167 lines
6.2 KiB
Lua
167 lines
6.2 KiB
Lua
-- YataiDON-HSS override of PyTaikoGreen/background/bg_objects/bg_fever.lua
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--
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-- ROUND 12. The cabinet's gogo/clear backdrop is
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-- enso/background/bg_fever_a_{01,02,03}.nulm: a 1920x540 stage (the lower half
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-- of the screen, same anchor as bg_nomal) made of one static plate plus one to
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-- three named `scroll_*_mc` strips, each sliding at a constant px/frame with a
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-- fixed repeat period. There is no flipbook anywhere in it, so the whole rig
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-- ports as: plate + per-strip {tile, period, px/s}, replayed here.
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--
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-- The measured numbers live in Scripts/background/bg_data/bg_fever.lua,
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-- generated by scratchpad/r12bg/bgfever.py. If that table is missing this
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-- falls back to drawing the static plate only -- never to the parent's art,
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-- because Graphics/background/bg_fever/* is fully ours (every texture name the
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-- generated id map declares is either a shipped layer or an 8x8 transparent
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-- stub).
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local ok, DATA = pcall(require, "background/bg_data/bg_fever")
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if not ok or type(DATA) ~= "table" then DATA = {} end
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local ArcadeBGFever = {}
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ArcadeBGFever.__index = ArcadeBGFever
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-- The cabinet wipes normal->fever over `normal_fever` (root frames 1..29 at
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-- 60 fps). We cannot reproduce the wipe with one texture, so it is a fade of
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-- the same length, and `transitioned` flips when it ends -- that is the flag
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-- background.lua uses to stop drawing bg_normal underneath.
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--
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-- ROUND 52 (r52-lua-divergence-fixes): the wipe now runs on BOTH edges and is
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-- re-triggerable, matching the reference build `EnsoGraphicBgFever::Process`
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-- (EnsoGraphicBgFever.obj.c:297-308): the cached flag at +88 is compared
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-- against `IsNormaClear` EVERY frame, and each change of state GotoAndPlay's a
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-- clip -- `normal_fever` on the rising edge, `fever_normal` on the falling
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-- edge. The old `started`/`transitioned` one-way latch meant only the FIRST
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-- clear ever wiped and a gauge dropping below the norma hard-cut the fever
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-- backdrop in a single frame. `stop()` is the falling-edge clip (a fade of
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-- the same 29-frame length, from wherever the current fade sits, so an edge
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-- mid-wipe reverses smoothly), and `start()` re-arms after it.
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-- `is_visible()` is the new flag background.lua uses to keep drawing this
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-- object while the exit fade is still alive.
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local TRANSITION_MS = 29000 / 60
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function ArcadeBGFever.new(index, path)
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local self = setmetatable({}, ArcadeBGFever)
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self.name = "bg_fever_" .. index
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self.path = path or "background"
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tex.load_folder(self.path, "bg_fever/" .. self.name)
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self.transitioned = false
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self.started = false
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self.elapsed = 0
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self.last_ms = nil
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self.fade = anim.fade(TRANSITION_MS, {
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initial_opacity = 0.0,
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final_opacity = 1.0,
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loop = false
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})
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self.layers = {}
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local d = DATA[self.name]
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if d and d.layers then
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for _, l in ipairs(d.layers) do
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local id = tex.get_id(self.name, l.tex)
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if id then
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local period = l.period or 0
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table.insert(self.layers, {
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id = id,
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period = period,
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vx = l.vx or 0,
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-- enough copies to cover 1920 px whatever the phase
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n = (period > 0) and (math.ceil(1920 / period) + 1) or 0
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})
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end
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end
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end
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if #self.layers == 0 then
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-- fail soft: the generated table is missing or named textures this
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-- folder does not have. Draw the one name every slot ships.
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local id = tex.get_id(self.name, "background")
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if id then table.insert(self.layers, {id = id, period = 0, vx = 0, n = 0}) end
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end
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return self
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end
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function ArcadeBGFever:start()
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if self.started then return end
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self.started = true
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self.transitioned = false
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-- `normal_fever`: wipe in from wherever the (possibly mid-exit) fade sits.
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local from = self.fade and self.fade.attribute or 0.0
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self.fade = anim.fade(TRANSITION_MS, {
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initial_opacity = from,
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final_opacity = 1.0,
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loop = false
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})
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self.fade:start()
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end
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-- ROUND 52: falling edge (`fever_normal`). Re-arms start() for the next clear.
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function ArcadeBGFever:stop()
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if not self.started then return end
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self.started = false
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self.transitioned = false
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local from = self.fade and self.fade.attribute or 1.0
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self.fade = anim.fade(TRANSITION_MS, {
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initial_opacity = from,
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final_opacity = 0.0,
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loop = false
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})
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self.fade:start()
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end
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-- ROUND 52: true while anything of this backdrop is on screen -- entering,
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-- steady, or exiting. background.lua draws bg_normal beneath whenever the
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-- fever plate is not yet (or no longer) fully opaque.
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function ArcadeBGFever:is_visible()
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if self.started then return true end
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return (self.fade.attribute or 0) > 0.001 and not self.fade.is_finished
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end
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function ArcadeBGFever:update(current_time_ms)
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if self.last_ms then
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local dt = current_time_ms - self.last_ms
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if dt > 0 and dt < 500 then self.elapsed = self.elapsed + dt end
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end
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self.last_ms = current_time_ms
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if not self.transitioned then
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self.fade:update(current_time_ms)
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if self.started and self.fade.is_finished then self.transitioned = true end
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end
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end
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function ArcadeBGFever:draw()
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local fade = self.transitioned and 1.0 or self.fade.attribute
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-- back to front, in the cabinet's own depth order: the static art is NOT
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-- all behind the strips (bg_fever_a_02's spinning tops sit in front of an
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-- opaque checker strip), so the order in the table is load-bearing.
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for _, l in ipairs(self.layers) do
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if l.period > 0 then
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local off = (self.elapsed / 1000.0) * l.vx
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off = off % l.period
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if off > 0 then off = off - l.period end
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for i = 0, l.n do
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tex.draw_texture(l.id, { x = off + i * l.period, fade = fade })
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end
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else
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tex.draw_texture(l.id, { fade = fade })
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end
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end
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end
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function ArcadeBGFever:destroy()
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tex.unload_folder(self.path, "bg_fever/" .. self.name)
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end
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local BGFever = {}
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BGFever.Base = ArcadeBGFever
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BGFever.Arcade = ArcadeBGFever
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function BGFever.create(index, path)
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return ArcadeBGFever.new(index, path)
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end
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return BGFever
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