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

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8 views

What does this piece of Tiled C++ code do?

I'm trying to figure out the purpose of this peice of code found Here const int gid = data[i] | data[i + 1] << 8 | data[i + 2] << 16 | data[i + 3] ...
7
votes
3answers
580 views
+100

How to solve the big video memory requirements in 2d game

We are developing 2d game (Factorio) in allegro C/C++ and we are facing the problem with increasing video memory requirements as the game content increases. What we currently do is, that we gather ...
1
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1answer
114 views

How do I fix my planet-facing camera?

Summary I'm having trouble implementing a camera controller suitable for first person use around a planet. The camera needs to be oriented correctly according to gravity (vector from camera ...
0
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0answers
13 views

using eclipse instead of visual studio for cocos2d-x project

im using coco2d-x v 3.0 i made a new windows project to test it and it is working but when i try to build and run a project using this command cocos run -p win32 it is print this error it seem ...
0
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0answers
19 views

Bounding box center after transformation - want degree values for GUI

Similar to my previous question, I have a bounding box that I have transformed and scaled. Now, I want to get its center by doing this operation and store this value. bbCenter = glm::vec3(bbMin_x + ...
0
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0answers
15 views

Problem with Cocos2D engine [on hold]

currently i'm using cocos2d engine, but when i try to run the project i see this error message: #include "glfw3.h" fatal error: glfw3.h: No such file or directory i am already installed GLFW with ...
0
votes
1answer
20 views

Adding Components (classes) to unordered_map in Entity? (Possible typeid as key issue)

I've got a little test put together that has a couple simple Components that are supposed to be added to an Entity, but the addComponent function isn't working; I think it's got something to do with ...
0
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0answers
40 views

Question regarding the separation of input , logic and animations. (SFML)

I am completely new to game development and I've been trying to make a 2d game as a project for the past couple of days. I am using SFML and so far things are going well, but I am not sure how I ...
0
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0answers
146 views

cocos2d-x-3.0rc0b Build fails [on hold]

I have created a cpp Cross platform project with cocos2d-x-3.0rc0 on windows8 , but i can't build the android project. I have the following result: C:\home\MyGame\proj.android\proj.android>python ...
1
vote
2answers
76 views

glGenVertexArrays causes crash

My code keeps crashing at runtime, I have done some creative debugging and determined that it was the glGenVertexArrays that was causing the crash, I've looked around and come across some answers that ...
-1
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0answers
35 views

how to seperating raw input devices into classes?

Is there a way too seperate raw input keyboard, mouse and controller in classes so i can use them independent of each other(something like xinput for xbox controllers).
0
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0answers
8 views

AntTweakBar compilation error [on hold]

When I try to add a button to the bar that calls a function when clicked, I interestingly get a compile error. The following is my code, and compilation is due to TwAddButton function call. The error ...
0
votes
0answers
31 views

Focus a turntable style camera on an object

I have a turntable style camera in the maya / blender / alembic / opensubdiv example. I want to be able to match the camera translation to any objects translation pivot point in the scene and then ...
35
votes
7answers
4k views

How does Lua work as a scripting language in games?

I'm a little hazy on what exactly Lua is and how a game that is programmed in C++ would use it. I'm asking primarily about how it is compiled and run. For instance when you use a program written in ...
1
vote
1answer
97 views

Scrolling with SDL2 & Box2d - My Camera isn't keeping up with my player

I'm trying to get a game on the google play store before I'm 40 (long held dream to publish a game since the days of the speccy), I have just over a month to go so it's not looking good! Foolishly I ...
2
votes
1answer
111 views

How can I implement a dialogue where the words appear as if they were being typed?

I'm planning on putting a dialogue system into my game, I don't really work with surface so my way of implementing SDL_Ttf is by turning it into a texture, in other words, every paragraph would be ...
3
votes
1answer
63 views

Should my GLSL Shader object/wrapper encapsulate loading/setting a VertexArrayObject?

I am working on a 2D game in C++, with a simple rendering layer over OpenGL. I have a wrapper for GLSL shaders and shader programs, these wrappers encapsulate shader objects into C++ classes and ...
0
votes
0answers
29 views

Loading Wavefront Data into VAO and Render It

I have successfully loaded a triangulated wavefront(.obj) into 6 vectors, the first 3 vectors contain the locations for vertices, uv coords, and normals. The last three have the indices stored for ...
3
votes
3answers
132 views

Make openGL program only update every 1/60 seconds

I'm learning C++ and openGL and have this program as a result from tutorials and playing around. The problem is that the main loop is running at "full speed", making the program unnecessarily cpu ...
0
votes
0answers
21 views

issues involved in the multi player web gaming? [on hold]

i want to develop counter strike game as a web application any one who is interested should be able to login to the site with his registered credentials and play, To convert CS in to a web based game ...
2
votes
1answer
139 views

C++ FPS game collision detection with partitioning system or physics engine?

I'm working on a small FPS game (as a hobby and for learning purposes, nothing else) built with C++ in OpenGL (from scratch). Documenting online on the kind of strategy someone would approach with ...
0
votes
1answer
45 views

Point rotation around point, accuracy question

I study OpenGL ES 2.0. But I think it's more a C++ question rather then an OpenGL one. I am stuck with the following rotation question: It is known, that rotation transformation can be applied using ...
1
vote
2answers
207 views

Orthographic Zooming with 0,0 at top/left

I'm trying to implement zooming on my 2D game. Since it's using orthographic projection, I thought it would be easy to implement zooming. After looking around the internet, I found a bunch of ...
5
votes
5answers
587 views

C++: Game State Logic other than switch statement?

Executive summary Are there any good tutorials on Game State FSMs, particularly OOP/OOD-based and not switch-statement-based? Summary Is there a practical process for creating a game state engine ...
0
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2answers
43 views

irrlicht: drawing two textures with draw2dImage issue

Im just starting out with irrlicht (and c++) for 2d development and I followed the 2d tutorial, so I am able to draw a 2d texture on the screen (With draw2DImage) this seems to work fine. So I made a ...
0
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0answers
37 views

Mouse input that 'sucks in' particles [on hold]

I'm having trouble figuring out the equations behind the title, I did exactly this using OpenGL's fixed function pipeline, but while transferring this over to the programmable pipeline i'm running ...
0
votes
0answers
31 views

Data structure for storing game objects in a tile based game [closed]

This is my first time developing a game using C++, so I want to do it right. I decided to start with a tile based game since it has always seemed simpler to me. Previously the way I managed objects ...
0
votes
2answers
130 views

OpenGL - How can I make the edges of this textured circle smoother?

I'm building a game and I've applied a certain texture (RAW file) to a circle (GL_POLYGON) in OpenGL. It loads correctly, with the right size and all, but the edges seem a bit jagged and I would ...
7
votes
1answer
2k views

OpenAL - alGetSourcei and AL_BUFFERS_PROCESSED gives junk

Posted this question on SO but got no answers. Maybe somebody can help me here. I recently had a well-working program which streamed WAV and Ogg sounds with OpenAL. I then decided to abstract the ...
1
vote
2answers
126 views

Single or multiple inheritance for game world objects

So I am currently laying out on paper the system I want to code for a game in C++. Now currently I am debating whether to have e.g. a class object_door that inherits from another class ...
0
votes
0answers
25 views

Calling interactivity functions from object classes

Let's say I have a class object_door. An instance of said class is now in the game world in a locked state. Now to enable the player to open it, he needs to attempt to pick the lock. So I was ...
4
votes
4answers
11k views

Best way to get elapsed time in miliseconds in windows

I'm trying to do it using two FILETIMEs, casting them to ULONGLONGs, substracting the ULONGLONGs, and dividing the result by 10000. But it's pretty slow, and I want to know if there is a better way to ...
1
vote
1answer
157 views

Calculating shadowmap coordinates for cubemap in shading pass?

I'm trying to implement shadow mapping with cube maps. I believe I've done the first stage by filling the cube map, but for the final shading pass I am unsure how to exactly calculate the cubemap ...
1
vote
1answer
130 views

What is Ogre::String?

I was working with the OGRE .NET bindings (MOGRE) for quite a long time. To improve my (not that good) C++ skills, I am switching from C# to C++. After implementing a basic OGRE application, I was ...
0
votes
3answers
132 views

How necessary are shader coders? [closed]

I know that gameplay mechanics programmers, either directly working with source or with scripting are needed, however there are so many shaders written already that I would imagine you could find ...
0
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0answers
19 views

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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votes
2answers
122 views

Creating very rough 3D models

I am not a modeller, more into the programming side. However say I wanted to create an open world type of game using U4. Is there a way to create very rough models, say of buildings, cars, trees, ...
0
votes
1answer
63 views

Slight pause/delay when moving

I've been working on this little framework for my game today and realized that moving delays when moving around. I've used SFML before and have had the same problem, but never bothered to fix it. I'm ...
-1
votes
1answer
84 views

C++ SDL2 OpenGL Rendering Problems [closed]

I just started with SDL2 and OpenGL in C++ and I am having some trouble rendering a triangle. The triangle I want to draw renders on the screen, but it is black. I tried added some shaders, but they ...
5
votes
2answers
221 views

Do I really need to clear the renderer every iteration?

Just a quick question about fine-tuning/optimization. If I'm making a 2D platformer with a parallax-scrolling background (meaning no two frames are the same) do I really need to clear my renderer for ...
6
votes
0answers
149 views

Hotplugging Joysticks And Gamepads On OSX

I've tested the cross platform joystick support features on GLFW, SDL2 and SFML. SDL2 appears to be the most complete, but it can't detect when joysticks have been unplugged on OSX. To me, this is a ...
1
vote
1answer
72 views

How do I determine color resolution of an output in DXGI/D3D?

i'm was revising some code i wrote some time ago when working on the window wrapper for my rendering framework. The framework is based off DirectX, but it wasn't really using any D3D-related facility. ...
1
vote
0answers
18 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 ...
6
votes
1answer
611 views

How to benefit from cpu cache in a entity component system game engine?

I often read in the ECS game engine documentations that is a good architecture for using cpu cache wisely. But I can't figure how we can benefit from cpu cache. If components are saved in an array ...
1
vote
1answer
125 views

Creating weapons/armor procedurally

In my current project I am creating a 2d game (rpg) which should be able to dynamically create new weapons and armor based on different components. So, i.e. a sample weapon would consist of barrel1, ...
2
votes
1answer
69 views

Using normals in DirectX 10

I've got a working OBJ loader that loads vertices, indices, texture coordinates, and normals. As of right now it doesn't process texture coordinates or normals but it stores them in arrays and creates ...
2
votes
2answers
786 views

FBX Importer - Texture Name

I have a problem with the FBX SDK. I read in the data for the vertex position and the uv coordinates. It works fine, but now I want to read for each polygon to which texture it belongs, so that I can ...
2
votes
1answer
151 views

sdl: unlock mouse in fullscreen mode and make it useable on another monitor

Is it possible to unlock the mouse in fullscreen mode so that you can use it on a another monitor? I read trough the SDL documentation, but I couldn't find anything related to my problem.
0
votes
1answer
72 views

How big a transition from programmer to modeler/level designer/creator [closed]

So I think I may take a break from the programming side, I have put in 6 hard months learning C++ and graphics theory, I have learned a huge amount but over the last few days have been studying level ...
5
votes
2answers
179 views

What does the Particle engine do and how are special effects created/processed?

For example, take bullets, sparks, fireballs, light sabers, lightning bolts, any kind of special effect in a game. Are there various ways to implement these effects in a game. As far as I can see you ...