83 lines
3.2 KiB
Lua
83 lines
3.2 KiB
Lua
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---------------------------------------------------------------------------
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-- Tracking Noise channel volume peaks
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-- by AnS, 2012
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---------------------------------------------------------------------------
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-- Showcases following functions:
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-- * sound.get()
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-- * taseditor.markedframe()
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-- * taseditor.getmarker()
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-- * taseditor.setmarker()
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-- * taseditor.getnote()
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-- * taseditor.setnote()
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---------------------------------------------------------------------------
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-- Usage:
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-- Run the script, unpause emulation.
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-- When the "Auto function" checkbox is checked, the script will
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-- automatically create Markers on various frames according to ingame music.
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-- These Markers should help you see music patterns,
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-- so you can adjust input precisely creating nice Tool-Assisted dances.
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--
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-- This script uses Noise channel volume as an indicator for setting Markers,
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-- but it's possible to use any other property of sound channels
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-- as a factor to decide whether to set Marker on current frame.
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--
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-- The script was tested on Super Mario Bros, Megaman and Duck Tales.
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-- You may want to see it in slow-mo. Use -/= hotkeys to change emulation speed.
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--
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-- To create customized script for your game, first use SoundDisplay.lua
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-- to collect and analyse statistics about ingame music. Then choose
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-- which channel you want to sync your input to. Finally, change this script
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-- so that Markers will be created using new set of rules.
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---------------------------------------------------------------------------
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NOISE_VOL_THRESHOLD = 0.35;
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function track_changes()
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if (taseditor.engaged()) then
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current_frame = movie.framecount();
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if (last_frame ~= current_frame) then
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-- Playback has moved
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-- Get current value of indicator for current_frame
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snd = sound.get();
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indicator = snd.rp2a03.noise.volume;
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-- If Playback moved 1 frame forward, this was probably Frame Advance
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if (last_frame == current_frame - 1) then
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-- Looks like we advanced one frame from the last time
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-- Decide whether to set Marker
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if (indicator > NOISE_VOL_THRESHOLD and last_frame_indicator_value == 0) then
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-- this was a peak in volume! ____/\____
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-- Set Marker and show frequency of noise+triangle in its Note
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SetSoundMarker(current_frame - 1, "Sound: " .. (snd.rp2a03.noise.regs.frequency + snd.rp2a03.triangle.regs.frequency));
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end
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end
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last_frame = current_frame;
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last_frame_indicator_value = indicator;
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end
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else
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gui.text(1, 9, "TAS Editor is not engaged.");
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end
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end
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function SetSoundMarker(frame, new_note)
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if (taseditor.markedframe(frame)) then
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-- this frame is already marked
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old_note = taseditor.getnote(taseditor.getmarker(frame));
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-- check if the Note of the Marker already contains new_note text
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if (string.find(old_note, new_note) == nil) then
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-- append new_note text to the Marker's Note
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taseditor.setnote(taseditor.getmarker(frame), old_note .. " " .. new_note);
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end
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else
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-- this frame isn't marked
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-- create new Marker here
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new_marker = taseditor.setmarker(frame);
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taseditor.setnote(new_marker, new_note);
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end
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end
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last_frame = 0;
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last_frame_indicator_value = 0;
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taseditor.registerauto(track_changes);
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