Havok
Havok is a middleware software suite developed by the Irish company Havok. Havok provides a physics engine component and related functions to video games.
On September 14, 2007, Intel announced it had signed a definitive agreement to acquire Havok Inc.[1] In 2008, Havok was honored at the 59th Annual Technology & Engineering Emmy Awards for advancing the development of physics engines in electronic entertainment. On October 2, 2015, Microsoft announced it had acquired Havok.[2]
Products
The Havok middleware suite consists of the following modules:[3]
- Havok Physics: It is designed primarily for video games, and allows for real-time collision and dynamics of rigid bodies in three dimensions. It provides multiple types of dynamic constraints between rigid bodies (e.g. for ragdoll physics), and has a highly optimized collision detection library. By using dynamical simulation, Havok Physics allows for more realistic virtual worlds in games. The company was developing a specialized version of Havok Physics called Havok FX that made use of ATI and NVIDIA GPUs for physics simulations;[4] however, the goal of GPU acceleration did not materialize until several years later.[5]
- Havok AI: In 2009, Havok released Havok AI, which provides advanced pathfinding capabilities for games. Havok AI provides navigation mesh generation, pathfinding and path following for video game environments.
- Havok Cloth: Released in 2008, Havok Cloth deals with efficient simulation of character garments and soft body dynamics.
- Havok Destruction: Also released in 2008, Havok Destruction provides tools for creation of destructible and deformable rigid body environments.
- Havok Animation Studio (discontinued): Havok Animation Studio is formally known as Havok Behavior and Havok Animation. Havok Behavior is a runtime SDK for controlling game character animation at a high level using finite state machines. Havok Animation provides efficient playback and compression of character animations in games, and features such as inverse kinematics.
- Havok Script (discontinued): Havok Script is a Lua-compatible virtual machine designed for video game development. It is shipped as part of the Havok Script Studio.
- Havok Vision Engine (discontinued): On August 8, 2011, Havok announced their acquisition of German game engine development company Trinigy and their Vision Engine and toolset.
Usage
![[icon]](/wiki/File:Wiki_letter_w_cropped.svg){kind=small} | This section needs expansion. You can help by adding to it. |
Breath of the Wild uses the Havok Physics, Havok AI and Havok Cloth.
| Extension | Product | Description | Locations |
|---|---|---|---|
| hknm2 | Havok AI | Navigation meshes (used by AI for path finding) | NavMesh/
|
| hkrb | Havok Physics | Rigid body physics | |
| hkcl | Havok Cloth | Cloth physics | Physics/Cloth/
|
| hkrg | Havok Physics | Rag doll physics | Physics/Ragdoll/
|
| hksc | Havok Physics | Static compound physics | Physics/StaticCompound/
|
| hktmrb | Havok Physics | Terrain mesh rigid body physics | Physics/TeraMeshRigidBody/
|
File Types
hknm2
 | This section is empty. You can help by adding to it. |
hkrb
| | This section is empty. You can help by adding to it. |
hkcl
| | This section is empty. You can help by adding to it. |
hkrg
| | This section is empty. You can help by adding to it. |
hksc
| | This section is empty. You can help by adding to it. |
hktmrb
| | This section is empty. You can help by adding to it. |
Havok File Specification
Note that this specification only applies to version 2014.2.0-r1
Header
| Offset (h) | Size | Data Type | Description |
|---|---|---|---|
0x00
|
8 | Bytes | Havok file signature (magic) 57 E0 E0 57 10 C0 C0 10
|
0x08
|
4 | Unsigned Int | Unknown 00 |
0x0c
|
4 | Unsigned Int | Unknown 01 |
0x10
|
1 | Byte | Unknown 02 |
0x11
|
1 | Byte | Unknown 03 |
0x12
|
1 | Byte | Unknown 04 |
0x13
|
1 | Byte | Unknown 05 |
0x14
|
4 | Unsigned Int | Unknown 06 |
0x18
|
4 | Unsigned Int | Unknown 07 |
0x1c
|
4 | Unsigned Int | Unknown 08 |
0x20
|
4 | Unsigned Int | Unknown 09 |
0x24
|
4 | Unsigned Int | Unknown 10 |
0x28
|
16 | String | Havok version hk_2014.2.0-r1 for BotW files
|