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

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How can I animate a sprite in cocos2d-x 2.2.1 c++? [duplicate]

Is there a way to do an animation without a .plist file? I'm having a hard time doing swap animation with sprites. For example, doing an animation while the user is not doing touches and the other ...
9
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3answers
13k views

How to play animations in Cocos2d-x?

I'm new to Cocos2d-x and looking for a good way/tutorial on how to play animations in Cocos2d-x.
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5answers
2k views

Entity System creating Components

Over every entity system I see implemented in C++, or even in Java/C# (e.g. the Artemis framework). I see components not allocated via a new operator (or something similar, e.g. std::make_shared). For ...
2
votes
1answer
74 views

Informing objects within a particular state of the world state

Following the State pattern, every state in my game is a derived object that reflects a particular segment of the game (MenuState, PlayingState, GameOverState, etc.) Each of those state objects holds ...
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2answers
344 views

Is it possible to use C++ with Unity instead of C#?

The title kind of says it all. Is it possible to replace C# with C++ on a game using Unity?
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1answer
65 views

Compute billboard rotation

I'm trying to compute a matrix to have object always facing the camera. For the moment, my result look pretty good, the problem is that my original billboard scale isn't preserved (Every billboard ...
2
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1answer
189 views

Anti-Aliasing in OpenGL [C++]

I'm trying to make anti-aliasing work inside of OpenGL, here's what I've tried: glEnable(GL_POINT_SMOOTH); glHint(GL_POINT_SMOOTH_HINT, GL_NICEST); glEnable(GL_LINE_SMOOTH); ...
1
vote
1answer
128 views

C++: Checking if an object faces a point (within a certain range)

I have been working on a shooter game in C++, and am trying to add a feature whereby missiles shot must be within 90 degrees (PI/2 radians) of the direction the ship is facing. The missiles will be ...
0
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1answer
68 views

Proper way to encapsulate a Shader into different modules

I am planning to build a Shader system which can be accessed through different components/modules in C++. Each component has its own functionality like transform-relevated stuff (handle the MVP ...
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0answers
66 views

C++ OpenGL trouble trapping cursor in window

I am using OpenGL and I try to trap my cursor inside my game window (using both SetCursorPos and ClipCursor) But, these conflict with my camera rotation code as my camera is rotated with ...
-3
votes
1answer
289 views

Rotate camera with mouse? [closed]

Once again, using tutorial 10 at NeHe. I want the code if (keys[VK_RIGHT]) // Is The Right Arrow Being Pressed? { yrot -= 1.5f; // Rotate The ...
1
vote
2answers
338 views

UV Atlas Generation and Seam Removal

I'm generating light maps for scene mesh objects using DirectX's UV Atlas Tool( D3DXUVAtlasCreate() ). I've succeeded in generating an atlas, however, when I try to render the mesh object using the ...
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3answers
263 views

How do I correctly multiply an XMMATRIX by a scalar?

Using DirectXMath and its XMMATRIX structure in C++ and Direct X 11, how does one multiply that matrix structure by a single float scalar? I want to implement the operation B = A * f; where A and B ...
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2answers
146 views

How to set HUD elements position and size depending of resolution [duplicate]

How can I set HUD elements' position and size when changing resolution and maintain the desired layout? All HUD elements (including menu items such as play button, setting button etc) need to get some ...
7
votes
2answers
233 views

How do I find the closest points(thereby forming a polygon) enclosing a particular point?(see image)

I am working with a game engine, and my task is to add code for simulating fracture of rigid meshes. Right now I'm only working on breaking a cube. I am using Voronoi's algorithm to make a ...
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1answer
47 views

speed up the update of glutidle()

I have a client that sends data at 1KHz (i.e. 0.001 sec) to a master over Internet using UDP protocol. In Master, I need to draw an object, but the problem is that the update of GLUT is slower than ...
3
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1answer
325 views

Dynamic Quad/Oct Trees

I've recently discovered the power of Quadtrees and Octrees and their role in culling/LOD applications, however I've been pondering on the implementations for a Dynamic Quad/Oct Tree. Such tree would ...
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vote
2answers
232 views

How to detect graphics API at runtime with SDL2?

Using SDL2, is there a way to determine at runtime whether the application is using OpenGL, OpenGLES, or DirectX? EDIT: If there is a way to figure it out without using the SDL2 API, I'm willing to ...
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0answers
453 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 ...
-1
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1answer
80 views

Smooth radial collision

I'm trying to make collisions smoother in my game. Currently, entities will stop completely when they collide with an obstacle. I saw the following article recently: ...
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2answers
90 views

OOP Question for Team System

I'm not quite sure right how I should create my "Team System". Lets say I have 2 teams with 4 players in there. The teams are Team Blue and Team Red. A team knows the amount of its members, the amount ...
11
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1answer
471 views

How are entity systems cache-efficient?

Lately I've been doing a lot of reading on entity systems to implement in my game engine (C++/OpenGL). The two key benefits that I constantly hear lauded about entity systems are 1) the easy ...
3
votes
0answers
45 views

How to raycast against a physx cloth mesh?

I'm using the PhysX 3.3 SDK in a application and mostly everything is working fine. However, I'm trying to develop a feature that would allow users to click on various actors in the scene and modify ...
0
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0answers
46 views

How do I update a static mesh in Unreal 4 during movement?

I would like to use UE4 for rendering of a huge world. During the runtime, I would like to load a mesh from a custom source and adopt the mesh in the game. Could someone give me a hint how to do this ...
1
vote
1answer
145 views

Game development for high-school with C++ and OpenGL [closed]

I've been teaching high-school students (12th grade) game programming in the last 2 years. The way I did this till now, was first to give them "half made" classes (for Point, Polygon, etc.) and ...
2
votes
1answer
244 views

Emscripten code and three.js

I would like, if it's possible, to use Emscripten code generated from C/C++ with the Javascript library three.js. For example, from emscripten code I want to pass rendering information to the three.js ...
0
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2answers
94 views

Why can't I load an image with a relative path in SDL2 on Linux?

When loading a texture in SDL2 the general procedure is this: SDL_Texture* texture = IMG_LoadTexture(renderer, "resources/images/image.png); However this doesn't work and I have to supply the WHOLE ...
0
votes
1answer
108 views

C++ OpenGL / SDL2 VBO — Depth problem / Transparency

I got a problem with my VBO. When having textures. The far blocks overlay the near ones. I tried editing the alpha, depth buffer, the VBO byte allocation. Nothing works for me... The FAR plane is ...
1
vote
2answers
138 views

GLSL to Cg: why is the effect different?

With reference to this question, where I was trying to make the shader compile, I am now trying to make an effect appear. The effect can be shown here, through a GLSL shader: But when I use the ...
1
vote
2answers
165 views

What torque should I apply in Bullet to maintain a vertical orientation?

I have a RigidBody in Bullet. Each frame, I want to apply torque to correct its orientation toward an upright position (i.e. near-zero pitch and roll). I know its angular velocity and orientation. ...
0
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0answers
34 views

How to run C++ functions from other files [duplicate]

I want to set up my game engine I'm making to essentially load C++ code from another file, and to load initialization variables from those files also. I was thinking a system that has files that store ...
0
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0answers
48 views

How does character creation work in 2D games? [duplicate]

My question is how does character creation work in (multiplayer) 2D game? For example player wants to have long yellow hair, black armor and white leggings. What should I do? Already have all ...
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1answer
75 views

Geometry Shader only creates one primitive

I am currently trying to use the geometry shader. My input is a set of points, for which multiple triangle should be created This is the geometry shader #version 330 layout(points) in; ...
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2answers
215 views

UDP Netcode Architecture for Fighting Game

I am programming a fighting game that uses a UDP client/server architecture for multiplayer. The server can handle multiple clients, two of which (or one being the server) are playing and the rest are ...
1
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0answers
141 views

implementing shadows into my 2D GLSL-based lighting system

I'm writing a lighting system in OPENGL using GLSL shaders, and I'm pretty happy with the light casting I have so far, but I'm totally stuck on casting shadows. Everything I've found online on this ...
1
vote
2answers
212 views

Load texture from different thread

I am trying to load textures from a different thread but it fails everytime on this following method: D3DX10CreateShaderResourceViewFromFile Turning off my multithreaded routines make the textures ...
1
vote
1answer
79 views

Henry Hatsworth kind of blocks minigame, std::vector sorting or alternative?

I'm not sure if this is the right place to post this, or if I'm doing it right. But I believe I've kept to the rules. If not, please let me know and I'll remove my post or edit it accordingly. I'm ...
2
votes
1answer
447 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 ...
0
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0answers
242 views

Procedural Tilemap generation

So i'm building a 2d game but i have never really done any procedural generation i followed the SFML tutorial for tilemaps and i have the maps loading what i know want to know is how can i convert the ...
0
votes
1answer
163 views

3D picking for mouse move event

I implemented color picking recently and I would like to use it as kind of highlight when mouse is over an object but I am concerned about performance. Color picking requires whole frame to be drawn, ...
0
votes
1answer
108 views

How to prevent a circular dependency between an entity and its state? [closed]

I've read this question, and I think it has some good answers and discussion, but it appears to focus primarily on rendering. I have a different problem in the management of a game entity's state. ...
0
votes
1answer
127 views

Looking for a full featured C/C++ UV Mesh Unwrapper [closed]

My first question! Is there an open source C++/C piece of code easy to integrate to solve the UV Unwrapping of arbitrary meshes out there ? I would like to use it to build a light mapper or similar ...
0
votes
2answers
96 views

Switching a project written in Lua to a compiled language [closed]

I am experimenting with game development in Lua using the Love2D framework, and while it works fine, I am getting tired of using a dynamic scripting language. I would like to have better performance, ...
2
votes
0answers
99 views

DX 11 Specular Highlights in Deferred Renderer

I am currently implementing a deferred renderer in DX11.1. Right now I am having a problem that I can't seem to crack with specular highlights when I have multiple light sources. I keep a vector of ...
4
votes
2answers
375 views

Can I use an AI engine written in C++ in my Unity game? If yes, how can I do this?

I am studying some chess and others AI algorithms and the majority of these implementations are made in C and C++, my question is, if I make a chess board and all the graphic thing in Unity, can I ...
0
votes
3answers
104 views

Nearest neighbor search in 2D to find circles that interacts with point

I need to store big number of object that every object have range, then I need to find objects that the point are in their range. So basically I need to store circles and then check who interacts with ...
2
votes
1answer
239 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. ...
2
votes
1answer
129 views

Rearranging array for memory efficiency

This is a question about a passage from this article: I suggest having every game object exist within a single giant array. This keeps game objects together in memory, and even though deletion ...
2
votes
3answers
312 views

“CVar system” - are CVar always looked up or cached?

Many famous game such as Quake or Half-Life use CVars to allow easy and flexible game parameter manipulations. You can simply open up the console and write something like sv_cheats 1 to enable ...
0
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0answers
406 views

CocoStudio + cocos2dx 3.2 correct way to import animation?

After many frustrating hours I came to the conclusion that there is no valid way to implement a cocostudio animation, as CCArmature is deprecated and didnt work for me anyway. CocoStudio.h and ...