Havok - Revision history

Greenlord: Relative offsets tend to be relative to the provided absolute offset.

2021-10-28T11:15:09Z

Relative offsets tend to be relative to the provided absolute offset.

← Older revision		Revision as of 11:15, 28 October 2021
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	==Section Headers==		==Section Headers==
	[[File:Havok-class-header-delimits.png\|thumb\|<code>FF</code> bytes indicate section header boundaries]]		[[File:Havok-class-header-delimits.png\|thumb\|<code>FF</code> bytes indicate section header boundaries]]
	Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. All three section headers follow the file header and are delimited by 16 delimiter bytes (<code>0xFF</code>).		Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. These relative offsets are often relative to the absolute offset. {{check}} All three section headers follow the file header and are delimited by 16 delimiter bytes (<code>0xFF</code>).
	{\| class="wikitable"		{\| class="wikitable"
	\|+Section Header Specification		\|+Section Header Specification
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	\|EOF		\|EOF
	\|}		\|}


	==Class Names Section==		==Class Names Section==

imported>Kreny: Remove number after unknown

2020-01-18T09:46:50Z

Remove number after unknown

← Older revision		Revision as of 09:46, 18 January 2020
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	\|4		\|4
	\|Int		\|Int
	\|Unknown 18 (always 0; probably padding for alignment)		\|Unknown (always 0; probably padding for alignment)
	\|}		\|}

imported>Kreny: Fixed some typos

2020-01-14T08:53:54Z

Fixed some typos

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imported>Kreny: Specify some header entries, added known classes

2020-01-13T21:04:58Z

Specify some header entries, added known classes

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imported>HailToDodongo: fix typos

2019-02-19T22:04:49Z

fix typos

← Older revision		Revision as of 22:04, 19 February 2019
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	\|EOF		\|EOF
	\|}		\|}
	~~<br />~~

	== Class Names Section ==		== Class Names Section ==
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	All files follow a general structure as you can see in the picture.		All files follow a general structure as you can see in the picture.

	Right after the header begins the data section which contains multiple chunks, luckily, the four ~~first~~ chunks are always the same.		Right after the header begins the data section which contains multiple chunks, luckily, the first four chunks are always the same.

	After that, ~~the~~ several more chunks can be found depending on the file.		After that, several more chunks can be found depending on the file.

	=== Pointer ===		=== Pointer ===
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	However, since the first four classes are always the same, the first 14 offsets will be the constant.		However, since the first four classes are always the same, the first 14 offsets will be the constant.
	[[File:~~Havok data pointer~~.png\|none\|thumb\|Data Pointer]]		[[File:Havok_data_pointer.png\|none\|thumb\|Data Pointer]]
	~~<br />~~

	==== Linked Entries ====		==== Linked Entries ====
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	Then, the target pointer is the offset of the beginning of the target chunk.		Then, the target pointer is the offset of the beginning of the target chunk.
	[[File:~~Havok pointer linked~~.png\|none\|thumb\|Linked Entries]]		[[File:Havok_pointer_linked.png\|none\|thumb\|Linked Entries]]
	~~<br />~~

	==== Class Mapping ====		==== Class Mapping ====
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	The class pointer is set to the first character of the class name found in the header section.		The class pointer is set to the first character of the class name found in the header section.
	[[File:~~Havok class mapping~~.png\|none\|thumb\|Class Mapping]]		[[File:Havok_class_mapping.png\|none\|thumb\|Class Mapping]]


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	{{Expand section}}		{{Expand section}}
	All known class that chunks can used are listed here:		All known class that chunks can used are listed here:
	~~<br />~~
	<references />		<references />
	[[Category:File formats]]		[[Category:File formats]]

imported>HailToDodongo: Add description for data sections / pointer sections

2019-02-19T22:01:15Z

Add description for data sections / pointer sections

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imported>Zephenryus: /* Header */ Updated headings to be more consistent

2019-01-17T19:07:03Z

Header: Updated headings to be more consistent

← Older revision		Revision as of 19:07, 17 January 2019
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	the data section (<code>__data__</code> internally) contains binary data to be serialized into Havok data structures for use by the Havok engine.		the data section (<code>__data__</code> internally) contains binary data to be serialized into Havok data structures for use by the Havok engine.

	=== Header ===		== Header ==
	The header seems to have a 16-byte alignment and can be 64-bytes (short header) or 80-bytes (long header) in length, depending on if '''Unknown 13''' equals 0 (short header) or 16 (long header).		The header seems to have a 16-byte alignment and can be 64-bytes (short header) or 80-bytes (long header) in length, depending on if '''Unknown 13''' equals 0 (short header) or 16 (long header).
	{\| class="wikitable"		{\| class="wikitable"
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	\|}		\|}

	==== Optional Header Bytes ====		=== Optional Header Bytes ===
	There are optional header bytes for a long header. If Unknown 13 equals 16, an additional 16 bytes are added to the header for a total of 80 bytes.		There are optional header bytes for a long header. If Unknown 13 equals 16, an additional 16 bytes are added to the header for a total of 80 bytes.
	{\| class="wikitable"		{\| class="wikitable"
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	\|}		\|}

	=== Section Headers ===		== Section Headers ==
	[[File:Havok-class-header-delimits.png\|thumb\|<code>FF</code> bytes indicate section header boundaries]]		[[File:Havok-class-header-delimits.png\|thumb\|<code>FF</code> bytes indicate section header boundaries]]
	Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. All three section headers follow the file header and are delimited by 16 delimiter bytes (<code>0xFF</code>).		Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. All three section headers follow the file header and are delimited by 16 delimiter bytes (<code>0xFF</code>).
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	\|}		\|}

	==== Section Name ====		=== Section Name ===
	There are only three section names: <code>__classnames__</code>, <code>__types__</code> and <code>__data__</code>. The section name is a null-terminated string with a delimiter byte (<code>0xFF</code>) in byte 20.		There are only three section names: <code>__classnames__</code>, <code>__types__</code> and <code>__data__</code>. The section name is a null-terminated string with a delimiter byte (<code>0xFF</code>) in byte 20.

	==== Absolute Offset ====		=== Absolute Offset ===
	The absolute offset to the section.		The absolute offset to the section.

	==== Relative Offsets ====		=== Relative Offsets ===
	The relative offsets point to different large structures within the section. There are usually a few unique offsets and then multiple duplicated offsets. It is unknown if only unique offsets are significant at this time.		The relative offsets point to different large structures within the section. There are usually a few unique offsets and then multiple duplicated offsets. It is unknown if only unique offsets are significant at this time.

imported>Zephenryus: /* Usage */ Italicized Breath of the Wild

2019-01-17T19:04:55Z

Usage: Italicized Breath of the Wild

← Older revision		Revision as of 19:04, 17 January 2019
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	== Usage ==		== Usage ==
	{{Expand section}}		{{Expand section}}
	Breath of the Wild uses the '''Havok Physics''', '''Havok AI''' and '''Havok Cloth'''.		''Breath of the Wild'' uses the '''Havok Physics''', '''Havok AI''' and '''Havok Cloth'''.
	{\| class="wikitable"		{\| class="wikitable"
	\|+File Extensions		\|+File Extensions

imported>Zephenryus: /* Havok File Specification */ Added section descriptions

2019-01-17T18:50:30Z

Havok File Specification: Added section descriptions

@@ Line 223: / Line 223: @@
 === Section Headers ===
 [[File:Havok-class-header-delimits.png|thumb|<code>FF</code> bytes indicate section header boundaries]]
-Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. All three section headers follow the file header and are delimited by 16 <code>ff</code> bytes.
+Each section has a 64-byte header which includes the section name, absolute offset to the section start and six relative offsets to segments within the section. All three section headers follow the file header and are delimited by 16 delimiter bytes (<code>0xFF</code>).
 {| class="wikitable"
 |+Section Header Specification
@@ Line 273: / Line 273: @@
 ==== Section Name ====
-There are only three section names: <code>__classnames__</code>, <code>__types__</code> and <code>__data__</code>. The section name is a null-terminated string with a delimiter byte of FF in byte 20.
+There are only three section names: <code>__classnames__</code>, <code>__types__</code> and <code>__data__</code>. The section name is a null-terminated string with a delimiter byte (<code>0xFF</code>) in byte 20.
 ==== Absolute Offset ====
@@ Line 295: / Line 295: @@
 * <code>0x3c20</code>
 * <code>0x3c20</code>
 <references />
 [[Category:File formats]]

imported>Zephenryus: /* Havok File Specification */ Added section header details

2019-01-17T18:26:54Z

Havok File Specification: Added section header details

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