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• Any way to edit Warcraft MDX or MDL Animated models?

  - by Aralox

  I have been searching for a while for a way to get an animated mdl or mdx model into any 3D animating software (such as Blender), but so far have not had any success. I found a few methods of getting textured static mdx or mdl models into Blender/Milkshape/Hexagon, but no one seems to have written an importer that deals with the mdl/mdx model's keyframe animation. On that note, if anyone knows of a way of importing a keyframe-animated 3DS model into Blender, me and alot of people would appreciate it if you could let us know. Thanks for any help! :) PS: For anyone curious about static MDL or MDX - Blender, see here: http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Import-Export/WarCraft_MDL

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• How can I change this isometric engine to make it so that you could distinguish between blocks that are on different planes?

  - by l5p4ngl312

  I have been working on an isometric minecraft-esque game engine for a strategy game I plan on making. As you can see, it really needs some sort of shading. It is difficult to distinguish between separate elevations when the camera is facing away from the slope because everything is the same shade. So my question is: can I shade just a specific section of a sprite? All of those blocks are just sprites, so if I shaded the entire image, it would shade the whole block. I am using LWJGL. Are there any other approaches to take? Heres a link to a screenshot from the engine: http://i44.tinypic.com/qxqlix.jpg

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• How do I make a simple level system?

  - by ROROX

  I've been learning programming for a while and things are slow but steady. I only have a couple experiments that look something like a game (JavaScript,HTML5,CANVAS). One of the things I would like to establish this early in my process though is a basic level system to my games. I'm thinking like Atari, NES type simple. mainMenu , level1 , level2 , ... Later I'll work on including such screens as; titleScreen , pause , highScore. But for now just looking for the basics. Any good articles/tutorial links would help. Or just a snippet of code I can look over. Thank you kindly :)

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• OutOfBounds Exception when creating a PolygonShape using jbox2d

  - by B3nGr33ni3r

  So here's the deal, i'm parsing a file that contains the vertices for a polygon, that i want to create in box2d. I create a new PolygonShape() and then call .set() giving it a defined array of Vec, and that defined array's .length property. I expected this to work, since the documentation for jbox2d says this method takes a Vec array, and the count of Vec objects in that array. However, it errors out, and it seems to be unrelated to my code. The error i get is Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 8 at org.jbox2d.collision.shapes.PolygonShape.set(PolygonShape.java:174) and, upon looking at that line in the jbox2d svn repository, i still cannot figure out the issue. Any help is appreciated!

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• What are some ways to separate game logic from animations and the draw loop?

  - by TMV

  I have only previously made flash games, using MovieClips and such to separate out my animations from my game logic. Now I am getting into trying my hand at making a game for Android, but the game programming theory around separating these things still confuses me. I come from a background of developing non game web applications so I am versed in more MVC like patterns and am stuck in that mindset as I approach game programming. I want to do things like abstract my game by having, for example, a game board class that contains the data for a grid of tiles with instances of a tile class that each contain properties. I can give my draw loop access to this and have it draw the game board based on the properties of each tile on the game board, but I don't understand where exactly animation should go. As far as I can tell, animation sort of sits between the abstracted game logic (model) and the draw loop (view). With my MVC mindset, it's frustrating trying to decide where animation is actually supposed to go. It would have quite a bit of data associated with it like a model, but seemingly needs to be very closely coupled with the draw loop in order to have things like frame independent animation. How can I break out of this mindset and start thinking about patterns that make more sense for games?

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• Operations on multiple overlapping layers not working

  - by Arun

  Hi I am developing a game in android just like Farmville by Zinga. In that game we have to place elements in the diamond shaped field so the don't overlap each other. Now I did coding for placing the field inside the farm field but I cannot stop the problem of overlapping of the farm field. I Am attaching the code that I have down for all this someone please help me.... try{ if(bm1.getPixel((int)initX,(int)initY)!=0){ if(bm1.getPixel((int)initX,(int)initY+20)!=0){ if(bm1.getPixel((int)initX-20,(int)initY)!=0){ if(bm1.getPixel((int)initX+20,(int)initY)!=0){ if(bm1.getPixel((int)initX,(int)initY-20)!=0){ c.drawBitmap(bm,initX-30,initY-20, paint); } } } } } }catch(Exception e) { Toast.makeText(getContext(), e.toString(), Toast.LENGTH_SHORT); }

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• Texture not rendering in correct order in xna 4?

  - by user1090751

  I am making a simple board game. In the game there is a fixed background called myTexture and others are textureGoat and textureTiger whicha are to be placed on top of the background(myTexture). But i am having problem that fourth and fifth component is not displaying however, the sixth component( i.e. myTexture) is appearing. Here is my code, please look at it protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.Green); // TODO: Add your drawing code here spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend); //placing tiger spriteBatch.Draw(textureTiger, new Rectangle(22, 25, 50, 50), Color.White);//first component spriteBatch.Draw(textureTiger, new Rectangle(22, 407, 50, 50), Color.White);//second component spriteBatch.Draw(textureTiger, new Rectangle(422, 25, 50, 50), Color.White);//third component spriteBatch.Draw(textureTiger, new Rectangle(422, 407, 50, 50), Color.White);//fourth component //placing goat spriteBatch.Draw(textureGoat, new Rectangle(125, 110, 50, 50), Color.White);//fifth component //placing background spriteBatch.Draw(myTexture, new Rectangle(0, 0, 500, 500), Color.White);//sixth component spriteBatch.End(); base.Draw(gameTime); }

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• Auto-organized / smart inventory system?

  - by VeXe

  for the past week I've been working on an inventory system with Unity3D. At first I got help from the guys at Design3 but it wasn't too long till we split path, because I really didn't like the way they did their code, it didn't have any smell of OOP whatsoever. I took it further steps ahead - items take more than one slot, advanced placement system (items tries their best to find the best close fit), local mouse system (mouse gets trapped in active bag area), etc. Here's a demo of my work. What we would like to have in our game, is an auto-organizing feature - not auto-sort. We want this feature because our inventory's going to be in 'real-time' - not like in Resident Evil 1,2,3 etc where you would pause the game and do things in your inventory. Now imagine your self in a sticky situation surrounded by zombies, and you don't have bullets, you look around, you see that there are bullets nearby on the ground, so you go for them and try to pick them up, but they don't fit! you look at your inventory and find out that if you reorganize some of the items, it will fit! - now the player - in that situation doesn't have time to reorganize because he's surrounded with zombies and will die if he stops and organizes the inventory to make space (remember inventory in real-time, no pausing) - wouldn't it be nice for that to happen automatically? - Yes! (I believe this has been implemented in some games like Dungeon siege or something, so sure it's doable) take a look at this picture for example: Yes, so if you auto-sort the issue you will get your spaces but it's bad because: 1- Expensive: it doesn't need a whole sort operation to free those spaces, in the first picture, just slide the red item at the bottom to the very left, and you get the same spaces that you got from the auto-sort. 2- It's annoying to the player: "Who the F told you to re-order my stuff?" I'm not asking for "How to write the code" for this, I'm just asking for some guidance, where to look, what algorithms are involved? Is this something related to graphs and shortest path stuff? I hope not cuz I didn't manage to continue my college studies :/ But even if it is, just tell me and I will learn the stuff related. Notice there could be more than just one solution. So I guess the first thing I have to do is figure out if the situation is 'solvable' - if I know how to determine if a situation is solvable or not, then I can 'solve' it. I just need to know the conditions that makes it 'solvable'. And I believe there must be some algorithm/data structure for this. Here's a pic for more than one solution of trying to fit a 1x3 item: The arrows show just one of the solutions, but if you look you will find more than one. This is what I ultimately not auto-sorting but find a solution and applying it. Note that if I spend time on it I will come up with a way to solve it, but it wouldn't be the best way, it's like, holding a car wheel with your feet instead of your hands! XD Or just like trying to solve an issue that requires arrays, but you're not yet aware of their existence! So what is the right approach to this? Hope somebody helps, thanks a lot in advance :)

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• GameStateManagement and inputs not being recognized

  - by Dave Voyles

  EDIT: I've removed a bit of code from the input class to make this more readable, and updated my StartScreen class, which is now at the bottom. I have the same issues though, but they are explained in my comments on the bottom of this page. It won't let me paste my additional code here (the format comes out crazy), so I've linked to pastebin with the code pastebin I've been trying to implement the MS provided GameStateManagement sample with my game, but it has proven a bit difficult. Really, I'm using Oneksoft's Starter Kit, which uses the MS provided sample, so they are identical, except for my splash screen. I'm able to get the splash screen to launch, where it informs the player to press A to advance the screen, but this doesn't seem to accept any of my inputs. I’ve also added Console.Writeline(“Pressing A”) under the IsMenuPressed method in Input.cs to verify that it is getting called, but for some reason it is constantly spamming my log, rather than just appearing each time I press it. Not sure why this is happening. I have a bit too much code to post it all here, so I’ve attached a link to my .rar with my classes, but I’ll also leave a bit here which I thinkmay be applicable. https://www.dropbox.com/sh/6ek4uru2jc2ch0k/JTeBWN_3PQ What do you guys think the issue is? namespace Pong { public class Input { public const int MaxInputs = 4; public readonly KeyboardState[] CurrentKeyboardState; public readonly GamePadState[] CurrentGamePadState; public KeyboardState[] LastKeyboardState; public GamePadState[] LastGamePadState; public readonly bool[] GamePadWasConnected; public Input() { // Get input state CurrentKeyboardState = new KeyboardState[MaxInputs]; CurrentGamePadState = new GamePadState[MaxInputs]; // Preserving last states to check for isKeyUp events LastKeyboardState = CurrentKeyboardState; LastGamePadState = CurrentGamePadState; } /// <summary> /// Checks for a "menu select" input action. /// The controllingPlayer parameter specifies which player to read input for. /// If this is null, it will accept input from any player. When the action /// is detected, the output playerIndex reports which player pressed it. /// </summary> public bool IsMenuSelect(PlayerIndex? controllingPlayer, out PlayerIndex playerIndex) { Console.WriteLine("Pressing A"); return IsNewKeyPress(Keys.Space, controllingPlayer, out playerIndex) || IsNewKeyPress(Keys.Enter, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.A, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.Start, controllingPlayer, out playerIndex); } /// <summary> /// Checks for a "menu cancel" input action. /// The controllingPlayer parameter specifies which player to read input for. /// If this is null, it will accept input from any player. When the action /// is detected, the output playerIndex reports which player pressed it. /// </summary> public bool IsMenuCancel(PlayerIndex? controllingPlayer, out PlayerIndex playerIndex) { return IsNewKeyPress(Keys.Escape, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.B, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.Back, controllingPlayer, out playerIndex); }

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• Loading images in XNA 4.0; "Cannot Open File" Problems

  - by user32623

  Okay, I'm writing a game in C#/XNA 4.0 and am utterly stumped at my current juncture: Sprite animation. I understand how it works and have all the code in place, but my ContentLoader won't open my file... Basically, my directory looks like this: //WindowsGame1 - "Game1.cs" - //Classes - "NPC.cs" - Content Reference - //Images - "Monster.png" Inside my NPC class, I have all the essential drawing functions, i.e. LoadContent, Draw, Update. And I can get the game to find the correct file and attempt to open it, but when it tries, it throws an exception and tells me it can't open the file. This is how my code in my NPC class looks: Texture2D NPCImage; Vector2 NPCPosition; Animation NPCAnimation = new Animation(); public void Initialize() { NPCAnimation.Initialize(NPCPosition, new Vector2(4, 4)); } public void LoadContent(ContentManager Content) { NPCImage = Content.Load<Texture2D>("_InsertImageFilePathHere_"); NPCAnimation.AnimationImage = NPCImage; } The rest of the code is irrelevant at this point because I can't even get the image to load. I think it might have to do with a directory problem, but I also know little to nothing about spriting or working with images or animations in my code. Any help is appreciated. Not sure if I provided enough information here, so let me know if more is needed! Also, what would be the correct way to direct that Content.Load to Monster.png given the current directory situation? Right now I just have it using the full path from the C:// drive. Thanks in advance!

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• Any advice for dynamic music control?

  - by Assembler

  I would like to be able to dynamically progress the score, and affect the volume levels of separate channels within the music. How could I do this? From my experience with mod music (olden days Amiga music, Mod Tracker, Scream Tracker, Fast Tracker II, Impulse Tracker etc etc), I believe this is the best way to tackle the problem, to allow the music to move from one loop to another, without anything mixed down. I want to do this in AS3, and am considering pulling apart Flod to make this happen

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• Best approach to get clicked objects from a display list (2D)

  - by Ixx

  I'm implementing a display list to manage my visuals on screen. I want to know which object is clicked. My objects already have z-order variable. With my current knowledge (almost nothing) the only thing which comes to my mind is make a linear search and get all the objects which contains the clicked point. And then select the object with the highest z-order. But I know there are far better approaches. I think it's something with trees (binary search?). - container display objects and search recursively? just don't know where to start looking, for this concrete case. Any hint link or concrete solution is welcome.

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• 2D fighting bounding boxes

  - by user36420

  I'm prototyping a 2D platformer/brawler game for uni and I'm having some trouble with creating collision/bounding boxes. This is most likely going to end up on a Vita so I do have some library constraints as well as performance implications. None of this has yet been implemented but is all theory. My idea was to have the artist create a sprite sheet for the character animation and then a second identical sprite sheet with the corresponding collisions in a solid colour (e.g green for where the character can be hit and red for dealing damage, near the foot if kicking etc.) With this, I would then parse the collision sheet and generate the various collisions required storing them in the character model. This is the point I feel would be most inefficient. While I think this is a possible solution, I was wondering if there was a more standard way of doing this or a more efficient way as I feel this would have severe performance problems.

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• How to design the scenarios in a platform game?

  - by ReyLitch

  I am developing a 3D platform game like Metroid Fusion with XNA. I have many classes for different elements as models, game screens, postprocessing and so on. Now I want to start designing the scenarios but I think that the scenarios needed in a platform game are not as conventional (by conventional I say something like this). I am very lost and not know where to start and how to structure it. Thanks in advance.

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• Managing many draw calls for dynamic objects

  - by codetiger

  We are developing a game (cross-platform) using Irrlicht. The game has many (around 200 - 500) dynamic objects flying around during the game. Most of these objects are static mesh and build from 20 - 50 unique Meshes. We created seperate scenenodes for each object and referring its mesh instance. But the output was very much unexpected. Menu screen: (150 tris - Just to show you the full speed rendering performance of 2 test computers) a) NVidia Quadro FX 3800 with 1GB: 1600 FPS DirectX and 2600 FPS on OpenGL b) Mac Mini with Geforce 9400M 256mb: 260 FPS in OpenGL Now inside the game in a test level: (160 dynamic objects counting around 10K tris): a) NVidia Quadro FX 3800 with 1GB: 45 FPS DirectX and 50 FPS on OpenGL b) Mac Mini with Geforce 9400M 256mb: 45 FPS in OpenGL Obviously we don't have the option of mesh batch rendering as most of the objects are dynamic. And the one big static terrain is already in single mesh buffer. To add more information, we use one 2048 png for texture for most of the dynamic objects. And our collision detection hardly and other calculations hardly make any impact on FPS. So we understood its the draw calls we make that eats up all FPS. Is there a way we can optimize the rendering, or are we missing something?

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• Memory allocation strategy for the vertex buffers (DirectX 10/11)

  - by Alex

  I have the following question. I write CAD system. So I have a 3D scene and there are many different objects (walls, doors, windows and so on). User can add or delete some objects. The question is: how can I organise the keeping of vertices for all my objects. I can create vertex buffer for every object. But I think drawing/switching from one buffer to another would have performance penalty. Another way - I can create several big buffers for every object type. But I don't understand how to update such buffers. It is too big to update whole buffer (for example buffer for all walls). What I need to do if I want to delete the object from the middle of the buffer? Actually I have the similar question: http://stackoverflow.com/questions/5515700/how-to-properly-update-vertex-buffers-in-directx-10 Most examples I've found work with very static models. Therefore, they tend to create a single vertex buffer with their list of points, and then are just manipulated by matrix transformations. I, on the other hand, will be updating the scene very often.

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• why specular light is not running?

  - by nkint

  hi, i'm on JOGL this is my method for lighting: private void lights(GL gl) { float[] LightPos = {0.0f, 0.0f, -1.0f, 1.0f}; float[] LightAmb = {0.2f, 0.2f, 0.2f, 1.0f}; float[] LightDif = {0.6f, 0.6f, 0.6f, 1.0f}; float[] LightSpc = {0.9f, 0.9f, 0.9f, 1.0f}; gl.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, LightPos, 0); gl.glLightfv(GL.GL_LIGHT1, GL.GL_AMBIENT, LightAmb, 0); gl.glLightfv(GL.GL_LIGHT1, GL.GL_DIFFUSE, LightDif, 0); gl.glLightfv(GL.GL_LIGHT1, GL.GL_SPECULAR, LightSpc, 0); gl.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, LightSpc, 0); gl.glEnable(GL.GL_LIGHT0); gl.glEnable(GL.GL_LIGHT1); gl.glShadeModel(GL.GL_SMOOTH); gl.glEnable(GL.GL_LIGHTING); } and i see my objects flat, no specular light.. any ideas? ps. to render my objects: gl.glColor3f(1f,0f,0f); gl.glBegin(GL.GL_TRIANGLES); for(Triangle t : tubeModel.getTriangles()) { gl.glVertex3f(t.v1.x, t.v1.y, t.v1.z); gl.glVertex3f(t.v2.x, t.v2.y, t.v2.z); gl.glVertex3f(t.v3.x, t.v3.y, t.v3.z); } gl.glEnd();

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• How can I teleport seamlessly, without using interpolation?

  - by modchan

  I've been implementing Bukkit plugin for creating toggleable in-game warping areas that will teleport any catched entity to other similar area. I was going to implement concept of non-Euclidean maze using this plugin, but, unfortunately, I've discovered that doing Entity.teleport() causes client to interpolate movement while teleporting, so player slides towards target like Enderman and receives screen updates, so for a split second all underground stuff is visible. While for "just teleport me where I want" usage this is just fine, it ruins whole idea of seamless teleporting, as player can clearly see when transfer happened even without need to look at debug screen. Is there possibility to somehow disable interpolating while teleporting without modifying client, or maybe prevent client from updating screen while it's being teleported?

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• Textures selectively not applying in Unity

  - by user46790

  On certain imported objects (fbx) in Unity, upon applying a material, only the base colour of the material is applied, with none of the tiled texture showing. This isn't universal; on a test model only some submeshes didn't show the texture, while some did. I have tried every combination of import/calculate normals/tangents to no avail. FYI I'm not exactly experienced with the software or gamedev in general; this is to make a small static scene with 3-4 objects max. One model tested was created in 3DSMax, the other in Blender. I've had this happen on every export from Blender, but only some submeshes from the 3DSMax model (internet sourced to test the problem)

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• how to use string::find to look for a word rather each character seperately

  - by RubyKing

  Hello how would I look through a string for a word rather then each character in that word. I have my code here and it always seems to find everything that is .obj even if its o or b or j or "." is there anyway to get passed this here is my code? I checked the docuementation here link but nothing returned any results I craved so hard string &str = *it; if(it->find(".obj")) { cout << "Found .Obj" << endl; } I also tried to use string::compare but that failed :(

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• XNA- Texturing problem, exporting model

  - by user1806687

  How,can I disable coloring when texture is applied, because right now the texture is being colored over. foreach (BasicEffect effect in mesh.Effects) { effect.TextureEnabled = textureApplied; if(textureApplied) effect.Texture = Texture2D.FromStream(GraphicsDevice,System.IO.File.OpenRead(texturePath)); else { effect.DiffuseColor = ti.DiffuseColor; effect.EmissiveColor = ti.EmissiveColor; } ... } mesh.Draw(); Also, is there any easy way for xna to export models? Or do I have to write my own?

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• How does a segment-based rendering engine (as in Descent) work?

  - by Calmarius

  As far as I know Descent was one of the first games that featured a fully 3D environment, and it used a segment based rendering engine. Its levels are built from cubic segments (these cubes may be deformed as long as it remains convex and sides remain roughly flat). These cubes are connected by their sides. The connected sides are traversable (maybe doors or grids can be placed on these sides), while the unconnected sides are not traversable walls. So the game is played inside of this complex. Descent was software rendered and it had to be very fast, to be playable on those 10-100MHz processors of that age. Some latter levels of the game are huge and contain thousands of segments, but these levels are still rendered reasonably fast. So I think they tried to minimize the amount of cubes rendered somehow. How to choose which cubes to render for a given location? As far as I know they used a kind of portal rendering, but I couldn't find what was the technique used in this particular kind of engine. I think the fact that the levels are built from convex quadrilateral hexahedrons can be exploited.

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• Most effective marketing strategy to promote a casual iOS game?

  - by user1114968

  So I posted this on another forum yesterday but that forum got suspended for malware so gotta wait for the webmaster to fix the site. Here's the basics: We've released a press release through PRMac that included a video review. Submitted and followed up on all the big iOS review sites. None of them replied back with interest. A lot of them just told me that their editors are volunteers who will review games that are "interesting to their readers" and that they would put my app "into consideration" The only site that reviewed our app and promoted virally was iPhoneAppReview.com which we paid. We promoted on the top iOS forums We are now doing in-app advertising through inMobi and are integrating the SDK code into our app to start doing Tapjoy We posted up our gameplay videos on YouTube Any marketing strategies that anyone can suggest or recommend that we haven't used yet? If anyone wants to try out our game and give feedback on the game or the site or anything, that would be great! Our target countries are Japan, China, and the US.

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• best programming language for a web based game?

  - by Adam Geisweit

  what programming language would be best for making a web based game to be played in a browser, and where would i be able to find tutorials on how to use the language? i have looked up silverlight in xna (because that was what i was most fluent with), but it made my projects unusable for a month until i got all of silverlight off my computer. i have looked at java and javascript, but i have found no suitable places where i can learn to create games on either of these, just the basics of the language. does anyone have any advice on this?

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• Component based design, but components rely on eatchother

  - by MintyAnt

  I've begun stabbing at a "Component Based" game system. Basically, each entity holds a list of components to update (and render) I inherit the "Component" class and break each game system into it. Examples: RenderComponent - Draws the entity MovementComponent - Moves the entity, deals with velocity and speed checks DamageComponent - Deals with how/if the entity gets damaged... So. My system has this: MovementComponent InputComponent Now maybe my design is off, but the InputComponent should say things like if (w key is down) add y speed to movement if (x key is down) Trigger primary attack This means that the InputComponent sort of relies on these other components. I have to do something alone the lines of: if (w key is down) { MovementComponent* entityMovement = mEntity->GetMovement(); if (entityMovement != NULL) add y speed to movement } which seems kinda crappy every update. Other options? Better design? Is this the best way? Thanks!

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