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→CGameCtnChallenge (03 043 000): add 0x040 item chunk TM2020 snapping documentation
''Note:'' This chunk has its own lookback string state (is encapsulated with CSystemArchiveEncapsuledChunk).
''Note:'' This chunk has its own lookback string state (is encapsulated with CSystemArchiveEncapsuledChunk).
''Note:'' Version 5+ can have data that is based on the count of certain types of items in the item array. If you want to modify items in TM2020, you can come across issues when modifying the item array. This can be fixed by downgrading the version to 4. This downgrade shouldn't break anything, except maybe some new TM2020 features of items.
''Note:'' Version 5+ can have data that is based on the count of certain types of items in the item array. If you want to modify items in TM2020, you can come across issues when modifying the item array and it becomes rather difficult. This can be resolved by downgrading the version to 4. This downgrade should only affect item snapping - which is useful only when deleting items in the map editor.
''Note:'' Version 5+ was guessed by bruteforce, there's a chance something could be inaccurate.
''Note:'' Version 5+ was guessed by bruteforce, there's a chance something could be inaccurate.
* '''snappedBlocks''': ''Values'' are ''indexes'' of the Blocks array (chunk 0x01F). -1 = snapped to an item and you should use the index of snappedItems.
* '''snappedItems''': ''Values'' are ''indexes'' of the AnchoredObjects array (this chunk). -1 = snapped to a block and you should use the index of snappedBlocks.
* '''snapItemGroups''': Separates item "deletion groups" via a simple number. Usual values are between 0 and 5. You can index these with itemSnapIndexes values.
* '''itemSnapIndexes''': Uses the values above to connect them with the item list. ''Values'' are ''indexes'' of '''snappedBlocks'''/'''snappedItems''' arrays. Any index of this array corresponds to the same AnchoredObjects index, '''except -1''', which means the item is not snapped.
uint32 version
uint32 version
uint32 size
uint32 size
uint2[size] // 2 uint32 per element
uint2[size] // 2 uint32 per element
if version >= 5:
if version >= 5: // TM2020
if version < 6:
if version < 6:
uint32
uint32
uint32 size1
uint32 snappedBlockCount
uint32[size1]
uint32 snappedBlocks[snappedBlockCount]
uint32 size2
uint32 snappedItemCount
uint32[size2]
uint32 snappedItems[snappedItemCount]
if version >= 6:
if version >= 6:
uint32 size3
uint32 snapItemGroupCount
uint32[size3]
uint32 snapItemGroups[snapItemGroupCount]
uint32 size4
uint32 size
uint32[size4]
uint32[size] // unknown atm
if version >= 7:
if version >= 7:
uint32 size5
uint32 itemSnapIndexCount // should be the same as the item count itself
uint32[size5]
uint32 itemSnapIndexes[itemSnapIndexCount]
'''03043044''' (skippable)
'''03043044''' (skippable)