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  • Implementing camera for 2d side scroller game ?

    - by Mr.Gando
    Hello, I'm implementing a 2D side scroller for iOS (using C/C++ with OpenGL) (beat'em up style like double dragon/final fight ). My scenes are composed of one cyclical background image ( the end of the image connects perfectly with the beginning ). This is to produce a cyclical scroll effect. I was wondering how could I implement a camera that follows my player movement ? ( Resources / Links are greatly appreciated with explanations :) )

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  • Side effect-free interface on top of a stateful library

    - by beta
    In an interview with John Hughes where he talks about Erlang and Haskell, he has the following to say about using stateful libraries in Erlang: If I want to use a stateful library, I usually build a side effect-free interface on top of it so that I can the use it safely in the rest of my code. What does he mean by this? I am trying to think of an example of how this would look, but my imagination and/or knowledge is failing me.

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  • After Effects Question

    - by Josh
    Question here, not sure if it's the correct stack exchange site, sorry if it isn't. I have an After Effects project for school, and I've created a movie using JPEG sequences (10 @ ~100-200mb/each ). I have the output setting on the composition set to 640x480. I resized each JPEG layer via the fit to comp tool, but when I export the movie as a Quicktime movie, it is 1.1 gig for ~35 seconds of movie at 30fps. What am I doing so horribly wrong here?

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  • After Effects: Mac to PC

    - by Tom
    Is it possible to open an After Effects file that's been created on a Mac with PC? I don't know what version the AE was on the Mac side, but I want to oepn it with CS3 on a PC laptop.

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  • How to do the Geometry Wars gravity well effect

    - by Mykel Stone
    I'm not talking about the background grid here, I'm talking about the swirly particles going around the Gravity Wells! I've always liked the effect and decided it'd be a fun experiment to replicate it, I know GW uses Hooke's law all over the place, but I don't think the Particle-to-Well effect is done using springs, it looks like a distance-squared function. Here is a video demonstrating the effect: http://www.youtube.com/watch?v=YgJe0YI18Fg I can implement a spring or gravity effect on some particles just fine, that's easy. But I can't seem to get the effect to look similar to GWs effect. When I watch the effect in game it seems that the particles are emitted in bunches from the Well itself, they spiral outward around the center of the well, and eventually get flung outward, fall back towards the well, and repeat. How does he make the particles spiral outward when spawned? How does he keep the particle bunches together when near the Well but spread away from each other when they're flung outward? How does he keep the particles so strongly attached to the Well?

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  • Install Windows7 side by side with ubuntu 12.04

    - by Mohammed Khan
    I am fairly new to ubuntu, well i am using ubuntu 12.04 for a few months and i am getting the hang of it. Well I had windows on my machine but the one time i tried installing kubuntu 12.04 i messed up the whole computer and it wouldn´t boot up anymore, so I installed ubuntu 12.04 from a usb drive and it worked now i need windows for my school work so I wanted to ask if I can install Windows 7 without deleting ubuntu 12.04 and how do I install it? Thanks, Mohammed

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  • Sounds to describe the weather?

    - by Matthew
    I'm trying to think of sounds that will help convey the time of day and weather condition. I'm not even sure of all the weather conditions I would consider, and some are obvious. Like if it's raining, the sound of rain. But then I'm thinking, what about for a calm day? If it's morning time, I could do birds chirping or something. Night time could be an owl or something. What are some good combinations of sounds/weather/time to have a good effect?

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  • Tomorrow's web development: What's the bearing?

    - by pex
    I just read a wonderful article about headaches web developers have to live with nowadays. Several questions from that article busied me for some time as well. Now I am wondering whether I missed something, whether there are approaches other than Sproutcore or Cappucino to combine the eternal detached worlds of backend and frontend. How to only write validations once? How to collect business logic in only one model? Are we heading toward a combination of CouchDB Views, NodeJS and minimalistic client-side scripts including plenty of XHR requests? Or shall we follow the direction of handling everything except the database on client side? Is everything about JavaScript? I simply ask for approaches of setting up the next web application, for best practices and promising new technologies and frameworks.

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  • AJAX Requests & Client-Side JavaScript

    - by Sarah24
    I am new to AJAX and trying to understand a question I've been given: A HTTP request is generated by a form which contains some drop-down list. When the form is submitted, a new web page is displayed with some relevant text information (which is dependent on the list item selected). Now, the same parameters are sent to the server via an AJAX request, and the same text information is returned. Q. What tasks would the client-side JavaScript have to do to ensure a valid request was constructed and sent? Any useful links or quick explanations greatly appreciated.

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  • How to install Visual Studio 2010 Search References and Pro Power Tools side by side

    - by Daniel Cazzulino
    The new Visual Studio 2010 Pro Power Tools bring a new Add Reference dialog that completely replaces the classic one when you click the familiar Add Reference command: It seems like a nice dialog that is more aligned with the new Add New dialog and the Extension Manager one. But for this particular case, I believe it's awfully overkill (what's the use of that right sidebar? what's the use for the categories of assemblies split between Framework and Extensions?). The (also new) Search References extension which I blogged about earlier, gives you the familiar classic dialog enhanced with the must-have Search capability:...Read full article

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  • How to apply effects that occur (or change) over time to characters in a game?

    - by Joshua Harris
    So assume that I have a system that applies Effects to Characters like so: public class Character { private Collection<Effect> _effects; public void AddEffect (Effect e) { e.ApplyTo(this); _effects.Add(e); } public void RemoveEffect (Effect e) { e.RemoveFrom(this); _effects.Remove(e); } } public interface Effect { public void ApplyTo (Character character); public void RemoveFrom (Character character); } Example Effect: Armor Buff for 5 seconds. void someFunction() { // Do Stuff ... Timer armorTimer = new Timer(5 seconds); ArmorBuff armorbuff = new ArmorBuff(); character.AddEffect(armorBuff); armorTimer.Start(); // Do more stuff ... } // Some where else in code public void ArmorTimer_Complete() { character.RemoveEffect(armorBuff); } public class ArmorBuff implements Effect { public void applyTo(Character character) { character.changeArmor(20); } public void removeFrom(Character character) { character.changeArmor(-20); } } Ok, so this example would buff the Characters armor for 5 seconds. Easy to get working. But what about effects that change over the duration of the effect being applied. Two examples come to mind: Damage Over Time: 200 damage every second for 3 seconds. I could mimic this by applying an Effect that lasts for 1 second and has a counter set to 3, then when it is removed it could deal 200 damage, clone itself, decrement the counter of the clone, and apply the clone to the character. If it repeats this until the counter is 0, then you got a damage over time ability. I'm not a huge fan of this approach, but it does describe the behavior exactly. Degenerating Speed Boost: Gain a speed boost that degrades over 3 seconds until you return to your normal speed. This is a bit harder. I can basically do the same thing as above except having timers set to some portion of a second, such that they occur fast enough to give the appearance of degenerating smoothly over time (even though they are really just stepping down incrementally). I feel like you could get away with only 12 steps over a second (maybe less, I would have to test it and see), but this doesn't seem very elegant to me. The only other way to implement this effect would be to change the system so that the Character checks the _effects collection for effects that alter any of the properties any time that they are being used. I could handle this in functions like getCurrentSpeed() and getCurrentArmor(), but you can imagine how much of a hassle it would be to have that kind of overhead every time you want to do a calculation with movement speed (which would be every time you move your character). Is there a better way to deal with these kinds of effects or events?

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  • How to enable desktop effects on Ubuntu 10.04 after upgrade from Ubuntu 8.04?

    - by Manohar Bhattarai
    I upgraded my Ubuntu 8.04 to Ubuntu 10.04. When I try to enable desktop effects it says "Desktop effects could not be enabled". The output of "lspci | grep VGA" is : 00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03) Hardware drivers says there is no propriority hardware driver. I installed nVidia driver but I think my is an Intel graphics device. Please help.

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  • Run server side script

    - by ooo
    I'm in the process of deploying my first website which is written is ASP.NET. I need to run a server side script at set intervals during the day which updates a database even if there is nobody using the site. I was led to believe that using Windows task scheduler would be the best option but now I've joined a hosting company the layout is not really how I was expecting. It's a shared hosting with basic FTP and no apparent built in task scheduler. The hosting company support is not very good and haven't been able to advise how I could do this so hoped to get help here on options before I consider changing company. [The hosting company starts with 1 and ends with 1 :)]

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  • Should a web designer know server-side coding?

    - by Rasoul Zabihi
    We're implementing an CMS based on ASP.NET MVC. Now, any designer should be able to provide themes for this CMS. But to write a theme, they need to be able to modify the generated HTML, thus the concept of View. In other words, they should be capable to either modify current views, or create new views from scratch, to fit their requirements. However, now we're not sure that we're taking the right path. Should a web designer (HTML, CSS, JavaScript + Photoshop) really know about server-side platforms like Razor or PHP, or classic ASP, or anything else?

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  • Reporting Solution in PHP / CodeIgniter - Server side logic vs client side

    - by dot
    I'm building a report for an end user. They would like to see a list of all widgets... but then also like to see widgets with missing attributes, like missing names, or missing size. So i was thinking of creating one method that returns json data containing all widgets... and then using javascript to let them filter the data for missing data, instead of requerying the database. Ultimately, they need to be able to save all "reports" (filtered versions of data) inside a csv file. These are the two options I'm mulling over: Design 1 Create 3 separate methods in my controller/model like: get_all_data() get_records_with_missing_names() get_records_with_missing_size() And then when these methods are called, I would display the data on screen and give them a button to save to csv file. Design 2 Create one method called get_all_data() and then somehow, give them tools in the view to filter the json data using tables etc... and then letting them save subsets of the data. The reality is, in order to display all data, I still need to massage the data, and therefore, I know which records are missing attributes. So i'd rather not create separate methods by each filter. I'm not sure how I would do that just yet but at this point, i would like to know some pros/cons of each method. Thanks.

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  • Easy Server-Side Language

    - by Nizar
    Most of programming languages (Server-side languages for web development) needs a learning curve and requires some time to learn. However, I'm sure there is a difference between them. So, for example you can master the 'X' language in less time than the 'Y' language. I'm a beginner in web development, meaning that I just know HTML and CSS and now want to choose the right tool for building dynamic sites. What I'm looking for is a language that is easy to master in less time than other languages. So, is there a language that can suit my needs? If so, please let me know about what should I learn in it? (for example, which frameworks?, libraries?, IDEs?, databases?, etc). In the end, I don't want to regret my choice of the language and want to learn solid basics in it and in programming in general.

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  • How to create a simple side scroller game

    - by D34thSt4lker
    I'm still pretty new to game programming and any tutorial that I have worked with stuck to only games with the initial screen. I want to start creating my own games but there are a few things that I still need to learn. One of them is how to create a game that side-scrolls. For example; Mario... Or ANY type of game like that... Can anyone give me a small example to create something like that. I'm not asking for any specific language because currently in school I am learning javascript but I know some c++/java/processing/objective-c as well. So any of those languages would be fine and I could probably implement it in any of the others... I have been searching for some help with this for a while now but could never actually get any help on it. Thanks in advance!

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  • Install Ubuntu side by side with Windows

    - by Igal
    I'm trying to setup both Windows 7 and Ubuntu 14.04 Desktop on the same machine. I've partitioned the disk into 3 parts, so that I can have Windows Ubuntu Shared Partition for Files I've installed Windows 7 on the first partition (which created a small partition of 100MB for boot), so now I have 4 partitions on the disk which is all it can take. Now I am installing Ubuntu, and it's asking me whether I want to: Install Ubuntu inside Windows 7 Replace Windows 7 with Ubuntu (No!) Something else I want the Ubuntu installation to go into the partition that I prepared for it. Should I choose "Something else"? If I do so -- will I be able to choose which OS to load at boot? Can anyone explain how "Ubuntu inside Windows" work? it says that it will allow me to choose which OS to load at boot, which is desired. UPDATE: When choosing "Something else" I see also an option for Device for Boot Loader Installation: /dev/sda -- the ssd disk itself /dev/sda1 -- the Windows 7 loader (100MB partition) /dev/sda4 -- which is one of the other partitions Which one should I choose there? TIA!

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  • What is the preferred/recommend way of running two version of ubuntu side by side

    - by GreyGeek
    I am running 14.04, but I need to run some corporate software/scripts that have been specifically designed for 12.04. I am aware of virtual box/vmware for full virtualization but I am looking for something more lightweight (on my windows machine both come at a significant cost in battery life) closer to os virtualization level. Ideally, I would like something like windows 7/8 compatibility mode: the ability to run a program as if I were on 12.04. Does Ubuntu/Linux have such mechanism? What is the preferred way of running programs/scripts designed for an older version of Ubuntu?

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  • Benefits of using the same language for client and server?

    - by Makita
    I'm looking at architecture solutions for a mobile project that will have a web-service/app in addition to native apps. I've been looking at various libraries, frameworks, and stacks like jqm, backbone, parse, and meteor. Meteor, sort of an "open stack package framework", is tightly bound with node.js. There is a lot of talk about the benefits of using the same language both client and server side, and I'm not getting it. I could understand if you want to mirror the entire state of a web application on both client and server but struggling to find other wins... Workflow efficiency? I'm trying to understand why client/server language parity is considered to be a holy grail, any explicit examples or links would be greatly appreciated, thanks!

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  • How important is using the same language for client and server?

    - by Makita
    I have been evaluating architecture solutions for a mobile project that will have a web-service/app in addition to native apps and have been looking at various libraries, frameworks, and stacks like Meteor, this being a sort of "open stack package framework", is tightly bound with Node.js. There is a lot of talk about the benefits of using the same language both client and server side, and I'm not getting it. I could understand if you want to mirror the entire state of a web application on both client and server but struggling to find other wins... Workflow efficiency? I'm trying to understand why client/server language parity is considered to be a holy grail. Why does client/server language parity matter in software development?

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  • How to choose a server side language / framework

    - by pllee
    I am trying to come up with a list / ranking system on determining which server language to choose for a particular website. Assume that familiarity with a certain language is not important and the implementation can be done in any language. Here are some things that might be important but I am not sure how to rank them : Maintainability. Libraries. For example, Memcached and NoSql support right out the box would be really nice addition to a particular framework. 3rd party SDK's. For example, if I need Paypal on my site they openly provide SDK's for all senarios in Java, PHP and .Net. If I choose Django I would have to rely on 3rd party libraries that are don't support everything and are not officially maintained. Would that be dealbreaker for Django? Performance This one is tricky to put on a generic list because it can be a deal breaker but for many websites performance will not be an issue that the language/framework is responsible for. Cost (hosting, open source). edit - Any reason for the votes to close? I didn't see any duplicates mentioned and the question should not drum up a flame war.

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  • Drawing visible tiles - side scrolling

    - by Troubleshoot
    Currently I'm calling drawMap every time repaint is called. This is the code I've written for my drawMap method so far. public void drawMap(Graphics2D g2d) { float cameraX = Player.getX() - (Frame.CANVAS_WIDTH / 2); float cameraY = Player.getY() - (Frame.CANVAS_HEIGHT / 2); int tileX = (int) cameraX; int tileY = (int) cameraY; int xIndent = 0, yIndent = 0; int a = 0, b = 0; while (tileX % TILE_SIZE != 0) { tileX--; xIndent++; } while (tileY % TILE_SIZE != 0) { tileY--; yIndent++; } for (int y = tileY; y < tileY + Frame.CANVAS_HEIGHT; y += Map.TILE_SIZE) { for (int x = tileX; x < tileX + Frame.CANVAS_WIDTH; x += Map.TILE_SIZE) { if ((y / TILE_SIZE < 0 || x / TILE_SIZE < 0) || (y / TILE_SIZE > columnSize)) break; g2d.drawImage(map[y / TILE_SIZE][x / TILE_SIZE], a - xIndent, b - yIndent, null); a += TILE_SIZE; } a = 0; b += TILE_SIZE; } } The idea behind this is that it gets the camera position and draws the map relative to the player position. However, instead of the player being in the center of the screen all the time, the player actually moves away from the center as it scrolls to the right, and moves towards to center as it scrolls to the left. I've been trying to pinpoint what I've done wrong but I can't seem to find it. My code also seems quite messy, so am I doing this the correct way?

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  • Reading PowerPoint Effects with VBA

    - by OneNerd
    I have been working with VBA inside PowerPoint, and have a grasp on most things. What I am struggling with is reading the effect/animation settings for each object. I seem to be able to get a lot of what I need through the Powerpoint.ActivePresentation.Slides(slide_id).TimeLine.MainSequence(seq_num) What confuses me is how to convert the numeric value of Powerpoint.ActivePresentation.Slides(slide_id).TimeLine.MainSequence(seq_num).EffectType to an effect (so looking for a table of values to effects or perhaps a CONST table). Also, how to read in all the different level of effects (like entrance, or emphasis, etc) is really confusing. not to mention I cannot wrap my head around the timeline (which seems like it is not really a timeline). Can anyone point me to any good articles or documentation that discusses how to read the effects and animations properly and fully? Thanks.

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  • Android text layout question: two textviews, side-by-side, with different layout alignments and weights

    - by thx1200
    I'm still a bit of an Android noob, forgive me if this is simple and I'm just not seeing it. There are two portions of text in a view that spans the entire width horizontally, but is only as high as one line of text. The left side must always be displayed in full, but should take no more horizontal space than it needs. The right side should be pushed over by the left side and fill up the remainder of the screen width. If the right side text is smaller than this width, the text should be right-aligned horizontally. If the text is greater than the width, it should scroll horizontally. The text on the right side will be updated frequently and should slide up with new text when the app tells it (explaining the TextSwitcher in the layout). I have tried two different layout styles. In both situations, I can get the left side to "push" the layout, the right side to scroll, but I can't figure out how to get the right side to right align. It is always left aligned. Here is a picture showing what is happening... http://img10.imageshack.us/img10/5599/androidlayout.png In addition (but less important), in my layout code I have android:fadingEdge="none" on the TextViews, but it still has a faded edge on the left and right side when it scrolls. Why is that? Here are the two layouts I created, which yield the results shown, but not the results I want. Using a horizontal LinearLayout... <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/LinearLayoutStatusBar" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="2px" android:background="#555555" > <TextView android:id="@+id/TextViewTimer" android:textSize="18px" android:textColor="#FFFFFF" android:layout_gravity="left" android:layout_weight="0" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="0px" android:layout_marginRight="3px" android:text="Left Side" > </TextView> <TextSwitcher android:id="@+id/TextSwitcherDetails" android:inAnimation="@anim/push_up_in" android:outAnimation="@anim/push_up_out" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_marginLeft="3px" android:layout_marginRight="0px" > <TextView android:id="@+id/TextViewDetails1" android:textSize="18px" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="right" android:singleLine="true" android:ellipsize="marquee" android:marqueeRepeatLimit="marquee_forever" android:scrollHorizontally="true" android:focusable="true" android:focusableInTouchMode="true" android:fadingEdge="none" android:text="Right Side 1" > </TextView> <TextView android:id="@+id/TextViewDetails2" android:textSize="18px" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="right" android:singleLine="true" android:ellipsize="marquee" android:marqueeRepeatLimit="marquee_forever" android:scrollHorizontally="true" android:focusable="true" android:focusableInTouchMode="true" android:fadingEdge="none" android:text="Right Side 2 - This is a really long text this is long and fun and fun and long" > </TextView> </TextSwitcher> </LinearLayout> And the RelativeLayout style... <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/LinearLayoutStatusBar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="2px" android:background="#555555" > <TextView android:id="@+id/TextViewTimer" android:textSize="18px" android:textColor="#FFFFFF" android:layout_gravity="left" android:layout_weight="0" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="0px" android:layout_marginRight="3px" android:layout_alignParentLeft="true" android:text="Left Side" > </TextView> <TextSwitcher android:id="@+id/TextSwitcherDetails" android:inAnimation="@anim/push_up_in" android:outAnimation="@anim/push_up_out" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="3px" android:layout_marginRight="0px" android:layout_toRightOf="@+id/TextViewTimer" android:layout_alignParentRight="true" android:fadingEdge="none" android:fadingEdgeLength="0px" > <TextView android:id="@+id/TextViewDetails1" android:textSize="18px" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_gravity="right" android:singleLine="true" android:ellipsize="marquee" android:marqueeRepeatLimit="marquee_forever" android:scrollHorizontally="true" android:focusable="true" android:focusableInTouchMode="true" android:fadingEdge="none" android:fadingEdgeLength="0px" android:text="Right Side 1" > </TextView> <TextView android:id="@+id/TextViewDetails2" android:textSize="18px" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_gravity="right" android:singleLine="true" android:ellipsize="marquee" android:marqueeRepeatLimit="marquee_forever" android:scrollHorizontally="true" android:focusable="true" android:focusableInTouchMode="true" android:fadingEdge="none" android:fadingEdgeLength="0px" android:text="Right Side 2 - This is a really long text this is long and fun and fun and long" > </TextView> </TextSwitcher> </RelativeLayout> So how do I get that text on the right side to right-align. Thanks!

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