All Questions
12
questions
0
votes
1
answer
368
views
Entity Component System (ECS): Entity-Exclusive Component Data Being Shared Among All Entities With That Component
I will try to keep this brief
THE CONTEXT
My basic C++ (SDL & OpenGL) 2D game engine has an ECS. I have a system called TextSystem, which requires 3 components. TransformComponent, RenderComponent,...
- 161
0
votes
1
answer
2k
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Draw 2D and 3D in the same OpenGL window
I'm creating a 3D game with OpenGL and I would like to make a toolbar in the top of the window. For that, I tried to use SDL to draw the buttons and OpenGL to draw the actual game. Here is the ...
- 8,783
0
votes
0
answers
1k
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2D Hud over 3D scene (OpenGL, SDL, C++)
My 3D world draws perfectly every time but the 2D text never draws. The code below features my latest effort using a tutorial from lighthouse3D. I get the feeling its something stupidly simple and im ...
-1
votes
1
answer
1k
views
OpenGL 2d HUD over 3d won't render anything
I'm playing around a bit with OpenGL and SDL. At the moment, I'm trying to get a HUD to display over some 3d spinning cubes. However, when I added the code to draw a 2d quad after the 3d shapes, I got ...
-1
votes
1
answer
368
views
Algorithm for maintaining a transformation matrix stack in graphics [duplicate]
I am trying to write a small 2D graphics library using SDL. I want to implement the equivalent of the Matrix stack in openGL and implement functions like pushMatrix() and popMatrix() in openGL. I can ...
0
votes
1
answer
484
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Memory leak when using glDisable(GL_TEXTURE_2D) in draw-call
I've been noticing a small memory leak in my program and I've finally been able to track down the problem.
What i'm doing is drawing out 5 rectangles to the screen by calling this function:
bool ...
- 363
2
votes
1
answer
2k
views
Convert SDL window position to OpenGL world position
I'm using SDL and OpenGL for this project. My screen at program start up is 640 x 480 and so is my glOrtho setup. So the program starts out synchronized. But my program allows the user to create a ...
- 1,765
2
votes
2
answers
2k
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Simple 2D graphics in Objective C (GNUStep)
I'm creating a simple agent-based modeling-framework and I'd like to provide some very simple visualizations. Nothing too fancy, and mainly just 2D graphics. Can I use OpenGL or SDL with Objective C ...
- 95.2k
1
vote
0
answers
842
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2D TTF Text Rendering with SDL & OpenGL Issues
So I have looked around and I haven't found the best way to actually implement this in SDL & OpenGL. At this moment I can display text to the screen with a TTF but its not really displaying the ...
- 11
5
votes
1
answer
7k
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2D Platformer Collision Handling
I am trying to create a 2D platformer (Mario-type) game and I am some having some issues with handling collisions properly. I am writing this game in C++, using SDL for input, image loading, font ...
0
votes
3
answers
2k
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Is there a 2D graphics API with both pixel perfect drawing and 2D hardware acceleration? [closed]
We are in the first stages of making a 2D game at the moment, which will focus on destructible environments and objects.
However, we have already encountered serious problems with the choice of the ...
1
vote
2
answers
327
views
What package should I be using for 2d animation?
I am working with a client on a 2d map. The map is centered on the user's position and marks various headings and points of interest. As the user moves, the headings change and the points of interest ...
- 58.3k