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Game Module: be-mu

About

History:

This mode was added in the 3.0 beta era, starting off life as a simple mode with no keysounds or even using the correct keys. The familiar 7K setup we know and love was added later in 2005.

The mode did not see much use and fell into having a broken notesloader around the summer of 2010, making it not work with older BMS files, or files with BME or BML extensions. Many files were misinterpreted or just did not load at all, and some were even seen as po-mu songs when they were not. The game also wiped any BMS charts with the same difficulty or ’level’, meaning the multichart methods BMS authors used were non-functional. The overdue revamp of the loading system in 2021 and 2022 fixed many of these bugs, allowing this mode to function and flourish once more. As of Alpha 4.14.0 the be-mu mode parsing support is almost complete, with only #TOTAL and #RANK support left to implement.

Introduced:

5 Key (LW/LB/CW/RB/RW/Scratch):

First Seen:

  • StepMania v3.0 beta 6 - (BM-Single) (1 January 2003)
  • StepMania v3.0.2 - (BM-double) (28 October 2003)
  • sm-ssc v1.2.5 - (beat-versus5) (11 May 2011)

Replaced by:

  • StepMania v3.0 beta 6 - (single) (15 September 2002)

Replaced by:

  • StepMania v3.0.2 - (single5) (25 September 2004)
  • StepMania v3.0.2 - (double5) (25 September 2004)

Replaced by:

  • StepMania v4.0 CVS - (beat-single5) (7 October 2005)
  • StepMania v4.0 CVS - (beat-double) (7 October 2005)

Replaced by:

  • sm-ssc v1.2.5 - - (beat-double5) (7 October 2005)

7 Key (FLW/LB/LW/CB/RW/RB/FLW/Scratch):

First Seen:

  • StepMania v3.0 beta 6 - (BM-Single) (1 January 2003) (Non-Functional)
  • StepMania v3.0.2 - (BM-double7) (28 October 2003)
  • sm-ssc v1.2.5 - (beat-versus7) (11 May 2011)

Replaced by:

  • StepMania v3.0.2 - (BM-single7) (28 October 2003)

Replaced by:

  • StepMania v3.0.2 - (single7) (25 September 2004)
  • StepMania v3.0.2 - (double7) (25 September 2004)

Replaced by:

  • StepMania v4.0 CVS - (beat-single7) (7 October 2005)
  • StepMania v4.0 CVS - (beat-double7) (7 October 2005)

Replaced by:

  • StepMania v4.0 CVS - (beat-single7) (7 October 2005)
  • StepMania v4.0 CVS - (beat-double7) (7 October 2005)

mode renamed to be-mu (12th December 2021)

IIDX 5 and 7 Key (FLW/LB/LW/CB/RW/RB/FLW/Scratch):

First Seen:

  • StepMania v3.0.2 - (single7) (13 February 2004)
  • StepMania v3.0.2 - (double7) (13 February 2004)
  • StepMania v3.0.2 - (single5) (13 February 2004)
  • StepMania v3.0.2 - (double5) (13 February 2004)
  • StepMania v3.0.2 - (single5 (edit)) (13 February 2004)
  • StepMania v3.0.2 - (double5 (edit)) (13 February 2004)

Removed:

  • StepMania v3.0.2 - (single7) (25 September 2004)
  • StepMania v3.0.2 - (double7) (25 September 2004)
  • StepMania v3.0.2 - (single5) (25 September 2004)
  • StepMania v3.0.2 - (double5) (25 September 2004)
  • StepMania v3.0.2 - (single5 (edit)) (25 September 2004)
  • StepMania v3.0.2 - (double5 (edit)) (25 September 2004)

This mode was merged back into the ‘bm’ mode due to a duplication of styles. The IIDX side of the simulator was barely used, so it made sense to move towards the BMS specification which was more common at the time, and this was also used for early dance based songs as well, (4 panel and 6 panel BMS files).

This mode is parser specific. It will only load and parse items designed for the BeMusic Script.

The table below lists the supported files and their types that be-mu supports, their key/button value and the original mode the parser is used for (if any).

File TypeLabelOriginal ModeKey Values SupportedNotes
.bms/.bme/.bmlBMSbe-mu6k / 12k / 8k / 16k5k+scratch / 7k+scratch be-mu charts

Game play

This mode is played default in down scroll, with the note receptors at the bottom of the screen. There is a ‘scratch’ lane designed to be a rotary controller, and 5 or 7 buttons which need to be pressed when the item reaches the receptor. This game mode cannot play po-mu charts any longer as that now is done via a different loader.

Mechanics

key sounded

key sounded notes exist in this mode! This means buttons you press will add to the song being played. Similarly there can be percussion and other sound effects added to these. Due to the nature of key sounded charts, they take longer to load and compile than other charts, so do not be suprised if you see a ’loading screen’ for be-mu charts!

Play Styles

Grading / Accuracy

Scoring

Health Bar

Modding

Charting

Controls

Trivia

BMS charts originally were used for DDR and SOLO mapping in 1999, and had some obscure channel mapping long since lost to the known world - (no-one uses this methodology anymore). However, the notesloaders can still load them, when the BMS load was expanded, it was decided to keep this legacy in the code.

bemu once incorporated loadng all of the BMS type charts, including PMS, this unfortuanately caused a lot of charts to break and not load correctly in older builds of SM5 so this behaviour was removed.

The old kb7 mode used a custom channel methodology built into BMS in the early SSC builds. This behaviour was also maintained in the rewrite so those old charts work, however the mode style is different in Project OutFox now.

Although the original spec of BMS supported mines, these were not implemented in older builds of SM5. This support has been added in Project OutFox.

Written and Maintained with ♡ by Squirrel