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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 просмотров • 6 месяцев назад •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

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Antonio Lattanzio

107,218 просмотров • 2 месяцев назад

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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Zolden

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Felix Z

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Farzam 🔜 Gamescom

246,690 просмотров • 3 месяцев назад

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.

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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ELON: I STRONGLY RECOMMEND STUDYING PHYSICS “I studied physics and I certainly strongly recommend physics as a good grounding to understand the nature of reality. Physics is fundamentally just understanding how the universe actually works. And then that's a good foundation for then a variety of engineering disciplines. I think also the analytical principles, the sort of analytical constructs used in physics apply to basically anything. Physics developed all these ways of thinking, like first-principles thinking, thinking about things in the limit, high and low, testing your hypothesis. It's the scientific principle, essentially. These things are incredibly helpful in all arenas.” Source: Axel Springer Pioneer's Talk, December 2020

ELON: I STRONGLY RECOMMEND STUDYING PHYSICS “I studied physics and I certainly strongly recommend physics as a good grounding to understand the nature of reality. Physics is fundamentally just understanding how the universe actually works. And then that's a good foundation for then a variety of engineering disciplines. I think also the analytical principles, the sort of analytical constructs used in physics apply to basically anything. Physics developed all these ways of thinking, like first-principles thinking, thinking about things in the limit, high and low, testing your hypothesis. It's the scientific principle, essentially. These things are incredibly helpful in all arenas.” Source: Axel Springer Pioneer's Talk, December 2020

Mario Nawfal

336,412 просмотров • 1 год назад

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WebGL / WebGPU

14,778 просмотров • 9 месяцев назад

Trying Fable 5.1 in unreal engine. I’ve got a pretty serious physics game demo prompt to toss at it with the MCP. 5.6 Sol did well on this, in an environment like Unreal Engine there is so much room for improvement! Claude typically is better in 3D so I’m super curious..

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MattVidPro

11,955 просмотров • 1 месяц назад

Elon’s entire engineering philosophy in one sentence: “Physics is the law, and everything else is a recommendation” "Physics is a harsh judge, and there's no fooling physics. If something's wrong, the rocket's going to explode. It's not going to get to orbit. So it's not like, "Elon, you're amazing," meanwhile the rockets are blowing up. It's hard to say you're really kicking ass here when the rockets are exploding.....that's just not the case Generally, the rockets need to get to orbit, the satellites need to work, the Starlink connection needs to work, or bad things happen. This is sort of a physics situation, and physics is a harsh judge. I say physics is the law, and everything else is a recommendation. I've seen people break the laws made by humans, but I've not seen anyone break the laws made by physics. And rockets are ruled by physics"

Elon’s entire engineering philosophy in one sentence: “Physics is the law, and everything else is a recommendation” "Physics is a harsh judge, and there's no fooling physics. If something's wrong, the rocket's going to explode. It's not going to get to orbit. So it's not like, "Elon, you're amazing," meanwhile the rockets are blowing up. It's hard to say you're really kicking ass here when the rockets are exploding.....that's just not the case Generally, the rockets need to get to orbit, the satellites need to work, the Starlink connection needs to work, or bad things happen. This is sort of a physics situation, and physics is a harsh judge. I say physics is the law, and everything else is a recommendation. I've seen people break the laws made by humans, but I've not seen anyone break the laws made by physics. And rockets are ruled by physics"

X Freeze

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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

82,735 просмотров • 6 месяцев назад

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..

Lez

83,307 просмотров • 3 лет назад

Gavin Baker says the physics PhDs calling orbital data centers impossible on X have not out-thought the 10,000 SpaceX engineers who treat it as solved "It's very hard for me to engage. There are all these people on X and they're like, I am a physics PhD and this is impossible." "There's a friend, another investor, who actually is a physics PhD, who I had many arguments about it with him, and he's like, I am a PhD and this is impossible. And then he goes to the SpaceX day and talks to the SpaceX engineers, and he's like, well, I was wrong." "So let's say you're an astrophysics PhD. You are brilliant, you're hanging 100 IQ points on me. Have you thought about this for an hour? Have you thought about it for 10 hours?" "Because you have 10,000 of the world's smartest engineers at SpaceX who've thought about this each for hundreds if not thousands of hours. And the sum of that, working with very sophisticated engineering tools, is it's a solved problem." _______ For more on Gavin Baker:

Gavin Baker says the physics PhDs calling orbital data centers impossible on X have not out-thought the 10,000 SpaceX engineers who treat it as solved "It's very hard for me to engage. There are all these people on X and they're like, I am a physics PhD and this is impossible." "There's a friend, another investor, who actually is a physics PhD, who I had many arguments about it with him, and he's like, I am a PhD and this is impossible. And then he goes to the SpaceX day and talks to the SpaceX engineers, and he's like, well, I was wrong." "So let's say you're an astrophysics PhD. You are brilliant, you're hanging 100 IQ points on me. Have you thought about this for an hour? Have you thought about it for 10 hours?" "Because you have 10,000 of the world's smartest engineers at SpaceX who've thought about this each for hundreds if not thousands of hours. And the sum of that, working with very sophisticated engineering tools, is it's a solved problem." _______ For more on Gavin Baker:

Fireside Alpha

1,615,680 просмотров • 1 месяц назад

For those new followers who have been so gratious.... who am I? I was the first employee of #DMADesign, and I created the #Lemmings animation that spawned the game. I then created the prototypes that spawned #GTA, and wrote the graphics engine for it.

For those new followers who have been so gratious.... who am I? I was the first employee of #DMADesign, and I created the #Lemmings animation that spawned the game. I then created the prototypes that spawned #GTA, and wrote the graphics engine for it.

Mike Dailly™ 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇺🇦🇵🇸💙🌱

30,356 просмотров • 1 месяц назад

JELLY PHYSICS + FUR is an absolute cheat code 😭 I built this tiny furry monster jumping game with GPT-6 Astra on Happycapy , and the interaction feels ridiculously good. GPT-6 Astra is getting scary good at this kind of interactive 3D physics. I dropped the game link in the comments. Give it a try 👇

JELLY PHYSICS + FUR is an absolute cheat code 😭 I built this tiny furry monster jumping game with GPT-6 Astra on Happycapy , and the interaction feels ridiculously good. GPT-6 Astra is getting scary good at this kind of interactive 3D physics. I dropped the game link in the comments. Give it a try 👇

Min Zhou

11,855 просмотров • 25 дней назад

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:

Unreal Engine

46,188 просмотров • 1 год назад

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.”

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.”

Bearly AI

1,527,192 просмотров • 9 месяцев назад

MiniMax M2.7 is real deal man I have made a complete website with proper fan physics and fibre physics this looks so good MiniMax (official) i am waiting for the next update man , i want a big model next cook it for us Prompt is in comment for normal paper receipt physics sim

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Chetaslua

186,910 просмотров • 6 месяцев назад

Someone on Reddit just built a AAA-quality snow simulation in their browser. Using Claude Opus 5. Millions of snow particles. A character in a robe with cloth physics. Five water-based spells that carve the terrain. A snow surfing system with a wake that throws spray into sunlight. Every footstep displaces snow. Trails form berms at the edges. Trenches slowly refill over time. Spells leave permanent craters. The entire thing runs in one browser tab. WebGPU. No game engine. No 3D modeling software. Just code. He wrote one detailed prompt. Opus 5 planned the architecture, wrote the shaders, built the physics, iterated from screenshots, and documented every decision. 9 hours. ~4 million tokens. You can open it right now and walk around in it. This isn't a demo. This is the kind of thing a small studio would spend months building.

Someone on Reddit just built a AAA-quality snow simulation in their browser. Using Claude Opus 5. Millions of snow particles. A character in a robe with cloth physics. Five water-based spells that carve the terrain. A snow surfing system with a wake that throws spray into sunlight. Every footstep displaces snow. Trails form berms at the edges. Trenches slowly refill over time. Spells leave permanent craters. The entire thing runs in one browser tab. WebGPU. No game engine. No 3D modeling software. Just code. He wrote one detailed prompt. Opus 5 planned the architecture, wrote the shaders, built the physics, iterated from screenshots, and documented every decision. 9 hours. ~4 million tokens. You can open it right now and walk around in it. This isn't a demo. This is the kind of thing a small studio would spend months building.

Vaibhav Sisinty

1,220,313 просмотров • 2 месяцев назад

CHINA, almost breaking the laws of Physics ! They just released a new Rocket engine that allows right angle change in direction at a Record MACH 2.6 and can max at MACH 16 : 20,000 KMS !! CHINA is leagues ahead of Everyone !

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