furnace/doc/3-pattern/README.md

patterns

the pattern view allows you to edit the song.

a pattern consists of columns ("channels") and numbered rows. each column has several subcolumns in this order:

1. note
2. instrument
3. volume
4. effects, split into effect type and effect value

all columns are represented in hexadecimal, except for the note column.

row highlights show beats and measures, and are configured in the the Speed window.

cursor and selection

you may change the cursor position by clicking anywhere on the pattern.

to select an area, press and hold the left mouse button. then drag the mouse and release the button to finish selection.

right-clicking within the pattern view brings up a pop-up menu with everything in the edit menu that makes sense for entering data or altering a selected area.

channel bar

using the channel bar, you may adjust several aspects of the channel display.

clicking on a channel name mutes that channel.

double-clicking or right-clicking it enables solo mode, in which only that channel will be audible.

clicking the ++ at the top left corner of the pattern view cycles through three channel bar view modes:

• Compact: shows only channel names.
• Expanded: as shown above. adds buttons:
  • -: collapse visible columns. changes to + when columns are hidden; click to expand them.
  • <: disables the last effect column and hides it. effects are not deleted...
  • >: adds an effects column. if one previously existed, its contents will be preserved.
• Pattern names: adds a text field with which one can name the current pattern. pattern names are also visible when hovering over a pattern in the order list.

right-clicking the ++ toggles the visualizer, which is active only during playback.

to rename and/or hide channels, open the Channels window via the window menu.

input

note input

• pressing any of the respective keys will insert a note at the cursor's location, then advance to the next row (or otherwise according to the Edit Step.)
• note off turns off the last played note in that channel (key off for FM; note cut otherwise).
• note release triggers macro release (and in FM channels it also triggers key off).
• macro release does the same as above, but does not trigger key off in FM channels.
• toggle edit enables and disables editing. when editing is enabled, the cursor's row will be shaded red.

instrument/volume input

type any hexadecimal number (0-9 and A-F). the cursor will move by the Edit Step when a suitable value is entered.

effect input

works like the instrument/volume input.

each effect column has two subcolumns: effect and effect value. if the effect value is not present, it is treated as 00.

most effects run until canceled using an effect of the same type with effect value 00, with some exceptions.

here's a list of effect types.

keyboard shortcuts

these are the default key functions. all keys are configurable in the Keyboard tab of the Settings window.

key	action
Up/Down	move cursor up/down by one row or the Edit Step (configurable)
Left/Right	move cursor left/right
PageUp	move cursor up by 16 rows
PageDown	move cursor down by 16 rows
Home	move cursor to beginning of pattern
End	move cursor to end of pattern
Shift-Home	move cursor up by exactly one row, overriding Edit Step
Shift-End	move cursor down by exactly one row, overriding Edit Step
Shift-Up	expand selection upwards
Shift-Down	expand selection downwards
Shift-Left	expand selection to the left
Shift-Right	expand selection to the right
Backspace	delete note at cursor and/or pull pattern upwards (configurable)
Delete	delete selection
Insert	create blank row at cursor position and push pattern
Ctrl-A	auto-expand selection (select all)
Ctrl-X	cut selection
Ctrl-C	copy selection
Ctrl-V	paste selection
Ctrl-Z	undo
Ctrl-Y	redo
Ctrl-F1	transpose selection (-1 semitone)
Ctrl-F2	transpose selection (+1 semitone)
Ctrl-F3	transpose selection (-1 octave)
Ctrl-F4	transpose selection (+1 octave)
Space	toggle note input (edit)