ui demo and litte fix engine

[blogdron]

Click in image to video

Hi, this little demo includes all types of graphic elements that are in the engine. Maybe it will be useful to those who will understand how everything works. And maybe not :D

• Also there is more fun music and animated background.

• All the assets either i drew myself or took from https://opengameart.org under Public Domain CC0 License

• splash + fake loading progress bar for ui_rectangle code example

• ui_browser example code

• ui_button example code

• ui_dialog example code

• ui_option example code

• ui_slider example code

• ui_toast example code

• ui_text examle code

• ui_textbox example code

• ui_rectangle example code

• ui_spinner example code Something like this, well here :D And yes, I know my code is scary as my face since morning :)

P.S. There are two additional commits, I hope this is not a hindrance?

[orangeduck]

Very cool!