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• Error instantiating Texture2D in MonoGame for Windows 8 Metro Apps

  - by JimmyBoh

  I have an game which builds for WindowsGL and Windows8. The WindowsGL works fine, but the Windows8 build throws an error when trying to instantiate a new Texture2D. The Code: var texture = new Texture2D(CurrentGame.SpriteBatch.GraphicsDevice, width, 1); // Error thrown here... texture.setData(FunctionThatReturnsColors()); You can find the rest of the code on Github. The Error: SharpDX.SharpDXException was unhandled by user code HResult=-2147024809 Message=HRESULT: [0x80070057], Module: [Unknown], ApiCode: [Unknown/Unknown], Message: The parameter is incorrect. Source=SharpDX StackTrace: at SharpDX.Result.CheckError() at SharpDX.Direct3D11.Device.CreateTexture2D(Texture2DDescription& descRef, DataBox[] initialDataRef, Texture2D texture2DOut) at SharpDX.Direct3D11.Texture2D..ctor(Device device, Texture2DDescription description) at Microsoft.Xna.Framework.Graphics.Texture2D..ctor(GraphicsDevice graphicsDevice, Int32 width, Int32 height, Boolean mipmap, SurfaceFormat format, Boolean renderTarget) at Microsoft.Xna.Framework.Graphics.Texture2D..ctor(GraphicsDevice graphicsDevice, Int32 width, Int32 height) at BrewmasterEngine.Graphics.Content.Gradient.CreateHorizontal(Int32 width, Color left, Color right) in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Graphics\Content\Gradient.cs:line 16 at SampleGame.Menu.Widgets.GradientBackground.UpdateBounds(Object sender, EventArgs args) in c:\Projects\Personal\GitHub\BrewmasterEngine\SampleGame\Menu\Widgets\GradientBackground.cs:line 39 at SampleGame.Menu.Widgets.GradientBackground..ctor(Color start, Color stop, Int32 scrollamount, Single scrollspeed, Boolean horizontal) in c:\Projects\Personal\GitHub\BrewmasterEngine\SampleGame\Menu\Widgets\GradientBackground.cs:line 25 at SampleGame.Scenes.IntroScene.Load(Action done) in c:\Projects\Personal\GitHub\BrewmasterEngine\SampleGame\Scenes\IntroScene.cs:line 23 at BrewmasterEngine.Scenes.Scene.LoadScene(Action`1 callback) in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Scenes\Scene.cs:line 89 at BrewmasterEngine.Scenes.SceneManager.Load(String sceneName, Action`1 callback) in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Scenes\SceneManager.cs:line 69 at BrewmasterEngine.Scenes.SceneManager.LoadDefaultScene(Action`1 callback) in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Scenes\SceneManager.cs:line 83 at BrewmasterEngine.Framework.Game2D.LoadContent() in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Framework\Game2D.cs:line 117 at Microsoft.Xna.Framework.Game.Initialize() at BrewmasterEngine.Framework.Game2D.Initialize() in c:\Projects\Personal\GitHub\BrewmasterEngine\BrewmasterEngine\Framework\Game2D.cs:line 105 at Microsoft.Xna.Framework.Game.DoInitialize() at Microsoft.Xna.Framework.Game.Run(GameRunBehavior runBehavior) at Microsoft.Xna.Framework.Game.Run() at Microsoft.Xna.Framework.MetroFrameworkView`1.Run() InnerException: Is this an error that needs to be solved in MonoGame, or is there something that I need to do differently in my engine and game?

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• Is ActionScript 3 used by Serious Indie Developers?

  - by Puedes

  This question is for dedicated independent game developers: My dream is to be a game developer. I am a senior in high school who has taken Computer Science for all four years. I have used Java the whole time, but last year I started using PHP and ActionScript 3 (with Flixel). I also used Game Maker for a brief period. I apologize for this, I wanted to get that out of the way and clarify the fact that I have experience of some kind with game development. I am stuck at the moment because I don't quite know what language to use to develop games at a professional level. I am seriously interested in becoming a dedicated game developer, but this issue is really bothering me. I would like to know what the best option would be for my case, based on your experiences. Any advice is appreciated. Things to consider: I am only interested in making 2D games (I am not worried about 3D support) It would be ideal to use something that can be ported to multiple platforms (so as not to run into this problem later) I can't seem to figure out what the industry likes to use So far, this is what I have: I can't decide if it would be wise to stick with ActionScript 3, or move to C++ I know Flash would be for browser games, but what if I want to make a downloadable game, like Plants Vs. Zombies or Super Crate Box? Would Flash be a smart choice for standalone games, or did they use something else? Thank you for reading this, as I would like to stop worrying about this and make some games! Also, I hope this wasn't all over the place :) tl;dr Should I move ahead with AS3 or use something else i.e. C++

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• Scene graphs and spatial partitioning structures: What do you really need?

  - by tapirath

  I've been fiddling with 2D games for awhile and I'm trying to go into 3D game development. I thought I should get my basics right first. From what I read scene graphs hold your game objects/entities and their relation to each other like 'a tire' would be the child of 'a vehicle'. It's mainly used for frustum/occlusion culling and minimizing the collision checks between the objects. Spatial partitioning structures on the other hand are used to divide a big game object (like the map) to smaller parts so that you can gain performance by only drawing the relevant polygons and again minimizing the collision checks to those polygons only. Also a spatial partitioning data structure can be used as a node in a scene graph. But... I've been reading about both subjects and I've seen a lot of "scene graphs are useless" and "BSP performance gain is irrelevant with modern hardware" kind of articles. Also some of the game engines I've checked like gameplay3d and jmonkeyengine are only using a scene graph (That also may be because they don't want to limit the developers). Whereas games like Quake and Half-Life only use spatial partitioning. I'm aware that the usage of these structures very much depend on the type of the game you're developing so for the sake of clarity let's assume the game is a FPS like Counter-Strike with some better outdoor environment capabilities (like a terrain). The obvious question is which one is needed and why (considering the modern hardware capabilities). Thank you.

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• Is it considered poor programming to do this with xna components?

  - by Rob

  I created my own Menu System that is event driven. In order to have a loading screen and multithreaded loading to work, I devised this sort of implementation: //Let's check if the game is done loading. if (_game != null) { _gameLoaded = _game.DoneLoading; } //This means the game is loading still, //therefore the loading screen should be active. if (!_gameLoaded && _gameActive) { _gameScreenList[2].UpdateMenu(); } //The loading screen was selected. if (_gameScreenList[2].CurrentState == GameScreen.State.Shown && !_gameActive) { Components.Add(_game = new ParadoxGame(this)); _game.Initialize(); //Initializes the Game so that the loading can begin. _gameActive = true; } In the XNA Game Component that contains the actual game, in the LoadContent method I simply created a new Thread that calls another method ThreadLoad that has all the actual loading. I also have a boolean variable called DoneLoading in the XNA Game Component that is set to true at the end of the ThreadLoad. I am wondering if this is a poor implementation.

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• Scrolling though objects then creating a new instace of this object

  - by gopgop

  In my game when pressing the right mouse button you will place an object on the ground. all objects have the same super class (GameObject). I have a field called selected and will be equal to one certain gameobject at a time. when clicking the right mouse button it checks whats the instance of selected and that how it determines which object to place on the ground. code exapmle: t is the "slot" for which the object will go to. if (selected instanceof MapleTree) { t = new MapleTree(game,highLight); } else if (selected instanceof OakTree) { t = new OakTree(game,highLight); } Now it has to be a "new" instance of the object. Eventually my game will have hundreds of GameObjects and I don't want to have a huge if else statement. How would I make it so it scrolls though the possible kinds of objects and if its the correct type then create a new instance of it...? When pressing E it will switch the type of selected and is an if else statement as well. How would I do it for this too? here is a code example: if (selected instanceof MapleTree) { selected = new OakTree(game); } else if (selected instanceof OakTree) { selected = new MapleTree(game); }

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• Cry Engine 3 vs UDK

  - by Daniele Riccardelli

  I'm new here and I hope that other people may find this question interesting. Me and a bunch of guys from my University are thinking about getting started in game development, but, even though the game design is kind of ready, we are stucked at the point "which Engine should we choose". At first, we were thinking about Unity3D Free, in particular because we are pretty familiar with C# and, even better, it's completely free, but on the other hand there are some cons like no dynamic shadowing that make the realization of our game kinda hard. So, we are thinking about moving either to UDK or Cry Engine, since they are not as expensive as Unity3D Pro (at least before the game deployment) . The thing we are worried the most, though, is that we are kind of scared about the support for team work(i mean, that we might find it hard to coordinate our efforts without software support), since in Unity3D the team features are part of purchasable content, and we are not interested in paying that much for a project we are not even sure we can complete. So, finally, I hope one of you knows the mentioned engines enough to give us a tip telling which one offers better team features and is advisable for guys that have barely worked before on videogames but have good object oriented programming skills. Probably might be helpful for your suggestion, if i say that our game is an exploration game. Thanks to anybody who's going to answer.

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• Using ImpactJS: How to set a publicly available variable

  - by Dave Voyles

  I'm trying to get an entity (a bullet, a grenade, and an explosive) from my player player. Specifically, I want the shootingRate of my bullet (how frequently it can be fired). How can I do this without having to call getEntityByType each time I fire this projectile? There has got to be a cleaner way from what I'm doing right now.... // Shooting var isShooting = ig.input.state('shoot'); if (isShooting && this.lastShootTimer.delta() > 0) { switch (this.activeWeapon) { case("EntityBullet"): ig.game.spawnEntity(this.activeWeapon, this.pos.x, this.pos.y - 10); var equipedWeap = ig.game.getEntitiesByType(EntityBullet); this.lastShootTimer.set(equippedWeap.shootingRate); console.log(equipedWeap.shootingRate); break; case("EntityGrenade"): ig.game.spawnEntity(this.activeWeapon, this.pos.x, this.pos.y +5); var equipedWeap = ig.game.getEntitiesByType(EntityGrenade); this.lastShootTimer.set(equipedWeap.shootingRate); console.log(EquipedWeap.shootingRate); break; case("EntityExplosiveBomb"): ig.game.spawnEntity(this.activeWeapon, this.pos.x, this.pos.y +5 ); var equipedWeap = ig.game.getEntitiesByType(EntityExplosiveBomb)[0]; this.lastShootTimer.set(equipedWeap.shootingRate); console.log(equipedWeap.shootingRate); break; } }

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• XNA - Inconsistent accessibility: parameter type is less accessible than method

  - by DijkeMark

  I have a level class in which I make a new turret. I give the turret the level class as parameter. So far so good. Then in the Update function of the Turret I call a function Shoot(), which has that level parameter it got at the moment I created it. But from that moment it gives the following error: Inconsistent accessibility: parameter type 'Space_Game.Level' is less accessible than method 'Space_Game.GameObject.Shoot(Space_Game.Level, string)' All I know it has something to do with not thr right protection level or something like that. The level class: public Level(Game game, Viewport viewport) { _game = game; _viewport = viewport; _turret = new Turret(_game, "blue", this); _turret.SetPosition((_viewport.Width / 2).ToString(), (_viewport.Height / 2).ToString()); } The Turret Class: public Turret(Game game, String team, Level level) :base(game) { _team = team; _level = level; switch (_team) { case "blue": _texture = LoadResources._blue_turret.Texture; _rows = LoadResources._blue_turret.Rows; _columns = LoadResources._blue_turret.Columns; _maxFrameCounter = 10; break; default: break; } _frameCounter = 0; _currentFrame = 0; _currentFrameMultiplier = 1; } public override void Update() { base.Update(); SetRotation(); Shoot(_level, "turret"); } The Shoot Function (Which is in GameObject class. The Turret Class inherited the GameObject Class. (Am I saying that right?)): protected void Shoot(Level level, String type) { MouseState mouse = Mouse.GetState(); if (mouse.LeftButton == ButtonState.Pressed) { switch (_team) { case "blue": switch (type) { case "turret": TurretBullet _turretBullet = new TurretBullet(_game, _team); level.AddProjectile(_turretBullet); break; default: break; } break; default: break; } } } Thanks in Advance, Mark Dijkema

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• From release to business

  - by geneotech

  So let's say that I've finished programming a simple, indie MMO game similiar to Tibia. I've got a stable server application that is ready to launch, i've got a tested bug-free working client application that is ready to play and the game's official website (ready to host) with payment system and client that is ready to download for free. Let's say none of them break copyright laws, and no matter how impossible it sounds, let's for now say it's true. My game divides accounts into two groups - free and premium. If someone gets premium, he's granted access to all possible game features, that of course, need server authorisation to work properly. Let's say that the "premium account" can be bought on the website for a fixed money/month. Free accounts mean that everyone can actually play, but without paying, you get limited access. This is what the mentioned payment system will be for. Well, I'm completely novice to these business entities issues, so in short: what, in terms of law, are steps from here to the state where my game earns money in a fully legal way ? Also, is there for example, something like verification if game gives the user what it actually offers when paying on its website ? I live in Europe, if it changes something.

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• Tile sizes in 2D games

  - by Ephismen

  While developing a small game using tile-mapping method a question came to my mind: I would develop the game on Windows but wouldn't exclude adapting it to another platform. What size(in pixels) would you recommend using for creating the tiles of a tile-mapped game(ie: RPG) with the following requirements? Have an acceptable level of detail without having too many tiles. Having a decent map size. Allow adaptation of the game on a handheld(ie: PSP), smartphone or a computer without too much loss of detail or slowdowns. Allow more or less important zoom-in / zoom-out. Have a resolution of tile that permits either pixel-perfect collision or block-collision. Anything from a good explanation to a game example is useful as long as it can fit the requirements. This question may seem a bit simplistic, but I noticed that many Indies game developer were using inappropriate scales scenery. Also sorry for the poor syntax and the lack of vocabulary of my question, being a non-native English speaker doesn't help when talking about computers programming.

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• How do I convert mouse co-ordinates in Slick2d java?

  - by Trycon

  I'm really new in Java and I really want to how do I convert the mouse clicks to co-ordinates in game. My game moves its images so that the camera could stay with the character. I follwed thenewboston tutorials. I have been modifying new codes for smoother gameplay. I have been searching the web for tutorials. This is one of the codes: PosGameX=MouseX+0; PosGameY=MouseY+0; I have not try this code but, I really think this would not work. The website I have visited, I think, is not good for coding. My gameplay is that when the mouse clicks on a position. It would try to get the co-ordinates(Mouse) and convert it to game co-ordinates. And I really want to know how do I make my mouse clicks to game co-ordinates? FOR MORE INFO: Searches: How Do I translate game co-ordinates? How Do I translate mouse to game co-ordinates? AND PLEASE! Do not give me algebra. I have really forgotten those.

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• how can I store the current status of the game in cocos2d ?

  - by srikanth rongali

  I am writing a shooting game in cocos2d. And each enemy enters the screen after the current one is dead. I have stores the enemies and their properties in plist. I need to save the current state of the game. If any phone call comes the game should be started from the current state. So, I usedNsUserDefaults in this way, - (void) applicationDidFinishLaunching:(UIApplication*)application { ... NSUserDefaults *myDefaultOptions = [[myDefaultOptions stringForKey:@"enemyNumber"]intValue] ; //tempCount4 is the current Enemy number. It was declared in another class. I am using extern and using the value here. tempCount4 = [[myDefaultOptions stringForKey:@"enemyNumber"]intValue] ; } - (void)applicationWillTerminate:(UIApplication *)application { [[CCDirector sharedDirector] end]; [myDefaultOptions setObject:tempCount4 forKey:@"enemyNumber"]; } The control is not entering in to the (void)applicationWillTerminate:(UIApplication *)application when I pressed the Home button. And when I touched the game icon on the screen the game is running from first screen and in log (terminal )it is not showing any values. And what should I store to resume my game from stored state. Can you explain where I was wrong ? Thank You.

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• From Developer to Web Developer to Web Designer

  - by leftbrainlogic

  Is it possible for a fairly experienced Java Developer to transition to being a Web Developer and then to Web Designer. I guess what I'm asking is - assume you have (Java) developer of above average aptitute - is it possible for that developer to acquire web development skills that will enable him/her to develop small business websites without the need to hire outside skills. If so, where does one start on the path to becoming a Web Developer/Designer? Skills required? Tools used?

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• What is difference between Interaction design, Visual Design, Web design, UX design, UI design, UI d

  - by rajakvk

  What is difference between Interaction design, Visual Design, Web design, UX design, UI design, UI development? BTB, link found below answered for UI Vs UX. http://stackoverflow.com/questions/1334496/difference-between-ui-and-ux

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• Strengths and Weaknesses - Ruby on Rails

  - by ThePower

  I was wondering what are the strengths and weakness of using Ruby on Rails for Web Application development. I would like an insight from other developers as to why they have chosen to write in Ruby on Rails over other languages and technologies. What does Ruby on Rails provide that has the edge over other web application technologies and languages? Are there any unique capabilities that the language provides? Thanks in advance, hopefully I will be able to make the choice as to use the language or not.

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• Example of test plan

  - by alex

  I have done some research and found test plan over 40 pages. It includes so many elements that it is difficult to keep track. Additionally, it is not provided any examples, just a description of the different tests such as acceptance test, system test, etc. If anyone have made some good and simple test plan for the development of a product and could share, so that I can gain inspiration with example would be very helpful.

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• High performance web (-services) applications

  - by User Friendly

  Hi, I'd like to become a guru in high performance web & web-services applications. What technologies/patterns/skills do you reccomend to look at? Basically, I have good skills at ASP.NET/.NET based web development, but I'd like to know how big things are built (on any platform, not depending on .net technology stack). Thank you.

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• How would I shorten this If... Else... statement to check the state of a Date?

  - by Ian Roke

  I am a C# programmer but dabbling in VB.Net because everybody else in my team uses it. In the interests of professional development I would like to shrink the following If... Else... statement. If cmd.Parameters("@whenUpdated").Equals(DBNull.Value) Then item.WhenUpdated = cmd.Parameters("@whenUpdated").Value Else item.WhenUpdated = Nothing End If Cheers, Ian.

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• Contract developer trying to get outsourcing contract with current client.

  - by Mike

  I work for a major bank as a contract software developer. I've been there a few months, and without exception this place has the worst software practices I've ever seen. The software my team makes has no formal testing, terrible code (not reusable, hard to read, etc), minimal documentation, no defined development process and an absolutely sickening amount of waste due to bureaucratic overhead. Part of my contract is to maintain a group of thousands of very poorly written batch jobs. When one of the jobs fails (read: crashes), it's a developers job to look at the source, figure out what's wrong, fix it, and check it in. There is no quality assurance process or auditing of the results whatsoever. Once the developer says "it works" a manager signs off and it goes into production. What's disturbing is that these jobs essentially grab market data and put it into a third-party risk management system, which provides the bank with critical intelligence. I've discovered the disturbing truth that this has been happening since the 90s and nobody really has evidence the system is getting the correct data! Without going into details, an issue arose on Friday that was so horrible I actually stormed out of the place. I was ready to quit, but I decided to just get out to calm my nerves and possibly go back Monday. I've been reflecting today on how to handle this. I have realized that, in probably less than 6 months, I could (with 2 other developers) remake a large component of this system. The new system would provide them with, as primary benefits, a maintainable codebase less prone to error and a solid QA framework. To do it properly I would have to be outside the bank, the internal bureaucracy is just too much. And moreover, I think a bank is fundamentally not a place that can make good software. This is my plan. Write a report explaining in depth all the problems with their current system Explain why their software practices fail and generate a tremendous amount of error and waste. Use this as the basis for claiming the project must be developed externally. Write a high level development plan, including what resources I will require Hand 1,2,3 to my manager, hopefully he passes it up the chain. Worst case he fires me, but this isn't so bad. Convinced Executive decides to award my company a contract for the new system I have 8 years experience as a software contractor and have delivered my share of successful software products, but all working in-house for small/medium sized companies. When I read this over, I think I have a dynamite plan. But since this is the first time doing something this bold so I have my doubts. My question is, is this a good idea? If you think not, please spare no detail.

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• Mindmapping as a Documentation Tool

  - by mcass20

  My team has recently begun using XMind to organize development projects. It seems to be a pretty powerful brainstorming software. I'm just wondering if other developers have employed similar techniques to aid in documenting software design.

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• What is a postback?

  - by Scott Saad

  I'm making my way into web development and have seen the word postback thrown around. Coming from a non-web based background, what does a new web developer have to know about postbacks? (i.e. what are they and when do they arise?) Any more information you'd like to share to help a newbie in the web world be aware of postbacks would be most greatly appreciated.

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• Where have you used gSOAP?

  - by cmdev

  Can you give examples how you used gSOAP and how well it was integrated in your existing architecture? Have you found development bottlenecks with gSOAP?

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• What PHP framework would you choose for a new application and why?

  - by happyappa

  Over the course of your web development experience, what PHP framework(s) have you worked with? What strengths and weaknesses have you observed in those frameworks? Considering these, what framework would you recommend if beginning a new application?

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• What do you do to keep learning?

  - by tvanfosson

  When my children tell me that they hate school, I often tell them that they need to get used to continuous learning because they live in a generation in which constant learning will be required. How do I know -- because I live in a generation and work in an occupation in which continual learning is imperative. Do you agree with this sentiment? If so, what do you do to keep up with the continual pace of change in the field of software development?

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• PHP 6.0 - Roadmap?

  - by JustinT

  With the recent announcement that PHP 6 development has been halted, I'm confused as to what the PHP 5.x and 6.x road map includes. The current version of PHP is 5.3.2. There were quite a few significant features to come in PHP 6.0, such as: APC include for automatic bytecode caching Unicode support etc.. Question: What is the new road map of PHP given 6.0 has been canceled? What major features will be available next and in what release?

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