How do I get the movement pattern of bullet hell games?

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Post » Mon Feb 29, 2016 1:29 pm

I've been struggling for some time trying to find specific tutorials about the mathematics and coding involved in the spreading patterns of particles/sprites/bullets/enemies in this type of games like touhou series, but without any luck. Any help is appreciated.

some examples who may apply for what I'm looking to achieve.

https://www.youtube.com/watch?v=WdoF0iayjvs

https://www.youtube.com/watch?v=xbQ9e0zYuj4

https://www.youtube.com/watch?v=PMID2Ph6Zvg

https://vimeo.com/126033836
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Post » Mon Feb 29, 2016 2:45 pm

I believe it's not too hard when you understand how to utilize loop. A Bullet usually move in one direction at certain angle. So a swarm of bullet spread from one point to point. Same principle with 'seeking bullet' too, only the angle of motion were updated each time.

I should make an example though, maybe tomorrow.
Here an example already exist:
https://dl.dropboxusercontent.com/u/659 ... aving.capx
https://dl.dropboxusercontent.com/u/659 ... ssile.capx
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Post » Mon Feb 29, 2016 8:05 pm

thank you for the answear, but it is still unclear how can I rotate, mix, multiply and work with reflectors in many ways, controlling everything from mathematical equations like the Fourier Transform, dragon curve, golden ratio, sorting and even fractals.
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Post » Mon Feb 29, 2016 10:23 pm

Here an example :

Image

https://dl.dropboxusercontent.com/u/659 ... ttern.capx

See my posting below to get an idea how to reflecting bullet:
viewtopic.php?f=180&t=164607&p=996119&hilit=bubble+shoot#p996119
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Post » Mon Feb 29, 2016 11:38 pm

thanks, cheking your example and post as well!
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