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

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1answer
97 views

How can I tell if a set of tiles form an enclosure?

I have this tile-based game I've been messing around with and I want to have a way to check if a set of wall tiles make an enclosed space. Here's some more details: I have a tile map. Each tile has ...
0
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1answer
263 views

How to render a vertex buffer in DirectX11 C++ (specifically with box2d's b2Draw)

I have all the DirectX11 devices etc setup and working with DirectXTK's SpriteBatch and currently attempting to implement a b2Draw class to draw my box2d physics worlds. I have little idea on how to ...
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1answer
123 views

Errors when loading Assimp meshes

I am experiencing some oddities when loading meshes in Assimp. Some models render perfectly, while others are complete jumbles of triangles. Some Example Images: Teapot Correct - Teapot Actual ...
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1answer
73 views

Should I check SDL_Event for NULL?

I have taken as a practice (as many others, I think) to always do this when working with pointers: void I_take_pointer(some_type* arg1) { if(arg1) { //safely do stuff with pointer ...
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1answer
89 views

Box2d C++ x velocity slowing for no apparent reason

I'm making a 2d platformer in C++, using Box2d for physics and sfml for rendering, I want the player character to move with a constant velocity in the x direction, and to jump when the spacebar is ...
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0answers
52 views

3D engine for technical application [closed]

I am looking for a 3D engine for a very technical application. I want to visualize orbits around bodies of the solar system, and thus need some way to easily display 3D Models and draw lines in 3D ...
0
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1answer
51 views

Bullet pointer becoming zero [closed]

I am currently trying to implement the Bullet physics into my game project. However, when i add some rigid bodies to the scene, i occasionally get an error in btDbvtBroadphase.cpp at the line ...
0
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1answer
317 views

Randomize and display sprites in a 4x6 grid - Cocos2d-x

I am creating a card matching game. I have a vector that stores 16 unique cards. I am trying to randomize the order and select only the first 12 cards, then setup in a 4x6 grid for a total of 24 ...
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2answers
123 views

Getting around limitations posed by float in space game

I'm working on a procedurally generated game set in outer space. As in the real world, the game universe will be pretty much 99% empty, with planets/stars/solar systems etc... being very far apart. ...
0
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1answer
181 views

OpenGL: I only see one square instead of a cube / giving information to vertex shader

I am new to OpenGL and tried to follow this tutorial. I use C# and OpenTK. So I translate the C++ Code from the Tutorial: My C#-Code: /* Hintergrundfarbe */ ...
0
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1answer
215 views

Animation, Interpolation, & Structure

I have been working on animation in my small game engine recently and I am implementing some interpolation to be used with skeletal animations. I know how to do interpolation but I am not sure where ...
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2answers
284 views

How to make sprites from multiple images using SDL2

Using SDL2 in C++ I can load textures with out problem however, I have sprites that are from about 15 different png's that I was hoping I could load them all up and for loop through them. However, ...
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1answer
424 views

How do I set a background image in OpenGL/GLFW?

I'm writing a simple 2D game with C++ and OpenGL/GLFW, and my current step is to create a menu. I finished with buttons, but I think it looks a little bit boring (with only 4 buttons and a black ...
0
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1answer
143 views

OpenGL - Asteroids clone - shooting bullets from spaceship [duplicate]

I am having a bit of difficulty figuring out how to shoot bullets from the front of the spaceship. I can draw it to screen, but I can't properly figure out how to create bullets each time I press the ...
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0answers
57 views

Getting a Rect of a SpriteBatch

I'm using DirectXTK, https://directxtk.codeplex.com/wikipage?title=SpriteBatch it's a port of XNA spritebatch. I'm trying to get a bounding rect of my sprite for testing collisions AABB. I draw ...
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1answer
169 views

OOP design, keeping track of entities

First, I would like to say that I have no experience with this and am still getting my head around OOP, so if something is really obvious, just point it out :) I am designing a game and I am not sure ...
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1answer
110 views

FBX SDK texture file name

I have built an importer that retrieves necessary vertex data however I wish to be able to read texture file directories. How do I retrieve the texture file name?
0
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1answer
459 views

How to calculate ray polygon intersection? [duplicate]

I'm in a class where we are creating a ray tracer from the ground up in C++. I'm at a point where I can't seem to wrap my head around the math that is required to calculate the point at which a ray ...
2
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1answer
111 views

How does the SDL dynamic API inject itself in statically linked code

I've been using SDL2 for development almost since it came out. Long story short, I stumbled upon the SDL dynamic api explanation. I've looked in SDL_Dynapi.c to understand how it works. I get that the ...
3
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1answer
331 views

How do I handle rope physics with fixed ends and a sliding weight?

I've been interested in rope physics recently—I've successfully implemented a simple Verlet rope with moveable ends. Now I am trying something a little different: I want to start by recreating the ...
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0answers
86 views

Particle System Tracking

I have a particle system where instead of tracking the time each particle is alive, I just track the time of the oldest particle and the time of the youngest particle. Basically, the oldest particle ...
0
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1answer
114 views

Can't seem to get Sprite to face left in sfml c++

I am having some small issues getting my sprite character to flip around. Basically I have a character that can walk to the right.. I am looking to flip it so that it looks like it is walking left. I ...
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0answers
180 views

2D Rotation Transform Matrix Issues

I'm stuck on my computer graphics class homework. I'm sorry if this is not right place to ask. I think this is closest thing to computer graphics. My assignment is to create basic 2D colored ...
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0answers
166 views

Assimp - Error loading .obj files

I'm trying to load .obj files in my little game. I decided to use assimp as tool to import those models. But it seems that assimp does not import them correctly. I looked for a simple cube mesh ...
3
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1answer
210 views

Fighting Game Camera Positioning in SDL

I'm working on a 2D fighting game (using SDL) much like the original Killer Instinct on SNES. I want the camera to keep both players an equal distance from the left and right sides of the viewport. ...
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1answer
97 views

What is the advantage of 6 Directional Movement vs, for instance, 8 or 4 [closed]

I'm making a fallout 2 inspired game and I'm wondering what you guys think about its use of 6 directional movement. It kind of bugs me for some reason and seems like it would make game play odd and ...
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5answers
340 views

Is it bad practise to have an object for every tile?

In the game I am working on, many of my tiles must have special attributes (such as triggers when the player steps on them). I was wondering if it would be bad practise to create an object for every ...
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1answer
39 views

How can I send matrix data to shaders without the Effects11 framework?

I'm making a Direct3D engine but I'm stuck with this one little problem. I want to not use effect files but instead use shader files. What can I use to send matrix variables to shaders if I don't use ...
0
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0answers
50 views

C++ Visual Studio Sprite Animation Function only setting values for certain Rect structs in SDL

I'm making a game in SDL and I am using an Array of Rects to store values of sprite sheet clip's dimensions. When I call the function and pass in one of my sprite sheet textures with it's ...
2
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1answer
226 views

How do I call OpenGL methods that require pointers in C#?

I have found the following C++ code in this tutorial to draw a triangle with OpenGL 4: float points[] = { 0.0f, 0.5f, 0.0f, 0.5f, -0.5f, 0.0f, -0.5f, -0.5f, 0.0f }; GLuint vbo = 0; ...
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0answers
28 views

Intersection issue with box2d in iOS

I'm trying to use the code here http://www.iforce2d.net/b2dtut/raycasting So I can know whether a line cross a box2d object or not. It half works, in that when the line crosses the object it does ...
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1answer
333 views

OpenGL / Soil Image Loading Difficulties [closed]

The Problem I am attempting to load and display an image in OpenGL using the SOIL library. I originally started with lodePNG but I had difficulties getting the image to display so I assumed it was ...
0
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1answer
253 views

Cocos2d-x how to draw in specific free form area

Here https://github.com/mikeccy/cocos2dx-finger-paint/blob/master/Classes/HelloWorldScene.h and https://github.com/mikeccy/cocos2dx-finger-paint/blob/master/Classes/HelloWorldScene.cpp you can see how ...
1
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0answers
30 views

How to custom file formats work, encryption, packing etc [duplicate]

So say I take an example from Telltale games, they pack all their file assets into ttarch files, now I guess this is a custom file format that allows many file assets such as dds, jpg, bik, wav, 3ds ...
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2answers
127 views

Strange quaternion rotation

I was implementing some quaternion rotations in too my infant 3d game engine and the rotations were really strange? Excuses my cluelessness. Anyways this is what I have: static XMVECTOR ...
0
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2answers
160 views

How to detect collision between two directed object?

I'm currently writing a game which is like Battle City game. But right now I'm facing a trouble involved to checking collision between two objects. This is the code that I wrote: ...
-2
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1answer
244 views

GLSL- How to change a certain color of a sprite, to another color passed into the shader?

There are sprites, with certain pixels being bright pink, and a shader dyes these pink or grayscale pixels to a custom color determined by the player. For example, a character looks normal except for ...
0
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2answers
147 views

Quaternion Rotation Help

So I'm making a little engine with DirectX 11 and C++. (Some other help from other API's as well) DirectX has this function XMMatrixRotationQuaternion(XMVECTOR quaternion). I know nothing about this ...
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2answers
297 views

How can rotate a 2D textured quad in legacy OpenGL immediate mode?

I have a texture of a tank, and I want to it appearance on the screen depends on its current direction, so I decided to use rotating texture functions of OpenGL. I followed some advices through Google ...
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2answers
152 views

What does a C++ expert need to know? [closed]

so the other day I was looking for jobs in the gaming industry (software engineer/game programmer/gameplay programmer, etc) just to get a look at what are some of the requirements. Most of these jobs ...
10
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3answers
594 views

Cache misses and usability in Entity Systems

Lately I have been researching and implementing an Entity System for my framework. I think I read most articles, reddits and questions about it that I could find, and so far I think I am grasping the ...
0
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1answer
118 views

Constant buffer not updating

I'm trying to rotate models independently of each other however I cannot for the life of my figure out how. I have gotten to the stage of writing this: std::vector<int>::size_type st = ...
5
votes
0answers
139 views

Ogre PSSM Grass Receiving Shadows

So I made the switch to Ogre3D (v1.7) and using PagedGeometry. What I'm trying to do is make a simple scene with a terrain, some trees and grasses. In a nutshell, I would like to achieve this kind of ...
0
votes
1answer
114 views

OpenGL segfault in DrawElements

I've asked this question on regular StackOverflow but without much success yet. The below program produces a segfault on the call to glDrawElements. I've looked at my max and min index values and they ...
1
vote
2answers
2k views

Directx fbx loader

I am trying to build a game with animation in c++ with DirectX. I have some fbx files with animation that I want to integrate in my game. But I do not want to draw the fbx files as a FbxScene or ...
0
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1answer
56 views

Diffuse Maps and DirectX

How would I load two diffuse maps onto one mesh. I have a mesh with multiple sub meshes but each one of those sub meshes has a vertex buffer and I don't think that's very efficient. How could I have ...
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1answer
133 views

How to handle game objects in DirectX

Coming from XNA, I would use the content pipeline and create XML files for game objects. However, if I changed something in the XML, I would need to do a rebuild of the project so it will create the ...
0
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1answer
53 views

How to move a body from one world to another?

I have a Box2D world for each level in my game. When a level is completed, I want the player to be removed from the completed level's world and added to the next level's world. How do I do this?
0
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2answers
211 views

Handling player and AI in a component based structure dynamically?

I'm trying to find a way to allow both input and AI to call actions of an actor in a component based structure for a 2d turn based game. The actions make use of the components. To keep the system ...
0
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4answers
274 views

Why use compression such as zlib? [closed]

Compression and encryption are different things AFAIK, so why even use compression if you have to still decompress anyway, is this just to reduce distribution size or is there some other reason?