汉诺塔JS

var delay = 200; //in milliseconds

    var	drag=false;
    var objDisk=null;
    var x = 0;
    var y = 0;
    var disksOnTower1 = new Array(null,null,null,null,null,null,null,null);
    var disksOnTower2 = new Array(null,null,null,null,null,null,null,null);
    var disksOnTower3 = new Array(null,null,null,null,null,null,null,null);
    var disksOnTowers = new Array(disksOnTower1,disksOnTower2,disksOnTower3);
    var offsetleft = 30;
    var offsettop = 30;
    var offsettower = 20;
    var offsethoriz = 30;
    var basetop = 0;
    var diskheight = 0;
    var midhoriztower = 0;
    var indexTo=1;
    var indexFr=1;
    var movectr=0;
    var gameOver=false;
    var prevIndex=0;
    var zindex = 0;
    var currTower=1;
    var prevTower=1;
    var demo=false;
    var arrFr = new Array(255);
    var arrTo = new Array(255);
    var idx = 0;
    var pos = 0;
    var t=null;
    var stop=false;

    
    function init(){
        if (document.getElementById){
        	var diskno = document.hanoi.diskno;

            diskno.options.selectedIndex = 0;
            drawTowers();
            drawDisks(parseInt(diskno.options[diskno.options.selectedIndex].text));		
        }
    }
    
    function initVars(){
        for (var i=0;i=1;i--){
        	disk = document.getElementById("disk"+i);
			disk.style.zIndex=++zindex;	
            if (i<=disknum){
                disk.style.left=lefttower1+midhoriztower-parseInt(disk.style.width)/2+"px";
                disk.style.top=disktop-diskheight-1+"px";
                disktop = parseInt(disk.style.top);
                disksOnTowers[0][i-1]=disk;
            }            
            else {
                disk.style.left="-250px";
                disk.style.top="-250px";
                disksOnTowers[0][i-1]=null;
            }
        }       
        f.minmove.value=f.diskno.options[f.diskno.options.selectedIndex].value;
        f.yourmove.value=0;
    }
    
    function newGame(obj){
        if (movectr>0 && !gameOver && !stop){
            if (confirm("Current game will be aborted, would you like to continue?")){
                initVars();
                drawDisks(parseInt(obj.options[obj.options.selectedIndex].text));
            }
            else document.hanoi.diskno.options.selectedIndex=prevIndex;
        }
        else {
            initVars();
            drawDisks(parseInt(obj.options[obj.options.selectedIndex].text));
        }
    }
    
    function initializeDrag(disk,e){
    	if (!e) e=event;
        if (stop){
            swal("警告", "不能在点击'stop'按钮之后在继续执行移动盘子的操作！！", "warning");
            //alert("You cannot continue solving the puzzle after clicking the 'Stop' button.\nClick 'Restart' button or select no. of disks to continue playing.");
            return;
        }
        indexFr = indexTo;
        if (disk.id!=disksOnTowers[indexFr-1][0].id || gameOver || demo) return;
        objDisk=disk;
        x=e.clientX;
        y=e.clientY;
        tempx=parseInt(disk.style.left);
        tempy=parseInt(disk.style.top);
        document.onmousemove=dragDisk;
    }
    
    function dragDisk(e){
        if (!e) e=event;
        zindex++;
        drag=true;
        var posX = tempx+e.clientX-x;
        var posY = tempy+e.clientY-y;
        var objTower1 = document.getElementById("tower1");
        var objTower2 = document.getElementById("tower2");
        var objTower3 = document.getElementById("tower3");
        var tower1Left = parseInt(objTower1.style.left);
        var tower2Left = parseInt(objTower2.style.left);
        var tower3Left = parseInt(objTower3.style.left);
        var tower3Width = parseInt(objTower3.style.width);
        
        objDisk.style.zIndex=zindex;
        objDisk.style.left=posX+'px';
        objDisk.style.top=posY+'px';        
        
        if (e.clientX>=document.body.clientWidth-10 || e.clientY>=document.body.clientHeight-5 || e.clientX==5 || e.clientY==5){ //outside available window
            indexTo=indexFr;
            dropDisk(objDisk);
        }
        else if ( //in the vicinity of tower 3
            (tower3Left<=posX) && 
            (tower3Left+tower3Width>=posX) && 
            (parseInt(objTower3.style.top)+parseInt(objTower3.style.height)>posY)
            ){
            indexTo=3;
        }
        else if ((tower2Left<=posX) && (tower2Left+tower3Width>=posX)){ //in the vicinity of tower 2
            indexTo=2;
        }
        else if ((tower1Left<=posX) && (tower1Left+parseInt(objTower1.style.width)>=posX)){ //in the vicinity of tower 1
            indexTo=1;
        }
        else indexTo = indexFr;
        return false;
    }

    function dropDisk(disk){
    	var f=document.hanoi;
        document.onmousemove=new Function("return false");
        if (!drag) return;
        var gameStatus=false;
        var topDisk = disksOnTowers[indexTo-1][0];
        if (indexFr==indexTo){
            getNewTop(indexFr,null);
            pushDisk(disk,indexFr);	//put disk back to original tower
            getNewTop(indexFr,disk);
        }
        else if (topDisk==null) {
            pushDisk(disk,indexTo);
            getNewTop(indexFr,null);
            getNewTop(indexTo,disk);
            movectr++;
            currTower=indexTo;
            prevTower=indexFr;
            f.btnUndo.disabled=false;
        }
        else if (parseInt(disk.style.width)minmove) msg="\nYou can do better than that."
            else msg="";
            //alert("Game Over !!!"+msg);
            swal({   title: "干的漂亮！！！!",   text: msg,   imageUrl: "images/thumbs-up.jpg" });
            gameOver=true;
        }
        return;
    }      
    
    function checkStatus(){
        var gameStat = false;
        var disks=0;
        for (var i=0;i=1;i--){
                disksOnTowers[index-1][i]=disksOnTowers[index-1][i-1];
            }
            disksOnTowers[index-1][0]=disk;
        }
    }
    
    function solve(btn){
        if (btn.value=="Solve"){
            if (movectr>0 && !gameOver && !stop)
                if (!confirm("Current game will be aborted, would you like to continue?")) return;
            btn.value="Stop";
            initVars();
            stop=false;
            demo=true;
            var f=document.hanoi;
            f.btnIns.disabled=true;
            f.btnRes.disabled=true;
            f.btnUndo.disabled=true;
            disknum = parseInt(f.diskno.options[f.diskno.options.selectedIndex].text);
            drawDisks(disknum);
            getMoves(0, 2, 1, disknum); 
            t=window.setTimeout("moveDisk()",delay);
        }
        else {
            if (t) {
                window.clearTimeout(t);
                btn.value="Solve";
                frm.btnIns.disabled=false;
                frm.btnRes.disabled=false;
                t = null;
                stop=true;
                demo=false;
            }
            
        }
    }
    
    function moveDisk(){
        frm = document.hanoi;
        disk=disksOnTowers[arrFr[pos]][0];
        pushDisk(disk,arrTo[pos]+1);
        getNewTop(arrFr[pos]+1,null);
        getNewTop(arrTo[pos]+1,disk);
        movectr++;
        frm.yourmove.value=movectr;
        pos++;
        if (movectr 1) {
            getMoves(from, empty, to, numDisk - 1);
            arrFr[idx] = from;
            arrTo[idx++] = to;
            getMoves(empty, to, from, numDisk - 1);
        }
        else {
            arrFr[idx] = from;
            arrTo[idx++] = to;
        }
    }

    
    function unDo(btn){
        disk=disksOnTowers[currTower-1][0];
        pushDisk(disk,prevTower);
        getNewTop(currTower,null);
        getNewTop(prevTower,disk);
        movectr--;
        document.hanoi.yourmove.value=movectr;
        btn.disabled=true;
    }
    
    function displayIns(){
        var msg = "你要将所有的盘子从TOWER 1移动到TOWER 3\n";
        msg += "你每次只能移动一个盘子。\n";
        msg += "游戏最重要的规则是大的盘子不能放在小的盘子上面！";
        // var msg="Try to move all the disks from TOWER 1 to TOWER 3.\n";
        // msg+="You may only move one disk at a time.\n";
        // msg+="You must never allow a bigger disk to go on top of a smaller disk.";
        //alert(msg);
        swal({
        title: "汉诺塔游戏规则",
        text: msg,
        imageUrl: 'images/capitaine.png'
    });
    } 

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