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• Determining Best Table Structure for MySQL Performance

  - by Joe Majewski

  I'm working on a browser-based RPG for one of my websites, and right now I'm trying to determine the best way to organize my SQL tables for performance and maintenance. Here's my question: Does the number of columns in an SQL table affect the speed in which it can be queried? I am not a newbie when it comes to PHP or MySQL. I used to develop things with the common goal of getting them to work, but I've recently advanced to the stage where a functional program is not good enough unless it's fast and reliable. Anyways, right now I have a members table that has around 15 columns. It contains information such as the player's username, password, email, logins, page views, etcetera. It doesn't contain any information on the player's progress in the game, however. If I added columns for things such as army size, gold, turns, and whatnot, then it could easily rise to around 40 or 50 total columns. Oh, and my database structure IS normalized. Will a table with 50 columns that gets constantly queried be a bad idea? Should I split it into two tables; one for the user's general information and one for the user's game statistics? I know I could check the query time myself, but I haven't actually created the tables yet and I think I'd be better off with some professional advice on this important decision for my game. Thank you for your time! :)

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• Undefined javascript function?

  - by user74283

  Working on a google maps project and stuck on what seems to be a minor issue. When i call displayMarkers function firebug returns: ReferenceError: displayMarkers is not defined [Break On This Error] displayMarkers(1); <script type="text/javascript"> function initialize() { var center = new google.maps.LatLng(25.7889689, -80.2264393); var map = new google.maps.Map(document.getElementById('map'), { zoom: 10, center: center, mapTypeId: google.maps.MapTypeId.ROADMAP }); //var data = [[25.924292, -80.124314], [26.140795, -80.3204049], [25.7662857, -80.194692]] var data = {"crs": {"type": "link", "properties": {"href": "http://spatialreference.org/ref/epsg/4326/", "type": "proj4"}}, "type": "FeatureCollection", "features": [{"geometry": {"type": "Point", "coordinates": [25.924292, -80.124314]}, "type": "Feature", "properties": {"industry": [2], "description": "hosp", "title": "shaytac hosp2"}, "id": 35}, {"geometry": {"type": "Point", "coordinates": [26.140795, -80.3204049]}, "type": "Feature", "properties": {"industry": [1, 2], "description": "retail", "title": "shaytac retail"}, "id": 48}, {"geometry": {"type": "Point", "coordinates": [25.7662857, -80.194692]}, "type": "Feature", "properties": {"industry": [2], "description": "hosp2", "title": "shaytac hosp3"}, "id": 36}]} var markers = []; for (var i = 0; i < data.features.length; i++) { var latLng = new google.maps.LatLng(data.features[i].geometry.coordinates[0], data.features[i].geometry.coordinates[1]); var marker = new google.maps.Marker({ position: latLng, title: console.log(data.features[i].properties.industry[0]), map: map }); marker.category = data.features[i].properties.industry[0]; marker.setVisible(true); markers.push(marker); } function displayMarkers(category) { var i; for (i = 0; i < markers.length; i++) { if (markers[i].category === category) { markers[i].setVisible(true); } else { markers[i].setVisible(false); } } } } google.maps.event.addDomListener(window, 'load', initialize); </script> <div id="map-container"> <div id="map"></div> </div> <input type="button" value="Retail" onclick="displayMarkers(1);">

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• PNG's In Mac on Java cause massive CPU usage

  - by alexganose

  Hey, I've been having this problem for a while now and I was hoping someone could help. I make small games using Java on Mac OSX 1.6.3 and if I use PNG's as the image format my CPU usage by Java skyrockets to say 50% (on a very small 2D game). However if I use GIF as the format my CPU usage by Java stays constant at 10% which is reasonable. What is causing this problem?? It occurs on every game I develop using PNG's so I always just switch to GIF's. The problem is now that i need to use a PNG for its variable alpha properties rather than just plain transparency. This is not available using GIF's. The problem is present on Java SE 6 and previous versions. I am using an early 2009 Mac Book Pro 15". The problem does not occur on a Windows PC running the same game. The CPU usage due to Java using PNG's on a Windows PC (I have tried XP, Vista and 7) is always constantly low at ~10%. Any help would be greatly appreciated. Thanks :)

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• NSMutableArray accessing issue.

  - by Danegraphics

  I've searched and have no answer. I've created an NSMutableArray and am getting an EXC_BAD_ACCESS error in one place of access. Here. This is declaring in the .h file: NSMutableArray *buttons; ... @property (nonatomic, retain)NSMutableArray *buttons; And this is the synthesizing and implimenting: @synthesize buttons; ... - (id)init { self = [super init]; if(self != nil) { buttons = [[NSMutableArray alloc] init]; } return self; } ... -(void)addButtonWithImage:(Image*)image { Image *button = image; [buttons addObject:button]; [button release]; } ... -(void)replaceButtonAt:(int)num with:(Image*)image { Image *button = image; [buttons replaceObjectAtIndex:num withObject:button]; <<===EXC_BAD_ACCESS [button release]; } But when I use this: -(void)renderButton:(int)num atPoint:(CGPoint)point center:(BOOL)center{ Image *button = [buttons objectAtIndex:num]; [button renderAtPoint:point centerOfImage:center]; } It works

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• Using "margin: 0 auto;" in Internet Explorer 8

  - by stusmith

  I'm in the process of doing some advance IE8 testing, and it seems that the old technique of using "margin: 0 auto;" doesn't work in all cases in IE8. The following piece of HTML gives a centered button in FF3, Opera, Safari, Chrome, IE7, and IE8 compat, but NOT in IE8 standard: <div style="height: 500px; width: 500px; background-color: Yellow;"> <input type="submit" style="display: block; margin: 0 auto;" /> </div> (As a work-around I can add an explicit width to the button). So the question is: which browsers are correct? Or is this one of those cases where the behaviour is undefined? (My thinking is that all the browsers are incorrect - shouldn't the button be 100% width if it's "display: block"?) UPDATE: I'm being a dunce. Since input isn't a block-level element, I should have just contained it within a div with "text-align: center". Having said that, for curiosity's sake, I'd still like to know whether the button should or shouldn't be centered in the example above. FOR THE BOUNTY: I know I'm doing odd things in the example, and as I point out in the update, I should have just aligned it center. For the bounty, I'd like references to the specs that answer: If I set "display: block", should the button be width 100%? Or is this undefined? Since the display is block, should "margin: 0 auto;" center the button, or not, or undefined?

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• paginate the class

  - by small

  please help me with pagination of this method my method is this one controller # def show @topic = Topic.find(params[:id]) @posts = @topic.posts.find(:all ,:order=> 'id') end views # %div{:style=>"margin: 0 auto;"} %table.sortable.style2{:cellpadding=>5} %thead %tr %td{:width => "25%",:align => "center",:style => "font-weight: bold;"}Posted By %td{:width => "75%",:style => "font-weight: bold;"}Comments %tbody - for post in @posts %tr %td{:align => "center"} &nbsp %div{:width=>"5px" , :style=>"border: 1px solid rgb(232, 232, 232);background-color: rgb(248, 248, 248);width: 60px; height:60px;" } - if post.posted_by.image = image_tag(post.posted_by.image.public_filename(),:width => "60px", :height => "60px",:align=>"center") %div{:style => "font-weight: bold; font-style: italic;"} = post.posted_by ? post.posted_by.firstname : "<em>Unknown User</em>" %br %div{:style => "font-style: italic;"} Posted on = post.created_at.strftime('%d of %B %Y ') = post.created_at.strftime('at %H:%M') %td{:valign => "top"} =post.body

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• Letting user carry on after three attempts

  - by sMilbz

  In my spelling game there is a grid that is populated with words. The words are hidden and the aim of the game is to spell the word that is highlighted with the aid of a sound and a picture. To highlight a word you press the "next" button. At the moment if you spell the word correctly it says "well done" and you can advance to the next word, but if you spell it incorrectly you have to keep attempting the word until it is complete. As the game is designed for children I do not think this is the best approach, so I would like to make it so you can advance after 3 incorrect attempts. I have played around with the script so much trying to put counters on incorrect attempts and then making the button active but cannot seem to get it to work. Can someone please help me? Here is the script for the button var noExist = $('td[data-word=' + listOfWords[rndWord].name + ']').hasClass('wordglow2'); if (noExist) { $('.minibutton').click(); } else { $('.minibutton').click('disable'); $("#mysoundclip").attr('src', listOfWords[rndWord].audio); audio.play(); $("#mypic").attr('src', listOfWords[rndWord].pic); pic.show(); } }); "wordglow2" is the style applied if the word is spelt correctly. Here is a fiddle to help understand... http://jsfiddle.net/smilburn/ZAfVZ/4/

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• How Are These Styles Cascading?

  - by user1569275

  Problem is viewable at this link. http://dansdemos.info/prototypes/htmlSamples/responsive/step08_megaGridForward.html The three boxes need to have green backgrounds, but another style is taking precedence. I thought styles were supposed to take precedence based on where they appear in the style sheets, with styles lower in the style sheet cascading (taking precedence) over styles higher in the style sheet. I guess that is wrong, because the style sheet for the background colors of those boxes is here: #maincontent .col { background: #ccc; background: rgba(204, 204, 204, 0.85); } #callout1 { background-color: #00B300; text-align:center; } #callout2 { background-color: #00CC00; text-align:center; } #callout3 { background-color: #00E600; text-align:center; } When the style for "#maincontent .col" is removed, the green shows up (link)http://dansdemos.info/prototypes/htmlSamples/responsive/step08_megaGridForwardGreen.html, but I thought the green should show up because it is after the gray color specified higher up. I am finding a way to get what I need, but it would really make it a lot easier if I understood why the backgrounds are gray, instead of green. Any assistance would be extremely much appreciated. Thank you.

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• How find all overlapping circles from radius of central circle?

  - by roza

  How to do an intersection or overlap query in mongo shell - what circles overlap my search region? Within relate only to the center position but doesn't include radius of the other circles in searched scope. Mongo: # My bad conception: var search = [[30, 30], 10] db.places.find({circle : {"$within" : {"$center" : [search]}}}) Now I can obtain only this circles within central point lies in searched area of circle: Ruby: # field :circle, type: Circle # eg. [ [ 30, 30 ], 10 ] field :radius, type: Integer field :location, :type => Array, :spatial => true spatial_index :location Places.within_circle(location: [ [ 30, 30 ], 10 ]) # {"$query"=>{"location"=>{"$within"=>{"$center"=>[[30, 30], 10]}}} I created example data with additional location (special index) and radius instead circle because circle isn't supported by mongodb geo index: { "_id" : 1, "name" : "a", "circle" : [ [ 5, 5 ], 40 ], "latlng" : [ 5, 5 ], "radius" : 40 } { "_id" : 2, "name" : "b", "circle" : [ [ 10, 10 ], 5 ], "latlng" : [ 10, 10 ], "radius" : 5 } { "_id" : 3, "name" : "c", "circle" : [ [ 20, 20 ], 5 ], "latlng" : [ 20, 20 ], "radius" : 5 } { "_id" : 4, "name" : "d", "circle" : [ [ 30, 30 ], 50 ], "latlng" : [ 30, 30 ], "radius" : 50} { "_id" : 5, "name" : "e", "circle" : [ [ 80, 80 ], 30 ], "latlng" : [ 80, 80 ], "radius" : 30} { "_id" : 6, "name" : "f", "circle" : [ [ 80, 80 ], 20 ], "latlng" : [ 80, 80 ], "radius" : 20} Desired query result: { "_id" : 1, "name" : "a", "circle" : [ [ 5, 5 ], 40 ], "latlng" : [ 5, 5 ], "radius" : 40 } { "_id" : 3, "name" : "c", "circle" : [ [ 20, 20 ], 5 ], "latlng" : [ 20, 20 ], "radius" : 5 } { "_id" : 4, "name" : "d", "circle" : [ [ 30, 30 ], 50 ], "latlng" : [ 30, 30 ], "radius" : 50} { "_id" : 5, "name" : "e", "circle" : [ [ 80, 80 ], 30 ], "latlng" : [ 80, 80 ], "radius" : 30} Solution below assumes that I get all rows and then filter on the ruby side my radius but it returns only: { "_id" : 4, "name" : "d", "circle" : [ [ 30, 30 ], 50 ], "latlng" : [ 30, 30 ], "radius" : 50}

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• Bash script not working on a new dedicated server

  - by Scott

  Recently I have migrated to the new dedicated server which is running on the same operating system - FreeBSD 8.2. I got a root account access and all permissions have been set properly. My problem is that, the bash script I was running on the old server doesn't works on the new machine, the only error appearing while running the script is: # sh script.sh script.sh: 3: Syntax error: word unexpected (expecting ")") Here is the code itself: #!/usr/local/bin/bash PORTS=(7777:GAME 11000:AUTH 12000:DB) MESSG="" for i in ${PORTS[@]} ; do PORT=${i%%:*} DESC=${i##*:} CHECK=`sockstat -4 -l | grep :$PORT | awk '{print $3}' | head -1` if [ "$CHECK" -gt 1 ]; then echo $DESC[$PORT] "is up ..." $CHECK else MESSG=$MESSG"$DESC[$PORT] wylaczony...\n" if [ "$DESC" == "AUTH" ]; then MESSG=$MESSG"AUTH is down...\n" fi if [ "$DESC" == "GAME" ]; then MESSG=$MESSG"GAME is down...\n" fi if [ "$DESC" == "DB" ]; then MESSG=$MESSG"DB is down...\n" fi fi done if [ -n "$MESSG" ]; then echo -e "Some problems ocurred:\n\n"$MESSG | mail -s "Problems" [email protected] fi I don't really code in bash, so I don't know why this happend...

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• Problem with inherited classes in C#

  - by Unniloct

  I have a class called "Entity," with two child classes: "Creature" and "Item." (I'm making a game.) Creature has two functions called "Attack," one for attacking Creatures, and one for attacking Items. So far, everything works well. Now I'm working on the shooting bit, so I have a function called SelectTarget(). It takes all of the Entities (both Creatures and Items) in the player's view that the player can shoot and lets the player choose one. So here lies the problem: SelectTarget() returns an Entity, but I need some code to figure out whether that Entity is a Creature or an Item, and process it appropriately. Since this question looks kind of empty without any code, and I'm not 100% sure my explanation is good enough, here's where I'm at: if (Input.Check(Key.Fire)) { Entity target = Game.State.SelectTarget.Run(); this.Draw(); if (target != null) { //Player.Attack(target); // This won't work, because I have: // Player.Attack((Creature)Target) // Player.Attack((Item)Target) // but nothing for Entity, the parent class to Creature and Item. return true; } } (If the way the game is laid out seems weird, it's a roguelike.)

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• Class is not applying to submit button

  - by Mayur

  Hi All, I m Trying to apply a class to following submit button Code: <input type="submit" value="Submit" name="commit"> css : .confirm-button-submit { width : 79px; font : bold 12px sans-serif;; color : #000; background : url("../images/confirm-btn.png") 0 -33px no-repeat; text-decoration : none; margin-top :0px; text-align:center; border:0px; cursor : pointer; height:170px; } .confirm-button a { display : block; width : 79px; padding : 8px 0px 12px 0px; font : bold 12px sans-serif;; color : #000; background : url("../images/confirm-btn.png") 0 -33px no-repeat; text-decoration : none; margin-top :0px; text-align:center; } .confirm-button a:hover { display : block; width : 79px; padding : 8px 0px 12px 0px; font : bold 12px sans-serif;; color : #fff; background : url("../images/confirm-btn.png") 0 0 no-repeat; text-decoration : none; margin-top :0px; text-align:center; } But its not working proper what to do Thanks

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• How can I have a Label change dynamically based on a Slider Value?

  - by duney

  I'm writing a grade calculator and I currently have a slider with a textbox beside it which displays the current value of the slider: <Slider Name="gradeSlider" Grid.Row="3" Grid.Column="2" VerticalAlignment="Center" Minimum="40" Maximum="100" IsSnapToTickEnabled="True" TickFrequency="5" TickPlacement="BottomRight"/> <TextBox Name="targetGrade" Grid.Row="3" Grid.Column="3" Width="30" Height="23" Text="{Binding ElementName=gradeSlider, Path=Value}" TextAlignment="Center"/> However I'm struggling to include a label which will show display a different grade classification based on the slider's value range. I'd have thought that I could create the label: <Label Name="gradeClass" Grid.Row="2" Grid.Column="2" HorizontalAlignment="Center" VerticalAlignment="Bottom"/> And then use code: string gradeText; if (gradeSlider.Value >= 40 && gradeSlider.Value < 50) { gradeText = "Pass"; gradeClass.Content = gradeText; } else if (gradeSlider.Value >= 50 && gradeSlider.Value < 60) { gradeText = "2:2"; gradeClass.Content = gradeText; } else { gradeText = "so on..."; gradeClass.Content = gradeText; } But the label just stays as "Pass" whatever the slider value. Could somebody please advise me as to where I'm going wrong? I tried using Content = "{Binding Source = gradeText}" on the Label xaml and removing the gradeClass.Content's in the code but it complained that gradeText was declared but never used. Many thanks to anyone who can help.

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• Creation of AsyncTask taking too much time Android

  - by user2842342

  I am making a network call in an AsyncTask, but the problem i am facing is the amount of time it is taking to start the doInBackground method. Here is a part of my code: button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Log.d("Temp:",System.currentTimeMillis()+""); new Move().execute(); /*some other logic } } And my AsyncTask is: private class Move extends AsyncTask<Void, Void, Void> { @Override protected Void doInBackground(Void... temp) { Log.d("start:",System.currentTimeMillis()+""); gson.fromJson(Web.Request.get(some_URL),Void.class); Log.d("end:",System.currentTimeMillis()+""); return null; } } These are the logs i got: 32658-998/com.example.game D/temp:? 1408923006159 32658-998/com.example.game D/start:? 1408923035163 32658-998/com.example.game D/end:? 1408923035199 So actually it took almost 29 secs to reach the first line in doInBackground method, where as it took just 36 ms to finish the network call. I tried it many times, the time taken is almost in the same order. Is it possible to start the AsyncTask immediately? Or is there any other way to solve this problem.(other than a running a simple thread?) Thank you :)

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• Timer not beginning from 00:00

  - by studentProgrammer

  I have a Game in which there is a timer involved. For each two minutes that passes a new round between different players begins. So, I have a text box starting from 00:00 and changes each second until it is equal to 02:00. Now, I want to save the state of the game in the middle of a round if the user closes the form. What I need to do is that upon loading, the textbox starts at the time that the user left the game the last time and continue up till 02:00 normally. How can I do this? This is what I have until now where Tournament is the Form public Tournament() { _timer = new System.Windows.Forms.Timer(); _timer.Interval = 1000; _timer.Tick += Timer_Tick; _myDateTime = DateTime.Now; newDate = new DateTime(); newDate = newDate.AddMinutes(2.00); _timer.Start(); InitializeComponent(); } void Timer_Tick(object sender, EventArgs e) { var diff = DateTime.Now.Subtract(_myDateTime); this.textBox1.Text = diff.ToString(@"mm\:ss"); DateTime dt = Convert.ToDateTime(diff.ToString()); if (newDate.Minute == dt.Minute) { _timer.Stop(); _myDateTime = DateTime.Now; displayPointsOrResults(); this.textBox1.Text = diff.ToString(@"mm\:ss"); } } In my LoadGame method: where timePassed is what I have written in the text box string[] splitted6 = timePassed.Split(':'); if (splitted6[0] == "00") { int remainingTime = 120 - Convert.ToInt32(splitted6[1]); DateTime time = DateTime.Now.Date; time = time.AddMinutes(remainingTime); _myDateTime = time; } else { int leftTime = Convert.ToInt32(splitted[0].Trim('0') + splitted[1]); int remainingTime = 120 - leftTime; DateTime time = DateTime.Now.Date; time = time.AddMinutes(remainingTime); _myDateTime = time; }

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• Add eclipseies after some letter in Phone gap

  - by user1542984

  I want to add eclipseies after some letter in table view , I am creating table at run time .can you suggest me.In one columns i want not more than 10 char so i need eclipseies , i share my code. var tbl = document.getElementById('mainBodyDivContent'); //tbl.innerHTML = ""; for (var i = 0; i <r.length-1; i++) { var tr = document.createElement('tr'); tr.setAttribute('id', i); (function(id) { tr.onclick = function() { if(myScroll.isScrolling) {return;} //window.clearTimeout(myTimedCall); //window.clearInterval(myTimedCall); window.location.href="route.html?RID="+r[id].RID+"&StationCode="+stationCode; }; }(i)); var td1 = document.createElement('td'); td1.setAttribute('width', '10%'); td1.setAttribute("align","center"); td1.innerHTML = r[i].platformNo;; var td2 = document.createElement('td'); td2.setAttribute('width', '40%'); td2.setAttribute("align","center"); td2.innerHTML = r[i].schDepart + " - " + r[i].expDepart;; var td3 = document.createElement('td'); td3.setAttribute('width', '40%'); td3.setAttribute("align","center"); *************************i want to add eclipseies if stationName is more than 10 char is show dot.....********* td3.innerHTML = r[i].stationName + " (" + r[i].crsCode + ")" ;;

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• Rendering ListBox takes too long on Windows Phone

  - by Bhawk1990

  I am working on a Windows Phone 7 Application using Local SQLite Database and I'm having an issue with the rendering time of pages that use DataBinding. Currently it takes 60-70ms to retrieve the data from the database. Then it takes about 3100ms to render the data retrieved using a ListBox with DataBinding. Here you can see the DataTemplate of the ListBox: <DataTemplate x:Key="ListBoxItemTemplate"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="68" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <TextBlock x:Name="TimeColumn" Text="{Binding TimeSpan}" Grid.Column="0" Grid.Row="0" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" /> <TextBlock Text="{Binding Stop.StopName}" Grid.Column="1" Grid.Row="0" Margin="15,0,0,0" TextWrapping="NoWrap" Foreground="Black" HorizontalAlignment="Left" VerticalAlignment="Center" /> </Grid> </DataTemplate> Comment: I have tried it using Canvas instead of Grid too, same result. Then, the database loads data into a CSList (using ViciCoolStorage) and that gets Binded to the ListBox: StationList.ItemsSource = App.RouteViewModel.RouteStops; Comment: I have tried to add the elements of the CSList to an ObservableCollection and bind that to the interface but didn't seem to change anything. Question: Am I doing something wrong that results in a huge load time - even if just loading 10 elements -, or this is normal? Do you have any recommendations to get a better performance with DataBinding? Thank you for your answers in advance!

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• What are some ways to accomplish a dynamic array?

  - by Ted

  I'm going to start working on a new game and one of the things I'd like to accomplish is a dynamic array sort of system that would hold map data. The game will be top-down 2d and made with XNA 4.0 and C#. You will begin in a randomized area which will essentially be tile based. As such a 2 dimensional array would be one way to accomplish this by holding numerical values which would correspond to a list of textures and that would be how it would draw this randomly created map. The problem is I would kind of only like to create the area around where you start and they could venture in which ever direction they wanted to. This would mean I'd have to populate the map array with more randomized data in the direction they go. I could make a really large array and use the center of it and the rest would be in anticipation of new content to be made, but that just seems very inefficient. I suppose when they start a new game I could have a one time map creation process that would go through and create a large randomly generated map array, but holding all of in memory at all times seems also inefficient. Perhaps if there was a way that I'd only hold parts of that map data in memory at one time and somehow not hold the rest in memory. In the end I only need to have a chunk of the map somewhat close to them in memory so perhaps some of you might have suggestions on good ways to approach this kind of randomized map and dynamic array problem. It wouldn't need to be a dynamic array type of thing if I made it so that it pulled in map data nearby that is needed and then once off the screen and not needed it could somehow get rid of that memory that way I wouldn't have a huge array taking up a bunch of memory.

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• goto was unexpected at this time

  - by SammytheNerd

  @echo off color 0a title Horror Game echo. echo. echo. echo. echo Welcome to the game echo If you get scared echo Feel free to leave echo. echo. echo You are in a dark room. echo It is cold. echo All you hear is a scratching sound echo near your feet. echo What do you do? echo. echo. echo 1.) Feel around you echo 2.) Listen for anything else set/p input = Command? if %input% == "1" goto Feel if %input% == "2" goto Listen echo. echo. :Feel echo You feel around and hear a growl. echo As you realize the scratching was echo on your leg. echo. echo You remember nothing else. pause end I am trying to make a text based game for cmd and whenever i try to enter a response is instantly closes and i can barely read out "goto was unexpected at this time"

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• Wrong class type in objective C

  - by Max Hui

  I have a parent class and a child class. GameObjectBase (parent) GameObjectPlayer(child). When I override a method in Child class and call it using [myPlayerClass showNextFrame] It is calling the parent class one. It turns out in the debugger, I see the myPlayerClass was indeed class type GameObjectBase (which is the parent class) How come? GameObjectBase.h #import <Foundation/Foundation.h> #import "cocos2d.h" @class GameLayer; @interface GameObjectBase : NSObject { /* CCSprite *gameObjectSprite; // Sprite representing this game object GameLayer *parentGameLayer; */ // Reference of the game layer this object // belongs to } @property (nonatomic, assign) CCSprite *gameObjectSprite; @property (nonatomic, assign) GameLayer *parentGameLayer; // Class method. Autorelease + (id) initWithGameLayer:(GameLayer *) gamelayer imageFileName:(NSString *) fileName; // "Virtual methods" that the derived class should implement. // If not implemented, this method will be called and Assert game - (void) update: (ccTime) dt; - (void) showNextFrame; @end GameObjectPlayer.h #import <Foundation/Foundation.h> #import "GameObjectBase.h" @interface GameObjectPlayer : GameObjectBase { int direction; } @property (nonatomic) int direction; @end GameLayer.h #import "cocos2d.h" #import "GameObjectPlayer.h" @interface GameLayer : CCLayer { } // returns a CCScene that contains the GameLayer as the only child +(CCScene *) scene; @property (nonatomic, strong) GameObjectPlayer *player; @end When I call examine in debugger what type "temp" is in this function inside GameLayer class, it's giving parent class GameObjectBase instead of subclass GameObjectPlayer - (void) update:(ccTime) dt { GameObjectPlayer *temp = _player; [temp showNextFrame]; }

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• Multiple Rectangle Generation

  - by user1610541

  In my code i wrote a method that creates a rectangle at mouseX, mouseY. but all it does is update the position of that rectangle so it follows the mouse, i want it to create a new one at the mouse every time the method runs, can someone please help? this is my method public void drawParticle(float x, float y){ g.drawRect(x, y, 4, 4); } The main class Control call the drawParticle method; import java.awt.Point; import java.awt.geom.Point2D; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.SlickException; import org.newdawn.slick.state.BasicGameState; import org.newdawn.slick.state.StateBasedGame; public class Control extends BasicGameState { public static final int ID = 1; public Methods m = new Methods(); public Graphics g = new Graphics(); int mouseX; int mouseY; public void init(GameContainer container, StateBasedGame game) throws SlickException{ } public void render(GameContainer container, StateBasedGame game, Graphics g) throws SlickException { m.drawParticle(mouseX, mouseY); } public void update(GameContainer container, StateBasedGame game, int delta) { } public void mousePressed(int button, int x, int y) { mouseX = x; mouseY = y; } public int getID() { return ID; } } Thanks - Shamus

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• how to use kml file in my code..

  - by zjm1126

  i download a kml file : <?xml version="1.0" encoding="UTF-8"?> <kml xmlns="http://www.opengis.net/kml/2.2"> <Document> <Style id="transGreenPoly"> <LineStyle> <width>1.5</width> </LineStyle> <PolyStyle> <color>7d00ff00</color> </PolyStyle> </Style> <Style id="transYellowPoly"> <LineStyle> <width>1.5</width> </LineStyle> <PolyStyle> <color>7d00ffff</color> </PolyStyle> </Style> <Style id="transRedPoly"> <LineStyle> <width>1.5</width> </LineStyle> <PolyStyle> <color>7d0000ff</color> </PolyStyle> </Style> <Style id="transBluePoly"> <LineStyle> <width>1.5</width> </LineStyle> <PolyStyle> <color>7dff0000</color> </PolyStyle> </Style> <Folder> <name>Placemarks</name> <open>0</open> <Placemark> <name>Simple placemark</name> <description>Attached to the ground. Intelligently places itself at the height of the underlying terrain.</description> <Point> <coordinates>-122.0822035425683,37.42228990140251,0</coordinates> </Point> </Placemark> <Placemark> <name>Descriptive HTML</name> <description><![CDATA[Click on the blue link!<br/><br/> Placemark descriptions can be enriched by using many standard HTML tags.<br/> For example: <hr/> Styles:<br/> <i>Italics</i>, <b>Bold</b>, <u>Underlined</u>, <s>Strike Out</s>, subscript_subscript, superscript^superscript, <big>Big</big>, <small>Small</small>, <tt>Typewriter</tt>, <em>Emphasized</em>, <strong>Strong</strong>, <code>Code</code> <hr/> Fonts:<br/> <font color="red">red by name</font>, <font color="#408010">leaf green by hexadecimal RGB</font> <br/> <font size=1>size 1</font>, <font size=2>size 2</font>, <font size=3>size 3</font>, <font size=4>size 4</font>, <font size=5>size 5</font>, <font size=6>size 6</font>, <font size=7>size 7</font> <br/> <font face=times>Times</font>, <font face=verdana>Verdana</font>, <font face=arial>Arial</font><br/> <hr/> Links: <br/> <a href="http://earth.google.com/">Google Earth!</a> <br/> or: Check out our website at www.google.com <hr/> Alignment:<br/> <p align=left>left</p> <p align=center>center</p> <p align=right>right</p> <hr/> Ordered Lists:<br/> <ol><li>First</li><li>Second</li><li>Third</li></ol> <ol type="a"><li>First</li><li>Second</li><li>Third</li></ol> <ol type="A"><li>First</li><li>Second</li><li>Third</li></ol> <hr/> Unordered Lists:<br/> <ul><li>A</li><li>B</li><li>C</li></ul> <ul type="circle"><li>A</li><li>B</li><li>C</li></ul> <ul type="square"><li>A</li><li>B</li><li>C</li></ul> <hr/> Definitions:<br/> <dl> <dt>Google:</dt><dd>The best thing since sliced bread</dd> </dl> <hr/> Centered:<br/><center> Time present and time past<br/> Are both perhaps present in time future,<br/> And time future contained in time past.<br/> If all time is eternally present<br/> All time is unredeemable.<br/> </center> <hr/> Block Quote: <br/> <blockquote> We shall not cease from exploration<br/> And the end of all our exploring<br/> Will be to arrive where we started<br/> And know the place for the first time.<br/> <i>-- T.S. Eliot</i> </blockquote> <br/> <hr/> Headings:<br/> <h1>Header 1</h1> <h2>Header 2</h2> <h3>Header 3</h3> <h3>Header 4</h4> <h3>Header 5</h5> <hr/> Images:<br/> <i>Remote image</i><br/> <img src="http://code.google.com/apis/kml/documentation/googleSample.png"><br/> <i>Scaled image</i><br/> <img src="http://code.google.com/apis/kml/documentation/googleSample.png" width=100><br/> <hr/> Simple Tables:<br/> <table border="1" padding="1"> <tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr> <tr><td>a</td><td>b</td><td>c</td><td>d</td><td>e</td></tr> </table> <br/>]]></description> <Point> <coordinates>-122,37,0</coordinates> </Point> </Placemark> </Folder> <Folder> <name>Google Campus - Polygons</name> <open>0</open> <description>A collection showing how easy it is to create 3-dimensional buildings</description> <Placemark> <name>Building 40</name> <styleUrl>#transRedPoly</styleUrl> <Polygon> <extrude>1</extrude> <altitudeMode>relativeToGround</altitudeMode> <outerBoundaryIs> <LinearRing> <coordinates> -122.0848938459612,37.42257124044786,17 -122.0849580979198,37.42211922626856,17 -122.0847469573047,37.42207183952619,17 -122.0845725380962,37.42209006729676,17 -122.0845954886723,37.42215932700895,17 -122.0838521118269,37.42227278564371,17 -122.083792243335,37.42203539112084,17 -122.0835076656616,37.42209006957106,17 -122.0834709464152,37.42200987395161,17 -122.0831221085748,37.4221046494946,17 -122.0829247374572,37.42226503990386,17 -122.0829339169385,37.42231242843094,17 -122.0833837359737,37.42225046087618,17 -122.0833607854248,37.42234159228745,17 -122.0834204551642,37.42237075460644,17 -122.083659133885,37.42251292011001,17 -122.0839758438952,37.42265873093781,17 -122.0842374743331,37.42265143972521,17 -122.0845036949503,37.4226514386435,17 -122.0848020460801,37.42261133916315,17 -122.0847882750515,37.42256395055121,17 -122.0848938459612,37.42257124044786,17 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark> <Placemark> <name>Building 41</name> <styleUrl>#transBluePoly</styleUrl> <Polygon> <extrude>1</extrude> <altitudeMode>relativeToGround</altitudeMode> <outerBoundaryIs> <LinearRing> <coordinates> -122.0857412771483,37.42227033155257,17 -122.0858169768481,37.42231408832346,17 -122.085852582875,37.42230337469744,17 -122.0858799945639,37.42225686138789,17 -122.0858860101409,37.4222311076138,17 -122.0858069157288,37.42220250173855,17 -122.0858379542653,37.42214027058678,17 -122.0856732640519,37.42208690214408,17 -122.0856022926407,37.42214885429042,17 -122.0855902778436,37.422128290487,17 -122.0855841672237,37.42208171967246,17 -122.0854852065741,37.42210455874995,17 -122.0855067264352,37.42214267949824,17 -122.0854430712915,37.42212783846172,17 -122.0850990714904,37.42251282407603,17 -122.0856769818632,37.42281815323651,17 -122.0860162273783,37.42244918858723,17 -122.0857260327004,37.42229239604253,17 -122.0857412771483,37.42227033155257,17 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark> <Placemark> <name>Building 42</name> <styleUrl>#transGreenPoly</styleUrl> <Polygon> <extrude>1</extrude> <altitudeMode>relativeToGround</altitudeMode> <outerBoundaryIs> <LinearRing> <coordinates> -122.0857862287242,37.42136208886969,25 -122.0857312990603,37.42136935989481,25 -122.0857312992918,37.42140934910903,25 -122.0856077073679,37.42138390166565,25 -122.0855802426516,37.42137299550869,25 -122.0852186221971,37.42137299504316,25 -122.0852277765639,37.42161656508265,25 -122.0852598189347,37.42160565894403,25 -122.0852598185499,37.42168200156,25 -122.0852369311478,37.42170017860346,25 -122.0852643957828,37.42176197982575,25 -122.0853239032746,37.42176198013907,25 -122.0853559454324,37.421852864452,25 -122.0854108752463,37.42188921823734,25 -122.0854795379357,37.42189285337048,25 -122.0855436229819,37.42188921797546,25 -122.0856260178042,37.42186013499926,25 -122.085937287963,37.42186013453605,25 -122.0859428718666,37.42160898590042,25 -122.0859655469861,37.42157992759144,25 -122.0858640462341,37.42147115002957,25 -122.0858548911215,37.42140571326184,25 -122.0858091162768,37.4214057134039,25 -122.0857862287242,37.42136208886969,25 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark> <Placemark> <name>Building 43</name> <styleUrl>#transYellowPoly</styleUrl> <Polygon> <extrude>1</extrude> <altitudeMode>relativeToGround</altitudeMode> <outerBoundaryIs> <LinearRing> <coordinates> -122.0844371128284,37.42177253003091,19 -122.0845118855746,37.42191111542896,19 -122.0850470999805,37.42178755121535,19 -122.0850719913391,37.42143663023161,19 -122.084916406232,37.42137237822116,19 -122.0842193868167,37.42137237801626,19 -122.08421938659,37.42147617161496,19 -122.0838086419991,37.4214613409357,19 -122.0837899728564,37.42131306410796,19 -122.0832796534698,37.42129328840593,19 -122.0832609819207,37.42139213944298,19 -122.0829373621737,37.42137236399876,19 -122.0829062425667,37.42151569778871,19 -122.0828502269665,37.42176282576465,19 -122.0829435788635,37.42176776969635,19 -122.083217411188,37.42179248552686,19 -122.0835970430103,37.4217480074456,19 -122.0839455556771,37.42169364237603,19 -122.0840077894637,37.42176283815853,19 -122.084113587521,37.42174801104392,19 -122.0840762473784,37.42171341292375,19 -122.0841447047739,37.42167881534569,19 -122.084144704223,37.42181720660197,19 -122.0842503333074,37.4218170700446,19 -122.0844371128284,37.42177253003091,19 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark> </Folder> <Folder> <name>LineString</name> <open>0</open> <Placemark> <LineString> <tessellate>1</tessellate> <coordinates> -112.0814237830345,36.10677870477137,0 -112.0870267752693,36.0905099328766,0 </coordinates> </LineString> </Placemark> </Folder> <Folder> <name>GroundOverlay</name> <open>0</open> <GroundOverlay> <name>Large-scale overlay on terrain</name> <description>Overlay shows Mount Etna erupting on July 13th, 2001.</description> <Icon> <href>http://code.google.com/apis/kml/documentation/etna.jpg</href> </Icon> <LatLonBox> <north>37.91904192681665</north> <south>37.46543388598137</south> <east>15.35832653742206</east> <west>14.60128369746704</west> </LatLonBox> </GroundOverlay> </Folder> <Folder> <name>ScreenOverlays</name> <open>0</open> <ScreenOverlay> <name>screenoverlay_dynamic_top</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/dynamic_screenoverlay.jpg</href> </Icon> <overlayXY x="0" y="1" xunits="fraction" yunits="fraction"/> <screenXY x="0" y="1" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="1" y="0.2" xunits="fraction" yunits="fraction"/> </ScreenOverlay> <ScreenOverlay> <name>screenoverlay_dynamic_right</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/dynamic_right.jpg</href> </Icon> <overlayXY x="1" y="1" xunits="fraction" yunits="fraction"/> <screenXY x="1" y="1" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="0" y="1" xunits="fraction" yunits="fraction"/> </ScreenOverlay> <ScreenOverlay> <name>Simple crosshairs</name> <visibility>0</visibility> <description>This screen overlay uses fractional positioning to put the image in the exact center of the screen</description> <Icon> <href>http://code.google.com/apis/kml/documentation/crosshairs.png</href> </Icon> <overlayXY x="0.5" y="0.5" xunits="fraction" yunits="fraction"/> <screenXY x="0.5" y="0.5" xunits="fraction" yunits="fraction"/> <rotationXY x="0.5" y="0.5" xunits="fraction" yunits="fraction"/> <size x="0" y="0" xunits="pixels" yunits="pixels"/> </ScreenOverlay> <ScreenOverlay> <name>screenoverlay_absolute_topright</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/top_right.jpg</href> </Icon> <overlayXY x="1" y="1" xunits="fraction" yunits="fraction"/> <screenXY x="1" y="1" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="0" y="0" xunits="fraction" yunits="fraction"/> </ScreenOverlay> <ScreenOverlay> <name>screenoverlay_absolute_topleft</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href> </Icon> <overlayXY x="0" y="1" xunits="fraction" yunits="fraction"/> <screenXY x="0" y="1" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="0" y="0" xunits="fraction" yunits="fraction"/> </ScreenOverlay> <ScreenOverlay> <name>screenoverlay_absolute_bottomright</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/bottom_right.jpg</href> </Icon> <overlayXY x="1" y="-1" xunits="fraction" yunits="fraction"/> <screenXY x="1" y="0" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="0" y="0" xunits="fraction" yunits="fraction"/> </ScreenOverlay> <ScreenOverlay> <name>screenoverlay_absolute_bottomleft</name> <visibility>0</visibility> <Icon> <href>http://code.google.com/apis/kml/documentation/bottom_left.jpg</href> </Icon> <overlayXY x="0" y="-1" xunits="fraction" yunits="fraction"/> <screenXY x="0" y="0" xunits="fraction" yunits="fraction"/> <rotationXY x="0" y="0" xunits="fraction" yunits="fraction"/> <size x="0" y="0" xunits="fraction" yunits="fraction"/> </ScreenOverlay> </Folder> </Document> </kml> and my code is : function initialize() { if (GBrowserIsCompatible()) { var map = new GMap2(document.getElementById("map_canvas")); var center=new GLatLng(39.9493, 116.3975); map.setCenter(center, 13); var geoXml = new GGeoXml("SamplesInMaps.kml"); <!--Place KML on Map --> map.addOverlay(geoXml); } } but ,i don't successful ,, do you know how to do this.. thanks

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• How to create a virtual audio device and stream audio input with it

  - by Steven Rosato

  Is it possible to create another audio device and redirect only wanted input streams to it? Here's my concrete problem: I am broadcasting a game via XFire and it uses the Windows audio device to capture any audio I receive. As I am broadcasting, other users who watch the video stream are communicating with me over Skype, and they hear themselves back within the video stream and it is entirely logical since I am broadcasting the audio I hear. What I want to do is create another audio device within Windows and redirect (pipe) ONLY the audio input from that game and not the input reveived from Skype. I would then tell XFire to use that newly created "virtual" audio device to broadcast and therefore my partners won't hear themselves back. Is there any software that can do that or can it be achieved natively with Windows? (I am under Windows 7).

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• Hyper-V Deployment Options Best Practices

  - by Erv Walter

  In what circumstances would you choose each of the following deployment options: Hyper-V installed as the bare bones Windows Hyper-V Server 2008 R2 Hyper-V role installed on a Windows Server 2008 R2 Server Core installation Hyper-V role installed on a Windows Server 2008 R2 Full Installation For example, I know there are licensing considerations for each option: With Hyper-V on top of a full installation of Enterprise or Data Center edition, you can use Windows Server as a guest OS without needing additional licenses (4 for Enterprise, unlimited for Data Center) With "Windows Hyper-V Server" you have to obtain licenses for each guest OS. But my real question is, are there technical considerations as well? I understand that the Full Installation doesn't perform as well as the other two options, but is there a significant difference between Server Core and "Windows Hyper-V Server"? What are the pros and cons of Hyper-V on Server Core vs "Windows Hyper-V Server" and when would you choose each?

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• Remove automatic Aero disabling in Windows 7

  - by Jani Hartikainen

  Sometimes when I'm playing games which are heavy on the GPU, Windows decides to helpfully disable aero, causing everything to freeze for a bit and in the worst case, combined with ATI's brilliant drivers, causes the game to crash. So, How do I stop Windows from automatically disabling Aero when playing games? It has absolutely no effect on the performance of the game itself when it does that. Also, I'd like to get rid of the "You should disable Aero to improve performance" helpful hint popup which sometimes shows up. But I suppose getting rid of the first will get rid of the second, assuming anyone knows how.

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