Meta Header

Researched by SuperSaiyajinStackZ, Version: 0.1.0.

Some notes

The exact size of the Header is unknown yet. It seems like the Checksum contains the range from 0x0 up to 0x18 though.
The Checksum of the “Meta Header” is stored at 0xE - 0xF inside the Savefile.
The first 0x7 bytes is a identifier for the Savefile, so the game can ensure the Savefile is actually valid. The ST could likely mean Sims, The from the game title, however WN024 is unknown yet.

Structure

You can find a C++ structure for the Meta Header below.

struct MetaHeader {
	enum class SFXVolumes : uint8_t {
		Vol0 = 0x0, Vol1 = 0xC, Vol2 = 0x18, Vol3 = 0x24, Vol4 = 0x30, Vol5 = 0x3C, Vol6 = 0x48,
		Vol7 = 0x54, Vol8 = 0x60, Vol9 = 0x6C, Vol10 = 0x80
	};

	enum class MUSVolumes : uint8_t {
		Vol0 = 0x0, Vol1 = 0x19, Vol2 = 0x32, Vol3 = 0x4B, Vol4 = 0x64, Vol5 = 0x7D, Vol6 = 0x96,
		Vol7 = 0xAF, Vol8 = 0xC8, Vol9 = 0xE1, Vol10 = 0xFF
	};

	enum class Languages : uint8_t {
		English = 0x0, Dutch = 0x1, French = 0x2, German = 0x3, Italian = 0x4, Spanish = 0x5
	};

	uint8_t Identifier[0x7] = { 0x53, 0x54, 0x57, 0x4E, 0x30, 0x32, 0x34 }; // The identifier the game uses, to validate the Savefile, which is "STWN024"; 0x0 - 0x6.
	uint8_t Unknown1 = 0x0; // Unknown; 0x7.
	SFXVolumes SoundEffectVolume = SFXVolumes::Vol0; // The Sound Effect Volume Level; 0x8.
	MUSVolumes MusicVolume = MUSVolumes::Vol0; // The Music Volume Level; 0x9.
	Languages Language = Languages::English; // The Language the game uses; 0xA.
	uint8_t Unknown2[0x3] = { 0x0 }; // Unknown; 0xB - 0xD.
	uint16_t Checksum = 0x0; // The Meta Header Checksum; 0xE - 0xF.

	uint8_t BigfootLovesChickens : 4; // Bigfoot Loves Chickens Minigame Level; 0x10.
	uint8_t CarCommercials : 4; // Car Commercial Minigame Level; 0x10.
	uint8_t KeelhaulinCards : 4; // Keelhaulin' Cards Minigame Level; 0x11.
	uint8_t CattleCleanup : 4; // Cattle Cleanup Minigame Level; 0x11.
	uint8_t KingChugChug : 4; // King Chug-Chug Minigame Level; 0x12.
	uint8_t CanyonJumping : 4; // Canyon Jumping Minigame Level; 0x12.
	uint8_t ChopShop : 4; // Chop Shop Minigame Level; 0x13.
	
	uint8_t Unknown3 : 4; // Unknown; 0x13.
	uint8_t Unknown4[0x4] = { 0x0 }; // Unknown; 0x14 - 0x18.
};

Sound Effect Volumes

The Meta Header at offset 0x8 stores the Sound Effect Volume.

The volumes are not stored like 0x0, 0x1, 0x2 etc, they are directly stored as their percentage or so. See below for the Levels and their actual value.

Level	Value
0	0x0
1	0xC
2	0x18
3	0x24
4	0x30
5	0x3C
6	0x48
7	0x54
8	0x60
9	0x6C
10	0x80

Music Volumes

The Meta Header at offset 0x9 stores the Music Volume.

The volumes are not stored like 0x0, 0x1, 0x2 etc, they are directly stored as their percentage or so. See below for the Levels and their actual value.

Level	Value
0	0x0
1	0x19
2	0x32
3	0x4B
4	0x64
5	0x7D
6	0x96
7	0xAF
8	0xC8
9	0xE1
10	0xFF

Languages

The Meta Header at offset 0xA stores the active language.

If the language index is 0x6 or larger, the game won’t display any text and eventually crash, so be warned. See below for the Language Indexes.

Language	Index
English	0x0
Dutch	0x1
French	0x2
German	0x3
Italian	0x4
Spanish	0x5

Minigames

The Minigames are stored as 4 bits. So 4 bits per minigame starting at 0x10 with Bigfoot Loves Chickens.

The range for valid Levels are: 0x0 - 0x5. Use 0x0 if you don’t want the Minigames stored inside the Minigames menu, or 0x1 - 0x5 if you want them there.

See below for a list for which offset and bits is for which Minigame.

Minigame	Offset	Bits
Bigfoot Loves Chickens	0x10	First 4
Car Commercials	0x10	Last 4
Keelhaulin’ Cards	0x11	First 4
Cattle Cleanup	0x11	Last 4
King Chug-Chug	0x12	First 4
Canyon Jumping	0x12	Last 4
Chop Shop	0x13	First 4