Tagged Questions

3
votes
1answer
72 views

Does SDL running on Mac OS not recognize Xbox controllers?

I'm trying to learn a bit of SDL, and have been bouncing between Windows and Mac platforms, but am noticing that an SDL program running on my Macbook doesn't recognize the presence of the Xbox ...
-1
votes
1answer
113 views

OpenGL/SDL2 window stopped rendering [closed]

I have been working on a game engine for a couple of days now and I've had it rendering a colourful cube and playing sounds in OGG format, but, after refactoring my code-base to make things easier; it ...
-1
votes
1answer
89 views

SDL Access Violation

I've created a SDL game project and this window popped up while trying to compile: First-chance exception at 0x00000000 in SDL_Game.exe: 0xC0000005: Access violation executing location 0x00000000. ...
-4
votes
1answer
91 views

C++ SDL/SFML advancing help [closed]

I've been playing around programming using SDL and SFML for a while now and done all the basic tutorials I can find(love lazyfoo). but I'm stuck and not sure how to move on from simple games like ...
2
votes
0answers
61 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.
1
vote
2answers
188 views

My SDL Game executable cannot run outside codeblocks

After compiling and running SDL programs successfully inside CodeBlocks, when I run them outside CodeBlocks (by clicking .exe file) my program does not run. Instead, it says that libstdc++6.dll is ...
-2
votes
1answer
131 views

SDL_BlitSurface does not works

I have an issue with the SDL_BlitSurface... When I blit (SDL_BlitSurface) in a transparent (background) surface, it does not blits, actually I tried all the existants functions ...
3
votes
1answer
303 views

Is basic SDL hardware accelerated?

I'm going over some SDL tutorials aimed at creating 2D games. However, when I create a basic SDL program - is it hardware accelerated? Or is hardware acceleration only relevant when it comes to 3D ...
0
votes
1answer
156 views

SDL.NET vs SDL C++

I am currently transitioning from XNA to SDL, and was wondering if SDL.NET provides the same benefits as SDL C++. Considering that SDL.NET uses the .NET framework as a wrapper to the SDL base ...
1
vote
1answer
242 views

SDL2 focus lost = massive gain in FPS

Whenever I lose focus from my game window, I go from ~60FPS to 6000+, then when the window gains focus again, I go back to around 60 frames per second. And yes, this happens every time I run my game, ...
-4
votes
1answer
222 views

Game in c++ using opengl and sdl [closed]

My problem is next: For my school project for the last year of study i have decided to make a game. My game is played in labyrinth, game for four players. I decided i am going to make it using sdl ...
-2
votes
2answers
485 views

making a game in 2D(C++). SDL or openGL? Or, why not both? [closed]

I'm trying to make a platform game in 2D and I want to know what tool should I use to make it happen. I understand that I can use SDL with openGL. However, if I want to make a solid 2D platform game, ...
1
vote
1answer
129 views

Implementing a Menu System and Buttons (Waiting in a whle loop)

I have a menu system with four screens and six buttons. I have created a button class and it works great. I even have events for the buttons working. The problem is that I have to run the events ...
0
votes
1answer
322 views

Does SFML render it's graphics using OpenGL internally?

By that, I mean that SFML has an abstraction for OpenGL? Sort of like SDL's blit functions, but using OpenGL internally? "Yes SFML uses OpenGL for all the graphical stuff. " Received this comment ...
1
vote
3answers
1k views

How to draw 2D images using OpenGL, in SDL?

After everything, I managed to find a simple piece of code that shows how to draw a 2D image with openGL: #include "SDL/SDL.h" #include "SDL/SDL_opengl.h" #include "SDL/SDL_image.h" ...
2
votes
3answers
385 views

How should I store levels in a C++ game?

I am writing in C++. I am storing game levels as a 2-dimensional int array. This may be a hacky way of doing things, but I am not ready to change it unless I have to. I store values in the array and ...
0
votes
1answer
67 views

Help Applying SDL_Surface on an array of SDL_Surface?

I'm trying to make a 4x4 blocks (50x50 px) with SDL Surface. Added another block (50x50 px, I wrote the variable as 'flag') that can only move within the 4x4 blocks, so I can select one of the blocks ...
0
votes
1answer
147 views

Logic For camera Movement

Every time I move the hero on my screen I increment a screenOffsetX and a screenOffsetY. These add 1 if you move right, -1 if left to the sceenOffsetX. Add the screenOffestY +=1 if down, -=1 if up. I ...
2
votes
3answers
341 views

How can I measure the execution time of some code?

How can I capture how long something takes to complete and log it to the output window (in Visual Studio)? Is there a special library for this? clock_t start, end; double cpuTime; start = clock(); ...
0
votes
2answers
191 views

Map is rendering too slow

I have a basic 20x20 array that stores the map for my game. It either has a 1 or 0 to say a path and a non path. When I draw it on the screen, It seems to take to long to draw one at a time and looks ...
3
votes
2answers
185 views

Not So Beginner Tutorial Request

So my game is done for now but every time it flashes on the screen and my game loop is awful. So crowded with logic. I need to learn more about games and how they are running. My idea now is that at ...
0
votes
2answers
434 views

Is there an alternative to SDL 1.3 for a C++ game that should run on iOS and Android?

I've used SDL for many desktop games, always as the cross-platform glue for: Creating a window Processing input Rendering images Rendering fonts Playing sounds/music It has never disappointed me ...
4
votes
1answer
86 views

Key events outside of an SDL application

I'm developing an app under C++ and SDL running in Ubuntu. I'm using the SDL events to handle the keypad buttons. My problem is that my app launch other programs and it should close they with a key ...
-1
votes
3answers
97 views

SDL_BlitSurface segmentation fault (surfaces aren't null) [closed]

My app is crashing on SDL_BlitSurface() and i can't figure out why. I think it has something to do with my static object. If you read the code you'll why I think so. This happens when the limits of ...
1
vote
0answers
247 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 ...
1
vote
3answers
168 views

SDL_image & OpenGL Problem

i've been following tutorials online to load textures using SDL and display them on a opengl quad. but ive been getting weird results that no one else on the internet seems to be getting... so when i ...
2
votes
3answers
171 views

SDL_DisplayFormat works, but not SDL_DisplayFormatAlpha

The following code is intended to display a green square on a black background. It executes, but the green square does not show up. However, if I change SDL_DisplayFormatAlpha to SDL_DisplayFormat ...
2
votes
2answers
483 views

How to hide assets from user? ( e.g.: a png file )

I think the title is quite self-explaining, still this is a big area I think, so let me drop a few words: I've got a simple experiment game project going, and I want to make sure, that the user isn't ...
1
vote
1answer
221 views

SDL: How would I add tile layers with my area class as a singleton?

I´m trying to wrap my head around how to get this done, if at all possible. So basically I have a Area class, Map class and Tile class. My Area class is a singleton, and this is causing some ...
10
votes
2answers
585 views

What should I worry about when changing OpenGL origin to upper left of screen?

For self education, I'm writing a 2D platformer engine in C++ using SDL / OpenGL. I initially began with pure SDL using the tutorials on sdltutorials.com and lazyfoo.net, but I'm now using SDL to ...
5
votes
2answers
632 views

Custom extensible file format for 2d tiled maps

I have implemented much of my game logic right now, but still create my maps with nasty for-loops on-the-fly to be able to work with something. Now I wanted to move on and to do some research on how ...
1
vote
4answers
696 views

SDL - Getting a single keypress event instead of a keystate?

Right now I'm working on a simple SDL project, but I've hit an issue when trying to get a single keypress event to skip past a splash screen. Right now, there are 4 start-up splash screens that I ...
4
votes
1answer
311 views

How to use caching to increase render performance?

First of all I am going to cover the basic design of my 2d tile-based engine written with SDL in C++, then I will point out what I am up to and where I need some hints. Concept of my engine My ...
2
votes
1answer
239 views

How do I play music at half speed?

I'd like to slowdown music playback, say at half speed. I'm currently using SDLmixer. I assume I'd need to tell SDL that I have a 44KHz music and want to stream it at 22KHz, but when I pass in 22Khz ...
5
votes
3answers
921 views

What features do basic particle engines have?

I created a basic particle system for SDL in C++. It has some basic stuff like an emitter, as well as a simple particle class. It can load a image, or create a dot of a color. And that's it. What ...
0
votes
0answers
183 views

SDL audio streaming callback function never triggered

I'm attempting to stream audio for my C++ game which uses SDL through the mingw32 environment. From my understanding it's a fairly simple affair: extern "C" void audioStep(void* unused, Uint8* ...
5
votes
3answers
291 views

Current library situation

Allright so I've been doing some searches, here what I got: SDL: It is a standard, very mature but very old. (I got posts of late 2009 where they were still waiting for the 1.3 to come up...we are ...
1
vote
1answer
344 views

SDL Parallax Scrolling along two axis

I'm trying to implement Parallax scrolling in two dimensions using SDL, but I've run into an issue using SDL_BlitSurface() to blit my layer images to the screen buffer. The images I'm using for this ...
2
votes
4answers
611 views

Should the main game object be static in c++

I am creating a 2d platformer using SDL and I was thinking that my game object could be static, but I wasn't sure if this was a good idea. The pros (that I can see): Accessing settings options ...
0
votes
1answer
213 views

C++ and SDL Trouble Creating a STL Vector of a Game Object

I am trying to create a Space Invaders clone using C++ and SDL. The problem I am having is in trying to create Waves of Enemies. I am trying to model this by making my Waves a vector of 8 Enemy ...
4
votes
5answers
456 views

Trying to make a game with C++, using lists to store bullets and enemies, but they are not erased

I've been trying to make a pretty simple space shooter game with C++, and I have been having a lot of trouble trying to use lists to store enemies and bullets. Basically I followed the post here ...
-3
votes
2answers
435 views

Starting Game Programming in C++, where to begin for optimal cross-platform development? [closed]

I wish to begin learning game development in C++. I have knowledge in syntax and the console using Visual C++ 2010, however I want to begin programming. My only problem is that I want to be able to ...
2
votes
4answers
1k views

Most effective way to manage a gamestate system that is easy to use?

I just started working on my game, mostly the game management. I plan and using game-states to make the menu's and other stuff easier. My main idea for implementing the game-states is creating a game ...
1
vote
1answer
461 views

Is SDL too low level for a beginner?

I am getting started in game development. I started by learning SDL because it seems before I start developing big games, I have to start with the most basic stuff, like Tetris or Snake. I was ...
7
votes
1answer
1k views

Turn-based JRPG battle system architecture resources

The past months I've been busy programming a 2D JRPG (Japanese-style RPG) in C++ using the SDL library. The exploration mode is more or less done. Now I'm tackling the battle mode. I have been unable ...
0
votes
1answer
400 views

Generate texture for a heightmap

I've recently been trying to blend multiple textures based on the height at different points in a heightmap. However i've been getting poor results. I decided to backtrack and just attempt to recreate ...
1
vote
4answers
344 views

How to run my game outside of visual c++

I am having trouble running my game. It works fine when I run it from Visual C++, but when I try to open the .exe, it complains that it can't find SDL.dll. What should I do in order to play the game? ...
1
vote
1answer
653 views

Displaying a grid based map using C++ and sdl

I am trying to create a roguelike game using c++ and SDL. However, I am having trouble getting it to display the map, which is represented by a 2d array of a tile class. Currently, my code is this: ...
0
votes
4answers
1k views

Problem trying to lock framerate at 60 FPS

I've written a simple class to limit the framerate of my current project. But it does not work as it should. Here is the code: void FpsCounter::Process() { deltaTime = ...
3
votes
3answers
1k views

Gamestate management without evil Singletons

I wanted to use a game state management system similiar to this approach: Managing Game States in C++ But from what I've heard singletons are evil and should not be used in 99.9%. Can you tell me ...

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