logic layer

inc/logic/logic.day.lua

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+local _day_increase_handlers = {}
+
+function Day.increase()
+    Context.day_count = Context.day_count + 1
+    for _, handler in ipairs(_day_increase_handlers) do
+        handler()
+    end
+end
+function Day.register_handler(handler)
+    table.insert(_day_increase_handlers, handler)
+end
+
+Day.register_handler(function()
+    local m = Context.meters
+    m.ism = math.max(0, m.ism - METER_DECAY_PER_DAY)
+    m.wpm = math.max(0, m.wpm - METER_DECAY_PER_DAY)
+    m.bm = math.max(0, m.bm - METER_DECAY_PER_DAY)
+end)

inc/logic/logic.focus.lua

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+--- @section Focus
+
+local FOCUS_DEFAULT_SPEED = 5
+
+local active = false
+local closing = false
+local driven = false
+local center_x = 0
+local center_y = 0
+local radius = 0
+local speed = FOCUS_DEFAULT_SPEED
+local on_complete = nil
+local driven_initial_r = 0
+local driven_max_r = 0
+
+local function max_radius(cx, cy)
+  local dx = math.max(cx, Config.screen.width - cx)
+  local dy = math.max(cy, Config.screen.height - cy)
+  return math.sqrt(dx * dx + dy * dy)
+end
+
+--- Starts a focus overlay that reveals content through an expanding circle.
+--- @within Focus
+--- @param cx number The x-coordinate of the circle center.
+--- @param cy number The y-coordinate of the circle center.
+--- @param[opt] params table Optional parameters: `speed` (number) expansion rate in pixels/frame, `initial_radius` (number) starting radius in pixels (default 0), `on_complete` (function) callback when overlay disperses.
+function Focus.start(cx, cy, params)
+  params = params or {}
+  active = true
+  closing = false
+  driven = false
+  center_x = cx
+  center_y = cy
+  radius = params.initial_radius or 0
+  speed = params.speed or FOCUS_DEFAULT_SPEED
+  on_complete = params.on_complete
+end
+
+--- Starts a closing focus overlay that hides content by shrinking the visible circle.
+--- @within Focus
+--- @param cx number The x-coordinate of the circle center.
+--- @param cy number The y-coordinate of the circle center.
+--- @param[opt] params table Optional parameters: `speed` (number) shrink rate in pixels/frame, `on_complete` (function) callback when screen is fully covered.
+function Focus.close(cx, cy, params)
+  params = params or {}
+  active = true
+  closing = true
+  driven = false
+  center_x = cx
+  center_y = cy
+  radius = max_radius(cx, cy)
+  speed = params.speed or FOCUS_DEFAULT_SPEED
+  on_complete = params.on_complete
+end
+
+--- Starts a driven focus overlay whose radius is controlled externally via Focus.set_percentage().
+--- The radius maps linearly from initial_radius (at 0%) to the screen corner distance (at 100%).
+--- @within Focus
+--- @param cx number The x-coordinate of the circle center.
+--- @param cy number The y-coordinate of the circle center.
+--- @param[opt] params table Optional parameters: `initial_radius` (number) radius at 0% (default 0).
+function Focus.start_driven(cx, cy, params)
+  params = params or {}
+  active = true
+  closing = false
+  driven = true
+  center_x = cx
+  center_y = cy
+  driven_initial_r = params.initial_radius or 0
+  driven_max_r = max_radius(cx, cy)
+  radius = driven_initial_r
+  on_complete = nil
+end
+
+--- Sets the visible radius as a percentage of the full screen extent.
+--- Only has effect when the overlay is in driven mode (started via Focus.start_driven).
+--- @within Focus
+--- @param pct number A value from 0 to 1 (0 = initial_radius, 1 = full screen).
+function Focus.set_percentage(pct)
+  if not driven then return end
+  radius = driven_initial_r + pct * (driven_max_r - driven_initial_r)
+end
+
+--- Checks whether the focus overlay is currently active.
+--- @within Focus
+--- @return boolean Whether the focus overlay is active.
+function Focus.is_active()
+  return active
+end
+
+--- Stops the focus overlay immediately.
+--- @within Focus
+function Focus.stop()
+  active = false
+  closing = false
+  driven = false
+  radius = 0
+  on_complete = nil
+end
+
+--- Updates the focus overlay animation. No-op in driven mode.
+--- @within Focus
+function Focus.update()
+  if not active then return end
+  if driven then return end
+
+  if closing then
+    radius = radius - speed
+    if radius <= 0 then
+      local cb = on_complete
+      Focus.stop()
+      if cb then cb() end
+    end
+  else
+    radius = radius + speed
+    if radius >= max_radius(center_x, center_y) then
+      local cb = on_complete
+      Focus.stop()
+      if cb then cb() end
+    end
+  end
+end
+
+--- Draws the focus overlay (black screen with circular cutout).
+--- Must be called after all other drawing to appear on top of every visual layer.
+--- @within Focus
+function Focus.draw()
+  if not active then return end
+
+  local cx = center_x
+  local cy = center_y
+  local r = radius
+  local w = Config.screen.width
+  local h = Config.screen.height
+  local color = Config.colors.black
+
+  if closing and r <= 0 then
+    rect(0, 0, w, h, color)
+    return
+  end
+
+  local top = math.max(0, math.floor(cy - r))
+  local bottom = math.min(h - 1, math.ceil(cy + r))
+
+  if top > 0 then
+    rect(0, 0, w, top, color)
+  end
+
+  if bottom < h - 1 then
+    rect(0, bottom + 1, w, h - bottom - 1, color)
+  end
+
+  for y = top, bottom do
+    local dy = y - cy
+    local half_w = math.sqrt(math.max(0, r * r - dy * dy))
+    local left = math.floor(cx - half_w)
+    local right = math.ceil(cx + half_w)
+
+    if left > 0 then
+      rect(0, y, left, 1, color)
+    end
+    if right < w then
+      rect(right, y, w - right, 1, color)
+    end
+  end
+end

inc/logic/logic.meter.lua

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+--- @section Meter
+local METER_MAX = 1000
+local METER_DEFAULT = 500
+local METER_GAIN_PER_CHORE = 100
+local METER_DECAY_PER_DAY = 20
+local COMBO_BASE_BONUS = 0.02
+local COMBO_MAX_BONUS = 0.16
+local COMBO_TIMEOUT_FRAMES = 600
+
+-- Internal meters for tracking game progress and player stats.
+Meter.COLOR_ISM = Config.colors.red
+Meter.COLOR_WPM = Config.colors.blue
+Meter.COLOR_BM = Config.colors.black
+Meter.COLOR_BG = Config.colors.meter_bg
+
+--- Gets initial meter values.
+--- @within Meter
+--- @return result table Initial meter values. </br>
+--- Fields: </br>
+--- * ism (number) Initial ISM meter value.<br/>
+--- * wpm (number) Initial WPM meter value.<br/>
+--- * bm (number) Initial BM meter value.<br/>
+--- * combo (number) Current combo count.<br/>
+--- * combo_timer (number) Frames since last combo action.<br/>
+--- * hidden (boolean) Whether meters are hidden.
+function Meter.get_initial()
+  return {
+    ism = METER_DEFAULT,
+    wpm = METER_DEFAULT,
+    bm = METER_DEFAULT,
+    combo = 0,
+    combo_timer = 0,
+    hidden = false,
+  }
+end
+
+--- Hides meters.
+--- @within Meter
+function Meter.hide()
+  if Context and Context.meters then Context.meters.hidden = true end
+end
+
+--- Shows meters.
+--- @within Meter
+function Meter.show()
+  if Context and Context.meters then Context.meters.hidden = false end
+end
+
+--- Gets max meter value.
+--- @within Meter
+--- @return number The maximum meter value.
+function Meter.get_max()
+  return METER_MAX
+end
+
+--- Sets the decay amount applied to all meters per day.
+--- @within Meter
+--- @param amount number Amount to subtract from each meter.
+function Meter.set_decay(amount)
+  METER_DECAY_PER_DAY = amount
+end
+
+--- Gets the meter decay as a percentage of the max meter value.
+--- @within Meter
+--- @return number The decay percentage per day.
+function Meter.get_decay_percentage()
+  return math.floor(METER_DECAY_PER_DAY / METER_MAX * 100)
+end
+
+--- Gets combo multiplier.
+--- @within Meter
+--- @return number The current combo multiplier.
+function Meter.get_combo_multiplier()
+  if not Context or not Context.meters then return 1 end
+  local combo = Context.meters.combo
+  if combo == 0 then return 1 end
+  return 1 + math.min(COMBO_MAX_BONUS, COMBO_BASE_BONUS * (2 ^ (combo - 1)))
+end
+
+--- Updates all meters.
+--- @within Meter
+function Meter.update()
+  if not Context or not Context.game_in_progress or not Context.meters then return end
+  local m = Context.meters
+  local in_minigame = string.find(Window.get_current_id(), "^minigame_") ~= nil
+  if not in_minigame then
+    if m.combo > 0 then
+      m.combo_timer = m.combo_timer + 1
+      if m.combo_timer >= COMBO_TIMEOUT_FRAMES then
+        m.combo = 0
+        m.combo_timer = 0
+      end
+    end
+  end
+end
+
+--- Adds amount to a meter.
+--- @within Meter
+--- @param key string The meter key (e.g., "wpm", "ism", "bm").
+--- @param amount number The amount to add.
+function Meter.add(key, amount)
+  if not Context or not Context.meters then return end
+  local m = Context.meters
+  if m[key] ~= nil then
+    m[key] = math.min(METER_MAX, m[key] + amount)
+  end
+end
+
+--- Called on minigame completion.
+--- @within Meter
+function Meter.on_minigame_complete()
+  local m = Context.meters
+  local gain = math.floor(METER_GAIN_PER_CHORE * Meter.get_combo_multiplier())
+  Meter.add("wpm", gain)
+  Meter.add("ism", gain)
+  Meter.add("bm", gain)
+  m.combo = m.combo + 1
+  m.combo_timer = 0
+end

inc/logic/logic.timer.lua

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+--- @section Timer
+
+local timer_duration = 1800
+
+--- Gets initial timer values.
+--- @within Timer
+--- @return result table Initial timer values. </br>
+--- Fields: </br>
+--- * progress (number) Clock timer revolution progress (0 to 1).
+function Timer.get_initial()
+  return {
+    progress = 0,
+  }
+end
+
+--- Sets the number of frames for one full timer revolution.
+--- @within Timer
+--- @param frames number Frames per revolution.
+function Timer.set_duration(frames)
+  timer_duration = frames
+end
+
+--- Updates the timer and handles revolution events.
+--- @within Timer
+function Timer.update()
+  if not Context or not Context.game_in_progress or not Context.meters or not Context.timer then return end
+  local t = Context.timer
+  local in_minigame = string.find(Window.get_current_id(), "^minigame_") ~= nil
+
+  if not in_minigame then
+    t.progress = t.progress + (1 / timer_duration)
+    if t.progress >= 1 then
+      Day.increase()
+      t.progress = t.progress - 1
+    end
+  end
+end
+
+--- Draws the clock timer indicator as a circular progress bar.
+--- @within Timer
+function Timer.draw()
+  if not Context or not Context.game_in_progress or not Context.meters or not Context.timer then return end
+  if Context.meters.hidden and not Context.stat_screen_active then return end
+
+  local cx = 10
+  local cy = 20
+  local r_outer = 5
+  local r_inner = 3
+  local progress = Context.timer.progress
+
+  local fg_color
+  if progress <= 0.25 then
+    fg_color = Config.colors.white
+  elseif progress <= 0.5 then
+    fg_color = Config.colors.light_blue
+  elseif progress <= 0.75 then
+    fg_color = Config.colors.blue
+  elseif progress <= 1 then
+    fg_color = Config.colors.red
+  end
+
+  local bg_color = Config.colors.dark_grey
+  local start_angle = -math.pi * 0.5
+  local progress_angle = progress * 2 * math.pi
+  local r_outer_sq = r_outer * r_outer
+  local r_inner_sq = r_inner * r_inner
+
+  for dy = -r_outer, r_outer do
+    for dx = -r_outer, r_outer do
+      local dist_sq = dx * dx + dy * dy
+      if dist_sq <= r_outer_sq and dist_sq > r_inner_sq then
+        local angle = math.atan(dy, dx)
+        local relative = angle - start_angle
+        if relative < 0 then relative = relative + 2 * math.pi end
+        if relative <= progress_angle then
+          pix(cx + dx, cy + dy, fg_color)
+        else
+          pix(cx + dx, cy + dy, bg_color)
+        end
+      end
+    end
+  end
+
+  local hand_angle = start_angle + progress_angle
+  local hand_x = math.floor(cx + math.cos(hand_angle) * (r_inner - 1) + 0.5)
+  local hand_y = math.floor(cy + math.sin(hand_angle) * (r_inner - 1) + 0.5)
+  line(cx, cy, hand_x, hand_y, Config.colors.white)
+end