Game Play Struct

game_play
Version	VRam
Debug	`80212020`	`80224538`
NTSC 1.0	`801C84A0`	`801DA9B8`
NTSC 1.1	`801C8660`	`801DAB78`
NTSC 1.2	`801C8D60`	`801DB278`
PAL 1.0	`801C64E0`	`801D89F8`
PAL 1.1	`801C6520`	`801D8A38`

The game_play struct is a Game State containing a large chunk of the core game engine's variables. Historically, the instance of game_play was referred to as the Global Context, because it is dynamically allocated to a consistent address and many functions pass around either a reference to the game_play struct, or it's inner game struct.

Addresses

Offset		Size	Identification	Type	RAM
Start	End	Size	Identification	Type	NTSC 1.0	NTSC 1.1	NTSC 1.2	PAL 1.0	PAL 1.1	N64DD	Debug
0000	12518	12518	game_play	struct	801C84A0					801E8E50	80212020
0000	00A4	A4	Game Struct	struct	801C84A0					801E8E50	80212020
01E0			Camera Context	struct	801C8680					801E9030	80212200
1D64			Cutscene Context	struct	801CA204					801EABB4	80213D84
103D0	104F0	120	Text Box Context	struct	801D8870					801F9220	802223F0
104F0	10760	270	Interface Context	struct	801D8990					801F9340	80222510
10760			Subscreen Context	struct	801D8C00					801F95B0	80222780
10B20			Link Animation Context	struct	801D8FC0					801F9970	80222B40
117A4	11CB8	514	Object Context	struct	801D9C44					801FA5F4	802237C4
11CBC			Room Context	struct	801DA15C					801FAB0C	80223CDC
11D30			Transition Actor Context	struct	801DA1D0					801FAB80	80223D50
11E60			Simple Body Collision Group AT 1	struct	801DA300					801FACB0	80223E80
11F2C			Simple Body Collision Group AC 2	struct	801DA3CC					801FAD7C	80223F4C
12020			Simple Body Collision Group OT 3	struct	801DA4C0					801FAE70	80224040
12124			Buffer Context	struct	801DA5C4					801FAF74	80224144

Offset	Type	Debug	NTSC 1.0	NTSC 1.1	NTSC 1.2	PAL 1.0	PAL 1.1	Description
000000	struct	80212020	801C84A0	801C8660	801C8D60	801C64E0	801C6520	Game Struct
0000A4	(u16)	802120C4	801C8544	801C8704	801C8E04	801C6584	801C65C4	Current scene number
0000C0	(u32)	802120E0	801C8560	801C8720	801C8E20	801C65A0	801C65E0	screen top
0000C4	(u32)	802120E4	801C8564	801C8724	801C8E24	801C65A4	801C65E4	screen bottom
0000C8	(u32)	802120E8	801C8568	801C8728	801C8E28	801C65A8	801C65E8	screen left
0000CC	(u32)	802120EC	801C856C	801C872C	801C8E2C	801C65AC	801C65EC	screen right
0000D0	(f32)	802120F0	801C8570	801C8730	801C8E30	801C65B0	801C65F0	camera distance
0000D4	(f32)	802120F4	801C8574	801C8734	801C8E34	801C65B4	801C65F4	fog distance
0000D8	(f32)	802120F8	801C8578	801C8738	801C8E38	801C65B8	801C65F8	z distance
0000DC	(f32)	802120FC	801C857C	801C873C	801C8E3C	801C65BC	801C65FC	unknown camera variable - leave at 1.0
000270	(actor*)	80212290	801C8710	801C88D0	801C8FD0	801C6750	801C6790	Actor that camera follows
001C2C	u8	80213C4C	801CA0CC	801CA28C	801CA98C	801C810C	801C814C	Number of actors loaded
001C30	(actor*)[12][2]	80213C50	801CA0D0	801CA290	801CA990	801C8110	801C8150	List of actors by type. First word is number of actors of that type, second word points to the first of that type.
001CC8	(actor*)	80213CE8	801CA168	801CA328	801CAA28	801C81A8	801C81E8	What actor the z-target arrow is over
001CCC	(actor*)	80213CEC	801CA16C	801CA32C	801CAA2C	801C81AC	801C81EC	What actor is being z-targeted
001D28	u32	80213D48	801CA1C8	801CA388	801CAA88	801C8208	801C8248	Switch Flags
001D2C	u32	80213D4C	801CA1CC	801CA38C	801CAA8C	801C820C	801C824C	Temporary Switch Flags
001D38	u32	80213D58	801CA1D8	801CA398	801CAA98	801C8218	801C8258	Chest Flags
001D3C	u32	80213D5C	801CA1DC	801CA39C	801CAA9C	801C821C	801C825C	Room Clear Flags
001D4C	u32	80213D6C	801CA1EC	801CA3AC	801CAAAC	801C822C	801C826C	Pointer to Title Card texture
001D56	u8	80213D76	801CA1F6	801CA3B6	801CAAB6	801C8236	801C8276	Title Card Related
001D57	u8	80213D77	801CA1F7	801CA3B7	801CAAB7	801C8237	801C8277	Delay to display title card graphic
001D68	u32	80213D88	801CA208	801CA3C8	801CAAC8	801C8248	801C8288	Cutscene pointer
0117A4	(?)	802237C4	801D9C44	801D9E04	801DA504	801D7C84	801D7CC4	Argument 0 for SpawnObject() (this address, not value at this address)
011CBC	(u8)	80223CDC	801DA15C	801DA31C	801DAA1C	801D819C	801D81DC	Current Room Number
011CC8	(void*)	80223CE8	801DA168	801DA328	801DAA28	801D81A8	801D81E8	Current Room Pointer
011DE4	u32	80223E04	801DA284	801DA444	801DAB44	801D82C4	801D8304	Number of frames rendered while in normal gameplay (not paused or on file select)
011DE8	u8	80223E08	801DA288	801DA448	801DAB48	801D82C8	801D8308	Sets which Link to load on scene load (0 = adult, 1 = child)
011DEA	(u8)	80223E0A	801DA28A	801DA44A	801DAB4A	801D82CA	801D830A	Spawn Index for the current scene setup
011DEB	(u8)	80223E0B	801DA28B	801DA44B	801DAB4B	801D82CB	801D830B	Number of map actors (nulled after actors are spawned iirc)
011DEC	u32	80223E0C	801DA28C	801DA44C	801DAB4C	801D82CC	801D830C	Number of rooms in the current scene
011DF8	(actor_list*)[]	80223E18	801DA298	801DA458	801DAB58	801D82D8	801D8318	Pointer to map actor list with position/rotation of stuff.
011E04	u32	80223E24	801DA2A4	801DA464	801DAB64	801D82E4	801D8324	Pointer to current scene's exit list
011E1A	u16	80223E3A	801DA2BA	801DA47A	801DAB7A	801D82FA	801D833A	Next entrance index

Text

002223F0 XXXX - Tells you the number of the message that is displayed on the screen. It is used for the "MESSAGE = XXXX" feature in the Debug ROM. (code to activate this debug feature is: 81211CE4 0001)

002223F4 00XX - Message box selection The values are as follows:

00-Normal
01-Beta(Code: Beta message box always ON - 812223F4 0001)
02-Normal
04-Beta Musicbox (Code: 812223F4 0004)

00222400 - The actual message text. This can be changed as you please and will appear the way you've modified it.

002224DA 00XX - The transparency of the text that is shown

002224DC XX000000YY - How long the MESSAGE box will stay up before disappearing. XX is how long it should stay up, and YY is just a counter that'll remove the MESSAGE box when it's counted down to 00.

Variables: 00-FE: Will make it count down from the value you provide.

  FF: Will make the MESSAGE box permanent until you press A.

002224FA 00RR00GG00BB000000AA - Color and transparency of the MESSAGE box