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Just out of curiosity: does anyone know any real-time multiplayer game that runs the physics simulations on the server side? AFAIK, only Rocket League is doing

Just out of curiosity: does anyone know any real-time multiplayer game that runs the physics simulations on the server side? AFAIK, only Rocket League is doing this (and they have some good talks about it on GDC).

bob1029 4y ago
Here is the GDC talk: https://www.youtube.com/watch?v=ueEmiDM94IE https://www.youtube.com/watch?v=ueEmiDM94IE Of particular note is the fact that they run their physics loop at 120hz to minimize error.
DecoPerson 4y ago
Physics on the server? Nearly every shooter game. Server-authoritative is the way. As per the article, the clients only predict some physics objects (requires simulation) and interpolates & extrapolates others (does not require simulation). The clients have no first authority over the server’s simulation, other than their own player inputs.
GartzenDeHaes 4y ago
Minecraft does physics and lighting on the server, although the physics model is very simplistic.
- strictfp 4y ago
  Physics is also ran on the client, but the server is authoritative and can correct or override client decisions.
Thaxll 4y ago
Pretty much every serious online games do it.
antris 4y ago
If it's anything serious/competitive and has to have integrity without having trust between enemy players, the server has to run the simulations. Otherwise it would be extremely easy to cheat just by modifying the client code and memory.
- bruce343434 4y ago
  Though you can have client-side physics engine running as an interpolation between authoritative server states.
maccard 4y ago
Multiplay Crackdown 3 (I worked on it) runs a fairly meaty physics simulation on the server side.
piinecone 4y ago
For my game, King of Kalimpong, I run physics on the client and the server. The server is the boss but the client feels good. I suspect most games where movement is primarily physics-based are doing this, but who knows, netcode tends to be very game-specific.

bob1029 4y ago

Here is the GDC talk: https://www.youtube.com/watch?v=ueEmiDM94IE https://www.youtube.com/watch?v=ueEmiDM94IE Of particular note is the fact that they run their physics loop at 120hz to minimize error.

DecoPerson 4y ago

Physics on the server? Nearly every shooter game. Server-authoritative is the way. As per the article, the clients only predict some physics objects (requires simulation) and interpolates & extrapolates others (does not require simulation). The clients have no first authority over the server’s simulation, other than their own player inputs.

GartzenDeHaes 4y ago

Minecraft does physics and lighting on the server, although the physics model is very simplistic.

strictfp 4y ago
Physics is also ran on the client, but the server is authoritative and can correct or override client decisions.

Thaxll 4y ago

Pretty much every serious online games do it.

antris 4y ago

If it's anything serious/competitive and has to have integrity without having trust between enemy players, the server has to run the simulations. Otherwise it would be extremely easy to cheat just by modifying the client code and memory.

bruce343434 4y ago
Though you can have client-side physics engine running as an interpolation between authoritative server states.

maccard 4y ago

Multiplay Crackdown 3 (I worked on it) runs a fairly meaty physics simulation on the server side.

piinecone 4y ago

For my game, King of Kalimpong, I run physics on the client and the server. The server is the boss but the client feels good. I suspect most games where movement is primarily physics-based are doing this, but who knows, netcode tends to be very game-specific.