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In this Discussion
Clarification for particles
papirosnik
Member
Hi there!
I'm glad to see a new Particles class.
I'm inventing my particle system (with many emitters and particle groups). I intended to use Mesh for particles render purposes, so Particles class is exactly that I need.
But it seems we need more clarification about it.
What is the ttl and what is decay? How they interact and do they interfere each to other? Why they state that ttl is measured in seconds but actually it isn't? In star field example, ttl = 200, but start don't look living neither 200 nor 0.2 sec. Is TTL measured in frames?
Questions, questions and so on...
Maybe, some more detailed post in blog about new features?
I'm glad to see a new Particles class.
I'm inventing my particle system (with many emitters and particle groups). I intended to use Mesh for particles render purposes, so Particles class is exactly that I need.
But it seems we need more clarification about it.
What is the ttl and what is decay? How they interact and do they interfere each to other? Why they state that ttl is measured in seconds but actually it isn't? In star field example, ttl = 200, but start don't look living neither 200 nor 0.2 sec. Is TTL measured in frames?
Questions, questions and so on...
Maybe, some more detailed post in blog about new features?
Comments
Particles are actually at an alpha stage, so API will be upgraded depending on what you think about it after playing a little with them.
ttl is expressed in frames, yes, and decay is a factor applied to speed after each frame: <1, the particle will decelerate, >1 the particle will accelerate.
Those particles doesn't interfere with each others (no physics), use Box2D particles if you need interaction.
Hope this helps!
Likes: antix
It seems too early to use this particles class in real world, just for evalution only...
Some proposals:
- size of particles in pixelsdoesn't look like a good idea.
- a dead particle stays still visible on the stage (as a white pixel). Maybe some event when particle dies? In order to manually remove it.
- it would be nice give us oportunity not only to set hardcoded values but also their boundary values. For examle, setParticleColor() is a nice function, but more convenient would be setParticleColor(from, to) for its entire lifetime. And an interpolation function for changing those values would be a peak of chic )
some other thoughts coming soon... )
Likes: SinisterSoft
I'd love to see Particles develop and would be able to use them in my next game if:
- The slowdown on older devices were addressed
- The quality of bitmap textures were maintained on older devices
Are those two things likely to be addressed? Also welcoming other bug fixes and API improvements of course.
We'll do our best to improve things, though probably not in next release, however I am not sure how to overcome the slowdown (got a few ideas though).
I have already fixed a few obvious/easy bugs for next release, like alpha not taken into account issue.
Likes: totebo