Elysian Shadows

Hey,

I'm new here, but I have been following you (the team) on YouTube for quite some time. I have been programming a map editor in C++/SDL and have come to the point where I need to save my map data. My map data consists of a map.txt file (no problem creating it) and a tile.png. I know that SDL does not have built in functions to save PNG's, and seeing how I am not very good in C++ or writing filetype savers for the matter, I went on a google hunt for a function. I have found it at http://encelo.netsons.org/_download/savesurf.tar.gz .
I have downloaded that, included pngfuncs.c and pngfuncs.h into my project, and tried to build my project. Of course it failed because I did not have libpng in my includes. So, I went and got libpng, compiled it (first time compiling a package, but I don't think I failed D:), and included it into my project, etc. I built my project this time and everything went well. Upon launching my application, and attempting to save my map, I encountered this Soo, I decided to research on this issue, and found this http://www.libpng.org/pub/png/pngfaq.html#mismatch .

I checked my headers and libs, and they are all at version 1.2.29, I even replaced the libpng.dll in my application directory, but that message still pops up.
I honestly don't know what to do now.

If you're using SDL, why not just add SDL_image? http://www.libsdl.org/projects/SDL_image/
EDIT:
Oh, and welcome to the forums. We have cookies.

Is it possible that you have an older version of png.h in your OS' system folder that the linker is accessing before it looks in the project folder?

rolland wrote:If you're using SDL, why not just add SDL_image? http://www.libsdl.org/projects/SDL_image/
EDIT:
Oh, and welcome to the forums. We have cookies.

^This, libpng requires other files to be in your project folder such as jpeg.dll, zlib1.dll and SDL_image.dll, try this: http://www.lazyfoo.net/SDL_tutorials/lesson03/index.php. Lazyfoo shows you how to set up SDL_image in great detail.

rolland wrote:If you're using SDL, why not just add SDL_image? http://www.libsdl.org/projects/SDL_image/
EDIT:
Oh, and welcome to the forums. We have cookies.

I already have SDL_image, but it doesn't save PNG's, it just loads them.... unless I am dumb D:

Is it possible that you have an older version of png.h in your OS' system folder that the linker is accessing before it looks in the project folder?

I don't think so since this is the first time I used libpng...

xiphirx wrote:

rolland wrote:If you're using SDL, why not just add SDL_image? http://www.libsdl.org/projects/SDL_image/
EDIT:
Oh, and welcome to the forums. We have cookies.

I already have SDL_image, but it doesn't save PNG's, it just loads them.... unless I am dumb D:

Is it possible that you have an older version of png.h in your OS' system folder that the linker is accessing before it looks in the project folder?

I don't think so since this is the first time I used libpng...

I don't really see why you need to save the image, are you changing the tilesheet in some way during the map editing process? Otherwise you could just copy/move the original tilesheet to the map file location.

Yes, I am allowing the user to add tiles as they build the map.

Double-Posting for update:

Well gee.. this is embarrassing
I figured out that I put the old png.h in my project directory, and VS used that instead of the one in my include directory...

It saves PNGs now, but the colors are a bit messed up... I'm going to try and remedy that...

EDIT: fixed! Thanks all

xiphirx wrote: Well gee.. this is embarrassing
I figured out that I put the old png.h in my project directory, and VS used that instead of the one in my include directory...

jk, glad you fixed it

lol, I'm on to my next roadblock, rotating specific parts of a surface

xiphirx wrote:lol, I'm on to my next roadblock, rotating specific parts of a surface

Glad you fixed it, i saw a post on gamedev that was about the colors being messed up and there was a solution too, guess im a bit late though