Auto wheel assignment for native mira imports [SYNTH-292] (#1456)

Author: BrandonPacewic

fission/src/mirabuf/MirabufLoader.ts

@@ -8,6 +8,7 @@ import InitialConfigPanel from "@/panels/configuring/initial-config/InitialConfi
 import { PAUSE_REF_ASSEMBLY_SPAWNING } from "@/systems/physics/PhysicsTypes.ts"
 import { createMirabuf } from "@/mirabuf/MirabufSceneObject.ts"
 import { getTargetControls } from "@/systems/scene/CameraControls.ts"
+import { detectAndTagWheels } from "@/systems/simulation/synthesis_brain/WheelDetector"
 import type { EncodedAssembly, Message } from "@/systems/multiplayer/types.ts"
 import { ProgressHandle } from "@/components/ProgressNotificationData.ts"
 
@@ -271,6 +272,10 @@ class MirabufCachingService {
             return
         }
 
+        if (assembly.dynamic) {
+            detectAndTagWheels(assembly)
+        }
+
         const info = await MirabufCachingService.storeAssemblyInCache(assembly, { miraType })
         if (!info) return
 

fission/src/systems/simulation/synthesis_brain/WheelDetector.ts

@@ -287,6 +287,9 @@ export function detectAndTagWheels(assembly: mirabuf.Assembly): void {
     const jointDefs = assembly.data?.joints?.jointDefinitions as Record<string, mirabuf.joint.IJoint> | undefined
     if (!jointDefs) return
 
+    const hasExistingWheels = Object.values(jointDefs).some(jDef => jDef.userData?.data?.["wheel"] === "true")
+    if (hasExistingWheels) return
+
     const candidates = extractCandidates(jointDefs)
     if (candidates.length < 2) return