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• Help me choose an engine

  - by Gjorgji

  So far i've been trying to make a RTS in pygame but, i feel like 2d is not enough and pygame has me do a lot of stuff that i would not like doing. What i would like doing is working on the AI gameplay and such and not worying too much about how to display stuff,physics and the like too much. So far Unity has boo which is supposed to be similar to python i wonder if that could work. How similar is it to python should i use this? Other options as far as i can see are ogre3d python bindings and UDK. Which would best suit my needs?

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• Android - Unity3D: setVisibility(View.VISIBLE) crashes

  - by Kazoeja

  I have a unity project and I use a Android (java) plugin to get camera data. I draw this on a TextureView. I want to hide/show this view when I press a button in unity. But my app crashes when I setVisibility onCreate UnityPlayer.currentActivity.addContentView(texView, new FrameLayout.LayoutParams(400, 400)); java: public void HideVideo() { //Hide view _TextureView.setVisibility(View.INVISIBLE); } Is there an extra function I need to call, or may I only call it on certain times? None of these thins work, they all make my app crash. _TextureView.setVisibility(View.INVISIBLE); _TextureView.setActivated(false); _TextureView.setAlpha(0); _TextureView.setTranslationY(-1000);

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• How to update a mesh position base on a pressed key?

  - by steven166

  I have a mesh loaded from a file, like a tiger mesh. At the first time it locates at A position, then if I press a left key, it will moves to B position but the problem is if I press a left key one more time, it will move from B position to C position. It means that the amount I want to move the mesh will base on the current position instead of the first time rendering position. I can do it if I have a array vertices then I just update the vertex buffer, but a mesh loaded from a file does not have an array vertices, so how to do it? Anybody help me, please?

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• How do you set the movement speed of a sprite?

  - by rphello101

  I'm using Slick 2D/Java to play around with graphics. Getting an image to move is easy: Input input = gc.getInput(); if(input.isKeyDown(sprite.up)){ sprite.y--; }else if (input.isKeyDown(sprite.down)){ sprite.y++; }else if (input.isKeyDown(sprite.left)){ sprite.x--; }else if (input.isKeyDown(sprite.right)){ sprite.x++; } However, this is called on every update, so if you hold up, the sprite moves to the edge of the screen in a few hundred milliseconds. Since coordinates are integers, I can't add less than 1 to slow the sprite down. I'm assuming I must have to implement a timer of some sort or something. Any advice?

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• Creating a game engine in C++ and Python - Where do I start? [closed]

  - by Peter

  Yes, you read correctly, how does humble ole Peter here make an engine using the 2 languages he's proficient in to an extent. I have more than enough time and wish not to use any 3rd party "stuffs" (engine parts like methods, classes etc etc, fully from scratch). If anyone could PLEASE explain how this is done then i will love you forever. Thanks for reading, hoping for some productive answers. Thankyou very much. EDIT: Re read what i've said for the 4th time, forgot to mention; 2D sprite based, with voxels and physics. :D

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• How can I ensure reasonably spaced out enemies

  - by Samuraisoulification

  I have a simple javascript game and I'm initializing their positions on the y axis using random numbers. How can I ensure that they are reasonably spaced apart? My simple algorithm is: y = (Math.random()*1000%600); However I frequently get enemies almost directly on top of each other. This is a huge problem for the game, since it's a word game and the enemies have text on their center, that if overlapped makes them impossible to kill since you can't see the words. Any advice would be appreciated! I'm pretty new to making games in general so this has all been a learning experience for me!

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• How to reset a List c# and XNA [on hold]

  - by P3erfect

  I need to do a "retry" option when the player finishes the game.For doing this I thought to reset the lists of Monsters and other objects that moved at the first playing or which have been "killed".for example I have a list like that: //the enemy1 class is already done // in Game1 I declare it List<enemy1> enem1 = new List<enemy1>(); //Initialize method List<enemy1> enem1 = new List<enemy1>(); //LoadContent foreach (enemy1 enemy in enem1) { enemy.Load(Content); } enem1.Add(new enemy1(Content.Load<Texture2D>("enemy"), new Vector2(5900, 12600))); //Update foreach (enemy1 enemy in enem1) { enemy.Update(gameTime); } //after being shoted the enemies disappear and i remove them //if the monsters are shoted the bool "visible" goes from false to true for (int i = enem1.Count - 1; i >= 0; --i) { if (enem1[i].visible == true) enem1.RemoveAt(i); } //Draw foreach (enemy1 enemy in enem1) { if(enemy.visble==false) { enemy.Draw(spriteBatch, gameTime); } } //So my problem is to restart the game. I did this in Update method if(lost==false) { //update all the things... } if(lost==true)//this is if I die { //here I have to put the code that restore the list //I tried: foreach (enemy1 enemy in enem1) { enemy.visible=false; } player.life=3;//initializing the player,points,time player.position=initialPosition; points=0; time=0; }//the player works.. } } they should be drawn again but if I removed them they won't be drawn anymore.If I don't remove them ,instead, the enemies are in different places (because they follow me). Any suggestions to restore or reinitialize the list??

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• Best way to develop a level from Top down image using 3dmax

  - by fire'fly

  I have to create a game level from a top down view of an area. I used a plane converted to an editable poly to do the job. I used edges to create the top view of roads, walkways and parks so that i can extrude/edit them later. My problem is the curves in the road look blocky I tried appying mesh smooth modifier on the final model but that interfered with material mapping. Again i tried it on the plane without the extrusions and still the modifier does not work(The roads loose their shape). I know one way to solve the problem is to add more vertices on the curve and transform their location to create a more natural curve but i have a lot of curves so before doing it manually i need to know if there is a tool that refines the curves. Also i need to know if there is a better or proper way of doing the task.

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• Can XNA Content Pipeline split one content file into several .xnb?

  - by Zeta Two

  Let's say I have an xml file which looks like this <Weapons> <Weapon> <Name>Pistol</Name> ... </Weapon> <Weapon> <Name>MachineGun</Name> ... </Weapon> </Weapons> Would it be possible to use a custom importer/writer/reader to create two files, Pistol.xnb and MachineGun.xnb which I can load individually with Content.Load()? While writing this I realized I could just import a Weapon[] list and split them up with a helper, but I'm still wondering if this is possible?

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• 3D Mesh Collision Help

  - by BlackAfricano

  I am new to XNA (I have only been working in it for a countable number of weeks) as well as to these forums (I have only made 1-2 other posts), so this may seem like a strange request, but I am wondering if anybody knows about more advanced collision in XNA. So far I have only been able to figure out BoundingSphere's which seem to be the simplest of the methods, and I was thinking of looking more into BoundingBoxes because the game I have is a 2-3D platformer. The problem I realized was that if I wanted to get any more advanced than stages in the shape of a box, I would face some immediate dilemmas. I was hoping somebody here was knowledgeable on the subject and could inform me where I could get started learning how to do something like this: https://www.youtube.com/watch?v=ekMD_Gtt8d4 Although the game in this video isn't very pretty, the mesh collision looks like what I'm looking for. I am hoping for the most complete solution, if possible.

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• What is the best way to manage large 3d worlds (i.e minecraft style)?

  - by SomeXnaChump

  After playing minecraft I was marvelling a bit at their large worlds but at the same time finding it extremely slow to navigate, even with a quad core and meaty graphics card. Now I assume its fairly slow because: A) Its written in Java, and as most of the actual spatial partitioning and other memory management activities happen in there it would be slower than a native C++ version. B) They are not partitioning their world very well I could be wrong on both assumptions, however it got me thinking about the best way to manage large worlds. As it is more of a true 3d world, where a block can exist in any part of the world, it is basically a big 3d array [x][y][z], where each block in the world has a type (i.e BlockType.Empty = 0, BlockType.Dirt = 1 etc). Now I am assuming to make this sort of world performant you would need to: a) Use a tree of some variety (oct/kd/bsp) to split all the cubes out, it seems like an oct/kd would be the better option as you can just partition on a per cube level not a per triangle level. b) Use some algorithm to work out if the blocks within the scene can currently be seen, as blocks closer to the user could obfuscate the blocks behind, making it pointless to render them. c) Keep the block object themselves lightweight, so it is quick to add and remove them from the trees I guess there is no right answer to this, but I would be interested to see peoples opinions on the subject.

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• Inversion of control in Unity?

  - by user3206275

  I am semi-experienced .NET developer who has just began working with Unity. I am trying to decide on how to make IoC work in Unity 4.X ( I have not yet tested anything), and I wonder what are the good ways of achieving it. This post and its answers states that Ninject won't work with Unity, however it is old. Is it still true? If yes, what are other means of achieving IoC in Unity ? Edit 1 : I am targeting mainly Windows platform. So I don't need platform interoperability, I just need it to work.

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• I finished "Beginning Android Games", should I use its framework?

  - by orod

  I've worked through Mario Zechner's "Beginning Android Games" and have made my own pong and asteroids game using the framework used in the book. I have also downloaded the source code for Replica Island and am able to run that. I like Replica Island's framework over the one I made from reading the book. Some differences are that Replica Island uses different activities for each screen instead of Zechner's Screen class and that Replica Island can use a lot of textures and isn't limited to textures with dimensions of powers of 2. If I'm serious about writing games and apps for Android should I learn Replica Island's framework and use that instead of the one I made while reading Zechner's book?

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• have a problem with my 2nd quad bottom left vertex position ? weirdd

  - by RubyKing

  Hey all I'm just trying to add another quad to my frustum and when doing so I get this weird little error. What happens is the bottom left side of my quad seems to stick to the center point for no apparent reason that I can think of and or figure out from. has anyone else experienced this issue and knows a solution or would you like more information please do ask. here is my main.cpp file http://pastebin.com/g9q8uAsd I think its because of 2 different quad vertex array data is in the same array.

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• Knowledge of a Language vs. Games in Portfolio

  - by RedShft

  How important is the knowledge of a language versus the games that you have developed in your portfolio? To be more specific. Personally, I dislike C++ for several reason(mainly due to it's complexity, and pointers, and I prefer D as my language of choice thus far. Due to this, I've written two games in D instead of C++ that are my personal projects. Am I wasting my time with D? Should I start using C++ again? For reference, I have 6 months of experience in C++. It's the first language I learned. I have messed around with SDL/SFML and a bit of Direct3D with C++ as well. Even though I like D, i'd rather not waste my time learning it, if it in no way will help me get a job in the gaming industry.

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• How do I render from one render target to another?

  - by Chaotikmind

  I have two render targets: a fake backbuffer; a special render target where I do all my rendering. a light render target; where I render my light fx. I'm sure I'm rendering correctly on both. The problem arises when I overlay the light render target onto the fake backbuffer by drawing a quad covering it: DxEngine.DrawSprite(0.0f, 0.0f, 0.0f, (float)DxEngine.GetWidth(), (float)DxEngine.GetHeight(), 0xFFFFFFFF, LightSurface->GetTexture()); Regardless of what's in the light target, nothing is rendered onto the other target. I tried clearing the light target with full-white or full-black, but still get nothing. Fake backbuffer created with Direct3dDev->CreateTexture(Width, Height, 1, D3DUSAGE_RENDERTARGET, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &Texture, nullptr); Light render target created with Direct3dDev->CreateTexture(Width, Height, 1, D3DUSAGE_RENDERTARGET, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &Texture, nullptr); I also tried to create both with D3DFMT_A8R8G8B8, again without difference. Both targets have the same width and height. Only the fixed pipeline is used DirectX setup for rendering : Direct3dDev->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR ); Direct3dDev->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR ); Direct3dDev->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_NONE ); Direct3dDev->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_WRAP ); Direct3dDev->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_WRAP ); Direct3dDev->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE); Direct3dDev->SetRenderState(D3DRS_LIGHTING, false); Direct3dDev->SetRenderState(D3DRS_ZENABLE, D3DZB_TRUE); Direct3dDev->SetRenderState(D3DRS_ZWRITEENABLE,D3DZB_TRUE); Direct3dDev->SetRenderState(D3DRS_ZFUNC,D3DCMP_LESSEQUAL); Direct3dDev->SetRenderState(D3DRS_ALPHABLENDENABLE, true ); Direct3dDev->SetRenderState(D3DRS_ALPHAREF, 0x00000000ul); Direct3dDev->SetRenderState(D3DRS_ALPHATESTENABLE, true); Direct3dDev->SetRenderState(D3DRS_ALPHAFUNC,D3DCMP_GREATER); Direct3dDev->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA ); Direct3dDev->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA ); Direct3dDev->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE); Direct3dDev->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE); Direct3dDev->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE); Direct3dDev->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE); Direct3dDev->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE); Direct3dDev->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE); Direct3dDev->SetTextureStageState(0, D3DTSS_RESULTARG, D3DTA_CURRENT); Direct3dDev->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU); //ensure the first stage is not used for now Direct3dDev->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_DISABLE); How can I do this right?

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• Limiting the speed of a dragged sprite in Cocos2dx

  - by Frozsht

  I am trying to drag a row of sprites using ccTouchesMoved. By that I mean that there is a row of sprites (they are colored squares) lined up next to each other and if I grab one with a touch the rest follow it. However, if the sprite that is selected by touch moves too fast it creates a slight gap between it and the following sprites. How do I go about limiting the speed that I can drag the sprite with ccTouchesMoved? This is the only solution I could think of to my problem. If anyone has another suggestion to prevent this sprite gap from happening I would appreciate it.

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• Why doesn't this ContentLoader project (VS2010 e) recognize Microsoft.Build.dll?

  - by IAbstract

  I am working with an XNA content loader sample. In the references for the project (VS 2010 Express) there are: Microsoft.Build Microsoft.Build.Framework //as well as the standard XNA framework and graphics references To emulate this project, I am trying to first add a reference to Microsoft.Build.dll. But Visual Studio warns me that it cannot load the .dll. I looked at MSDN and the document referenced Microsoft.Build.Evaluation. This is suppose to be available in the Microsoft.Build.dll and then I'll have access to the Project class. Has anyone had any experience with this?

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• How do you blend multiple colors in HSV (polar) color-space?

  - by Toxikman

  In RGB color space, you can do a weighted multiple-color blend by just doing: Start with R = G = B = 0. Then we perform a blend at index i using a set of colors C, and a set of normalized weights w like so: R += w[i] * C[i].r G += w[i] * C[i].g B += w[i] * C[i].b But I'd like to interpolate the colors in the HSV color-space instead, so that saturation and brightness are uniform across the interpolation. I know I can blend saturation and brightness in the same way as above, but the HUE component is an angle around a continuous circle, since HSV is essentially a polar coordinate system. Blending only two HSV colors makes sense to me, you just find the shortest arc around the circle and interpolate between the two hues. But when you attempt to blend more than 2 colors, it becomes a bit of a puzzle. You have to handle anomalous cases, like 4 equally-weighted colors with a hue at 0, 90, 180, and 270 degrees. They basically cancel each other out, so any hue will do. Any ideas would be greatly appreciated.

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• Random generation of interesting puzzle levels?

  - by monsterfarm

  I'm making a Sokoban-like game i.e. there's a grid that has some crates on it you can push and you have to get the crates on crosses to win the level (although I'm going to add some extra elements to it). Are there any general algorithms or reading material I can look at for how I could go about generating interesting (as in, not trivial to solve) levels for this style of game? I'm aware that random level generators exist for Sokoban but I'm having trouble finding the algorithm descriptions. I'm interested in making a game where the machine can generate lots of levels for me, sorted by difficulty. I'm even willing to constrain the rules of the game to make the level generation easier (e.g. I'll probably limit the grid size to about 7x7). I suspect there are some general ways to do level generation here as I've seen e.g. Traffic Jam-like games (where you have to move blocks around the free some block) with 1000s of levels where each one has a unique solution. One idea I had was to generate a random map in its final state (i.e. where all crates are on top of their crosses) and then the computer would pull (instead of push) these crates around to create a level. The nice property here is that we know the level is solvable. However, I'd need some heuristics to ensure the level was interesting.

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• How to determine which thrusters to turn on to rotate the ship?

  - by migimunz

  The configuration of the ship changes dynamically, so I have to determine which thruster to turn on when I want to rotate the ship clockwise or counter clockwise. The thrusters are always axis aligned with the ship (never at an angle) and are either on or off. Here's one of the possible setups: What I've tried so far is to visualize the firing vector and the direction vector to the center of mass of the ship: Unfortunately, I didn't get very far with that.

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• Installing Windows Platform SDK Problem [on hold]

  - by user1879097

  I cannot seem to install the windows platform sdk when i have visual studio 2010 installed,i followed the error code the sdk was getting and it said i need to unistall the 2010 redistribute runtimes,i did that and it has still not fixed the problem,this is very anoying as i have tried different things and been at it for atleast 5 hours now,did anyone else get this problem and know a work around? This is the order i tried install vs 2010, remove redis runtimes, install platform sdk (failed), install redis x86/x64, install service pack 1 for vs Thanks

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• Toggle Fullscreen at Runtime

  - by sharethis

  Using the library GLFW, I can create a fullscreen window using this line of code. glfwOpenWindow(Width, Height, 8, 8, 8, 8, 24, 0, GLFW_FULLSCREEN); The line for creating a standard window looks like this. glfwOpenWindow(Width, Height, 8, 8, 8, 8, 24, 0, GLFW_WINDOW); What I want to do is letting the user switch between standard window and fullscreen by a keypress, let's say F11. It there a common practice of toggling fullscreen mode? What do I have to consider?

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• Whats the right program for me?

  - by andyphillips20

  I would like to learn C++ so I can get a job in the game industry, but there are so many options it a little confusing. I know most of you will say I should read up on C++ before attempting to program it but I learn best by doing things rather then reading. That being said I don't understand some of the thing suggested on other questions, because I've read a few trying to find whats right for me, so putting things in the simplest terms would be helpful. I've been making a couple of games 2d using gamemaker and if theres a C++ equivalent that would be perfect, but if not possible I would like an IDE that allows me to easily continue making 2d games, and is fairly simple to learn. Having a 2d sprite editor would be a nice plus but I can understand if its not every thing I want in one program

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• How do I do a game loop in c99?

  - by linitbuff

  I'm having trouble with how to structure a game using c99. I've seen a few tutorials on making a game loop, but they are all done with c++ and classes. My main problem seems to be moving data around between the functions without creating a mess, and what stuff to put in what header files etc. Do I just do something similar to the c++ loops, and create a class-like header with a structure containing all items needed by more than one of the functions, along with the prototypes of said functions, and include the header in each function's header file? Then, in the main function, instantiate the structure and pass a pointer to it to every function in the loop? Is this ok, or is there a better way to do it, and are there any good 'c' specific tutorials available? Cheers

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