Make A Sprite

[uncleBen]

Turns your bmp image into a masked sprite image which you can then save onto disk.

To make a sprite, first make sure that the area you want to be transparent is white in the original drawing.
Then
1) open the bmp file;
2) choose create sprite from the menu;
3) and when it says "Creating sprite... Done!", you can save the sprite as a bmp file.

Note: Since I was too lazy to write a flushing/delsegmenting routine, the sprite image only gets flushed after it's finished. That means, avoid covering up the window while making a sprite or you'll have to start over again.

#Edit: Replaced previous version with version 1: bigger sprites, .bmp extension automatically added to saved files and a progress bar.

[uncleBen]

Changes:
* Controls are relative to display settings, meaning that you can mask bigger sprites using a bigger resolution.
* Filedialogs open the folder where you last opened or saved an image.
* Other minor fixes.