TO LOAD THIS PICO-8 CART, in immediate mode, type: load #fillp_editor

VVHAT'S NEW ?
(03-29-22)

Updated main code to paste properly even if from an outside source like internet or notepad.
Updated demo code with helpful notes inside the code to explain exactly how it works. (SEE BELOW).

(03-28-22)

Fixed CRASH when attempting to scroll empty field.
Fixed overlapping sprite information.

(03-27-22)

New method for manipulation of pattern blocks.
Overhaul button state recognition and reaction code.
Improved extra button view. No longer do 2-special buttons appear at one time.
Added mirror-X and mirror-Y.
Added 90-degree rotation.

(03-26-22)

Added ability to scroll pattern in edit. thank you, @beanborg for the suggestion!
To use hold down the ❎ key and press an arrow in the direction you wish to scroll the pattern. Pattern will wrap around edges.

(03-21-22)

Pattern can now be seen changing above you as you enter it.
Added INVERT button in bottom-right-hand corner.
Added 2-line information below to show exactly what code creates the visible pattern above.
Adjusted code slightly for new visual margins and information.
? if you come across a bug or there is something you would like changed or added, please let me know!

OVERVIEW:
This program will let you not only create single 4x4 patterns and see them as you enter them, but you can have a whole set, up to 256 if you like ! and even includes the unique 3-flags of TRANSPARENCY, SPRITE, and GLOBAL for each FILLP() pattern.
With new suggestion by beanborg you can now hold down the ❎ key and scroll with wrap ability. Just hold down the ❎ key and while it is held, press the arrow in the direction you want to scroll your pattern.

KEYS TO USE:

Use arrow keys to navigate 4x4 frame. Cursor does not wrap but hits edges where additional commands can be seen.
press ?️ to plot or unplot pixel in the