88 lines
2.3 KiB
Lua
88 lines
2.3 KiB
Lua
---@type engine.module
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local module = {}
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local abot, sound, rate, channels
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local spectrum = {}
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local visualizers = {}
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require("modules.luafft")
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local function divide(list, factor)
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for i, v in ipairs(list) do
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list[i] = list[i] / factor
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end
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end
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---@param character engine.character
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function module.onAdded(character)
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print(character.stagePosition:Add(character.sprite.position))
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abot = Atlas("sprites/characters/abot/abotSystem")
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abot:PlayAnimation("")
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abot.layer = character.sprite.layer - 0.1
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for i = 1, 7 do
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print(i)
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local viz = Rect("sprites/characters/abot/aBotViz.png", "sprites/characters/abot/aBotViz.xml")
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viz.position = abot.position:Add(Vector2(i * 50 + 20, 50))
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viz.layer = 500
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viz:Frame(string.format("viz%s", i), 5)
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visualizers[i] = viz
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end
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end
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function module.onCreate(song)
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local audiopath = string.format("songs/%s/Inst.ogg", song)
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print(audiopath)
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sound = love.sound.newSoundData(audiopath)
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rate = sound:getSampleRate()
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channels = sound:getChannels()
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end
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function module.onBeat(beat)
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-- if beat % 2 == 0 then
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abot:PlayAnimation()
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-- end
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end
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function module.onUpdate(dt, el)
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local curSample = inst:tell('samples')
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local wave = {}
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local size = next_possible_size(2048)
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if channels == 2 then
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for i = curSample, (curSample + (size - 1) / 2) do
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local sample = (sound:getSample(i * 2) + sound:getSample(i * 2 + 1)) * 0.5
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table.insert(wave, complex.new(sample, 0))
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end
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else
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for i = curSample, curSample + (size - 1) do
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local sample = (sound:getSample(i * 2) + sound:getSample(i * 2 + 1)) * 0.5
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table.insert(wave, complex.new(sample, 0))
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table.insert(wave, complex.new(sound:getSample(i), 0))
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end
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end
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local spec = fft(wave, false)
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--local reconstructed = fft(spec,true)
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--divide(reconstructed,size)
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divide(spec, size / 2)
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spectrum = spec
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local division = 142.857142857
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local actuali = 1
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for i=1, #spectrum/division do
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local n = spectrum[i]:abs()
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visualizers[actuali]:Frame(string.format("viz%s", actuali), math.floor(n / 0.06) > 5 and 0 or 5 - math.floor(n / 0.06))
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actuali = actuali + 1
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end
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end
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function module.onClose()
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end
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return module
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