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Hidden on this 34-person team: the guy who wrote the physics engine for Angry Birds (Box2D) AND Blizzard's internal physics engine (Domino). "He's so shy and so humble, he was at a GDC talk about Angry Birds physics and just went up and said 'yeah, I wrote that physics... show more

Majid Manzarpour

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58,014 görüntüleme • 5 ay önce •via X (Twitter)

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🚀 Big milestone! I've replaced almost my entire Unreal Engine physics pipeline with Box3D. Sharing the latest progress on Box3DUnreal: a free, open-source Box3D integration for Unreal Engine focused on lightweight and high-performance physics. Try it, report issues, suggest improvements, or contribute on GitHub. The goal is to build something the Unreal community can improve together. Huge thanks to emptyvessel for the support and for giving me the opportunity to work on DEFECT, where I continue pushing gameplay, destruction, networking, and physics. Check comments for the link 🔗 #UnrealEngine #UE5 #GameDev #OpenSource #Box3D

🚀 Big milestone! I've replaced almost my entire Unreal Engine physics pipeline with Box3D. Sharing the latest progress on Box3DUnreal: a free, open-source Box3D integration for Unreal Engine focused on lightweight and high-performance physics. Try it, report issues, suggest improvements, or contribute on GitHub. The goal is to build something the Unreal community can improve together. Huge thanks to emptyvessel for the support and for giving me the opportunity to work on DEFECT, where I continue pushing gameplay, destruction, networking, and physics. Check comments for the link 🔗 #UnrealEngine #UE5 #GameDev #OpenSource #Box3D

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I like creating machines in my physics engine, and then driving them in the world, trying to do things. I did not expect this one to care so little about fallling into a trap.

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Chubby♨️

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Clutch will be using UE5 with a custom physics engine for aspects such as: - Tire temperature - grip levels - suspension - etc. From what I've seen the game is very gorgeous and didn't seem that have that UE5 stutter that I've seen in other open world unreal engine games

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Felix Z

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Why the character movement in my custom game engine felt janky and how I fixed it. In a game engine, most often, a character moves using the physics engine. Meaning, the player is not just a coordinate in space but a physical body. It has velocity, it handles collisions, and it interacts with the world. Now, as you might know, physics engines need stability. If you run them at variable framerates, things start breaking. Objects phase through walls or fly off into space because the math becomes unpredictable. This is why most game engines lock their physics loop to a 60Hz fixed rate. But here’s the problem: If you have a high-end system, you don't want to limit it at 60 FPS. That's a waste of good hardware. Now, that said, if the GPU is rendering at 144 FPS but the player's position (physics driven) only updates 60 times a second, it creates a micro-stutter that ruins the "smooth" feel of the game. A good way to fix this is to treat the character as two separate things: 1. The Physics Body (Invisible part): This is the "real" character. It lives in the 60Hz physics world, it moves the player and handles collisions. 2. The Visual Model and Camera (Visible part): This is what the player actually sees. It doesn't care about collisions, its only job is to look nice and smooth at whatever framerate the GPU is pushing. Once you have this separation, you can use interpolation to keep them in sync. Every time the physics clock ticks, you save the previous position of the invisible body before moving it to the new one. Between those ticks, calculate how far we are between the last physics update and the next one. By using this to drive the visible parts of the game, the stutters disappear. The physics loop stays fixed behind the scenes, while the visuals slide smoothly between the snapshots. Example: - Right after a tick: blend_weight= 0.0 (The visual model stays at the old physics position). - Halfway to the next: blend_weight= 0.5 (The visual model slides to the middle point). - Just before the next: blend_weight= 0.9 (The visual model is almost at the new physics position). Pro-Tip A critical mistake I made initially, and one many devs make, is parenting the camera and visible parts directly to the player body. If you do this, the camera inherits the discrete 60Hz physics movement by default. In that setup, interpolation won't work because the camera is "stuck" to the physics clock. For this fix to work you must decouple the camera and visuals from the body and move them separately. Player movement processing in Detis Engine: - fixed_process: Physics runs at 60Hz. Handles collisions and raw movement. - process: Variable rate. Mainly used for player input caching in the player case. - late_process: Variable rate. Handles interpolated camera movement after physics and everything else is done being processed. - render. Submits the final interpolated transforms to the GPU. The test environment in the video is running on an old 2070-based laptop. Hopefully the video compression won't introduce any stutter... I’m sharing this in hopes it helps a fellow dev. Cheers.

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Jake Brown said Zion Theophilus wrote every guy on the team a note that listed everything they’re good at and doing well for the team. “At the bottom, he wrote, ‘Believe it.’” #LSU

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Cory Diaz

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Guys, I got it working! 🥹 CT now has better push physics and it made the game feel so good! I struggled for over a year recreating this "simple" physics behavior because it cannot be found anywhere on the internet, and I don't have anyone who is an expert in this kind of stuff..

Guys, I got it working! 🥹 CT now has better push physics and it made the game feel so good! I struggled for over a year recreating this "simple" physics behavior because it cannot be found anywhere on the internet, and I don't have anyone who is an expert in this kind of stuff..

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Our good friend Dean Yurke - Unreal Engine and VFX Filmmaking is back once again with another Unreal Engine tutorial for filmmaking, this time on Ragdoll Physics 🤸 From slapstick splatting against solid surfaces to flip-flying through the air, this multi-method tutorial will show you how to manipulate existing physics assets or how to start from scratch with your own digital double. Check it out right now:

Our good friend Dean Yurke - Unreal Engine and VFX Filmmaking is back once again with another Unreal Engine tutorial for filmmaking, this time on Ragdoll Physics 🤸 From slapstick splatting against solid surfaces to flip-flying through the air, this multi-method tutorial will show you how to manipulate existing physics assets or how to start from scratch with your own digital double. Check it out right now:

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Sergey Brin says retiring in January 2020 was the “worst decision”. He planned to sit at cafes and read about physics all day but started “spiralling”. So, he went back to Google’s office to work with the Gemini team and says “the technical, creative output was very rewarding.”

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𝐃𝐚𝐯𝐢𝐝 𝐙 🇷🇺🇮🇪

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Vaibhav Sisinty

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Olaf made a special appearance on stage with NVIDIA CEO Jensen Huang at #NVIDIAGTC.☃️ NVIDIA and Disney Research are working together to bring this beloved character into the real world using Newton, the open-source physics engine.

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"All these people working together to develop science is what made it possible." Hear what this year's physics laureate John Martinis said just a few hours after hearing the news of his 2025 Nobel Prize in Physics. Martinis and his fellow physics laureates will be delivering their Nobel Prize lectures on 8 December. Watch live online at

The Nobel Prize

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Before the big leagues, Jim Morris was a 35-year-old physics teacher. He coached the baseball team at Reagan County High School and made a bet with his team that he would tryout for the Rays if they made the playoffs. They did, and the rest is history.

Before the big leagues, Jim Morris was a 35-year-old physics teacher. He coached the baseball team at Reagan County High School and made a bet with his team that he would tryout for the Rays if they made the playoffs. They did, and the rest is history.

Big League Digest

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A theoretical physics course opens not with equations but with the rules for saying anything true at all. This is lecture 1 of Lectures on the Geometric Anatomy of Theoretical Physics, taught by Frederic Schuller. The topic is propositional and predicate logic. Most physics courses assume logic and start with mechanics. Schuller refuses. Before manifolds, before tensors, before a single physical claim, he builds the language the claims will be written in. The audience is advanced students who have already met the physics. He is going back under it and rebuilding the floor. Watch how precisely he states each rule, then shows what collapses if you loosen it. No appeals to intuition anywhere in the hour. A machine learning engineer I know worked through the first 10 lectures and said proofs stopped feeling like a different profession. Free on YouTube, green chalkboard, German lecture hall. Everyone starts with the physics. He started with what counts as true.

A theoretical physics course opens not with equations but with the rules for saying anything true at all. This is lecture 1 of Lectures on the Geometric Anatomy of Theoretical Physics, taught by Frederic Schuller. The topic is propositional and predicate logic. Most physics courses assume logic and start with mechanics. Schuller refuses. Before manifolds, before tensors, before a single physical claim, he builds the language the claims will be written in. The audience is advanced students who have already met the physics. He is going back under it and rebuilding the floor. Watch how precisely he states each rule, then shows what collapses if you loosen it. No appeals to intuition anywhere in the hour. A machine learning engineer I know worked through the first 10 lectures and said proofs stopped feeling like a different profession. Free on YouTube, green chalkboard, German lecture hall. Everyone starts with the physics. He started with what counts as true.

Gaspar

18,754 görüntüleme • 20 gün önce

so amazed with the performance of #threejs! here are 256 baddies in my tiny homebrew FPS engine, each is running a-star pathfinding AI and physics rigidbody sim (falling/stacking/ragdolls etc) 60fps! no ECS, no threads, no gpu instancing! I should make a zombie game!! #gamedev

so amazed with the performance of #threejs! here are 256 baddies in my tiny homebrew FPS engine, each is running a-star pathfinding AI and physics rigidbody sim (falling/stacking/ragdolls etc) 60fps! no ECS, no threads, no gpu instancing! I should make a zombie game!! #gamedev

Christer McFunkypants Kaitila

12,627 görüntüleme • 3 yıl önce