FloofyPlasma: Protected "Inventory Format": Advanced technical content ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

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Protected "Inventory Format": Advanced technical content ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

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The Blockheads uses an interesting method to store Blockhead inventories. The inventories are encoded into a binary property list (plist) format, with each item represented by a specific struct in Objective-C++. This encoding process involves compressing the plist using zlib with a maximum window size (wbits) of 16. This page provides insights into the structure of Blockhead inventories and the tools available to parse and interpret them.

== ItemSaveData Struct ==
The foundation of the inventory structure lies in the <code>ItemSaveData</code> struct, which is implemented in Objective-C++. This struct defines the properties associated with each item in the inventory.
@interface ItemSaveData : NSObject

@property (nonatomic, assign) uint16_t itemType;
@property (nonatomic, assign) uint16_t dataA;
@property (nonatomic, assign) uint16_t dataB;
@property (nonatomic, assign) uint8_t selectedSubItemIndex;
@property (nonatomic, assign) uint8_t padding;

@end

* <code>itemType</code>: Represents the type of item.
* <code>dataA</code> and <code>dataB</code>: Additional data associated with the item.
* <code>selectedSubItemIndex</code>: Index of the selected sub-item.
* <code>padding</code>: Additional padding for data alignment.

== Encoding Process ==

# The <code>ItemSaveData</code> structs are populated with item information.
# These structs are then serialized into a binary plist.
# The binary plist is compressed using zlib with a max wbits of 16.

== Sample Mac Server Inventory ==
A sample inventory in its binary form, extracted using Python:
b'\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\x13K*\xc8\xc9,.10X\xc1\xc8\xcc\xca\xcd\xcb\xc7/\xb0\x90\xc9\x83\x91\x01\x02\x16\xb2x\x0800\xb0\x82\x98K\xd9\xd898\xb9<l\x18\xea\x81\x90\xc1\x81\x18\xc6B\x1e\x0f\x1e\x889\x0e\x0b\x80\x80CPXFN]\xd7\xcc\xde#0*&5-=\x03"\xc7\x08\xb3L\x90\x01\x15d\x02\x00\xea$B\x0e\x9a\x00\x00\x00'

== Parsing Tool Output ==
A [[Inventory Parsing Tool|tool]] has been developed to parse and interpret the inventory information. The output of the tool, based on the provided binary string, is as follows:
Item 1:
Item Type: 1 (Clothing Slot)
Data A: 0
Data B: 0
Selected Sub-Item Index: b'\x00'
Padding: b'\x00'

Item 2:
Item Type: 16 (Flint Spade)
Data A: 1280
Data B: 0
Selected Sub-Item Index: b'\x00'
Padding: b'\x00'

Item 3:
Item Type: 60 (Orange)
Data A: 127
Data B: 127
Selected Sub-Item Index: b'\x00'
Padding: b'@'

Item 4:
Item Type: 12 (Basket)
Data A: 0
Data B: 0
Selected Sub-Item Index: b'\x00'
Padding: b'@'

Item 5:
This is an empty slot.

Item 6:
This is an empty slot.

Item 7:
This is an empty slot.

Item 8:
This is an empty slot.

Inventory Format - Revision history

FloofyPlasma: Protected "Inventory Format": Advanced technical content ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

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