The C programming language.
0
votes
1answer
36 views
Scaling an SDL Surface
I want to create a button for a game's UI. The background uses a gradient and then I blit a surface on top of the gradient and use SDL_SetColorKey to delete the unwanted pixels. The surfaces are not ...
0
votes
2answers
105 views
which quarter of a triangle the point is in
I've got a world made out of squares. The square are devided in four triangles like this:
The corners have their heights stored in a 2D array and the center height is the average of the corners. To ...
0
votes
1answer
25 views
SDL Surface clipping mask
I am creating a GUI for my game, so I use some buttons like . So you can see it is only text surrounded by a rectangle. But I currently use a huge png image with all the buttons I need arranged as I ...
0
votes
0answers
55 views
Sometimes my game runs fine, other times it's shaky, why?
I'm trying to learn how to make games. I just did this very simple 3D game where you control a cube that shoots at incoming cubes. Sometimes I start the game and it runs smoothly from start to end. ...
0
votes
1answer
32 views
Accelerated Motion
I'm making a menu for my game with SDL, when you click on an option a sub menu slides down and is shown, just sliding down is really boring, so I want it to accelerate(like if gravity was pulling it) ...
5
votes
3answers
1k views
Is it a good plan to use 2D physics for a 3D racing game? [closed]
I am working on a 3D racing game using SDL and OpenGL. I thought it would be easier to use a 2D physics engine, since I really don't need the 3rd dimension. There will be no flying cars or jumps, they ...
3
votes
1answer
118 views
How to get scripted programs governing game entities run in parallel with a game loop?
I recently discovered Crobot which is (briefly) a game where each player codes a virtual robot in a pseudo-C language. Each robot is then put in an arena where it fights against other robots.
A ...
-2
votes
2answers
110 views
Which library to choose between SDL and GTK for C game Development (Begginer) [closed]
Note: I know that this is a opinion based question
I've been programming in C it's been some time, now I want to get into game development but I'm not sure which GUI library should I use between SDL ...
3
votes
1answer
107 views
Collision detection in Pong clone
Well I'm trying to create a pong clone using SDL and I had some problems with the frames and some times the ball would go through the paddles despite the fact that at other times the collision worked ...
0
votes
2answers
177 views
Is networking programming quite generic
I have only looked into the basics, at least I assume it gets more complex. So does network code really change from one game to the next or is it pretty much portable. For example I can create say a 2 ...
0
votes
1answer
174 views
Render two images to an SDL_window
I want to create a menu for an SDL game, so I load an Image to an SDL_Window as the background, then I try to load the next image which will be a button but it doesn't display the button to the ...
1
vote
1answer
84 views
Background color gradient with SDL
I want to create a menu for a game using a color gradient as the background. Is there a way to create a gradient background instead of using an image for it (since I don't know what size the window ...
0
votes
1answer
37 views
Problem with .hdr/.pic format
So, everything was clear from the specification point of view, but when I moved to reading through some of the original implementations and reimplementations, I ran into this:
f = ...
-6
votes
2answers
89 views
Is padding brackets objectively the best way to write C programs? [closed]
void Function( int, char )
versus:
void Function (int,char)
My friend keeps saying otherwise. What is objectively the best way to write brackets?
1
vote
2answers
100 views
Using Lua for configuration and localization data
Since my game is already going to be scripted with Lua, I've decided to make all my configuration and localization data defined using Lua tables. For example, this could be a basic locale file:
-- ...
1
vote
1answer
106 views
How to draw or translate into world space?
I've been hacking around with OpenGL, but there's a few concepts which I can not find the answer on.
I want to draw three GL_QUADS next to eachoter like so:
1[2][3]
I know GL_QUADS are deprecated, ...
4
votes
1answer
86 views
Dealing with interpolation and object creation/destruction
I've implemented a game loop similar to that in Glenn Fiedler's Fix Your Timestep! article. I have an update step running at 50Hz and a render step running at 60Hz (monitor refresh rate). To keep ...
1
vote
1answer
129 views
How to adjust a font to fit inside a speech bubble?
I'm creating a game that contains a speech bubble for dialog. The idea of this function is to allow one call to set new text in a speech bubble. The speech bubble will adjust in size of the new font ...
1
vote
1answer
106 views
Update and Render logic with interpolation
I am working with C and SDL2 and just wanted some insight as to how to properly apply interpolation to the rendering.
EDIT - some clarification, update() input() and render() are just hypothetical ...
0
votes
0answers
148 views
bones programmatically in assimp
I am trying to animate a 3d hand object programmatically in Assimp, I have the 3d model being export to collada using Blender. But I have no idea how to go from one bone animate it and then go to the ...
1
vote
0answers
46 views
Sampler object not changing texture filter
I am currently binding a sampler object to a texture (GL_TEXTURE12 to be specific) with
glBindSampler(12, sampler);
and the initial settings are very visible compared to the textures own settings. ...
0
votes
1answer
120 views
Linking error at tessellation shaders in GLSL
I'm testing the triangle tessellation from the link http://prideout.net/blog/?p=48#shaders . All the shader are compiled correctly, but when I try to link the program using the command:
...
1
vote
1answer
102 views
When creating the horizontal blur, how is the vertex shader being called for each pixel?
I am following this tutorial. I am confused as to why the VertexShader is being called each time for the PixelShader. I was under the assumption the VertexShader is called only 6 times during the ...
0
votes
1answer
203 views
Set Sampler states: Linear, Bilinear, Trilinear Filtering/Interpolation
How do you set each of these sampler states in the hlsl
Linear filtering
Bilinear filtering
Trilinear filtering
0
votes
0answers
52 views
Error loading PCX image in FreeImage library
I'm using FreeImage in C++ for loading texuture from the PCX image.
My FreeImage code is as following:
FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
//pointer to the image data
BYTE* bits(0);
fif = ...
3
votes
2answers
249 views
Using quaternions, how do I determine if an object is upside down from an original rotation?
Imagine this scenario: An object is laying flat on a horizontal surface, from this an original rotation is determined. Then the object is moved, and at some point flipped upside down and put back down ...
2
votes
2answers
332 views
Is it possible to use DirectX in pure C program?
I want to try something simple with Direct Sound. Just want to know if it's possible.
Or maybe I need some other API?
3
votes
3answers
138 views
Should I use select() for networking in my gameloop?
I'm writing a simple networked game in C/C++. To keep things simple I'm using TCP.
In my server's game loop I'm using a POSIX select() with a zero second timeout for two things:
Discover incoming ...
0
votes
1answer
86 views
Luminance increase in SDL
We have managed to create grayscale picture using the following snippet of codes in SDL. What we need to do now is how to first convert into YUV or YCrCb for it be able to set the luminance value and ...
0
votes
1answer
366 views
SDL gray scale image from a a color image?
I am new to sdl. I have basically have the following codes which can load the images. I know how to access the pixel as below. What I need it to convert the image to 8 bit grey level and 1 bit ...
0
votes
1answer
515 views
Can you use python, c and c++ in udk without plugins?
Im pretty new to game engines and i was wondering if I could use python, c and c++ in udk. I've tried getting the answer all over the internet but the answers i do find aren't very clear. So am i ...
0
votes
1answer
189 views
Creating a fragment shader to darken a white texture over time - OpenGL GLSL
So as a part of learning OpenGL, I've now decided to try and be a bit more creative with shaders, as part of a practice game I'm making using C/OpenGL.
I'm completely new when it comes to working ...
1
vote
0answers
173 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 ...
1
vote
1answer
404 views
Understanding the z-axis vector from OpenGL modelview matrix
I would like to shoot spheres in the current view direction in a simple scene. I use an FPS camera, so no z-rotation. The vector pointing in the correct direction should be (m[8], m[9], m[10]) where m ...
0
votes
1answer
258 views
Node.js/V8 as a Platform for High End Local PC Game Development?
As a Web/UI dev rapidly expanding into more wide-open generalist territory, the more I learn about how its done in other languages, the more I love JS for architectural and basic ...
1
vote
1answer
425 views
does glBindAttribLocation silently ignore names not found in a shader?
Does glBindAttribLocation silently ignore names that are not found? For example, in a shader:
// Some vertex shader
in vec3 position;
in vec3 normal;
// ...
And in some set up code:
// While ...
1
vote
1answer
196 views
Score system for “little bit more complex” snake game
I have created snake game.
I can't think of good score system so that is is fair.
There is only one highscore list for all modes.
Player can choose any size of board
- Let's call that param "Board ...
0
votes
1answer
97 views
How can I capture key events on the Mac when using OpenGL?
I have code that renders a triangle using OpenGL. I would like to control it using the arrow keys on the keyboard.
Anyone know how I would do this on OS X? I think I can create an Objective-C file ...
0
votes
1answer
175 views
Would it be inefficient to call LWJGL from C++?
I like LWJGL, but Java? Not so much. I recently found out a way to call Java methods from C++. But would this be inefficient? I mean, calling a C/C++ DLL from Java, just to be called back again into ...
10
votes
3answers
2k views
Is GNU GCC used for AAA games?
GNU GCC is a very common compiler, but it seems like almost no one uses it for bigger projects like AAA games. To me, it's works just fine, never had a problem with it. But I wonder why all AAA games ...
0
votes
1answer
58 views
SDL text or additional images not loading
I've got a basic side scroller that allows the user to run and jump around. I've used various tutorials to get this far, but I can't seem to get any text to render, no matter what method. I also can't ...
1
vote
2answers
457 views
Exclusive mouse movement with WM_INPUT
Microsoft seems to recommend using WM_INPUT for input. I want to only get relative mouse input and hide the mouse cursor all together for a short while (For gesture based input). However, using ...
1
vote
1answer
91 views
Physics Simulation - Pushing an object with user control
I'm working on a 2D game engine using C, SDL and OpenGL. Have worked out basic graphics, physics, and broad phase collision detection. I am trying to realistically simulate "pushing" objects around. I ...
0
votes
2answers
219 views
joystick movement for Geometry Wars clone
I am kinda new in game programming, but I've got a semestral work to make a game, so I decided to do a clone of Geometry Wars. Despite that the game is really simple (in principle), I have ran into a ...
2
votes
2answers
250 views
How can I switch between scenarios in a text game?
I am making a text-based adventure game. How should I go about changing to another scene if the player wants to e.g. go to the house or walk down the road?
I am using Objective C, but C will work ...
2
votes
3answers
726 views
Oriented Bounding Box - How to?
I've been trying to write my own collision code, less because I want to, more because I want to understand its working.
To do this, i've been working off of the popular collision book i'm sure you've ...
-2
votes
2answers
184 views
Transfering a game from Python to C [closed]
I have a simple game RiceRocks which I want to translate into C programming language not C++,because I know C better. I know only basic C++ such as : loops,control statements, arrays.
Where to start? ...
0
votes
1answer
413 views
Why does the lighting change the objects color?
I have a code that draws a sphere. Without lighting it is white, but if I enable lighting, it's drawn in gray.
I don't know why the sphere changed it's color
#include <GL/gl.h>
#include ...
3
votes
2answers
301 views
How does this background scrolling code work?
I'm glad that this code does exactly what I wanted it to do...But I can't make sense of it although I wrote it from scratch myself. What I wanted to do was create an infinitely scrolling background.
...
5
votes
4answers
1k views
Is there a sound library for C to generate sound samples from code? [closed]
I'm working on an engine for a retro-style game in C. I'm looking for a sound library that would produce chip sounds from code...I want to make my own simple chiptune tracker for the engine to create ...
