javascript - Moving image across the screen - Stack Overflow

Am a beginner in html5 and am facing this problem in a simple program to move an image across the scree

Am a beginner in html5 and am facing this problem in a simple program to move an image across the screen. Its a simple pacman program where i used two images. One is a pacman with mouth open and other with mouth closed When i tried to mov it across the screen towards right and then it has to return to its initial position. It tried many ways but none works. It moves only once for a step and for the next step it is static. It will be really helpful if anyone could solve this

<html>
<head>
<SCRIPT>
    var timer = setInterval(Run,500);
    flag = 1;
    function Run(){
    img1 = document.getElementById("PacMan");
    var init=0;
    var x = 0; 
    var dest_x = 800;  
    var interval = 10; 
    if(x<dest_x) 
        x = x + interval; 
        img1.style.left = x+"px";
    if (x+interval < dest_x)
        img1.style.left = init+"px";
    if(flag ==1){
        img1.src = "PacMan2.png";
        flag=0;

    }
    else {
        img1.src = "PacMan1.png";
        flag=1;
    }
    }
</SCRIPT>
</head>
<body>

<img id="PacMan" src = "PacMan1.png" onClick=clearInterval(timer)
 style="position:absolute"> </img>
</body>
</html>

Am a beginner in html5 and am facing this problem in a simple program to move an image across the screen. Its a simple pacman program where i used two images. One is a pacman with mouth open and other with mouth closed When i tried to mov it across the screen towards right and then it has to return to its initial position. It tried many ways but none works. It moves only once for a step and for the next step it is static. It will be really helpful if anyone could solve this

<html>
<head>
<SCRIPT>
    var timer = setInterval(Run,500);
    flag = 1;
    function Run(){
    img1 = document.getElementById("PacMan");
    var init=0;
    var x = 0; 
    var dest_x = 800;  
    var interval = 10; 
    if(x<dest_x) 
        x = x + interval; 
        img1.style.left = x+"px";
    if (x+interval < dest_x)
        img1.style.left = init+"px";
    if(flag ==1){
        img1.src = "PacMan2.png";
        flag=0;

    }
    else {
        img1.src = "PacMan1.png";
        flag=1;
    }
    }
</SCRIPT>
</head>
<body>

<img id="PacMan" src = "PacMan1.png" onClick=clearInterval(timer)
 style="position:absolute"> </img>
</body>
</html>
Share Improve this question edited Mar 25, 2013 at 11:27 Rob 15.2k30 gold badges48 silver badges73 bronze badges asked Mar 25, 2013 at 10:52 PreethiPreethi 651 silver badge6 bronze badges 1
  • 2 In x + interval you add interval always to zero; First get current div position. – Damian0o Commented Mar 25, 2013 at 11:06
Add a ment  | 

4 Answers 4

Reset to default 4

Try to move

var init=0;
var x = 0;
var dest_x = 800;
var interval = 10;

before function Run(){.

Now you overwrite results with initial data.

 var timer = setInterval("Run()",500);

you missed some mas!

Try to read current pacMan position with

var x = img1.offsetLeft;

In my opinion, you have to make this using Canvas (view the example on MDN) and JavaScript.

发布者:admin,转转请注明出处:http://www.yc00.com/questions/1745550157a4632538.html

相关推荐

  • javascript - Moving image across the screen - Stack Overflow

    Am a beginner in html5 and am facing this problem in a simple program to move an image across the scree

    4小时前
    20

发表回复

评论列表(0条)

  • 暂无评论

联系我们

400-800-8888

在线咨询: QQ交谈

邮件:admin@example.com

工作时间:周一至周五,9:30-18:30,节假日休息

关注微信