credits.swf

A scrolling credits roll dialog shown in Trove when the player views the game credits. It displays HTML-formatted credits text that auto-scrolls upward at a fixed speed, ending with a callback to the game engine. On console builds a close button (B button icon) is also shown.

Document/main class: Credits (extends _kiwi.Core.UIComponent) — no top-level embed; dialog content is via Credits_fla.Dialog_1 (embeds symbol33 from /_assets/assets.swf)
SWF-specific classes: 12

Main class: Credits

Credits is the root UIComponent for the credits screen. Its constructor wires up the close button and, when running inside the Iggy runtime, registers an OnRequestClose ExternalInterface callback. On non-console platforms the iconClose (Xbox B-button glyph) is hidden. Data arrives via the text setter — once set it triggers a full redraw and starts the scroll animation. The engine writes text as a property (it is in no addCallback list), passing the whole of Credits.txt: the file named by $Credits_Filename ("Credits.txt"), which sits in the game's install root rather than under ui/. The string keeps the file's byte-order mark as a leading U+FEFF.

Key fields

  • dialog : MovieClip — public reference to the Dialog_1 timeline symbol; contains the header, close button, mainContent (scroll area), and iconClose.
  • ScrollSpeed : Number = 70 — pixels per second the credits text scrolls upward (constant).
  • scrolling : Boolean — unused in the current code; scroll state is inferred from listener presence.
  • lastFrameTime : int — timestamp captured each ENTER_FRAME tick via getTimer() for delta-time scroll calculation.
  • _text : String — the raw HTML credits string received from the engine.

Frame scripts / timeline

Credits_fla.Dialog_1 installs frame scripts via addFrameScript indirectly through BtnGreen (frames 9, 19, 29, 39 — all call stop()), corresponding to the four button states (up, over, down, disabled) of the green close button.

Runtime dependencies & integration

  • IggyFunctions.inIggy — checked in constructor; if true, ExternalInterface.addCallback("OnRequestClose", onRequestClose) registers the close handler so the C++ game layer can trigger it.
  • ExternalInterface.call("OnRequestClose") — fired when the user clicks the close button (or the engine calls the callback). Signals the game to dismiss the credits screen.
  • ExternalInterface.call("OnCreditsRollFinished") — fired by onEnterFrame when the credits text has fully scrolled past the top boundary (creditsFinished() returns true). Notifies the game engine that the roll is complete.
  • Event.ENTER_FRAME — listener added in draw() when new text data arrives; drives per-frame delta-time scrolling; removed when roll finishes.
  • InvalidationType.DATA — standard Kiwi invalidation flag; triggers draw() override which resets scroll position, sets htmlText on the text field, auto-sizes it (textfield.height = textfield.textHeight), and restarts the enter-frame loop.
  • configUI() / setupTranslation() — configUI override calls the inherited setupTranslation() to apply localized string substitutions.
  • translate keys (set in Dialog_1 component properties):
    • $Credits_Header — window header title string.
    • $Close_ButtonLegend — label on the green close button.
  • IsConsole() — global function (not in this SWF's source; injected by runtime or framework) used to conditionally show/hide the iconClose console button glyph.

Other game-specific classes

  • Credits_fla.Dialog_1 — timeline symbol class (embeds symbol33 from /_assets/assets.swf); the main dialog shell containing a WindowHeader (__id0_, title $Credits_Header), a BtnGreen close button (label $Close_ButtonLegend), a btn_console_east icon (iconClose), and a mainContent MovieClip holding the scrolling textfield.
  • BtnGreen — (embeds symbol19 from /_assets/assets.swf) extends _kiwi.Controls.LabelButton; 40-frame button with 4 states (up/over/down/disabled), each halted by a stop() frame script. Used as the close button.
  • btn_console_east — bare MovieClip subclass; represents the console East-button (B) glyph shown on console builds next to the close button.
  • 8 embedded bitmap asset classes (pure BitmapData wrappers, no logic): trionteam2018 (1230×813 jpg), team_photo (800×400 jpg), bsgstudio (828×315 jpg), trionteam (980×702 jpg), grannylogo.png (2255×864 png), wwise_logo (679×204 png), iggylogo.jpg (1079×1379 jpg), binklogo.jpg (1500×1518 jpg), plus btn_XBOne_B.png (64×64 png). These are embedded image assets for display within the scrolling credits content area.

Notable logic

  • Delta-time scroll: onEnterFrame computes elapsed seconds as (getTimer() - lastFrameTime) / 1000 and subtracts ScrollSpeed * elapsed from the text field's Y position each frame, giving frame-rate-independent scrolling at 70 px/sec.
  • Scroll reset: resetCreditsRoll() positions textfield.y below the bottom of the bounds clip, so text starts off-screen and scrolls up into view.
  • Finish detection: creditsFinished() checks whether bounds.y > mainContent.textfield.y + mainContent.textfield.height — i.e., the bottom edge of the text has scrolled above the top of the visible area — then fires OnCreditsRollFinished and removes the enter-frame listener.
  • Disabled close during scroll: The close button starts disabled (closeButton.enabled = false) in the constructor and is only re-enabled once text is set (i.e., real content has arrived from the engine).
  • HTML content: Credits text is set via htmlText, allowing the game engine to pass rich-text HTML as the credits payload. Credits.txt uses exactly two tags: <font size="…"> for headings (sizes 22, 20 and 18) and <img src="…" width="…" height="…">, whose src is the class name of one of the embedded bitmaps — that is how the photographs and logos appear in the roll. Seven are referenced; bsgstudio is embedded but unused by the current file.