feat: Integrate Jolt Physics as native host service in SpacetimeDB#1
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feat: Integrate Jolt Physics as native host service in SpacetimeDB#1
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Add Jolt Physics 5.0.0 as a native C++ host service accessible from WASM modules via host functions. Includes: - JoltC C API: Vehicle system (WheeledVehicleController) with structs for vehicle params, wheel state, and full vehicle state - Rust physics service: PhysicsState singleton managing multiple physics worlds, body creation/destruction, vehicle support, and 2-layer broadphase - WASM host functions: 18 physics_* functions in spacetime_10.5 namespace bridging WASM memory to native Jolt calls - C# bindings: High-level Physics.cs wrapper with serialization for FFI - Test module: physics-test-cs with tables, reducers, and 30Hz physics tick Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace the vendored joltc-sys-patched folder (~577 files, 11MB) with a git dependency pointing to pbisogno/jolt-rust feature/spacetimedb branch. The Jolt Physics code now lives in its own fork chain: - pbisogno/jolt-rust (build.rs patches for Windows/SpacetimeDB) - pbisogno/JoltC (Vehicle API additions) - jrouwe/JoltPhysics (upstream, unchanged) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Each module now owns its own Arc<PhysicsState>, ensuring: - Module A cannot access Module B's physics worlds - Physics resources are automatically cleaned up when a module is dropped - Multiple database instances can run independent physics simulations The PhysicsState flows through: ModuleCommon -> InstanceEnv -> host functions. Removed the global static PHYSICS singleton and physics() accessor. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Replace as_raw() with raw() to match current rolt/joltc-sys API - Add ? operator for create_body return type (now returns Option) - Fix borrow-then-move issue in v8/mod.rs by cloning physics Arc early - Add build_check.ps1 with MSVC + Strawberry Perl + LLVM setup Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Add Jolt Physics 5.0.0 as a native C++ host service accessible from WASM modules via host functions. Includes:
Description of Changes
API and ABI breaking changes
Expected complexity level and risk
Testing