0
votes
1answer
74 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
38 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 ...
1
vote
1answer
82 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
1answer
80 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
303 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
56 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 ...
0
votes
2answers
204 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 ...
3
votes
2answers
272 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. ...
-1
votes
2answers
233 views

My 2D collision code does not work as expected. How do I fix it?

I have a simple 2D game with a tile-based map. I am new to game development, I followed the LazyFoo tutorials on SDL. The tiles are in a bmp file, but each tile inside it corresponds to an internal ...
1
vote
2answers
223 views

How do I cap rendering of tiles in a 2D game with SDL?

I have some boilerplate code working, I basically have a tile based map composed of just 3 colors, and some walls and render with SDL. The tiles are in a bmp file, but each tile inside it corresponds ...
0
votes
2answers
903 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 ...
2
votes
1answer
164 views

How to alter image pixels of a wild life bird?

Hello so I was hoping someone knew how to move or change color and position actual image pixels and could explain and show the code to do so. I know how to write pixels on a surface or screen-surface ...
0
votes
1answer
309 views

Data-driven animations

Say you are using C/SDL for a 2D game project. It's often the case that people use a structure to represent a frame in an animation. The struct consists of an image and how much time the frame is ...