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JavaScript - Javascript Games, Baby!
Not content with using Javascript for practical purposes, I decided to "engineer" and "physics engine" for a "game". Get ready for seconds of fun. Paste this bad boy into a new HTML file and hold on to your hats!
Code: <!DOCTYPE HTML><html><head><style>#guy{position: absolute;width: 20px;height: 20px;background: #F00;}#playingArea{position: absolute;border: 1px solid black;border-bottom: 5px solid brown;width: 400px;height: 400px;margin: 50px;}</style><script type="text/javascript">var ground = 380;var guyX = 0;var guyY = 0;var guy;var timer = 0;var jumping = false;var jumper = 10;function render(){moveGuy();}function keyPress(e){if(!e)e = window.event;if(e.keyCode == 37 && guyX>0){guyX -= 4;guy.style.left = guyX+"px";}if(e.keyCode == 39 && guyX<380){guyX += 4;guy.style.left = guyX+"px";}if(e.keyCode == 38 && guyY>=ground){jumping = true;}if(jumping == true){guyY -= jumper;jumper--;guy.style.top = guyY+"px";if(guyY >= ground){jumper = 10;guyY = ground;jumping = false;}}}function moveGuy(){if(guyY < ground){guyY += 4;guy.style.top = guyY+"px";}}function start(){render();timer = setTimeout("start()",30);}function init(){guy = document.getElementById("guy");window.onkeypress = keyPress;start();}</script></head><body onload="init()"><div id="playingArea"><div id="guy"></div></div></body></html>
Kidding aside, anyone here ever actually make any "games" in Javascript? Or know of any cool ones? Similar TutorialsI am going to be creating a few games (possibly up to 10) that are very basic javascript games. Most of them will be singleplayer, but 2 will be multiplayer. Could you guys tell me what you think the difficulty of making these will be? If they are too hard, they aren't really worth it. 1. balls fall and you try to avoid them. 2. tic tac toe multiplayer 3. something like "doodle jump" but where you move the keys around to move and you bounce off of platforms (would have to be randomly generated). sounds pretty difficult so i doubt ill do this one unless someone wants to help.. 4. 4 in a row multiplayer I will add more later. If you have any ideas for simple singleplayer games, please let me know! Thanks. I have a website and I am looking at putting a few quality games on it. I was thinking an online poker game, rpg, and a few others... I want a gooed mix of games put again I am not a gaming website. The main feature that I am trying to get is that when a customer of the site plays the games I would like them to earn credits. The customer at the end of the month with the most credits will receive a cash prize. Also maybe we could have a leaderboard or something too so that other customers can see that it is actually legit. If you have any resources thath you can think of or you know of something fairly close to what I am talking about please let me know.
i am making a web site for a flash games i have some games with .swf extensions and .exe extensions how ever i need to make the games be play online the .swf doing fine but with .exe i can't, so.... did or there is a code with activeX can do that? cuz' i don't know how i did or make work with microsoft virtual basic or c+ or class thing i take a look on this page http://www.codeproject.com/KB/cs/Cre...324#xx3536324x but i didn't do well help me please this so important for me.. please I want to have another go at Javascript. I have several books on the subject but I find that my eyesight is a major problem. Therefore I want to try an on-line solution, preferably free. I have Googled, but there are so many that I am almost dizzy with the choices. Perhaps someone could recommend one. Not too fussy visually. My knowledge is VERY basic. Frank Hello! I am trying to find a script that allows you to open multiple browser tabs and then close each of those tabs, either one by one or all at once. Does anyone know how to do this please? Thanks so much for your help. Does anyone know how to make URL links that use Javascript still work when users have Javascript disabled on their browser? The only reason I'm using JS on a URL is because my link opens a PDF file, and I'm forcing it not to cache so users have the latest version. I tried the <script><noscript> tags, but I'm not sure if I'm using it correctly, as my URL completely disappears. Below is my HTML/Javascript code: <p class="download"> <script type="text/javascript">document.write("<span style=\"text-decoration: underline;\"><a href=\"javascript:void(0);\" onclick=\"window.open( 'http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf?nocache='+ Math.floor( Math.random()*11 ) );\" >The Child Magazines Media Kit</a></span> (PDF 1 MB) ");</script> <noscript><span style="text-decoration: underline;"><a href="http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf" >The Child Magazines Media Kit</a></span> (PDF 1 MB)</noscript> </p> Thanks for any help, Michael Hi, I have the following code snippet: test.html ====== <script language="javascript" type="text/javascript"> var testVariable = "test"; </script> <script language="javascript" type="text/javascript" src="test.js"> </script> test.js ===== var testVariable = window.top.testVariable; In firefox, I'm able to access testvariable defined within test.html in test.js. But in chrome, test.js couldnot get the window.top.testVariable field defined in test.html. Can any one please let me know how i can make it work in chrome?. Am i missing something here?. Hi Guys, I am new at JavaScript and start to do some tutorials.What I am trying to do here is prompting user to input a name and if the name was valid the page(document) will display with all objects like the button.But if user enter a wrong name then the button will be disabled! I create the following code but it did not work <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>New Web Project</title> <script language="JavaScript" type=""> function changeColor(){ document.bgColor = "Gray"; } </script> </head> <body> <script language="JavaScript" type="text/javascript"> var person = ""; person = prompt('What is Your Name:'); if (person == "Foo") { document.write("<h1 />Welcome " + person); document.bgColor = "Yellow"; } else { document.write("<h1 />Access Denied!!!!"); document.bgColor = "Red"; document.getElementById("gree").disabled = true; } </script> <div> <p/><input id="gree" type="button" value="Gray " onClick="changeColor();"> </div> </body> </html> as you can see I used the: document.getElementById("gree").disabled = true; but it did not work , could you please give an idea how I can solve this problem? Thanks Hi Guys I am trying to modify the functionality of my page. I want to be able to activate this piece of code using another javascript function. This is the code I want to activate: Code: <script type="text/javascript"><!--
$('#button-cart').bind('click', function() {
$.ajax({
url: 'index.php?route=checkout/cart/update',
type: 'post',
data: $('.product-info input[type=\'text\'], .product-info input[type=\'hidden\'], .product-info input[type=\'radio\']:checked, .product-info input[type=\'checkbox\']:checked, .product-info select, .product-info textarea, .date_data input[type=\'text\']'),
dataType: 'json',
success: function(json) {
$('.success, .warning, .attention, information, .error').remove();
if (json['error']) {
if (json['error']['warning']) {
$('#notification').html('<div class="warning" style="display: none;">' + json['error']['warning'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.warning').fadeIn('slow');
}
for (i in json['error']) {
$('#option-' + i).after('<span class="error">' + json['error'][i] + '</span>');
}
}
if (json['success']) {
$('#notification').html('<div class="success" style="display: none;">' + json['success'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.success').fadeIn('slow');
$('#cart_total').html(json['total']);
$('html, body').animate({ scrollTop: 0 }, 'slow');
}
}
});
});
//--></script>
And this is how I want the format of the function to be: function testsession() { if there is a session called 'hiredate' { activate the script above } else { var el = document.getElementById("product_data"); } } I just dont know how to write this in javascript Could you help me if possible please I want to insert this js snippet Code: function addText(smiley) {
document.getElementById('message').value += " " + smiley + " ";
document.getElementById('message').focus();
return false;
}
to a loaded iframe with name&id chtifrm. I can access it & change embed something in its html via using something like: Code: $(parent.chtifrm.document.body).append('<div id=\"smly\" style=\"cursor:pointer;float:left;top:200px;display:none;position:absolute;\"><\/div>');
.... Code: parent.chtifrm.document.getElementById('chatbox_option_disco').style.display == 'none'
but how do I insert js in the head of loaded iframe? I got an index.php Code:
<html>
<form action="bacakomik.php" method='post'>
<select name="kodekomik">
<option value='../komik1/|23'>Judul Komik1</option>
<option value="../komik2/|20">Judul Komik2</option>
<option value="../komik3/|10">Juduk Komik3</option>
<option value="../komik4/|20">Judul Komik4</option>
</select>
<input type="submit" />
</form>
<?php
echo ('<select>');
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
echo ('</select>');
?>
</html>
As you can see, each of the option brings specific value "../komik1/|23" komik1 is a directory | is a delimiter 23 is the pages in one chapter and can be considered also as how many images are there on a specific directory This is my bacakomik.php Code: <?php
$dirkomik = $_POST['kodekomik'];
$exploded = explode("|", $dirkomik);
echo ($exploded[0]); //picture directory
echo ("<br>");
echo ($exploded[1]); //total page in the comic
$pagecount = (int)$exploded[1];
//Take last posted value, process it right away
echo ('<FORM name="guideform"> ');
echo ('<select name="guidelinks">');
$i=1;
do {
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
$i= $i+1;
}while($i <= $pagecount); //Printing option and select
echo ("</select>");
?>
<input type="button" name="go" value="Go!" onClick="document.getElementById('im').src=document.guideform.guidelinks.options[document.guideform.guidelinks.selectedIndex].value+'.png';"> </FORM>
<img src="img0.jpg" id="im">
With the current code on bacakomik.php, I only can change the img src of id "im" in the same directory only. What I want is that the Javascript could "add" the "$exploded[0]" variable so that the picture can be loaded from different directory. Anyone can do this? I believe that the fix should be somewhere on input tag inside OnClick, or do you know where? Anyway, I found this on the net http://p2p.wrox.com/php-faqs/11606-q...avascript.html Please help me to those who can... Hey, I've got to make the values of some textboxes change the co-ordinates of my sprite on a canvas and havent a clue on how to do it, Here is my form with the two textboxes and submit button: <form> x: <input type="text" name="x" /><br /> y: <input type="text" name:"y" /><br /> <input type="submit" value="Submit"/><br /> </form> And i need it so that they change the values of these: //this shows where my sprite will start on the canvas var block_x; var block_y; searched the internet for hours and cant really find anything i understand or works. any help is much appreciated All -- I have a JavaScript config file called gameSetting.js which contains a bunch of variables which configures a particular game. I also have a shared JavaScript library which uses the variables in gameSetting.js, which I include like so: <script type="text/javascript" src="gameSetting.js" ></script> <script type="text/javascript" src="gameLibrary.js" ></script> In gameSetting.js I have: $(document).ready(function() { // call some functions / classes in gameLibrary.js } in Firefox, Safari, and Chrome, this works fine. However, in IE, when it's parsing gameSetting.js, it complains that the functions that live in gameLibrary.js aren't defined. When it gets to parsing gameLibrary.js, the variables in gameSetting.js are reported as not being defined. I've tried dynamically bootstrapping the gameLibrary file using this function in document.ready for dynamic load... $.getScript("gameLibrary.js"); However, the same problem still happens in IE, where when it parses the files individually it's not taking into context the file/variables that came before, so it's not an out of load order problem. My options a 1) collapsing all the functions in gameLibrary.js and variables in gameSetting.js into one file. However, this is not practical because this is dealing with literally hundreds of games, and having a gameLibrary.js in ONE location for ONE update is what makes most logical sense. 2) figure out a way to get this to work where variables in file1 are accessible to file2 in IE (as it seems they are in other browsers). jQuery seems to be able to have multiple plugins that all refer to the based jQuery-1.3.2.js, so I know there is a way to get this to work. Help appreciated. Nero I wrote a log function that took note of various function calls. Thinking that functions are first class objects, and objects have properties, I made the name of each logged function a property of that function, e.g., brightenInnerPara.name = "brightenInnerPara"; Every browser I tried (Firefox, MSIE, Opera, Chrome, Safari) accepted the assignment, no problem. In Firefox and MSIE, the result was what I wanted: brightenInnerPara.name == "brightenInnerPara" But in the others, the result was: brightenInnerPara.name == null Question 1. Which Javascript is correct here? I favor Firefox and MSIE, not merely because they were willing to give me what I wanted, but also because it makes no sense to accept an assignment statement without throwing an error and then give it a null semantics, like Chrome, Opera, and Safari did. I found a workaround, using assignments like this: brightenInnerPara.prototype.name = "brightenInnerPara"; To my surprise, that worked in every browser. But I don't know why. It seems that such assignments are enough to cause each function to have its own distinct prototype. Question 2. Just how inefficient is my workaround, and why does it work? Hey everyone, could anyone help me with this code please? Code: <script language ="javascript">
function ageCalculator()
{
var day = parseInt(document.forms[0].inputdate.value);
var month = (parseInt(document.forms[0].inputmonth.value)-1);
//this is because javascript thinks of january as month 0, so we need to minus the
input month to work e.g december in javascript is month 11.
var year = parseInt(document.forms[0].inputyear.value);
var year;
var yourage;
var date = new Date();
thisday = now.getDate();
thismonth = (now.getMonth());
thisyear = (now.getFullYear());
{ if ((thismonth > month) || (thismont == month & thisday>=year))
{yourage = year}
else {yourage = year + 1}
alert("As of, "+now+' \n'+", you a " +(thisyear - yourage) + " years
old");
}
}
</script>
<form><center>
Enter your day of birth <input type="text" name="inputdate" size="2"><br/>
Enter your birth Month(1-12)<input type="text" name="inputmonth" size="2"><br/>
Enter your 4 digit birth year<input type="text" name="inputyear" size="4" ><br/>
<input type="submit" value="submit" onClick="ageCalculator()"><input type="reset"
value="reset"></center>
</form>
i'm pretty new to code and this has got me stumped any help would be appreciated, thanks Hi everyone, can someone please help me to find a way to rewrite this code function evenorodd( form ) { var x = new Number( form.x.value ); if( isNaN( x ) || x == "" ) { alert( "Not a number or no value entered" ); return ""; } for( var i = 0; i <= x; i++ ) ( i % 2 == 0 ) ? alert( i + " is even!" ) : alert( i + " is odd!" ); } the purpose is to show an alert box with a odd or even number Thanks in advanced! I need help i want to make an area where it will show three boxes with news in them but it has arrows either side to slide to older and newer stories. I am very new to JavaScript and just wanted a push in the write direction to is this something that you would do in this lanuage or jQuery or something a like. Thanks I am new to this forum and new to JavaScript. I am currently taking a class called Web Systems, and for one of the assignments, we need to create a Web page that allows a user to enter a number into a text box, click on a button to calculate shipping, and have a window pop up with the total. There are specifications, but those are not my problem. Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Calculate the Shipping</title>
<script type = "text/javascript">
/* <![CDATA[ */
var price = document.shipping.purchPrice.value;
var total;
function calculateShipping(shipping) {
if (price <= 25) {
total = price + 1.5;
window.alert("Your total is: $"+ total);
}
if (price > 25) {
var shipHand = price * 0.1;
total = price + shipHand;
window.alert("Your total is: $"+ total);
}
}
/* ]]> */
</script>
</head>
<body>
<form id="shipping" method="get" action="">
<label>Purchase Price: </label><input type="text" name="purchPrice" value=""><br>
<input type="button" name="shipHandling" value="Calculate Shipping and Handling" onclick="calculateShipping(this.shipping)">
</form>
</body>
</html>
The alert windows will not pop up. I tried listing the code outside of the if-else statement, but then the total becomes undefined. I have been working at this for a day now. I want to be able to understand my mistake, here, so if someone would be able to explain it to me on a very basic level, I would appreciate it greatly. Hi guy's Not sure if what i want to do is possible, i am a very basic computer user and any help would be great. i have a relay that is conect to my router and if i type the following into the address bar it turns it on for 2 seconds. "http://192.168.1.68/state.xml?relayState=2" What i would love to do is be able to add a book mark which once selected it fires off the above string and closes the window without a prompt, is this possible??? i have spent hours and hours and seem to be going nowhere. Thanks for all your help Daniel I'm new and am not sure if this is the right section but this was my assignment for my intro to programming class. I was absent the day of the lesson and didn't understand much, so this is what I have. jsfiddle I don't know how to put more than one phrase in the alert box, how to keep a running total of the numbers entered & I can't seem to get a counter to work on the second button. Please and Thank you for any help. |
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