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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>
  • javascript
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.

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