Html5游戏开发-145行代码完成一个RPG小Demo

lufy前辈写过《[代码艺术]17行代码的贪吃蛇小游戏》一文，忽悠了不少求知的兄弟进去阅读，阅读量当然是相当的大。今天我不仿也搞一个这样的教程，目地不在于忽悠人，而在于帮助他人。

先看demo效果图：

测试URL：

http://www.cnblogs.com/yorhom/articles/3157553.html

关注我的blog的人不仿会看到我最近发布了新引擎lufylegendRPG 1.0.0，今天就算来推广一下这个引擎吧。也好让大家见证一下封装的力量。

引擎下载地址：http://www.cnblogs.com/yorhom/archive/2013/06/08/3126534.html

lufylegendRPG 1.0.0发布帖：http://blog.csdn.net/yorhomwang/article/details/9103451

首先为了不让大家质疑，我先声明，我这里说的145代码没有经过压缩和格式优化，只不过这里是没有包含脚本的……毕竟脚本太大了嘛……

（lufy前辈一定心中在想：“你还不是忽悠人，还冤枉我”）

话不多讲，把145行代码上给大家看看：

LSystem.screen(LStage.FULL_SCREEN);
init(50,"mylegend",480,288,main);
LGlobal.setDebug(true);
LRPG.setShortcuts(true);

var backLayer,loadingLayer;
var loadData = [
    {path:"./js/script.js",type:"js"},
    {name:"map",path:"./images/map01.jpg"},
    {name:"player",path:"./images/p0.png"},
    {name:"npc",path:"./images/p1.png"},
    {name:"m",path:"./images/m.jpg"},
    {name:"n",path:"./images/n.jpg"},
    {name:"talk",path:"./images/back.png"},
    {name:"e1",path:"./images/e1.png"},
    {name:"e2",path:"./images/e2.png"}
];
var datalist = [];

var map,mapData;
var charaList;
var talkContent;
var jumpTo;
var stage;

var isJumpMap = false;
var stageObj;

var dir = "";

function main(){
    loadingLayer = new LoadingSample3(); 
    addChild(loadingLayer); 

    LLoadManage.load(
        loadData,
        function(progress){
            loadingLayer.setProgress(progress);
        },
        gameInit
    );
}
function gameInit(result){
    removeChild(loadingLayer);
    datalist = result;
    
    initLayer();
    
    initScriptData();
    stage = script.stage01;
    initScript();
    addCtrl();
}
function initLayer(){
    backLayer = new LSprite();
    addChild(backLayer);
    ctrlLayer = new LSprite();
    addChild(ctrlLayer);
}
function addScene(){
    var mapObj = new LTileMap(map,datalist["map"],32,32,mapData);
    var stageData = new LSceneData(mapObj,charaList,talkContent);
    stageObj = new LScene(stageData);
    backLayer.addChild(stageObj);
    
    var talkBoardData = new LBitmapData(datalist["talk"]);
    var talkBoard = new LBitmap(talkBoardData);
    talkBoard.scaleX = 28;
    talkBoard.scaleY = 6.2;
    talkBoard.x = 100;
    talkBoard.y = 70;
    talkBoard.alpha = 0.7;
    
    stageObj.talk.x = 120;
    stageObj.talk.y = 30;
    stageObj.setTalkStyle({x:-80,y:20},{x:20,y:55,size:12,color:"lightgray"},{x:20,y:85,size:10,color:"lightgray"},talkBoard,200);
    stageObj.addMoveEventListener(LEvent.COMPLETE,function(){
        for(var i=0;i<jumpTo.length;i++){
            if(isJumpMap == false && stageObj.playerX == jumpTo[i].at.x && stageObj.playerY == jumpTo[i].at.y){
                stage = script[jumpTo[i].to];
                initScript();
                isJumpMap = true;
            }
            if(isJumpMap == true)isJumpMap = false;
        }
    });
}
function addCtrl(){
    var bitmapdata = new LBitmapData(datalist["e1"]);
    var bitmap = new LBitmap(bitmapdata);
    bitmap.x = 0;
    bitmap.y = 0;
    ctrlLayer.addChild(bitmap);
    var bitmapdata = new LBitmapData(datalist["e2"]);
    var bitmap = new LBitmap(bitmapdata);
    bitmap.x = 280;
    bitmap.y = 30;
    ctrlLayer.addChild(bitmap);
    ctrlLayer.x = 40;
    ctrlLayer.y = 160;
    
    addEvent();
}
function addEvent(){
    backLayer.addEventListener(LMouseEvent.MOUSE_DOWN,ondown);
    backLayer.addEventListener(LMouseEvent.MOUSE_UP,onup);
    backLayer.addEventListener(LEvent.ENTER_FRAME,onframe);
}
function ondown(event){
    if(event.offsetX >= ctrlLayer.x + 40 && event.offsetX <= ctrlLayer.x+80){
        if(event.offsetY >= ctrlLayer.y && event.offsetY <= ctrlLayer.y+40){
            dir = "UP";
        }else if(event.offsetY >= ctrlLayer.y+80 && event.offsetY <= ctrlLayer.y+120){
            dir = "DOWN";
        }
    }else if(event.offsetX >= ctrlLayer.x && event.offsetX <= ctrlLayer.x+40){
        dir = "LEFT";
    }else if(event.offsetX >= ctrlLayer.x+80 && event.offsetX <= ctrlLayer.x+120){
        dir = "RIGHT";
    }
}
function onup(event){
    dir = "";
    if(event.offsetX >= ctrlLayer.x + 280 && event.offsetX <= ctrlLayer.x+330){
        if(event.offsetY >= ctrlLayer.y+40 && event.offsetY <= ctrlLayer.y+100){
            stageObj.startTalk();
        }
    }
}
function onframe(){
    switch(dir){
        case "UP":
            stageObj.movePlayer(LPlayerMove.UP);
            break;
        case "DOWN":
            stageObj.movePlayer(LPlayerMove.DOWN);
            break;
        case "LEFT":
            stageObj.movePlayer(LPlayerMove.LEFT);
            break;
        case "RIGHT":
            stageObj.movePlayer(LPlayerMove.RIGHT);
            break;
    }
}

可以看到，代码是还是老样子，没有一点压缩。其实这里面大家没有看到一点数据是因为我把数据放在了脚本里，脚本可以是一种特定格式的语言，可以用自定义的，比如像lufy前辈的L#。当然在js里也可以用xml和json，json比较方便，所以这次就选择了它，里面的代码如下：

var script;

function initScriptData(){
    script = {
        stage01:{
            map:[
                [18,18,18,18,18,18,18,18,18,18,18,18,55,55,18,18,18],
                [18,18,18,17,17,17,17,17,17,17,17,17,55,55,17,17,18],
                [18,18,17,17,17,17,18,18,17,17,17,17,55,55,17,17,18],
                [18,17,17,17,18,18,18,18,18,17,17,55,55,17,17,17,18],
                [18,17,17,18,22,23,23,23,24,18,17,55,55,17,17,17,18],
                [18,17,17,18,25,28,26,79,27,18,55,55,17,17,17,17,18],
                [18,17,17,17,17,10,11,12,18,18,55,55,17,17,17,17,17],
                [18,18,17,17,10,16,16,16,11,55,55,17,17,17,17,17,18],
                [18,18,17,17,77,16,16,16,16,21,21,17,17,17,17,17,18],
                [18,18,17,17,77,16,16,16,16,55,55,17,17,17,17,17,18],
                [18,18,18,18,18,18,18,18,18,55,55,18,18,18,18,18,18]
            ],
            mapdata:[
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
                [1,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,1],
                [1,1,0,0,0,0,1,1,0,0,0,0,1,1,0,0,1],
                [1,0,0,0,1,1,1,1,1,0,0,1,1,0,0,0,1],
                [1,0,0,1,1,1,1,1,1,1,0,1,1,0,0,0,1],
                [1,0,0,1,1,1,0,1,1,1,1,1,0,0,0,0,1],
                [1,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0],
                [1,1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,1],
                [1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1],
                [1,1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,1],
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
            ],
            add:[
                {chara:"player",data:datalist["player"],row:4,col:4,speed:3,x:5,y:6},
                {chara:"npc",talkIndex:1,data:datalist["npc"],row:4,col:4,speed:3,x:7,y:7},
                {chara:"npc",talkIndex:2,data:datalist["npc"],row:4,col:4,speed:3,x:3,y:3}
            ],
            talk:{
                1:[
                    {face:datalist["m"],name:"[鸣人]",msg:"我是木叶村的鸣人，你是谁？"},
                    {face:datalist["n"],name:"[黑衣忍者甲]",msg:"你就是鸣人？九尾还在你身体里吗？"}
                ],
                2:[
                    {face:datalist["n"],name:"[黑衣忍者乙]",msg:"鸣人，听说忍者大战就要开始了。"},
                    {face:datalist["m"],name:"[鸣人]",msg:"真的吗？一定要想想办法啊。"}
                ]
            },
            jump:[
                {at:{x:6,y:5},to:"stage02"},
                {at:{x:16,y:6},to:"stage03"}
            ]
        },
        stage02:{
            map:[
                [0,0,1,2,2,2,2,2,2,2,2,1,0,0,0],
                [0,0,1,3,5,5,1,5,5,5,5,1,0,0,0],
                [0,0,1,80,4,4,1,80,4,4,4,1,0,0,0],
                [0,0,1,80,4,4,1,80,8,7,8,1,0,0,0],
                [0,0,1,80,4,4,5,81,4,4,4,1,0,0,0],
                [0,0,1,2,2,2,6,4,4,4,4,1,0,0,0],
                [0,0,1,3,5,5,81,4,4,4,4,1,0,0,0],
                [0,0,1,80,4,4,4,4,4,4,9,1,0,0,0],
                [0,0,1,2,2,2,2,6,2,2,2,1,0,0,0]
            ],
            mapdata:[
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
                [1,1,1,0,0,0,1,0,0,0,0,1,1,1,1],
                [1,1,1,0,0,0,1,0,0,0,0,1,1,1,1],
                [1,1,1,0,0,0,1,0,0,1,0,1,1,1,1],
                [1,1,1,0,0,0,0,0,0,0,0,1,1,1,1],
                [1,1,1,1,1,1,0,0,0,0,0,1,1,1,1],
                [1,1,1,0,0,0,0,0,0,0,0,1,1,1,1],
                [1,1,1,0,0,0,0,0,0,0,1,1,1,1,1],
                [1,1,1,1,1,1,1,0,1,1,1,1,1,1,1]
            ],
            add:[
                {chara:"player",data:datalist["player"],row:4,col:4,speed:3,x:7,y:8},
                {chara:"npc",talkIndex:1,data:datalist["npc"],row:4,col:4,speed:3,x:8,y:3},
                {chara:"npc",talkIndex:2,data:datalist["npc"],row:4,col:4,speed:3,x:10,y:3}
            ],
            talk:{
                1:[
                    {face:datalist["m"],name:"[鸣人]",msg:"你们在干什么啊？"},
                    {face:datalist["n"],name:"[黑衣忍者甲]",msg:"我们在喝茶。"}
                ],
                2:[
                    {face:datalist["n"],name:"[黑衣忍者乙]",msg:"我们在喝茶，你不要打扰我们。"},
                    {face:datalist["m"],name:"[鸣人]",msg:"....."}
                ]
            },
            jump:[
                {at:{x:7,y:8},to:"stage01"}
            ]
        },
        stage03:{
            map:[
                [55,55,55,55,55,55,55,55,55,55,55,55,55,55,55,55,55],
                [55,55,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19],
                [55,55,19,19,19,18,19,19,18,18,18,18,17,17,17,17,19],
                [55,55,55,19,19,19,19,19,19,18,18,17,17,17,19,19,19],
                [55,19,55,19,19,18,19,19,18,19,17,17,17,17,19,18,19],
                [55,19,19,19,19,19,18,19,18,19,17,17,17,17,19,19,19],
                [10,11,11,11,11,11,11,12,17,17,17,17,17,17,19,18,19],
                [55,19,19,19,19,19,19,16,11,56,57,17,17,17,19,19,19],
                [55,18,17,17,77,16,16,16,16,55,55,17,17,17,19,19,19],
                [55,19,17,17,77,16,16,16,16,55,55,18,18,19,19,19,18],
                [55,55,55,55,55,55,55,55,55,55,55,55,55,55,55,55,55]
            ],
            mapdata:[
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
                [1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1],
                [1,1,1,1,1,1,1,1,1,1,1,0,0,0,1,1,1],
                [1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,1],
                [1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,1],
                [0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1],
                [1,1,1,1,1,1,1,0,0,1,1,0,0,0,1,1,1],
                [1,1,0,0,0,0,0,0,0,1,1,0,0,0,1,1,1],
                [1,1,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1],
                [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
            ],
            add:[
                {chara:"player",data:datalist["player"],row:4,col:4,speed:3,x:1,y:6},
                {chara:"npc",talkIndex:1,data:datalist["npc"],row:4,col:4,speed:3,x:8,y:7}
            ],
            talk:{
                1:[
                    {face:datalist["m"],name:"[鸣人]",msg:"这是哪里？好美啊。"},
                    {face:datalist["n"],name:"[黑衣忍者甲]",msg:"这里是红树林"}
                ]
            },
            jump:[
                {at:{x:0,y:6},to:"stage01"}
            ]
        }
    };
}

function initScript(){
    map = stage.map;
    mapData = stage.mapdata;
    talkContent = stage.talk;
    charaList = stage.add;
    jumpTo = stage.jump;
    
    backLayer.removeAllChild();
    addScene();
}

这里一共有三个脚本，所以看上去代码比较多。前面136行都是数据的记录，只有后面的initScript是用来初始化场景的。

由于我写这个示例只是为了娱乐一下，所以没有写一句注释（在下实在是太懒了……），为了方便大家理解，我说一下整个游戏的制作过程和设计方式。

首先，我们的游戏主体应该是一像模板样的东西，数据和这些模板分开，要用到数据时，将数据引入然后通过固定的模板实现相同的作用但不同的效果。举一个例子，假设我们这些程序员有一天穿越到了古代，成为了比程序员还苦的炼钢工人（我可没有诅咒大家啊）……为了方便炼铁，工厂给我们准备了几个模子，我们只用将不同的铁水倒进这个模子，然后等它冷却，就能打造出材料不同但造型相同的武器（也不知道古代有没有这种高科技东西）。这样做的好处是快捷和方便修改。假如我们遇到战乱的年代，皇帝老儿要咱们在一个月内做1GB这么多的长枪去抵抗外敌，我们怎么办呢？？这时如果用到这种方法，那我们就只用不断得将铁水倒进模子就可以了。话又说回来，如果模子做得差，那制造出来的东西还是个什么玩意？

现在我们穿越回来，回到高新的IT时代。现在我们要做的差不多和做兵器是一个原理，因此我们在Main.js里写模子，铁水就交给脚本处理吧。

如果说看了半天被搅昏了的同学，那就看一下《html5游戏开发-零基础开发RPG游戏-开源讲座(四)-游戏脚本化&地图跳转》一文吧

说了一堆原理性的话，我们不仿聊一下我们的引擎。其实模子做的好不好最关键就是看材料，如果我们花比皇宫还贵的钱来修这个模子，那我真心觉得没这个必要，因此我们应该把模子作得相对简单。使Main.js中的代码少的一个重要因素就是用到了lufylegendRPG中的LScene类，这个类非常得帅，用法就不多说了，API看了就知道。

API文档：http://www.cnblogs.com/yorhom/archive/2013/06/15/3137789.html

差不多就讲到这里吧，各位可以尽可能地发挥特长，利用该引擎制作一款像样的RPG游戏。

至于源代码嘛，可以下载lufylegendRPG-1.0.0，就在解开压缩包后的rpg_sample文件夹中。