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I tried to search something about bird-like animal flight simulation but it looks like everything is spammed with flappy bird 2D questions.

I want to have in my 3D game bird-like animals with realistic flight, for example we have a scene where player attacked by predator birds and he must attack them with gun. When I say bird-like, I mean that animal has wings.

As I understand I need to apply force to bird object to compensate gravity force, but if I do this strictly, it looks very unnatural. So could someone provide good description or maybe links to good articles about such simulation for 3D game?

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    \$\begingroup\$ Having a fully fledged physics-simulation for every bird is a bit overkill; well made and cleverly blended animations plus an accurate ragdoll should do the trick with less headache. Just play the animation and move your bird along a smooth path. Small movements related to flight physics are then done within the animation. \$\endgroup\$ – VaTTeRGeR Oct 4 '15 at 15:05
  • \$\begingroup\$ Maybe applying airplane-like simulation of flight. And animating the wings like birds do? \$\endgroup\$ – rlam12 Oct 4 '15 at 16:37
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    \$\begingroup\$ This question could be improved by explaining what you've tried, why it looked unnatural, and exactly what aspects of a bird's flight you want to simulate (aerodynamics, wing movement, internal forces…). Preferably one of them, to keep the question answerable in less than a textbook. \$\endgroup\$ – Anko Oct 6 '15 at 8:55
  • \$\begingroup\$ I wanted to do it myself recently and I could only find some really long, detailed but very complicated equations for bird flight in this paper: Forward flight of birds revisited. Part 1: aerodynamics and performance I've also just seen a paper for animal-like flight by machine learning: Aerobatics Control of Flying Creatures via Self-Regulated Learning. If you can find anything related to 3D physics or game programming I would be also interested. \$\endgroup\$ – Gábor Fekete May 16 at 12:39

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