feat: added new functionality with focus, added base background to screens, created Focus.close(), Focus.start(), Focus.driven() methods for different use-cases, added focus to screens

impostor.inc

@@ -7,6 +7,7 @@ init/init.context.lua
 system/system.util.lua
 system/system.print.lua
 system/system.input.lua
+system/system.focus.lua
 system/system.ui.lua
 audio/audio.manager.lua
 audio/audio.songs.lua

inc/decision/decision.play_button_mash.lua

@@ -1,5 +1,12 @@
 Decision.register({
   id = "play_button_mash",
   label = "Play Button Mash",
-  handle = function() Meter.hide() MinigameButtonMashWindow.start("game") end,
+  handle = function()
+    Meter.hide()
+    MinigameButtonMashWindow.start("game", {
+      focus_center_x = Config.screen.width / 2,
+      focus_center_y = Config.screen.height / 2,
+      focus_initial_radius = 0,
+    })
+  end,
 })

inc/decision/decision.play_rhythm.lua

@@ -1,5 +1,12 @@
 Decision.register({
   id = "play_rhythm",
   label = "Play Rhythm Game",
-  handle = function() Meter.hide() MinigameRhythmWindow.start("game") end,
+  handle = function()
+    Meter.hide()
+    MinigameRhythmWindow.start("game", {
+      focus_center_x = Config.screen.width / 2,
+      focus_center_y = Config.screen.height / 2,
+      focus_initial_radius = 0,
+    })
+  end,
 })

inc/init/init.minigame.lua

@@ -115,7 +115,10 @@ function Minigame.get_default_button_mash()
     bar_height = 12,
     button_x = 20,
     button_y = 110,
-    button_size = 12
+    button_size = 12,
+    focus_center_x = nil,
+    focus_center_y = nil,
+    focus_initial_radius = 0
   }
 end
 
@@ -167,7 +170,10 @@ function Minigame.get_default_rhythm()
     button_y = 110,
     button_size = 10,
     press_cooldown = 0,
-    press_cooldown_duration = 15
+    press_cooldown_duration = 15,
+    focus_center_x = nil,
+    focus_center_y = nil,
+    focus_initial_radius = 0
   }
 end
 

inc/init/init.module.lua

@@ -11,3 +11,4 @@ Print = {}
 Input = {}
 Sprite = {}
 Audio = {}
+Focus = {}

inc/screen/screen.office.lua

@@ -1,6 +1,7 @@
 Screen.register({
   id = "office",
   name = "Office",
+  background_color = Config.colors.dark_grey,
   decisions = {
     "play_button_mash",
     "play_rhythm",

inc/screen/screen.walking_to_home.lua

@@ -1,6 +1,7 @@
 Screen.register({
   id = "walking_to_home",
   name = "Walking to home",
+  background_color = Config.colors.dark_grey,
   decisions = {
     "go_to_home",
     "go_to_office",

inc/screen/screen.walking_to_office.lua

@@ -1,6 +1,7 @@
 Screen.register({
   id = "walking_to_office",
   name = "Walking to office",
+  background_color = Config.colors.dark_grey,
   decisions = {
     "go_to_home",
     "go_to_office",

inc/system/system.focus.lua

@@ -0,0 +1,166 @@
+--- @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 center_x number The x-coordinate of the circle center.
+--- @param center_y 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 center_x number The x-coordinate of the circle center.
+--- @param center_y 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 center_x number The x-coordinate of the circle center.
+--- @param center_y 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/window/window.game.lua

@@ -6,17 +6,23 @@ local _selected_decision_index = 1
 --- @within GameWindow
 function GameWindow.draw()
   local screen = Screen.get_by_id(Context.game.current_screen)
-  if screen.background then Map.draw(screen.background) end
+  if screen.background then
+    Map.draw(screen.background)
+  elseif screen.background_color then
+    rect(0, 0, Config.screen.width, Config.screen.height, screen.background_color)
+  end
   UI.draw_top_bar(screen.name)
   if #_available_decisions > 0 then
     UI.draw_decision_selector(_available_decisions, _selected_decision_index)
   end
   Sprite.draw()
+  Focus.draw()
 end
 
 --- Updates the game window logic.
 --- @within GameWindow
 function GameWindow.update()
+  Focus.update()
   if Input.menu_back() then
     Window.set_current("menu")
     MenuWindow.refresh_menu_items()
@@ -60,6 +66,8 @@ function GameWindow.update()
       selected_decision.handle()
     end
   end
+
+
 end
 
 --- Sets the active window.

inc/window/window.minigame.mash.lua

@@ -13,7 +13,13 @@ end
 --- @param[opt] params table Optional parameters for minigame configuration.
 function MinigameButtonMashWindow.start(return_window, params)
   MinigameButtonMashWindow.init(params)
-  Context.minigame_button_mash.return_window = return_window or "game"
+  local mg = Context.minigame_button_mash
+  mg.return_window = return_window or "game"
+  if mg.focus_center_x then
+    Focus.start_driven(mg.focus_center_x, mg.focus_center_y, {
+      initial_radius = mg.focus_initial_radius
+    })
+  end
   Window.set_current("minigame_button_mash")
 end
 
@@ -31,6 +37,7 @@ function MinigameButtonMashWindow.update()
   if mg.bar_fill >= mg.max_fill then
     Meter.on_minigame_complete()
     Meter.show()
+    if mg.focus_center_x then Focus.stop() end
     Window.set_current(mg.return_window)
     return
   end
@@ -42,6 +49,9 @@ function MinigameButtonMashWindow.update()
   if mg.button_pressed_timer > 0 then
     mg.button_pressed_timer = mg.button_pressed_timer - 1
   end
+  if mg.focus_center_x then
+    Focus.set_percentage(mg.bar_fill / mg.max_fill)
+  end
 end
 
 --- Draws button mash minigame.
@@ -51,7 +61,9 @@ function MinigameButtonMashWindow.draw()
   if mg.return_window == "game" then
     GameWindow.draw()
   end
+  if not mg.focus_center_x then
     rect(0, 0, Config.screen.width, Config.screen.height, Config.colors.black)
+  end
   rect(mg.bar_x - 2, mg.bar_y - 2, mg.bar_width + 4, mg.bar_height + 4, Config.colors.light_grey)
   rectb(mg.bar_x - 2, mg.bar_y - 2, mg.bar_width + 4, mg.bar_height + 4, Config.colors.dark_grey)
   local fill_width = (mg.bar_fill / mg.max_fill) * mg.bar_width

inc/window/window.minigame.rhythm.lua

@@ -13,7 +13,13 @@ end
 --- @param[opt] params table Optional parameters for minigame configuration.
 function MinigameRhythmWindow.start(return_window, params)
   MinigameRhythmWindow.init(params)
-  Context.minigame_rhythm.return_window = return_window or "game"
+  local mg = Context.minigame_rhythm
+  mg.return_window = return_window or "game"
+  if mg.focus_center_x then
+    Focus.start_driven(mg.focus_center_x, mg.focus_center_y, {
+      initial_radius = mg.focus_initial_radius
+    })
+  end
   Window.set_current("minigame_rhythm")
 end
 
@@ -53,12 +59,16 @@ function MinigameRhythmWindow.update()
   if mg.score >= mg.max_score then
     Meter.on_minigame_complete()
     Meter.show()
+    if mg.focus_center_x then Focus.stop() end
     Window.set_current(mg.return_window)
     return
   end
   if mg.button_pressed_timer > 0 then
     mg.button_pressed_timer = mg.button_pressed_timer - 1
   end
+  if mg.focus_center_x then
+    Focus.set_percentage(1 - mg.score / mg.max_score)
+  end
 end
 
 --- Draws rhythm minigame.
@@ -68,7 +78,9 @@ function MinigameRhythmWindow.draw()
   if mg.return_window == "game" then
     GameWindow.draw()
   end
+  if not mg.focus_center_x then
     rect(0, 0, Config.screen.width, Config.screen.height, Config.colors.black)
+  end
   rect(mg.bar_x - 2, mg.bar_y - 2, mg.bar_width + 4, mg.bar_height + 4, Config.colors.light_grey)
   rectb(mg.bar_x - 2, mg.bar_y - 2, mg.bar_width + 4, mg.bar_height + 4, Config.colors.dark_grey)
   rect(mg.bar_x, mg.bar_y, mg.bar_width, mg.bar_height, Config.colors.dark_grey)