C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.

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alBufferData() sets AL_INVALID_OPERATION when using buffer ID obtained from alSourceUnqueueBuffers()

I am trying to stream audio data from disk using OpenAL's buffer queueing mechanism. I load and enqueue 4 buffers, start the source playing, and check in a regular intervals to refresh the queue. ...
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304 views

Separating Axis Theorem Issue

I am trying to create a 2d top down shooter using DirectX 11 (Windows 8 Store) and I am trying to implement OOBB collision using the Separating Axis Theorem. However I appear to have run into an ...
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290 views

Implementing Dead Reckoning in a Winsock server

I'm having a little difficulty understanding how I implement Dead Reckoning in my Server-Client Winsock game. I've been looking on the internet for a decent explanation that explains exactly: When ...
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649 views

Cocos2d-x CCFollow Zooming issue

Hi I am currently building a cocos2d-x game which incorporates pinch zoom using CCLayerPanZoom class which can be found here The problem is basically when using CCFollow and zooming and out, it does'...
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208 views

Radiosity using a hemisphere

I'm working on a radiosity processor. I'm projecting scene geometry onto a hemisphere at a high order of tessellation during a visibility pass onto a 1024x1024 render target. The problem is that the ...
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839 views

How do I mix 3D skeletal animations?

I'm trying to create a 3D-model skeletal animation system for C++/Open GL. I would like to be able to mix animations by allowing animations to only affect specific bones. My game has ride-able ...
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554 views

Bullet Physics Simulation Running Slow

I'm in the process of converting my game engine from java which used the LWJGL and JBullet to c++. However, when I was implementing Bullet physics my simple simulation of a box dropping from specified ...
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289 views

Rotate a point in 3D space with sine and cosine

I got my camera controlled by the mouse. Now I want a sphere to be always in the center of my view(just for testing). I tried that by assigning the sine of the Y rotation of the camera times 10 as the ...
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223 views

Box Zoom - Fit to rectangle

I want to box select a section of my screen and then zoom in that selection. So I have four corner points (my rectangle which I can drag with the mouse) in pixel coordinates. I have a perspective ...
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1k views

Creating a new GLFW window and re-using the old context causes crash

I am using GLFW 3.0.2 and when I want to switch the application to fullscreen, I create a new window and intend to use the OpenGL context of the old window so I don't have to reload all the meshes, ...
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298 views

GLX/X11 Changing the rendering resolution

I have made a simple application that creates a window with an OpenGL 4.2 context and takes user input. I have implemented making the window go fullscreen with XRandR and can change the display ...
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434 views

2D Camera transformation sidescroller

i am currently trying to dive into 2D programming with DirectX, especially bulding a tile based sidescroller. I have worked with some chapters from a book (Advanced 2D Game Development) but always ...
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193 views

OpenSceneGraph, multiple instances of a model

Im working on my first project using OpenSceneGraph. The project is a model flight simulator for one of my university courses, I want to be able to load airplanes (consisting of multiple models) and ...
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386 views

Why is my XInput gamepad press stamp not working?

I'm trying to add basic gamepad input to my c++ DirectX game but i'm having some trouble creating a press stamp (registers the press only the first time it's pressed if button held down). The entire ...
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195 views

Masking a CCLayer

I have a CCLayer (itemLayer) that has a bunch of CCMenuItemImage (itemButton) objects in it placed vertically in a column. These itemButton objects go way past the bounds of the screen and the ...
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176 views

IwGame (Marmalade): Does CIwGameSprite support SVG? How?

I have a small question about Marmalade IwGame engine. Does the CIwGameSprite support SVG (I've read that yes it does) If it does support SVG, how does it handle it, Does it convert that Vector ...
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372 views

Sketchy results from ray-plane intersection code

I've set up a demo with simple first-person controls using C++ and OpenGL, and it seems to work reasonably well. My goal is this: when the player looks at a plane and clicks the left mouse button, ...
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244 views

Help with Windows RawInput

I am having some trouble to receive and interpret mouse movement data from RawInput. Generally mouse input seems to work, I can query mouse buttons and receive updates of mouse movement. The problem ...
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269 views

UDK and Protocol Buffers

Actually two questions: Can I use TCP sockets in UDK to implement my own networking protocol? (I guess TCPLink is an answer) Is there any way I can user Protocol Buffers inside UDK? Or anything like ...
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675 views

Algorithm for potential fields

Rather than computing potential fields in a grid and performing a lookup for them, I've decided to query the potential fields at a given point in 3D space by simply querying all the objects in a ...
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620 views

Joint constraints in PhysX

I'm trying to use PhysX for my physics engine. I'd like to use spherical joints, but I'm having trouble with the constraints. All of the examples that I've found refer to SDK v2.8. I'd like to ...
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38 views

UE4: Multiplayer Projectile Hit Detection Problem

I'm trying to do Projectile Hit detection in multiplayer game. I'm using next approach: On the server side I'm storing all character's positions with world timestamp(PositionUpdated method). When ...
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44 views

Cocos2d-x v3.12 compile fails

Question duplicated from Stackoverflow, sorry don't know how to move questions between stack sites. Recently updated Cocos2d-x to v 3.12 and created the "Hello World!" project but the CLI command ...
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20 views

Passing heightmap data to btHeightfieldTerrainShape constructor

I was searching for a couple of hours, but I didn't find final solution, after trying many ways. I'm trying to get heightmap heights data, and pass it to btHeightfieldTerrainShape. Let's say my ...
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35 views

How to create a rectangular grid of triangles in openGL

I'm using OpenGL, GLFW and GLEW to create a simulation of water waves for a school project. I'm using a textured grid and will manipulate said grid in the vertex shader. I tried to create the grid by ...
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58 views

GUI, interface/listener equivilent in c++

brief intro I am currently working on a game engine using SFML for a small project, Coming from Java I know a fair bit but unfortunately I have come across a lot of snags (to be expected when ...
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24 views

Bullet Physics: 2dArray into Collisionshape

I'm fairly new to bullet physics and I am wondering how to make a collisionshape out of an 2dArray(x,y) with height informations. I figured out I have to use either btBvhTriangleMeshShape or ...
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19 views

rendering moving terrain using midpoint displacement algorithm in sdl

This is in addition to the question I asked over here. midpoint displacement algorithm in sdl. The answer there helped me but I am facing another problem regarding the moving part. The terrain ...
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49 views

Resolving 2D AABB collision problem

I'm adapting the collision resolution code from learnopengl.com for my own engine and since this my first time doing this, I have a problem with how the player position is being modified by the ...
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38 views

sphere to sphere interpolation

I am at the moment trying to come up with an scheme that interpolats between a current state and a desired state. Each state consist of an 3d coordinate and a rotation matrix, orienting an camera ...
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24 views

cocos2d c++ Collision between edge physics bodies

I'm working on a game with cocos2d, need to detect collision between two PhysicsEdgeBody. I've created an EventListener for contact and added it to the layer i'm working on, PhysicsContact and ...
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14 views

Update constraint pivot position in world space in Bullet Physics

The task is: we have N rigid bodies connected with each other by point-to-point constraint. In every frame we have new position of point where first rigid should be attached in world space. How to ...
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37 views

Box2D + SDL - Weird body positions

I'm having a problem where either my sprite, or my body position is off. Here's a picture so you can see exactly what's going on : (The box has stopped on the picture, probably because it's colliding ...
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46 views

3d rotation of a cube using DirectX

I can't solve an apparently simple problem: i have a cube, similar to the one in the following picture I've tried to write a small demo where i can rotate the cube by dragging the mouse, but i can'...
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33 views

Defining camera/view space

Im working on expanding my camera class, but having trouble defining camera/view space in the manner of this diagram: What Im trying to achieve is to define the camera as a true object much like a ...
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63 views

Weird Collisions in ODE

I'm trying to get a basic OBB/OBB Collision System working. For this I use ODE. My problem is: Whenever I use the dSpaceCollide and pass in my Space and my Callback, my Callback shows me, that a ...
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16 views

Config SFML in QTCreator with file.pro

I know that are a method with cmake , but i wouldlike config my project in Qtcreator usinig qmake and my doubt is what my file .pro must have for work it ?. I will run in windows , maybe later linux . ...
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28 views

OBB Collision Intersection Problem

I'm trying to create OBB's around objects and then collide them using DirectX 11 and C++. It all works fine until I rotate one (or more) of the boxes and then the collision detection returns true too ...
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47 views

OBB/OBB Test in OZCollide

I want to know if anybody, who tried OZCollide (http://www.tsarevitch.org/ozcollide/), knows whether OBB vs. OBB Tests are possible or not. I know there is a AABB vs. OBB function but I can't find one ...
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15 views

Unreal Engine Physics creation is slower in Editor

I just figured out that when UPrimitiveComponent::CreatePhysicsState() is called, it calculates the mass, but only in editor, also when i build for non-editor it is faster (standalone) this is not ...
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58 views

vertex shader doesn't work properly

Linux, OPenGL 3.0, GLSL 130 (Intel card) I'm learning OpenGL and successfully rendered a triangle, but as soon as I create the matrix of projection I get an error. The shader compiles and works ...
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18 views

Fbx Importer/exporter groups

I want to create Groups (empty transforms in a Scene Graph) but i find no documentation on how to go about it, to create a fbx loader which can create groups or show the different objects in that ...
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27 views

Box2d capsule stumbles on ground

I am working on a game with box2d and sdl. I Created a character and some boxes as ground, but faced the problem where the character would run a few meters, and stumble on one of the boxes' edge. I ...
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32 views

Jumping to tiles in y coordinate before displaying all tiles in x?

I am learning how to load in tile maps and I have successfully done so, sort of. The problem is that the program is jumping to the tiles in the y coordinate before displaying all the tiles in the x. ...
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95 views

Boost vs cereal for Serialization

I am preparing to make a simple 3D game with OpenGL and one thing that came up pretty quickly was storing the required data. If I recall correctly, Java has a class called "ObjectWriter" which ...
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35 views

Non-real time simulation of overlapping repulsive balls

I want to make a non-real time simulation of overlapping repulsive balls, initially in 2D and later in 3D. With "non-real" I mean that rendering is not needed after each time step. First of all, ...
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45 views

C++ render Umlaute with Spritefont

I have a SpriteFont-Class and with that I render text to my game. Now my problem is, that it doesn't render Umlaute like ä, ü, ö, ß... Because I am German it is very important, that I can render these ...
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38 views

Methods to load .fbx using FBX SDK in binary data chunk

I am trying to acquire model information from .fbx in binary data chunk to see if loading time can be faster than regular accessing. For this purpose, I found a sample called "My Own Reader/Writer" ...
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27 views

Why does Intel Graphics Monitor crash after I set a depth stencil state in my Direct3D 11 application?

I'm programming a managed Direct3D 11 application with SlimDX. I want to use Intel Graphics Monitor to capture draw calls for a single frame. When I try to set a depth stencil state my application ...
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22 views

Cocos2dx : Lua with C++: lua_pcall closing my app

I'll try to explain what is happening with my current project: I want to make some custom scripts myself without using the lua script engine from cocos2dx, so I linked lua51.lib on Linker->Input, and ...