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

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79 views

Lua Implementation

I'm struggling to get Lua implemented into my game engine. I've read dozens of blogs and articles revolving around how to wrap C++ classes and I seem to have hit a wall. No matter how I structure the ...
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0answers
24 views

SDL_AddTimer + SDL_GL_MakeCurrent not working on Windows

I'm messing around with C++, OpenGL and SDL doing a game that should be able to run in Windows and Mac OS X. I have a problem that only happens on Windows. Let me describe the scenario. First I ...
2
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0answers
645 views

Arcball 3D camera

I have checked multiple threads before posting, but i havent been able to figure this one out. Ok so i have been following this tutorial, but im not using glm, ive been implementing everything up ...
2
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0answers
213 views

Use quaterions to move the camera direction according to mouse movement

I am trying to use quaterions to move the camera direction vector in the following way. This code is perfectly working glm::quat temp1 = glm::normalize( glm::quat((GLfloat)( ...
2
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0answers
372 views

Not able to change the background of the scene in cocos2dx android

I have started Game Development using Cocos2d-x. And started with HelloWorld sample game. I am able to run this sample game. But when I try to change the Background Color, I am getting error in ...
2
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137 views

Bullet btGeneric6DofConstraint and btGeneric6DofSpringConstraint constructor arguments

I have a very simple (and maybe too primitive to post here but I’ll try anyway :P) question about Bullet constraints. What are arguments const btTransform &frameInA, const btTransform ...
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781 views

2D water shader in SFML

I want to implement the algorithm for a 2D water surface described here and here. Before somebody finds out, beats me up and deletes this, I'm gonna say it myself. I posted this question over at ...
1
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0answers
60 views

Assimp skeletal animation matrices

I startded to make an assimp only opengl skeletal animation demo. For that I used this: http://sourceforge.net/p/assimp/discussion/817654/thread/5462cbf5 And something is not correct in bone matrices. ...
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0answers
167 views

Get derived Pawn from collision actor in UE4

I am trying to build a basic RTS unit selection but any time I try to possess the target pawn it crashes. The pawn in the collision is a blueprint derived directly from APawn. Am I casting from the ...
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0answers
46 views

How to Calculate K-Dops Faster

Ok so I have my general understanding of K-Dops for collision detection. I understand how to calculate them. I also understand the super slow way of recalculating them. Example: I have a simple ...
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0answers
25 views

FBX Importer - Vertex Color

I imported vertex positions, indices and normals successfully in OpenGL using fbx sdk, but I just can't figure out how to import vertex colors. I tried to fetch the pointer to array of colors trough ...
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0answers
73 views

Weird y offset when using custom frag shader (Cocos2d-x)

I'm trying to mask a sprite so I wrote a simple fragment shader that renders only the pixels that are not hidden under another texture (the mask). The problem is that it seems my texture has its ...
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38 views

Bullet Physics ConvexDecomposition?

I've looked at Bullet Physics ConvexComposition Demo and would like to implement that in my game but the code is so undescriptive and it's hard to understand what is going on. Would any of you people ...
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0answers
47 views

AddFontMemResourceEx and D3DXCreateFont corruption

I'm trying to load a font from a buffer using AddFontMemResourceEx and then creating a D3D font with D3DXCreateFont. This works fine on every platform except Windows XP, where it causes the wrong ...
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0answers
58 views

Different way to pass uniforms to seperate draws in glMultiDrawElementsIndirect

Given OpenGL version 4.3 and GLSL 430, what would be the best way to pass a matrix to each model in a draw call to glMultiDrawElementsIndirect? I am thinking of going the way of a TBO and indexing it ...
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0answers
54 views

Text alignment in OpenGL with FreeType2

I'm trying to implement font rendering and have got into some trouble with glyph metrics. Here's the code where I get the metrics: Glyph gl; gl.width = face->glyph->metrics.width / 64; ...
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0answers
35 views

How do I detect image clicks in Dark GDK?

I am trying to determine if an image has been clicked, using the Dark GDK game engine. I've found no methods in the engine that do this. I would rather not brute force this with a large nested ...
1
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0answers
150 views

opengl volumetric billboard implementation: general idea + geometry shader

A while ago I decided to implement the volumetric billboards technique in my university project (C++ & OpenGL 4.3). I passed the subject but failed to implement the mentioned technique. I'd like ...
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0answers
95 views

2D Collision Resolution getting stuck on walls

I've been writing this collision detection system using a tutorial from an article I read and I just cannot for the life of me get it to function 100% correctly. Here's the code for starters: ...
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0answers
132 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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0answers
350 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 ...
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0answers
284 views

c++ opengl unproject not working

first of all, sorry for the bad english. I need to convert my mouse coordinates to world coordinates, I'm trying to use the glm unproject method. 1280x720 is the size of the window, It's hard coded ...
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0answers
260 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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0answers
161 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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0answers
123 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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0answers
387 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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0answers
176 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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234 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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0answers
106 views

How to correctly synchronize a shared surface?

I am trying to share a direct3d9 surface between two processes. One process (let's call it A) writes to the surface, and the other (B) displays it on screen. Currently, process A does a StretchRect of ...
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0answers
108 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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0answers
198 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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0answers
338 views

Optimal OpenGL 2D Sprite Batching (Best Practice)

I am working on simple 2D engine using OpenGL (3.3+) for rendering and was wondering what the optimal method of sprite batching would be. I plan to put all sprites into one (or fewer) texture atlases. ...
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0answers
125 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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0answers
111 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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0answers
172 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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0answers
166 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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0answers
123 views

OpenWorld SceneGraph management and optimization

I have a SceneGraph class which for now is just a simple list implementation, and the only optimization I've planned so far is a check is something like this: //GetDistance returns the distance ...
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0answers
373 views

How to pick a 3D object with known mouse coordinates if the camera is rotated 60 degrees?

I am making a simple game engine for a simple RTS game and would like to be able to pick a cube and move it around with the mouse coordinates. The problem is that my camera is rotated 60 degrees just ...
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0answers
94 views

Audio Panning using RtAudio

I use Rtaudio library. I would like to implement an audio program where I can control the panning (e.g. shifting the sound from the left channel to the right channel). In my specific case, I use a ...
1
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0answers
253 views

DX9 Deferred Rendering, GBuffer displays as clear color only

I'm trying to implement Catalin Zima's Deferred Renderer in a very lightweight c++ DirectX 9 app (only renders a skydome and a model), at this moment I'm trying to render the gbuffer, but I'm having a ...
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0answers
126 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 ...
1
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0answers
249 views

Full screen shader causes performance hit

I basically want to have a shader run that can do something like toon shading, or grayscale the whole screen, or radial lighting. To do this, I create a new bitmap each time the display resizes that ...
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0answers
380 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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0answers
219 views

Debugging Minimum Translation Vector

I implemented the minimum translation vector from codezealot's tutorial on SAT (Separating Axis Theorem) but I'm having an issue I can't quite figure out. Here's the example I have: As you can see ...
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0answers
434 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 ...
0
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0answers
25 views

lodepng “undefined reference” (MinGW)?

I'm trying to use the library lodepng (lodev.org) in a C++ project. The actual library is a header and a C++ source file so the error I'm getting is confusing me. When I try reference a function or ...
0
votes
0answers
22 views

cocos2d-x .. How to detect which sprites are underneath a touch event

I was wondering what the best solution is in the following scenario: Lots of sprites floating around on screen. A user can touch one sprite and drag to another sprite. Throughout this entire time, I ...
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0answers
21 views

Video cutscene on Mac using QTKit?

My game needs to display a video file. The game engine I am using allows extensions via .dynlib files (MacOS dynamic libraries). I changed my source's extension to .mm so I can use QTKit, but it ...
0
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0answers
106 views

Problem when using two different shaders

I have created a simple shader for drawing my scene in OpenGL. When another shader was introduced, a problem appeared. I use the first shader and draw few objects in the scene. Then I use the second ...
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0answers
32 views

DX9 system crash on Intel Atom CPU Z530 with Intel GMA 500

our project has to run on a very specific hardware, which is listed below: WinXP Professional 32bit Intel Atom CPU Z530 with Intel GMA 500 (2 CPUs, 1.6Ghz, 512 MB RAM) DX 9.0c 800 MB swap memory ...