diff --git a/docs/music_commands.md b/docs/music_commands.md index 676d426f7..f3dee571e 100644 --- a/docs/music_commands.md +++ b/docs/music_commands.md @@ -2,146 +2,197 @@ Defined in [macros/scripts/audio.asm](https://github.com/pret/pokecrystal/blob/master/macros/scripts/audio.asm) and [audio/engine.asm:MusicCommands](https://github.com/pret/pokecrystal/blob/master/audio/engine.asm). -*See also: [Sound Engine Commands](https://github.com/pret/pokecrystal/blob/master/wiki/Sound-Engine-Commands)* +Note: Commands that are intended for the song channels (1-4) can be used by the sound effect channels (5-8) if the sound effect channel exits sound effect mode with the `toggle_sfx` command. -## musicheader n, index, address +## channel_count n + +Used at the start of each sound header to specify how many channels are used in the sound. +`n`: Number of channels [`1`, `4`] + + +## channel index, address + +Used for each channel in a sound header. +`index`: Channel number [`1`, `8`] +`address`: Pointer to the sound data ## note pitch, length -(Used on all channels) - -The high nibble is the note to play. 0 is rest, 1 is `C_`, 2 is `C#`, etc; `$C` is `B_`. -The low nibble is the length of the note. 1 gets added to this, so 0 still has a length. +Play a basic note. Used by channels 1-3. +`pitch`: Pitch of note (see [constants/audio_constants.asm](https://github.com/pret/pokecrystal/blob/master/constants/audio_constants.asm)) +`length`: Length of note [`1`, `16`] -## sound pitch, octave, intensity, frequency +## drum_note instrument, length + +Play a predefined drum note. Used by channel 4. +`instrument`: Instrument ID [`1`, `12`] (see `toggle_noise`) +`length`: Length of note [`1`, `16`] -## noise pitch, duration, intensity, frequency +## rest length + +Basic rest. Used by channels 1-4. +`length`: Length of rest [`1`, `16`] + + +## square_note length, volume, fade, frequency + +Sound effect square note. Used by channels 5-7. +`length`: Length of note [`0`, `255`] +`volume`: Initial volume [`0`, `15`] +`fade`: Volume fade [`-7`, `7`] +`frequency`: Note frequency [`0`, `65535`] + + +## noise_note length, volume, fade, frequency + +Sound effect noise note. Used by channel 8. +`length`: Length of note [`0`, `255`] +`volume`: Initial volume [`0`, `15`] +`fade`: Volume fade [`-7`, `7`] +`frequency`: Note frequency [`0`, `255`] ## `$D0`−`$D7`: octave n -(Used in channels 1-3) - -Sets the octave for the notes played on the channel. -`$D7` is the lowest octave, whereas `$D0` is the highest. +Set the octave for the notes played on the current channel. Used by channels 1-3. +`n`: New octave [`1`, `8`] -## `$D8`: notetype length[, intensity] +## `$D8`: note_type length, volume, fade/wave_instrument -(Used in channels 1-4) (When using in channel 4, the *intensity* byte is not needed) - -Sets the length multiplier of notes on the channel, and the envelope for channels 1-3 (see `intensity`). -The first byte only reads the lower 4 bits, and multiplies it by the note length. A larger number means slower playback/longer notes. `$C` is commonly used for a normal timeframe. - -The second byte is identical to the first byte in the `intensity` command. +Set persistent note properties. Used by channels 1-3. +`length`: Base note length [`1`, `15`] (use `12` for common time) +`volume`: Initial volume [`0`, `15`] for channels 1-2, [`0`, `3`] for channel 3 (see `volume_envelope`) +`fade`: Volume fade [`-7`, `7`] (applies to channels 1-2) +`wave_instrument`: Wave instrument ID (applies to channel 3) (see [audio/wave_samples.asm](https://github.com/pret/pokecrystal/blob/master/audio/wave_samples.asm)) -## `$D9`: pitchoffset octave, key +## `$D8`: drum_speed length -(Used in channels 1-3) +Set persistent note properties. Used by channel 4. +`length`: Base note length [`1`, `15`] (use `12` for common time) -Transposes all notes played on the channel by a value. -The high nibble determins how many octaves to subtract, while the low nibble is how many note values to add. -Ex: Setting a value of `$13` would make a `C_`4 play as a `D#`3. + +## `$D9`: transpose num_octaves, num_pitches + +Transpose all notes played on the current channel. Used by channels 1-3. +`num_octaves`: Number of octaves to subtract from each note +`num_pitches`: Number of pitches to add to each note ## `$DA`: tempo tempo -(Used in channel 1) +Set the tempo for all playing channels. This should only be used by channel 1. -Sets the tempo for all playing channels. This should only be called on channel 1. - -The formula to convert from this tempo to BPM is: BPM = 19200 / Tempo -This formula also works backwards to convert BPM to tempo: Tempo = 19200 / BPM +The formula to convert from this tempo to BPM is: BPM = 19200 / `tempo` +This formula also works backwards to convert BPM to tempo: `tempo` = 19200 / BPM Only set or change this value when all playing channels are triggering a note or rest at the same time, otherwise desyncs may happen. -## `$DB`: dutycycle duty_cycle +## `$DB`: duty_cycle duty_cycle -(Used on channels 1&2) - -Sets the square duty (sound) for the current channel. To change the sound for channel 3, use intensity. The only accepted values are 0-3. +Set the square duty (sound) for the current channel. Used by channels 1-2. +The only accepted values are 0-3. - 0 = 12.5% waveform: `_______¯` - 1 = 25% waveform: `______¯¯` - 2 = 50% waveform: `____¯¯¯¯` - 3 = 75% waveform: `__¯¯¯¯¯¯` (sounds the same as 25%) - -## `$DC`: intensity intensity - -(Used on channels 1-3) (Used to set instrument on channel 3) - -For channels 1&2: -This sets the volume and fade of the notes. The high nibble is the starting volume, 0 is mute, $F is max. Bit 3 determines the fade direction (0=Fade to silence, 1=Fade to max volume). The last 3 bits is how fast the fade happens. 0 is no fade, 1 is fastest fade, 7 is slowest fade. - -For channel 3: -The high nibble sets the volume of channel 3. Only 4 values are accepted (0=Mute, 1=100% volume, 2=50% volume, 3=25% volume). The low nibble sets the instrument/waveform for channel 3 to play. Crystal natively has 10 instruments, values 0-9. +To change the sound for channel 3, use `note_type` or `volume_envelope`. -## `$DD`: soundinput input +## `$DC`: volume_envelope volume, fade/wave_instrument + +Set the volume envelope for the current channel. Used by channels 1-3. +`volume`: Initial volume [`0`, `15`] for channels 1-2, [`0`, `3`] for channel 3 +`fade`: Volume fade [`-7`, `7`] (applies to channels 1-2) +`wave_instrument`: Wave instrument ID (applies to channel 3) (see [audio/wave_samples.asm](https://github.com/pret/pokecrystal/blob/master/audio/wave_samples.asm)) + +For channel 3, the only acceped `volume` values are 0-3. + +- 0 = Mute +- 1 = 100% volume +- 2 = 50% volume +- 3 = 25% volume -## `$DE`: sound_duty a, b, c, d +## `$DD`: pitch_sweep length, pitch_change -(Used on channels 1&2) - -This cycles the channel through 4 duty definitions, one per frame. -Each pair of bits defines a duty, same as the `dutycycle` command. -This is mostly only used in cries, SFX, and Jigglypuff's song in RBY. +Set pitch sweep properties. Used by channel 5. +`length`: Duration of effect [`0`, `15`] +`pitch_change`: Extent of effect [`-7`, `8`] Note: `8` is used in place of `0` -## `$DF`: `togglesfx` +## `$DE`: duty_cycle_pattern a, b, c, d + +Set duty cycle pattern (ie, pulse width modulation). Used by channels 5-6. + +This cycles the channel through 4 duty cycles, one per frame. +Each argument defines a duty cycle, same as the `duty_cycle` command. -## `$E0`: slidepitchto duration, octave, pitch +## `$DF`: toggle_sfx -(Used on channel 1) +Toggle between pitch-based songs and frequency-based sound effects. Can be used by any channel. -This bends the pitch of the note played next, and only that note. -The first byte tells how many frames to play the destination note for, before the length of the note is up. -The high nibble of the second byte is the octave of the destination note. -The low nibble of the second byte is the destination note. If rest is used as the destination note, then the whole destination pitch becomes `$0000` (the lowest pitch). +Note: Similar to the pokered command `execute_music`, however `execute_music` can only be used on channels 5-8 and can not be disabled for the duration of the sound once it is enabled. -## `$E1`: vibrato delay, extent +## `$E0`: pitch_slide duration, octave, pitch -(Used on channels 1-3) +Bend the pitch of the next note played, and only that note. Used by channel 1. +`duration`: Duration of the target note after slide effect +`octave`: Target octave +`pitch`: Target pitch (see [constants/audio_constants.asm](https://github.com/pret/pokecrystal/blob/master/constants/audio_constants.asm)) -Modifies pitch after the timer runs out, making notes sound less "flat". -First byte will set the delay, decrementing by one each frame. When it tries subtracting from 0, it starts decrementing from the speed timer. -Second byte, high nibble is the speed timer. It will decrement by one each frame, when it tries decrementing from 0, it mods the frequencey by half of pitch depth, and resets itself to it's initial value. -Second byte, low nibble is the pitch depth. Half of this value will alternate between adding to the pitch, and subtracting from the pitch each time speed timer resets. When this is an odd number, the value added to the pitch will be greater than the value subtracted from the pitch. -Ex: normal pitch of 405, if pitch depth = 3, it will alternate between 407 and 404. Speed timer does NOT reset when a new note is played. only when the song stops or changes. (Also, because a timer counts 0, a timer of 5 will take 6 frames to change.) + +## `$E1`: vibrato delay, extent, rate + +Apply vibrato to current channel. Used by channels 1-3. +`delay`: Delay until vibrato effect begins for each note [`0`, `255`] +`extent`: Amplitude of vibrato [`0`, `15`] +`rate`: Frequency of vibrato [`0`, `15`] ## `$E2`: unknownmusic0xe2 unknown -## `$E3`: togglenoise id +## `$E3`: toggle_noise id -(Used on channel 4) +Set the "drum kit" to be used if it is currently unset. Mute the channel otherwise. Used by channel 4. +`id`: Drum kit ID [`0`, `5`] (see [audio/drumkits.asm](https://github.com/pret/pokecrystal/blob/master/audio/drumkits.asm)) -Sets the "drum kit" to be used. This needs to be called before channel 4 can make any noise. -Calling it more than once in a song will mute the channel. (Keep it out of loops!) +Note: The drum kit ID is initially unset at the start of a song. When muting the channel, the `id` argument must not be present. -## `$E4`: panning tracks +## `$E4`: force_stereo_panning left_enable, right_enable -## `$E5`: volume volume +Set left/right stereo output for the current channel, regardless of user's stereo setting. Used by channels 1-4. +`left_enable`: `TRUE`/`FALSE` +`right_enable`: `TRUE`/`FALSE` -## `$E6`: tone tone -(Used on channel 1-3) +## `$E5`: volume left_volume, right_volume -This modifies the pitch of the notes (fine tuning). -It makes notes sound better if multiple channels play the same note simultaneously. -A lot of GSC songs set the main melody channel with a value of 1, and the secondary channel (not bass) as 2. +Set master volume for left/right speakers. Typically only used by channel 1. +`left_volume`: Left speaker volume [`0`, `7`] +`right_volume`: Right speaker volume [`0`, `7`] + +Note: Minimum volume, `0`, is not muted. + + +## `$E6`: pitch_offset pitch_offset + +Adjust the pitch of all notes on the current channel. Used by channels 1-3. +`pitch_offset`: Frequency adjustment of each pitch + +Note: Similar to the pokered command `toggle_perfect_pitch`. `toggle_perfect_pitch` can be replaced with a combination of `pitch_offset 1` and `pitch_offset 0`. ## `$E7`: unknownmusic0xe7 unknown @@ -153,67 +204,85 @@ A lot of GSC songs set the main melody channel with a value of 1, and the second ## `$E9`: tempo_relative value -## `$EA`: restartchannel address +## `$EA`: restart_channel address -## `$EB`: newsong id +## `$EB`: new_song id -## `$EC`: sfxpriorityon +## `$EC`: sfx_priority_on -## `$ED`: sfxpriorityoff +## `$ED`: sfx_priority_off ## `$EE`: unknownmusic0xee address -## `$EF`: stereopanning tracks +## `$EF`: stereo_panning left_enable, right_enable + +Set left/right stereo output for the current channel, if the user has stereo mode enabled. Used by channels 1-4. +`left_enable`: `TRUE`/`FALSE` +`right_enable`: `TRUE`/`FALSE` -## `$F0`: sfxtogglenoise id +## `$F0`: sfx_toggle_noise id + +Set the "drum kit" to be used if it is currently unset. Mute the channel otherwise. Used by channel 8. +`id`: Drum kit ID [`0`, `5`] (see [audio/drumkits.asm](https://github.com/pret/pokecrystal/blob/master/audio/drumkits.asm)) + +Note: The drum kit ID is initially unset at the start of a song. When muting the channel, the `id` argument must not be present. -## `$F1`: `music0xf1` +## `$F1`: music0xf1 -## `$F2`: `music0xf2` +## `$F2`: music0xf2 -## `$F3`: `music0xf3` +## `$F3`: music0xf3 -## `$F4`: `music0xf4` +## `$F4`: music0xf4 -## `$F5`: `music0xf5` +## `$F5`: music0xf5 -## `$F6`: `music0xf6` +## `$F6`: music0xf6 -## `$F7`: `music0xf7` +## `$F7`: music0xf7 -## `$F8`: `music0xf8` +## `$F8`: music0xf8 -## `$F9`: `unknownmusic0xf9` +## `$F9`: unknownmusic0xf9 -## `$FA`: setcondition condition +## `$FA`: set_condition condition -## `$FB`: jumpif condition, address +## `$FB`: sound_jump_if condition, address -## `$FC`: jumpchannel address +## `$FC`: sound_jump address -## `$FD`: loopchannel count, address +## `$FD`: sound_loop count, address + +Execute a branch of sound commands a total of `count` times. +`count`: Number of times to execute the loop (including the first execution) (use `0` for an infinite loop) +`address`: Pointer to the start of the loop of sound commands -## `$FE`: callchannel address +## `$FE`: sound_call address + +Execute a branch of sound commands, returning to the call point once a `sound_ret` command is reached. +`address`: Pointer to the branch of sound commands to call -## `$FF`: `endchannel` +## `$FF`: sound_ret + +Return to the caller (ie, `sound_call`) if in a sub branch. End the sound otherwise. diff --git a/macros/scripts/audio.asm b/macros/scripts/audio.asm index 6e99cc3b0..92654ff9a 100644 --- a/macros/scripts/audio.asm +++ b/macros/scripts/audio.asm @@ -118,11 +118,6 @@ toggle_sfx: MACRO db toggle_sfx_cmd ENDM -; for compatibility with red -execute_music: MACRO - toggle_sfx -ENDM - enum pitch_slide_cmd ; $e0 pitch_slide: MACRO db pitch_slide_cmd @@ -150,7 +145,9 @@ ENDM enum toggle_noise_cmd ; $e3 toggle_noise: MACRO db toggle_noise_cmd - db \1 ; drum kit + IF _NARG > 0 + db \1 ; drum kit + ENDC ENDM enum force_stereo_panning_cmd ; $e4 @@ -175,11 +172,6 @@ pitch_offset: MACRO bigdw \1 ; pitch offset ENDM -; for compatibility with red -toggle_perfect_pitch: MACRO - pitch_offset 1 -ENDM - enum unknownmusic0xe7_cmd ; $e7 unknownmusic0xe7: MACRO db unknownmusic0xe7_cmd @@ -235,7 +227,9 @@ ENDM enum sfx_toggle_noise_cmd ; $f0 sfx_toggle_noise: MACRO db sfx_toggle_noise_cmd - db \1 ; drum kit + IF _NARG > 0 + db \1 ; drum kit + ENDC ENDM enum music0xf1_cmd ; $f1