Question regarding a redirect...

http://forums.sonicretro.org/index.php?

If you type in:

19 65 09 17

and then press A+Enter simultaneously, it redirects to a new page.

http://forums.sonicretro.org/cheats/

(for those that don't know 19 65 09 17 is the level select cheat in Sonic the Hedgehog 2)

I was wondering if anyone could explain how that works, as it's damn interesting and i'd like to know how to code something like that!

Thanks!

Ame

 

[Jazz00006]

You'll notice that there is a file http://forums.sonicretro.org/cheats/cheatEngine.js in this file, you have javascript.

The main part of this javascript is

jQuery(document).ready(function () {
    jQuery("body").keydown(function (e) {
        var kc = (e.keyCode == 0) ? e.which : e.keyCode;
        for (var i = 0; i < cheatCodes_C.length; i++) if (cheatCodes_E[i] == 1) {
            if (kc == cheatCodes_C[i][cheatCodes_P[i]][0] || kc == cheatCodes_C[i][cheatCodes_P[i]][1]) {
                cheatCodes_P[i]++;
            } else {
                cheatCodes_P[i] = 0;
            }
            if (cheatCodes_P[i] == cheatCodes_R[i]) playRing();
            if (cheatCodes_P[i] == cheatCodes_C[i].length) {
                cheatCodes_F[i]();
                cheatCodes_E[i] = 0;
                cheatCodes_P[i] = 0;
            }
        }
    });
});

Which translates to: every time a button is pushed on this web page, add it to an array.
Check that array against another, which is a list of the keys you need to press to activate a 'cheat code'



To create a cheat code, first add in an array of character keys and the callback function.

    addCheat([k1, k9, k6, k5, k0, k9, k1, k7, kA, kS], function () {
        window.location.href = 'http://forums.sonicretro.org/cheats/';
    }, 8);

I hope this helps you understand the javascript behind it.

 

You'll notice that there is a file http://forums.sonicretro.org/cheats/cheatEngine.js in this file, you have javascript.

The main part of this javascript is

jQuery(document).ready(function () {
    jQuery("body").keydown(function (e) {
        var kc = (e.keyCode == 0) ? e.which : e.keyCode;
        for (var i = 0; i < cheatCodes_C.length; i++) if (cheatCodes_E[i] == 1) {
            if (kc == cheatCodes_C[i][cheatCodes_P[i]][0] || kc == cheatCodes_C[i][cheatCodes_P[i]][1]) {
                cheatCodes_P[i]++;
            } else {
                cheatCodes_P[i] = 0;
            }
            if (cheatCodes_P[i] == cheatCodes_R[i]) playRing();
            if (cheatCodes_P[i] == cheatCodes_C[i].length) {
                cheatCodes_F[i]();
                cheatCodes_E[i] = 0;
                cheatCodes_P[i] = 0;
            }
        }
    });
});

Which translates to: every time a button is pushed on this web page, add it to an array.
Check that array against another, which is a list of the keys you need to press to activate a 'cheat code'



To create a cheat code, first add in an array of character keys and the callback function.

    addCheat([k1, k9, k6, k5, k0, k9, k1, k7, kA, kS], function () {
        window.location.href = 'http://forums.sonicretro.org/cheats/';
    }, 8);

I hope this helps you understand the javascript behind it.

Thanks for the response Jazz, very helpful. Cheers.