🔒 these particle thingys (the things drop when enemies die) are kinda jittering

[polar hornet]

what i meant about the particles is when the enemies die

[lost bear]

Click here to see this code in our pastebin.

[lost bear]

@polar hornet

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[polar hornet]

these particle thingys (the things drop when enemies die) are kinda jittering

hi

[ivory plover]

Jitter is a well known issue in particle simulations. I can't debug exactly what's going on, but one solution is to dampen the motion or forces after they have reached a certain threshold and just set velocity and position to 0, etc.

[polar hornet]

did you see the vid

[ivory plover]

yes

[polar hornet]

you saw the enemies die right

[ivory plover]

yes

[polar hornet]

you saw what they drop

[ivory plover]

yes

[polar hornet]

they prob not jittering

lemme double check

i disabled their bounciness and its still the same

btw have you checked the code

[ivory plover]

Like I said, I won't be able to debug this. You'll have to dampen the forces or velocity on the particles after they fall below some threshold value. That is how you remove the jitter.

[polar hornet]

ok wait

[daring wraith]

Your projectiles have damping set at zero

(PhyE.x, PhyE.y), (vx, vy), 0.5, 0.1, 0, (11, 11)),

other than that:

        tile_y = int(PhyD.y // t_size)
        
        PhyD.on_ground = on_tile_ground(PhyD.x, PhyD.y - h_size)
        if PhyD.on_ground:
            
            PhyD.y = tile_y * t_size - h_size

(0, 0) is top left for pygame

this is rounding your Y coordinate upwards, resulting in the snap-bounce effect as it gets smaller

I suggest building in toggleable slomo so you can see the exact behaviors of each step in non-real-time to understand your physics engine better

other tricks you can use is graphing/tracing

Since you know the particles are what is misbehaving, what you can do is keep track of their Y coordinate and dump a list on exit. Then you can load that into matplotlib or similar and you'd see the abrubt square shape of the motion and be able to see what's wrong

[polar hornet]

nvm i fixed it

[lost bear]

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