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scawful 6ba634caa4 Add comprehensive documentation for sprites and systems

- Introduced detailed analysis for the Minecart system, highlighting its state machine, track system, and areas for improvement.
- Created an NPCs analysis document, summarizing various NPC sprites and their functionalities.
- Added an Objects analysis document, covering interactive elements like collectibles, ice blocks, and minecarts.
- Documented the Overlord sprite system, detailing its role in spawning other sprites and managing events.
- Compiled a Dungeons & Indoor Areas document, outlining custom room tags, enhanced mechanics, and advanced collision systems.
- Developed an Overworld Systems Analysis, focusing on the ZSCustomOverworld architecture and its core features.
- Added a Time System document, explaining the in-game clock and day/night cycle management.
- Documented the ZScream Custom Overworld, detailing its data-driven approach and key features.

2025-10-02 12:44:30 -04:00

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Memory Map

This document provides a detailed map of the WRAM and SRAM memory regions, serving as a central reference for understanding the game's state.

1. WRAM (Work RAM) - `$7E0000`

This section details the layout of the game's volatile memory.

Key Vanilla WRAM Variables

This section contains a table listing critical vanilla WRAM addresses, their labels (from Core/ram.asm and Core/symbols.asm), and their purpose.

Address	Label	Description
`$7E0010`	`MODE`	The main game state/module index.
`$7E0011`	`SUBMODE`	The sub-state for the current game mode.
`$7E001A`	`FRAME`	A counter that increments each non-lagging frame.
`$7E001B`	`INDOORS`	A flag indicating if Link is indoors (0x01) or outdoors (0x00).
`$7E002F`	`DIR`	The direction Link is facing (0=U, 2=D, 4=L, 6=R).
`$7E005D`	`LINKDO`	Link's personal state machine ID (walking, swimming, etc.).
`$7E008A`	`OWSCR`	The current Overworld screen ID.
`$7E00A0`	`ROOM`	The current Underworld room ID.
`$7E02E0`	`BUNNY`	A flag indicating if Link is in his bunny form (0x01).
`$7E031F`	`IFRAMES`	Link's invincibility frame timer after taking damage.
`$7E0DD0`	`SprState`	An array storing the state for each of the 16 sprites.
`$7E0E20`	`SprType`	An array storing the ID for each of the 16 sprites.
`$7E0E50`	`SprHealth`	An array storing the health for each of the 16 sprites.

Custom WRAM Region - `$7E0730+`

This section details the custom WRAM area defined in Core/ram.asm and Core/symbols.asm. It explains the purpose of each custom variable.

Address	Label	Description
`$7E0730`	`MenuScrollLevelV`	Vertical scroll position for the menu.
`$7E0731`	`MenuScrollLevelH`	Horizontal scroll position for the menu.
`$7E0732`	`MenuScrollHDirection`	The direction of horizontal scrolling in the menu.
`$7E0734`	`MenuItemValueSpoof`	Used to temporarily override the displayed value of a menu item.
`$7E0736`	`ShortSpoof`	A shorter version of the spoof value.
`$7E0737`	`MusicNoteValue`	The value of the current music note being played.
`$7E0739`	`GoldstarOrHookshot`	Differentiates between the vanilla Hookshot and the custom Goldstar item.
`$7E073A`	`Neck_Index`	Used for multi-part sprites, like a centipede body.
`$7E0745`	`FishingOrPortalRod`	Differentiates between the Fishing Rod and the Portal Rod.

2. SRAM (Save RAM) - `$7EF000`

This section details the layout of the save file memory.

Key Vanilla SRAM Variables

This section lists key vanilla save data locations, such as inventory, health, and progression flags, as defined in Core/sram.asm.

Address	Label	Description
`$7EF340`	`Bow`	The player's current bow type (0x00-0x04).
`$7EF343`	`Bombs`	The number of bombs the player has.
`$7EF359`	`Sword`	The player's current sword type (0x00-0x04).
`$7EF35A`	`Shield`	The player's current shield type (0x00-0x03).
`$7EF360`	`Rupees`	The player's current rupee count.
`$7EF36C`	`MAXHP`	The player's maximum health (1 heart = 8 HP).
`$7EF36D`	`CURHP`	The player's current health.
`$7EF374`	`Pendants`	A bitfield for the collected pendants (Courage, Power, Wisdom).
`$7EF37A`	`Crystals`	A bitfield for the collected crystals from Dark World dungeons.
`$7EF3C5`	`GameState`	The main progression state of the game.

Custom SRAM Region

This is a critical section. It provides a comprehensive breakdown of all custom variables added to the SRAM, explaining what each flag or value represents. This information is primarily found in Core/sram.asm.

Address	Label	Description
`$7EF3D6`	`OOSPROG`	A primary bitfield for major quest milestones unique to Oracle of Secrets.
`$7EF3C6`	`OOSPROG2`	A secondary bitfield for less critical progression flags.
`$7EF3D4`	`MakuTreeQuest`	A flag indicating if the Maku Tree has met Link.
`$7EF3C7`	`MapIcon`	Controls the position of the guiding 'X' on the world map.
`$7EF351`	`CustomRods`	A flag to differentiate between the Fishing Rod (1) and Portal Rod (2).
`$7EF38A`	`FishingRod`	Flag indicating if the player has the Fishing Rod.
`$7EF38B`	`Bananas`	The number of bananas collected for a side-quest.
`$7EF391`	`Seashells`	The number of secret seashells collected.
`$7EF398`	`Scrolls`	A bitfield tracking which of the lore scrolls have been found.
`$7EF39B`	`MagicBeanProg`	Tracks the multi-day growth cycle of the magic bean side-quest.
`$7EF39C`	`JournalState`	The current state of the player's journal.
`$7EF39D`	`SRAM_StormsActive`	A flag indicating if the Song of Storms effect is active.
`$7EF410`	`Dreams`	A bitfield tracking the collection of the three "Dreams" (Courage, Power, Wisdom).
`$7EF347`	`ZoraMask`	Flag indicating if the player has obtained the Zora Mask.
`$7EF348`	`BunnyHood`	Flag indicating if the player has obtained the Bunny Hood.
`$7EF349`	`DekuMask`	Flag indicating if the player has obtained the Deku Mask.
`$7EF34D`	`RocsFeather`	Flag indicating if the player has obtained Roc's Feather.
`$7EF352`	`StoneMask`	Flag indicating if the player has obtained the Stone Mask.
`$7EF358`	`WolfMask`	Flag indicating if the player has obtained the Wolf Mask.

6.7 KiB Raw Blame History