Strange pixelart compression

[grzesiek11]

Hi. I made a project that show a template checkers board-like world. But I excepted something other than this:

Cause I've got THAT in resources:

Maybe it happened because of scaling? Code here:
https://pastebin.com/dhPqLLd2

Sorry for my grammar, I'm from Poland.

[eXpl0it3r]

Well you're not properly understanding what your if condition does. x % 2 == 0 checks for dividable by two, so it skips every other place creating your checkerboard look.

What was your intention?

[Hapax]

You really shouldn't be loading textures every frame of your main loop, especially once per tile for so many tiles!

When you set the first texture for the rectangle shape, it determines the size of the texture rectangle based on the size of the texture. Unfortunately, you have no loaded texture at the time of assigned the texture to the rectangle shape so the rectangle shape's size is zero. This texture rectangle is never updated...

[grzesiek11]

[...]What was your intention?

Warning! Bad graphics editing here!

You really shouldn't be loading textures every frame of your main loop, especially once per tile for so many tiles!

I figured that out, but I don't know how to change this. And, it isn't my biggest problem for now.

When you set the first texture for the rectangle shape, it determines the size of the texture rectangle based on the size of the texture. Unfortunately, you have no loaded texture at the time of assigned the texture to the rectangle shape so the rectangle shape's size is zero. This texture rectangle is never updated...

Thanks. I will try it.

[Hapax]

It will be your next problem though as loading from a file can significantly slow down your frame.

Load both textures before the loop and then set the sprite to the texture you want to use before drawing it. This is the option closest to your current design and allows the two image files to be left as they are.

A better option, though, is to place both the textures into one image file and load it as one texture (before the main loop). Then, for each tile, just set the texture rectangle to cover the part you want to use. This can also significantly increase performance even over the previous version.

Better still, use a tile map object, which will be a single vertex array that draws all tiles in one go. This will also require the tiles to be in one image.
A simple example of this is available in SFML's vertex array tutorial:
https://www.sfml-dev.org/tutorials/2.5/graphics-vertex-array.php#example-tile-map

If you need more flexibility, you may want to create your own vertex array or use something like Selba Ward's Tile Map, which does it all for you