))]
public class InRoomChat : Photon.MonoBehaviour
{
public Rect GuiRect = new Rect(0,0, 250,300);
public bool IsVisible = true;
public bool AlignBottom = false;
public List<string> messages = new List<string>();
private string inputLine = "";
private Vector2 scrollPos = Vector2.zero;
public static readonly string ChatRPC = "Chat";
public void Start()
{
if (this.AlignBottom)
{
this.GuiRect.y = Screen.height - this.GuiRect.height;
}
}
public void OnGUI()
{
if (!this.IsVisible || !PhotonNetwork.inRoom)
{
return;
}
if (Event.current.type == EventType.KeyDown && (Event.current.keyCode == KeyCode.KeypadEnter || Event.current.keyCode == KeyCode.Return))
{
if (!string.IsNullOrEmpty(this.inputLine))
{
this.photonView.RPC("Chat", PhotonTargets.All, this.inputLine);
this.inputLine = "";
GUI.FocusControl("");
return; // printing the now modified list would result in an error. to avoid this, we just skip this single frame
}
else
{
GUI.FocusControl("ChatInput");
}
}
GUI.SetNextControlName("");
GUILayout.BeginArea(this.GuiRect);
scrollPos = GUILayout.BeginScrollView(scrollPos);
GUILayout.FlexibleSpace();
for (int i = messages.Count - 1; i >= 0; i--)
{
GUILayout.Label(messages[i]);
}
GUILayout.EndScrollView();
GUILayout.BeginHorizontal();
GUI.SetNextControlName("ChatInput");
inputLine = GUILayout.TextField(inputLine);
if (GUILayout.Button("Send", GUILayout.ExpandWidth(false)))
{
this.photonView.RPC("Chat", PhotonTargets.All, this.inputLine);
this.inputLine = "";
GUI.FocusControl("");
}
GUILayout.EndHorizontal();
GUILayout.EndArea();
}
[PunRPC]
public void Chat(string newLine, PhotonMessageInfo mi)
{
string senderName = "anonymous";
if (mi.sender != null)
{
if (!string.IsNullOrEmpty(mi.sender.NickName))
{
senderName = mi.sender.NickName;
}
else
{
senderName = "player " + mi.sender.ID;
}
}
this.messages.Add(senderName +": " + newLine);
}
public void AddLine(string newLine)
{
this.messages.Add(newLine);
}
}

これを空のオブジェクトに張り付けて起動するだけでチャットが実装されますが、Pun2で使うにはいくつか修正しなければなりません。

Pun2のInRoomChat

using System.Collections.Generic;
using UnityEngine;
using System.Collections;
using Photon.Pun;
using Photon.Realtime;
[RequireComponent(typeof(PhotonView))]
public class InRoomChat : MonoBehaviourPunCallbacks
{
public Rect GuiRect = new Rect(0, 0, 250, 300);
public bool IsVisible = true;
public bool AlignBottom = false;
public List<string> messages = new List<string>();
private string inputLine = "";
private Vector2 scrollPos = Vector2.zero;
public static readonly string ChatRPC = "Chat";
public void Start()
{
if (this.AlignBottom)
{
this.GuiRect.y = Screen.height - this.GuiRect.height;
}
}
public void OnGUI()
{
if (!this.IsVisible || !PhotonNetwork.InRoom)
{
return;
}
if (Event.current.type == EventType.KeyDown && (Event.current.keyCode == KeyCode.KeypadEnter || Event.current.keyCode == KeyCode.Return))
{
if (!string.IsNullOrEmpty(this.inputLine))
{
this.photonView.RPC("Chat", RpcTarget.All, this.inputLine);
this.inputLine = "";
GUI.FocusControl("");
return; // printing the now modified list would result in an error. to avoid this, we just skip this single frame
}
else
{
GUI.FocusControl("ChatInput");
}
}
GUI.SetNextControlName("");
GUILayout.BeginArea(this.GuiRect);
scrollPos = GUILayout.BeginScrollView(scrollPos);
GUILayout.FlexibleSpace();
for (int i = messages.Count - 1; i >= 0; i--)
{
GUILayout.Label(messages[i]);
}
GUILayout.EndScrollView();
GUILayout.BeginHorizontal();
GUI.SetNextControlName("ChatInput");
inputLine = GUILayout.TextField(inputLine);
if (GUILayout.Button("Send", GUILayout.ExpandWidth(false)))
{
this.photonView.RPC("Chat", RpcTarget.All, this.inputLine);
this.inputLine = "";
GUI.FocusControl("");
}
GUILayout.EndHorizontal();
GUILayout.EndArea();
}
[PunRPC]
public void Chat(string newLine, PhotonMessageInfo mi)
{
string senderName = "anonymous";
if (mi.Sender != null)
{
if (!string.IsNullOrEmpty(mi.Sender.NickName))
{
senderName = mi.Sender.NickName;
}
else
{
senderName = "player " + mi.Sender.UserId;
}
}
this.messages.Add(senderName + ": " + newLine);
}
public void AddLine(string newLine)
{
this.messages.Add(newLine);
}
}

修正した内容

Photon.MonoBehaviourをMonoBehaviourPunCallbacksに変更
PhotonNetwork.inRoomをPhotonNetwork.InRoomに変更
photonView.RPC(“Chat", PhotonTargets.All,inputLine);をphotonView.RPC(“Chat", RpcTarget.All,inputLine);に変更
PhotonMessageInfoの要素のsenderをSenderに、IDをUserIDに変更
sender.ID→Sender.UserIdに変更