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sfsim
Jan Wedekind Developer
Jan Wedekind Publisher
1970-01-01 Release
Game News Posts: 2
🎹🖱️Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews (0 reviews)
Landing Gear Physics


I have created landing gear animations with Blender, baked them, and exported the result to glTF. "Inverse kinematics", "Damped track", and "Child of" constraints where used to ensure that torque link, resistance rod, and piston are animated correctly. Animations affecting multiple objects are merged using NLA track names when exporting to glTF. I didn't find a way to create multiple animations affecting the same objects, so I had to sequence steering, suspension, and gear deployment in the same animation. Wheel rotation however was kept separate. The following screen recording shows Blender playing back the sequence of steering, suspension, and gear deployment in parallel with the wheel rotation. [previewyoutube=A_yCNBr2qdU;full][/previewyoutube] The model including the animations are imported using the Assimp bindings of LWJGL. The suspension and wheel rotation then can be driven using the wheeled vehicle constraint of the Jolt Physics engine. The planet surface was simulated by extracting 3x3 tiles from the planetary cube map and converting them to a static Jolt mesh. By simulating the wheels as moving surfaces, the numerical instabilities of simulating a rotating cylinder with constraints directly are avoided. The result is a beautiful interaction of the landing gear with the ground as shown in the following video (music: "Dune" by Andrewkn). [previewyoutube=GiBjMYRKbfU;full][/previewyoutube] If you are interested in a realistic space flight simulator, please consider wishlisting sfsim on Steam.


[ 2025-05-30 21:00:04 CET ] [ Original post ]

sfsim is a space flight simulator with realistic physics and a true-to-scale Earth using NASA Bluemarble data.

Current key features

  • Realistic Physics: Simulate space flight and aerodynamics.
  • True-to-scale Earth: Earth model based on NASA Bluemarble data.
  • Realistic atmosphere: Atmosphere with realistic temperature and density as well as procedurally generated volumetric clouds.
  • Real celestial body positions: Position of Earth and Sun based on NASA data.

Music by Andrewkn.


MINIMAL SETUP
  • OS: Ubuntu 22.04
  • Processor: Intel Core i7 / AMD Ryzen 7
  • Graphics: Nvidia GeForce GTX 1060
  • Storage: 15 GB available space
RECOMMENDED SETUP
  • OS: Ubuntu 24.04
  • Processor: Intel Core i7 / AMD Ryzen 7
  • Graphics: Nvidia GeForce GTX 3060
  • Storage: 15 GB available space

GAMEBILLET

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1.28$ (91%)
0.85$ (91%)
7.44$ (70%)
2.55$ (85%)
1.91$ (87%)
3.0$ (50%)
11.24$ (55%)
MacGamestore

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38.99$ (13%)
1.49$ (85%)
49.99$ (17%)
1.10$ (93%)
1.99$ (87%)
8.99$ (10%)
2.49$ (88%)
1.19$ (88%)
27.49$ (8%)
14.99$ (57%)
52.99$ (12%)
1.28$ (87%)
0.99$ (75%)
1.42$ (93%)
5.99$ (80%)
1.99$ (60%)
2.48$ (75%)
1.10$ (84%)
2.99$ (85%)
1.99$ (89%)
1.19$ (88%)
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2.98$ (85%)
1.99$ (85%)
1.24$ (75%)
43.99$ (27%)
1.09$ (93%)
2.98$ (80%)
1.69$ (83%)

FANATICAL BUNDLES

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HUMBLE BUNDLES

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