How can I calculate speed based on previous speed?

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SUMMARY

The discussion focuses on calculating speed in a Train Simulator program by revising the existing formula to incorporate previous speed and frame timing. The proposed formula is: Speed = (f/m) * time between frames + previous speed. This approach addresses issues related to frame rate drops and force changes, providing a more stable speed calculation. The user seeks assistance in implementing this method effectively.

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  • Knowledge of frame timing in game development.
  • Experience with mathematical modeling in programming.
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  • Research "Physics-based simulation in game development" for foundational concepts.
  • Learn about "Frame rate management techniques" to handle performance drops.
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Tim Leijten
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Hi,

I am developing a Train Simulator kind of program where I calculate speed each frame.
I currently do that by:
Speed = (f/m)*elapsed frames*time between frames
This works, but goes wrong when there are framerate drops or if the force changes, that's why i want to calculate the speed with the speed in the previous frame, and the time a frame took to complete.
Can someone help me with calculating speed based on the previous speed and time between frames?Thanks
 
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It's just a minor revision of the equation you have:
Speed = (f/m)*time between frames+ previous speed
 
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russ_watters said:
It's just a minor revision of the equation you have:
Speed = (f/m)*time between frames+ previous speed
Thank you!
 
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