Skinning introduction
A skin is a feature of osu! who allows to custom all of the game. It enables players to derive from the original skinning elements to create their own! Skins can vary from being for-fun, themed, PRO, or be nigh impossible to play with.
This is the song selection but with 2 differents skins: at the left, the default skin, and at the right, a custom skin called - Night03 -.
A skin in osu! is a folder with images and sounds. There is also a skin.ini file to set the skin, for exemple colors, names of some files, or some precise settings of the game.
If you want to learn how to create a skin, you have a tutorial here: https://tutorial.skinship.xyz/tutorial/introduction.
In osu!, you can custom hitcircles from the standard mode (the mode where you have to click on circles). For that, you need 3 things:
- The hitcircle: it's the only tinted part of the osu! hitcircle. He's tinted depending the combo color. The file name is hitcircle.png.
- The overlay: it's piece of the osu! hitcircle. He's always above the hitcircle. The file name is hitcircleoverlay.png.
- The numbers: this is a group of 10 digits, from 0 to 9. osu! use theses files to display the number of the circle. By convension, the files are called default-n.png, where n is the digit number (0-9).
So you need 12 files to custom a osu! hitcircle. The editor generate all of these files and the settings in the skin.ini.