Changelog

Physics performance pass and script hot-reload reliability fixes.

• FixedHot-reload no longer drops coroutine state when a script is re-imported mid-frame.
• FixedCapsule vs trimesh collision could produce NaN contact normals on near-parallel faces.
• FixedRigidBody.is_grounded returned false for one frame after a jump impulse.
• ChangedBroadphase BVH rebuild is now deferred to the end of the physics tick, reducing per-frame stalls by ~18%.
• ChangedPhysics debug overlay now shows contact point impulse magnitudes as colour-coded dots.
• AddedNew RigidBody.on_collision_enter / on_collision_exit Python callbacks.

Soft body simulation, async coroutines, and the new animation state machine.

• AddedSoftBody component: cloth and rope simulation via position-based dynamics. Configurable stiffness, damping, and iteration count.
• Addedasync/await support in Component lifecycle methods. Use await self.wait(seconds) to pause execution without blocking the engine.
• AddedAnimationStateMachine node: build character animation graphs with transitions, blend trees, and Python-driven conditions.
• AddedNew @sync decorator for automatic property replication in multiplayer sessions.
• ChangedScene editor property inspector now reflects Python type annotations directly — no manual registration needed.
• ChangedExport pipeline now produces BC7-compressed textures on Windows and ASTC on macOS/Linux by default.
• FixedDirectional light shadow cascades had a 1-pixel seam at the transition between cascade levels.
• FixedAsset hot-reload could crash the renderer when a texture was replaced while in use by an active draw call.

Stability fixes following the 0.3.0 renderer rewrite.

• FixedSSAO pass produced incorrect occlusion when the camera field-of-view was set below 40°.
• FixedSpot light shadows were inverted when the light was rotated more than 180° on the Y axis.
• FixedMemory leak in the particle system when emitters were destroyed while active.
• FixedPython traceback in on_ready was silently swallowed instead of surfaced to the editor console.
• SecurityUpdated bundled CPython to 3.12.8 to address CVE-2025-21601.

Complete deferred rendering rewrite with PBR materials and HDR pipeline.

• AddedFull deferred PBR renderer: metallic/roughness workflow, image-based lighting, and environment probes.
• AddedHDR bloom, depth of field, and motion blur post-process stack — all configurable per camera in Python.
• AddedScreen-space ambient occlusion (SSAO) and screen-space reflections (SSR).
• AddedCustom GLSL shader support: write vertex + fragment shaders and expose uniforms to the Python layer.
• ChangedForward renderer removed. All projects now use the deferred pipeline. See the migration guide in the docs.
• ChangedMaterial API redesigned — BaseMaterial replaced by PBRMaterial, UnlitMaterial, and ShaderMaterial.
• RemovedLegacy vertex-colour materials removed. Bake vertex colours into a texture before upgrading.

Networking alpha: authoritative server, state sync, and lobby API.

• AddedNetworkManager singleton: start a server, connect clients, and handle disconnections from Python.
• Added@rpc(target='server') and @rpc(target='all') decorators for remote procedure calls.
• AddedLobbyAPI: create, browse, and join lobbies over LAN or internet with built-in NAT punchthrough (up to 16 players in early access).
• AddedClient-side prediction helper: NetworkRigidBody component applies local prediction and reconciles with server state.
• ChangedProject settings now include a Network section with tick rate, interpolation, and bandwidth-cap configuration.
• FixedEditor crashed on launch when no audio output device was present.

First public early-access release. Core engine, physics, and editor.

• AddedPython 3.12 scripting runtime with full stdlib access and pip package support.
• AddedRigid body physics: box, sphere, capsule, and convex hull collision shapes; joints and constraints.
• AddedVisual scene editor with transform gizmos, property inspector, and one-click play mode.
• AddedAsset pipeline: FBX, GLTF, OBJ, PNG, JPG, WAV, OGG import with automatic hot-reload.
• AddedForward renderer with Phong shading, directional/point/spot lights, and shadow maps.
• AddedExport to Windows, macOS, and Linux with embedded CPython runtime.