0210411
/
codebase


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>游戏房间</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/game_room.css">
</head>
<body>
    <div class="nav">网络五子棋对战游戏</div>
    <div class="container">
        <div id="chess_area">
            <!-- 棋盘区域, 需要基于 canvas 进行实现 -->
            <canvas id="chess" width="450px" height="450px"></canvas>
            <!-- 显示区域 -->
            <div id="screen"> 等待玩家连接中... </div>
        </div>
        <div id="chat_area" width="400px" height="300px">
            <div id="chat_show">
                <p id="self_msg">你好！</p></br>
                <p id="peer_msg">你好！</p></br>
            </div>
            <div id="msg_show">
                <input type="text" id="chat_input">
                <button id="chat_button">发送</button>
            </div>
        </div>
    </div>
    <script>
        let chessBoard = [];
        let BOARD_ROW_AND_COL = 15;
        let chess = document.getElementById('chess');
        //获取chess控件区域2d画布
        let context = chess.getContext('2d');

        // 将http协议切换为游戏房间的websocket长连接协议
        var ws_url = "ws://" + location.host + "/room";
        var ws_hdl = new WebSocket(ws_url);

        // 设置离开当前页面立即断开websocket连接
        window.onbeforeunload = function () {
            ws_hdl.close();
        }

        // 保存房间信息与是否轮到己方走棋
        var room_info;
        var is_me;

        function initGame() {
            initBoard();
            // 背景图片
            let logo = new Image();
            logo.src = "image/sky.jpeg";
            logo.onload = function () {
                // 绘制图片
                context.drawImage(logo, 0, 0, 450, 450);
                // 绘制棋盘
                drawChessBoard();
            }
        }
        function initBoard() {
            for (let i = 0; i < BOARD_ROW_AND_COL; i++) {
                chessBoard[i] = [];
                for (let j = 0; j < BOARD_ROW_AND_COL; j++) {
                    chessBoard[i][j] = 0;
                }
            }
        }
        // 绘制棋盘网格线
        function drawChessBoard() {
            context.strokeStyle = "#BFBFBF";
            for (let i = 0; i < BOARD_ROW_AND_COL; i++) {
                //横向的线条
                context.moveTo(15 + i * 30, 15);
                context.lineTo(15 + i * 30, 430); 
                context.stroke();
                //纵向的线条
                context.moveTo(15, 15 + i * 30);
                context.lineTo(435, 15 + i * 30); 
                context.stroke();
            }
        }
        //绘制棋子
        function oneStep(i, j, isWhite) {
            if (i < 0 || j < 0) return;
            context.beginPath();
            context.arc(15 + i * 30, 15 + j * 30, 13, 0, 2 * Math.PI);
            context.closePath();
            //createLinearGradient() 方法创建放射状/圆形渐变对象
            var gradient = context.createRadialGradient(15 + i * 30 + 2, 15 + j * 30 - 2, 13, 15 + i * 30 + 2, 15 + j * 30 - 2, 0);
            // 区分黑白子
            if (!isWhite) {
                gradient.addColorStop(0, "#0A0A0A");
                gradient.addColorStop(1, "#636766");
            } else {
                gradient.addColorStop(0, "#D1D1D1");
                gradient.addColorStop(1, "#F9F9F9");
            }
            context.fillStyle = gradient;
            context.fill();
        }
        //棋盘区域的点击事件
        chess.onclick = function (e) {
            // 如果当前轮到对方走棋，则直接返回
            if(is_me == false) {
                return;
            }
            let x = e.offsetX;
            let y = e.offsetY;
            // 注意, 横坐标是列, 纵坐标是行
            // 这里是为了让点击操作能够对应到网格线上
            let col = Math.floor(x / 30);
            let row = Math.floor(y / 30);
            if (chessBoard[row][col] != 0) {
                alert("当前位置已有棋子");
                return;
            }
            // 发送走棋请求
            send_chess(row, col);
        }
        // 发送走棋请求(websocket长连接通信，直接使用ws_hdl.send，而不是通过ajax)
        function send_chess(r, c) {
            var chess_info = {
                optype: "put_chess",
                room_id: room_info.room_id,
                uid: room_info.uid,
                row: r,
                col: c
            };
            ws_hdl.send(JSON.stringify(chess_info));
            console.log("click:" + JSON.stringify(chess_info));
        }
        // 聊天动作
        // 给消息发送按钮添加点击事件
        var chat_button_div = document.getElementById("chat_button");
        chat_button_div.onclick = function() {
            // 获取聊天输入框中的消息
            var chat_msg = {
                optype: "chat",
                room_id: room_info.room_id,
                uid: room_info.uid,
                message: document.getElementById("chat_input").value
            };
            // 将消息发送给服务器
            ws_hdl.send(JSON.stringify(chat_msg)); 
        }        
        // websocket各种事件的执行函数
        ws_hdl.onopen = function() {
            console.log("游戏房间长连接建立成功");
        }
        ws_hdl.onclose = function() {
            console.log("游戏房间长连接断开");
        }
        ws_hdl.onerror = function() {
            console.log("游戏房间长连接建立出错");
        }
        // 更新screen显示的内容
        function set_screen(me) {
            var screen_div = document.getElementById("screen");
            if(me) screen_div.innerHTML = "轮到己方走棋...";
            else screen_div.innerHTML = "轮到对方走棋...";
        }
        ws_hdl.onmessage = function(evt) {
            console.log("message:" + evt.data);
            var resp = JSON.parse(evt.data);
            // 收到room_ready响应消息
            if(resp.optype == "room_ready") {
                // 保存房间信息与执棋用户
                room_info = resp; 
                // 规定白棋先走
                is_me = (room_info.uid == room_info.white_id ? true : false);
                if(resp.result == false) {
                    alert(resp.reason);
                    location.replace("/login.html");
                } 
                else {
                    // 更新screen显示的内容
                    set_screen(is_me);
                    // 初始化游戏
                    initGame();
                }
            }
            // 收到put_chess响应消息
            else if(resp.optype == "put_chess") {
                // 判断走棋是否成功
                if(resp.result == false) {
                    alert(resp.reason);
                    return;
                }
                // 下棋坐标为-1表示对方掉线
                if(resp.row != -1 && resp.col != -1) {
                    // 绘制棋子
                    isWhite = (resp.uid == room_info.white_id ? true : false);
                    oneStep(resp.col, resp.row, isWhite);
                    // 更新棋盘
                    chessBoard[resp.row][resp.col] = 1;                
                }
                // 更新执棋玩家
                is_me = !is_me;
                // 更新screen显示的内容
                set_screen(is_me);
                // 判断是否有胜利者
                winner = resp.winner;
                if(winner == 0) return;
                // 更新screen信息
                var screen_div = document.getElementById("screen");
                if(winner == room_info.uid) screen_div.innerHTML = resp.reason;
                else screen_div.innerHTML = "游戏失败，再接再厉";
                // 在chess_area区域下方添加返回大厅按钮
                var chess_area_div = document.getElementById("chess_area");
                var button_div = document.createElement("div");
                button_div.innerHTML = "返回大厅";
                button_div.onclick = function() {
                    ws_hdl.close();
                    location.replace("/game_hall.html");
                }
                chess_area_div.appendChild(button_div);
            }
            // 收到chat响应消息
            else if(resp.optype == "chat") {
                if(resp.result == false) {
                    alert(resp.reason);
                    document.getElementById("chat_input").value = "";
                    return;
                }
                // 创建一个子控件，将消息内嵌到其中
                var msg_div = document.createElement("p");
                msg_div.innerHTML = resp.message;
                // 添加属性
                if(resp.uid == room_info.uid) msg_div.setAttribute("id", "self_msg");
                else msg_div.setAttribute("id", "peer_msg");
                // 添加换行
                var br_div = document.createElement("br");
                // 将消息与换行子控件渲染到聊天显示框中
                var msg_show_div = document.getElementById("chat_show");
                msg_show_div.appendChild(msg_div);
                msg_show_div.appendChild(br_div);
                // 清空输入框内容
                document.getElementById("chat_input").value = "";
            }
        }
    </script>
</body>
</html>