YataiDONNijiiro/Scripts/background/bg_collabs/funassyi.lua

-- YataiDON-HSS override of PyTaikoGreen/background/bg_collabs/funassyi.lua: overlay second-copy offset uses overlay_info.x2[1]
local DonBG4            = require("background/bg_objects/donbg/4")
local BGNormal          = require("background/bg_objects/bg_normal")
local Fever             = require("background/bg_objects/fever")
local Footer            = require("background/bg_objects/footer")
local Dancer            = require("background/bg_objects/dancer")
local RendaController   = require("background/bg_objects/renda")
local ChibiController   = require("background/bg_objects/chibi")
local DancerModel       = require("background/bg_objects/collab_dancer_model")

local COLLAB_PATH       = "background/collab/funassyi"
local MAX_DANCERS       = 5

-- BGFever: animated slide-in using anims 16-18, then horizontal tile scroll
local FunassyiBGFever   = {}
FunassyiBGFever.__index = FunassyiBGFever

function FunassyiBGFever.new()
    local self = setmetatable({}, FunassyiBGFever)
    self.name = "bg_fever_0"
    tex.load_folder(COLLAB_PATH, "bg_fever/" .. self.name)
    self.transitioned         = false
    self.horizontal_move      = tex.get_animation(16)
    self.bg_texture_move_down = tex.get_animation(17)
    self.bg_texture_move_up   = tex.get_animation(18)
    local overlay_info        = tex.get_texture_info(self.name, "overlay")
    self.overlay_width        = overlay_info and overlay_info.x2[1] or 0
    self._id_bg      = tex.get_id(self.name, "background") or 0
    self._id_overlay = tex.get_id(self.name, "overlay") or 0
    return self
end

function FunassyiBGFever:start()
    self.bg_texture_move_down:start()
    self.bg_texture_move_up:start()
end

-- ROUND 52: falling-edge re-arm -- the next start() replays the slide-in.
function FunassyiBGFever:reset()
    self.transitioned = false
end

function FunassyiBGFever:update(current_time_ms)
    self.bg_texture_move_down:update(current_time_ms)
    self.bg_texture_move_up:update(current_time_ms)
    if self.bg_texture_move_up.is_finished and not self.transitioned then
        self.transitioned = true
        self.horizontal_move:restart()
    end
    if self.transitioned then
        self.horizontal_move:update(current_time_ms)
    end
end

function FunassyiBGFever:draw()
    local y = self.bg_texture_move_down.attribute - self.bg_texture_move_up.attribute
    tex.draw_texture(self._id_bg,      { y = y })
    tex.draw_texture(self._id_overlay, { x = -self.horizontal_move.attribute, y = y })
    tex.draw_texture(self._id_overlay, { x = self.overlay_width - self.horizontal_move.attribute, y = y })
end

function FunassyiBGFever:destroy()
    tex.unload_folder(COLLAB_PATH, "bg_fever/" .. self.name)
end

-- Background

local FunassyiBackground = {}
FunassyiBackground.__index = FunassyiBackground

function FunassyiBackground.new(player_num, bpm)
    local self          = setmetatable({}, FunassyiBackground)
    self.donbg          = DonBG4.new(1, player_num, COLLAB_PATH)
    self.bg_normal      = BGNormal.Base.new(0, COLLAB_PATH)
    self.bg_fever       = FunassyiBGFever.new()
    -- ROUND 60 (r60-collab-fix-all): funassyi ships NO footer, fever or renda
    -- art (the parent constructed all three anyway -- a parent bug).  The
    -- texture name->id map is GLOBAL and name-keyed, so after the folder load
    -- fails, tex.get_id("fever_0", "overlay_l") / ("renda", "renda_0") still
    -- return ids that belong to a DIFFERENT owner of those names (verified
    -- live: l=811 r=812 / id=1128 on a fresh boot) -- and drawing them paints
    -- unrelated sheets as a black/white striped arc over the top band (the
    -- same artifact class as oshiri's texture-id-0 fever draw).  These three
    -- subsystems are therefore inert for funassyi: footer index -1 is the
    -- Footer class's own documented "no footer" mode, fever/renda get inert
    -- same-API stubs.
    self.footer         = Footer.new(COLLAB_PATH, -1)
    self.fever          = {
        start = function() end, stop = function() end,
        update = function() end, draw = function() end,
        is_visible = function() return false end,
        alpha = function() return 0 end, destroy = function() end,
    }
    self.dancer         = Dancer.BaseDancerGroup.new(0, bpm, MAX_DANCERS, COLLAB_PATH)
    self.renda          = {
        add_renda = function() end, update = function() end,
        draw = function() end, destroy = function() end,
    }
    self.chibi          = ChibiController.new(bpm, COLLAB_PATH, 0)
    self.is_clear       = false
    self.is_rainbow     = false
    -- ROUND 52 (r52-lua-divergence-fixes): reference dance_b_* count model
    -- (collab_dancer_model.lua) replaces the pre-R18 milestone counter.
    self.dancer_model   = DancerModel.new(MAX_DANCERS)
    return self
end

function FunassyiBackground:update(current_ms, bpm)
    self.donbg:update(current_ms)
    self.bg_fever:update(current_ms)
    self.fever:update(current_ms, bpm)
    self.dancer:update(current_ms, bpm)
    self.renda:update(current_ms)
    self.chibi:update(current_ms, bpm)
end

function FunassyiBackground:handle_good(player_num) self.chibi:add_chibi(player_num, false) end

function FunassyiBackground:handle_ok(player_num) self.chibi:add_chibi(player_num, false) end

function FunassyiBackground:handle_bad(player_num) self.chibi:add_chibi(player_num, true) end

function FunassyiBackground:handle_drumroll(player_num) self.renda:add_renda() end

-- ROUND 52: no renda on balloons/kusudama -- the reference build RendaEffect fires for
-- note kinds 6/9 (drumrolls) only; see background.lua.
function FunassyiBackground:handle_balloon(player_num) end

function FunassyiBackground:handle_gauge(player_num, progress, is_clear, is_rainbow, clear_progress)
    self.donbg:set_clear(is_clear)
    -- ROUND 52: both edges, re-triggerable (the reference build BgFever/FeverEffect::Process).
    if is_clear and not self.is_clear then self.bg_fever:start() end
    if not is_clear and self.is_clear and self.bg_fever.reset then self.bg_fever:reset() end
    if is_rainbow and not self.is_rainbow then self.fever:start() end
    if not is_rainbow and self.is_rainbow and self.fever.stop then self.fever:stop() end
    self.is_clear   = is_clear
    self.is_rainbow = is_rainbow

    -- ROUND 52: reference dance_b_* model, symmetric every frame.
    self.dancer_model:apply(self.dancer, progress, is_clear, clear_progress)
end

function FunassyiBackground:draw_back()
    if self.is_clear then
        if not self.bg_fever.transitioned then
            self.bg_normal:draw()
            self.bg_fever:draw()
        else
            self.bg_fever:draw()
        end
    else
        self.bg_normal:draw()
    end
    self.donbg:draw()
    self.renda:draw()
    self.dancer:draw()
    self.footer:draw()
    -- ROUND 52: covers the exit ramp, not just the raw flag.
    if self.fever.is_visible and self.fever:is_visible() then self.fever:draw() end
    self.chibi:draw()
end

function FunassyiBackground:draw_fore() end

function FunassyiBackground:destroy()
    self.donbg:destroy()
    self.bg_normal:destroy()
    self.bg_fever:destroy()
    self.fever:destroy()
    self.dancer:destroy()
    self.footer:destroy()
    self.renda:destroy()
    self.chibi:destroy()
end

return FunassyiBackground