Immagine che cambia secondo la data

[killingzoe]

Immagine che cambia secondo la data

ho un problemino: vorrei che nel mio sito, a seconda della data del server (non del pc dell'utente) cambi un'immagine di sfondo.

Per esempio, il 3 marzo avrò un fiore, il 7 avrò una farfalla etc..

Credo di dover usare getdate ma non riesco a farlo funzionare e in più non so se prenda la data dal server o dal pc (è molto importante perchè l'immagine di sfondo deve cambiare in base a una data fissa).

Quindi credo dovrei fare dei semplici "if date == 24 loadmovie("farfalla.swf"), if date == 25 loadmovie("fiore.swf")..."

Potete aiutarmi?

Grazie

P.S.: Perdonate la mia niubbezza, ma sono alle prime armi, spero di essermi spiegato bene.

[flep]

Ciao e benvenuto nel forum GT

La cosa che necessiti non è affatto semplice in quanto devi recuperare la giusta data dal server.

Ti serve uno script lato server (php o asp o quello che credi) che quando chiamato da Flash ti restituisce la data attuale in formato secondi.

Fatto questo devi lavorare con la classe Date di Actionscript e utilizzando della matematica devi recuperare l'offset dell'orologio della macchina dell'utente, trasformare tutto in millisecondi, fare dei calcoli ed ottenere la data.

[killingzoe]

cacchio..è difficilissimo!

Io però ho già una cosa che può aiutarmi: in pratica ho un contatore che prende i dati dal server..sicuramente in mezzo alla programmazione c'è la data che fa al caso mio..solo che sono proprio all'inizio e non capisco come poterla usare..

Se hai voglia, ti faccio vedere lo script contatore, che online è http://www.whereis107.org/base.html

// stop the timeline
stop();


// define the event date counting down to
// this is constant so it won't need to be
// calculated in the onEnterFrame function below
// currently counting down 'til christmas of 2003
// Date( year, month-1, date [, hour [, minute [, second [, millisecond]]]])
eventDate = new Date(2007, 2, 30, 24, 59);
eventMillisecs = eventDate.getTime();

// define the function used to compare the current date
// with the event date.  This will be set to run every
// frame once the server date has been retrieved
countdown = function(){
    // take the recieved server time and add on the milliseconds
    // calculated from flash that have occurred since that
    // time was recieved (which would match up to what that time
    // would be now if it was again retrieved from the server
    var currentMillisecs = server.time + getTimer();
    
    // the milliseconds between the current time and the
    // time of the event can then be calculated by simply
    // subtracting the current time's milliseconds from the
    // milliseconds of the time of the event
    this.msecs = eventMillisecs - currentMillisecs;
    
    // if the msecs variable is less than 0, that means the
    // current time is greater that the time of the event
    if (this.msecs <= 0){
        // and the event time has been reached!
        // play the next frame for the result of the countdown.        
        play();
        // a return can be used to exit the function since
        // in going to the next frame, there's no need to
        // continue with the remaining operations.
        return;
    }
    
    // if the date hasn't been reached, continue to
    // devise seconds, minutes, hours and days from
    // the calculated milliseconds
    this.secs = Math.floor(this.msecs/1000); // 1000 milliseconds make a second
    this.mins = Math.floor(this.secs/60); // 60 seconds make a minute
    this.hours = Math.floor(this.mins/60); // 60 minutes make a hour
    this.days = Math.floor(this.hours/24); // 24 hours make a second
    
    // make sure each value doesn't exceed the range in
    // which they exist.  Milliseconds, for example, will
    // be shown in a range of 0 - 999.  The modulous
    // operator, or %, well help in that.  Here the values
    // are also turned into strings preparing for the next step
    this.msecs = string(this.msecs % 1000);
    this.secs = string(this.secs % 60);
    this.mins = string(this.mins % 60);
    this.hours = string(this.hours % 24);
    this.days = string(this.days);
    
    // add on leading zeros for all the number values (which are
    // now strings) that aren't 3 or 2 characters long based on the
    // range being used to represent them.  Because mseconds and
    // days have up to 3 characters, a while loop is used to
    // continuously add 0s until they have 3.  Other values which
    // only need 2 leading 0s can get by on a single if check
    while (this.msecs.length < 3) this.msecs = "0" + this.msecs;
    if (this.secs.length < 2) this.secs = "0" + this.secs;
    if (this.mins.length < 2) this.mins = "0" + this.mins;
    if (this.hours.length < 2) this.hours = "0" + this.hours;
    while (this.days.length < 3) this.days = "0" + this.days;

    // finally, display your values.  If you want to put your values
    // in a textField, you can pretty much just stop here and throw them
    // into your textField as desired.  This example, however will go a step
    // further and use images for numbers for each numerical value in the
    // countdown to the desired date.
    
    // So, for that, loop through all the movies in this counter clip using the
    // evaluateFrameFrom prototype method on each. A single check for a
    // _parent variable is used to make sure the property found in a for
    // loop is a movieclip and is within the timeline of this counter clip.
    // TextFields and buttons would also be true here, but since the contents
    // within counter are strictly those numbers movieclips, we won't have to
    // be concerned with such complications.  The only movieclips in this counter
    // clip are the numbers movieclips with the frames of the imagery making up
    // the numbers of 0-9.
    for(movie in this){
        if (this[movie]._parent == this) this[movie].evaluateFrameFrom(this);
    }
};

// this function is a MovieClip.prototype meaning its available to be used by
// all movieclips.  It's a sneaky function that saves a lot of work by using
// name each numbers movieclip in the counter movieclip to determine which value
// it needs to display based on the times derived from the previous 
// calculations of the onEnterFrame. What it does is seperates a movieclip's
// _name into a variable word and a number.  The variable word will represent
// the variable to look up a value for in the passed variableClip and the
// number will be used to get a character from that value (a string) which
// represents which number this movieclip should display.
MovieClip.prototype.evaluateFrameFrom = function(variableClip){
    // split this _name into an array of 2 values seperated by an underscore
    var nameArray = this._name.split("_");
    // the first value represents what variable in variableClip (counter clip)
    // this movieclip is used to represent whether it be mins or hours etc.
    var numberSet = variableClip[nameArray[0]];
    // next a number representing which character in that first value this
    // movieclip should display.  this will be between 0 and 2 (any one of
    // three values).  number() is used to force it to be a number value.
    var character = number(nameArray[1]);
    // a frame number can then be derived from the value of the numberset
    // variable based on the character defined by character.  number() is
    // used to force it to a number value and 1 is added to offset the
    // frame value by one since 0 is at frame 1 and 1 at frame 2 etc.
    var frame = 1 + number(numberSet.charAt(character));
    // if the movieclip is not already at the frame, move it there!
    if (this._currentframe != frame) this.gotoAndStop(frame);
};

// an example of the above function in action would be for a movieclip
// with the name "days_1".  days_1 is seperated into an array by dividing
// the name by its "_" character giving "days" (nameArray[0]) and "1" (nameArray[1]).
// The value of days is then retrieved from the passed variableClip using
// associative array ssntax and is set to numberset.  The value of days in variableClip
// would be a string something along the lines of "045".  character is then used
// to get which of those 3 values this movieclip is to represent. It is just
// nameArray[1] turned into a number or "1" to 1.  So, charAt(1) of "045" would
// be 4.  Turn that into a number and add one and you get frame 5 where the image of
// the 4 is located.  The movieclip, days_1, is then played to that frame to show it.

// make a new loadVars object to get the server date
server = new LoadVars();
server.onLoad = function(ok){
    // check for loading success
    if (!ok) return trace("Server error! Unable to obtain date from server");
    // if ok, assign countdown to run every frame for counter
    counter.onEnterFrame = countdown;
    // show the counter clip as it was hidden before the countdown
    counter._visible = true;
    // offset the recieved server time by the current value of
    // getTimer since getTimer starts at 0 when the movie starts.  By
    // the time the server time loads, getTimer will be some higher
    // value. This accounts for the extra time added on from 
    // getTimer in countdown every frame. Plus, since time() in 
    // php returns seconds and not milliseconds (which is used here)
    // *1000 is added to increase its value to represent milliseconds
    this.time = Number(this.time)*1000 - getTimer();
};
// load in the time from a php file (or any other server-side resource)
// the value we want from the server is the milliseconds representation
// of the current time as the server sees it.
server.load("gettime.php");
/* gettime.php:

<?php
echo "time=" . time();
?>

*/

// now, since the counter clip has to wait for the time to be loaded, 
// its a good idea not to show it act all wierd as it has nothing to control
// how it plays its numbers.  We'll just hide it until the onLoad
counter._visible = false;

if (this.days == 29) function() {
     loadMovie("creatures.swf", _root.mappa);
     };
```Se potessi aiutarmi, te ne saremo tutti grati! 
Siamo un gruppo di giovani artisti che organizzano una mostra d'arte libera e autogestita a Milano. La scorsa edizione è stata questa [www.whereis101.org](http://www.whereis101.org)

Grazie comunque del tempo che mi dedichi :)

[flep]

Guarda cosa succede se metti queste 2 righe di codice :

var my_date:Date=new Date(this.time);
trace(my_date);

```dopo questa riga di codice(la n°147):

this.time = Number(this.time)*1000 - getTimer();