https://github.com/berengma/aerotest

aerotest - an eagle mob for mobkit api and minetest
https://github.com/berengma/aerotest

eagle minetest-mod mob mobkit

Last synced: 23 days ago
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aerotest - an eagle mob for mobkit api and minetest

• Host: GitHub
• URL: https://github.com/berengma/aerotest
• Owner: berengma
• License: lgpl-2.1
• Created: 2020-01-20T06:00:29.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-04-07T18:35:54.000Z (about 4 years ago)
• Last Synced: 2025-02-26T08:35:14.264Z (over 1 year ago)
• Topics: eagle, minetest-mod, mob, mobkit
• Language: Lua
• Homepage:
• Size: 3.54 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE

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README

          
 

aerotest

King of the sky - eagle a mob for mobkit

implementation:

    it's done using low level behaviors as opposed to plain functions, because pitch/roll changes must be gradual so there's a need to maintain states over time.

    function aerotest.lq_fly_pitch(self,lift,pitch,roll,acc,anim)

        this one tries to maintain constant pitch. Flight looks stable, but the thing can stall and fall if velocity too low. The example uses this one exclusively.

        

    function aerotest.lq_fly_aoa(self,lift,aoa,roll,acc,anim)

        tries to maintain constant angle of attack. makes them less prone to stalling, but they tend to oscillate after abrupt changes of flight parameters. this one's very WIP.

        

    params:

        lift: [number]

        multiplier for lift. faster objects need less, slower need more. typical value: 0.6 for speeds around 4 m/s

        pitch: [degrees]

        angle between the longitudinal axis and horizontal plane. typical range: <-15.15>

        aoa:

        [degrees] angle of attack - the angle between the longitudinal axis and velocity vector.

        roll: [degrees]

        bank angle. positive is right, negative is left, this is how they turn. if set too large they'll loose height rapidly

        acc: [number]

        propulsion. use with positive pitch to make them fly level or climb, set it to 0 with slight negative pitch to make

        them glide. typical value: around 1.0

        anim: [string]

        animation.

The example uses two simple high level behaviors to keep them between 18 and 24 nodes above ground, seems good already for ambient type flying creatures.

warning: never set_velocity when using these behaviors.