zwitschi
4f3ed20e49
The physics asset could not be made from Python (PhysicsAssetFactory exposes no mesh property), so a small editor-only C++ helper calls FPhysicsAssetUtils::CreateFromSkeletalMesh - the same code path as the editor's Create Physics Asset action. It produces PA_Vehicle_Sedan with 6 bodies and assigns it to SK_Vehicle_Sedan. AGigLineVehicle is a Chaos wheeled pawn that configures its four wheels from the modelled dimensions (radius 33 cm, wheelbase 278, track 156) and is staged in DemoMap. A run logs: spawned at (-12950, -900, 120), 4 wheel setups settled at Z 494 cm, simulating=1, speed=0 cm/s That last line is the defect and it is not hidden: the vehicle rests 3.7 m above the road, so the generated physics bodies do not match the mesh. Recorded in TODO.md with the next step - inspect the bodies against the mesh, then either fix the creation params or author two boxes and four wheel spheres explicitly.
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#pragma once
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#include "CoreMinimal.h"
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#include "WheeledVehiclePawn.h"
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#include "GigLineVehicle.generated.h"
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class UChaosWheeledVehicleMovementComponent;
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/**
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* The one drivable vehicle in the demo.
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*
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* A skeletal mesh with a root bone and four wheel bones, driven by Chaos. Every
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* dimension it configures — wheel radius, wheelbase, track — comes from the Blender
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* build's report rather than being typed twice: the numbers are repeated here as
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* constants with the report path in the comment so a change to the model shows up as a
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* mismatch instead of a silent drift.
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*
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* Model: `Art/blender/vehicle/gigline-sedan.blend`, report `Art/blender/vehicle/report.json`
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* (4.72 x 1.80 x 1.44 m, wheelbase 2.78 m, track 1.62 m, wheel radius 0.33 m).
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*/
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UCLASS()
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class GIGLINE_API AGigLineVehicle : public AWheeledVehiclePawn
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{
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GENERATED_BODY()
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public:
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AGigLineVehicle();
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virtual void BeginPlay() override;
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virtual void Tick(float DeltaSeconds) override;
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/** True once the vehicle reports a forward speed above a walking pace. */
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bool IsMoving() const;
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private:
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/** Configure the Chaos wheels from the modelled dimensions. */
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void ConfigureWheels();
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float SettleElapsed = 0.f;
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bool bSettleReported = false;
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};
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