Dynamic Objects

The Drowning Countdown is an object in Sonic the Hedgehog, theoretically able to appear anywhere in the game where water is present, though only appearing in Labyrinth Zone, as well as Scrap Brain Zone Act 3. It appears to the player as air bubbles emanating from Sonic's mouth, and as countdown numbers when Sonic's air time is low.

File: _incObj/-- Drowning Countdown.asm

Changes from Sonic 1

• Word-length obPriority pointer due to the new Priority Manager.
• Word-Length obRespawnAddr added due to the S3K Object Manager.
• Uses Revision 01 wobble data.
• Object no longer takes effect if Debug Mode is active, and air time is reset.
• BUGFIX: Slight adjustments made to drown handling to fix notable drowning bugs.
• ELECTIVE MOD: This object no longer takes effect if a Bubble Shield is active, and air time is reset.

This object has a variety of subtypes, dictating whether this instance is a small bubble, medium-sized bubble, or drowning number. These will be documented in full detail later.

	x0	x1	x2	x3	x4	x5	x6	x7	x8	x9	xA	xB	xC	xD	xE	xF
0x	Render	Addr	Addr	Addr	Gfx	Gfx	Map	Map	Map	Map	XPos	XPos	XPos	XPos	YPos	YPos
1x	YPos	YPos	~	~	RespawnAddr	RespawnAddr	~	~	~	~	Priority	Priority	Frame	~	~	~
2x	ColType	~	~	DispWid	Routine	~	~	~	Subtype	~	~	~	RestartTime	RestartTime	~	~
3x	StartX	StartX	DisplayTime	BubbleType	ExtraBubbles	~	ExtraFlag	ExtraFlag	NumberTime	NumberTime	DelayTime	DelayTime	~	~	~	~

• Art Tiles: artnem/LZ Bubbles & Countdown.nem (116 tiles; Nemesis-compressed)
• Sprite Mappings: _maps/Bubbles.asm
• VRAM Location:
  • ArtTile_LZ_Bubbles ($304; Air Bubbles)
  • ArtTile_LZ_Sonic_Drowning ($440; Drown Numbers)

• Obj0A - Sonic 2
• Obj_AirCountdown - Sonic 3 & Knuckles