Havok Sdk 2010 2.0-r1 Today

| Issue | Likely Solution | |-------|----------------| | Linker errors on hkMemoryAllocator | Ensure hkBase.lib and hkMemoryInitUtil::init() called before any Havok object creation. | | Crash in hkpWorld::stepDeltaTime | Check world's multithreading mode – use HK_MULTITHREADING_IGNORE in single-threaded builds. | | Animation binding fails | Havok 2010 uses .hka binary format; rebuild .hkx via older Max/Maya plugins (2010-era Havok Content Tools). | | Havok Visual Debugger connection refused | Use Havok Visual Debugger 2010.2 (older versions won't connect). Disable Windows firewall for port 20500. |

While the run-time physics were the star, the Havok Vision Engine and the Visual Debugger (VDB) improvements in the 2010 release changed how developers worked.

The 2010 SDK rolled out a much more robust pipeline for artists, not just programmers. Previously, a physics collision mesh had to be hand-coded by a technical artist. The 2010 tools allowed for better integration with DCC tools (Digital Content Creation tools like 3ds Max and Maya). This meant that the jagged, unfair collision geometry of previous years began to smooth out. The "invisible walls" that plagued early PS3/360 games became less frequent, as the tools allowed developers to visualize collision hulls in real-time within the editor.

| Module | Purpose | | :--- | :--- | | hkBase | Memory allocation, containers (hkArray, hkMap), string management. Replaced the older hkString system with SSE-optimized allocators. | | hkPhysics | The heart. Rigid bodies, constraints, collision queries, and the hkpWorld simulation island system. | | hkCollide | Narrow-phase collision detection. Supported primitive-sphere, capsule, box, convex hull, and mesh shapes. Included GJK/EPA for convex vs. convex. | | hkAnimation | The Havok Animation engine (often bundled separately, but integrated in 2010.2.0). Included retargeting, blending, and bone masks. | | hkBehavior | An early version of Havok Behavior (predecessor to Havok AI and full Behavior), used for scripted physical interactions. | havok sdk 2010 2.0-r1

If you played a AAA action game in 2010 or 2011, you were likely looking at Havok 2010. The SDK introduced significant improvements to its Keyframed Motion and Dynamic Animation blending.

Before this version, physics interactions often looked "floaty" or "drunk." The 2010 iteration refined the mass calculation of jointed bodies. This gave us the "heavy" feeling of character death animations. When you shot an enemy in Fallout: New Vegas (released Oct 2010, likely built on this or a very closely related branch) and watched them tumble over a railing, that satisfying weight was the result of the SDK’s improved constraint solvers.

It wasn't just about death, either. This SDK improved the interaction between physics objects and animation states. It allowed for "procedural animations"—where the game engine could blend a pre-made animation with real-time physics. This was the tech that allowed characters to place a hand on a wall dynamically while walking, rather than clipping through it. | Issue | Likely Solution | |-------|----------------| |

The SDK included a visual editor (Havok Behavior Tool) where technical artists would create .hkx files containing the behavior graph. This graph managed:

For those who remember, initializing a simple physics world in 2010-r1 looked like this:

#include <hkBase.h>
#include <hkdynamics/world/hkpWorld.h>

// Initialize the memory system (THE DREADED PART)
hkMemoryRouter* memoryRouter = hkMemoryInitUtil::initDefault(
hkMallocAllocator::m_defaultMallocAllocator,
hkMemorySystem::FrameInfo(1024 * 1024)
);
hkBaseSystem::init(memoryRouter, errorReport); not just programmers. Previously


// Create the world
hkpWorldCinfo worldInfo;
worldInfo.m_gravity.set(0.0f, -9.8f, 0.0f);
worldInfo.m_collisionTolerance = 0.1f;


hkpWorld* physicsWorld = new hkpWorld(worldInfo);
physicsWorld->markForWrite();
physicsWorld->addEntity(myRigidBody);
physicsWorld->unmarkForWrite();


// Step the world (60Hz)
physicsWorld->stepDeltaTime(1.0f / 60.0f);

That markForWrite() / unmarkForWrite() lock pattern drove everyone crazy, but it also meant zero race conditions on the PS3’s SPUs.

Impressum