Again, I need a help. I need rain animation or effect. Is there any variants for free? My project has little budget and add-ons like ParticleCandy are so expensive for me.
Thank you.
P.S. I’m Android developer. [import]uid: 99327 topic_id: 17093 reply_id: 317093[/import]
take a look at the code sharing section. you can find some examples here how to handle particles. I added a simple particle system myself, take a look. you should get the idea:
http://developer.anscamobile.com/code/simple-particle-explosion
-finefin [import]uid: 70635 topic_id: 17093 reply_id: 64245[/import]
canupa.com thank you so much! It is really good free variant for me. But how to activate particles, for example when touching object?
Yes, I’m newbie. [import]uid: 99327 topic_id: 17093 reply_id: 64248[/import]
try and evaluate Jeff’s GrafittiParticleSystem, that might be slightly more in your budget in comparison to Particle Candy.
cheers,
?
[import]uid: 3826 topic_id: 17093 reply_id: 64249[/import]
kingko96, what I’ve done is the simpliest approach, I guess. If you need something more powerful, use the module JayantV suggested.
as for your question: call
explosion (theX, theY) to emit particles at the x/y coordinates you send as parameters.
If you need a running example, try this http://developer.anscamobile.com/code/simple-particle-explosion#comment-42115
-finefin
[import]uid: 70635 topic_id: 17093 reply_id: 64252[/import]
I understand that, but how to loop them, so they can go from up part of screen like rain falling. Should I use static invisible object from which these particles will generate? [import]uid: 99327 topic_id: 17093 reply_id: 64254[/import]
@kingko96,
you can attempt this by yourself, however since you are starting out, I would recommend that you try a proven library that does what you want. This is just a suggestion, the decision is till yours.
See if you can understand this,
What you are after is called a particle emitter. The way it functions is it like a tap, once you turn it on, it keeps emitting particles, and when you turn it off, it stops. So that is how it loops.
There are lots of sites that will offer you information on how to make a particle emitter, then it is all about adapting that to Corona.
Hope that helped,
cheers,
? [import]uid: 3826 topic_id: 17093 reply_id: 64255[/import]
I don’t know… I recommend to use a simple implementation first.
Instead of a “black box”-module you should learn the principles, then you can go on implementing 3rd party stuff. but maybe it’s just my way of learning – as JayantV wrote: you decide.
however, take my example, but instead of using an onTouch event,
use an enterFrame loop:
-- THE EXPLOSION FUNCTION
local particles = {} -- particle table
local function explosion (theX, theY, blood) -- blood is BOOL
local particleCount = 3 -- number of particles per explosion
for i = 1, particleCount do
local theParticle = {}
theParticle.object = display.newRect(theX,theY,3,3)
if blood == true then
theParticle.object:setFillColor(250,0,0)
end
theParticle.xMove = math.random (10) - 5
theParticle.yMove = math.random (5) \* - 1
theParticle.gravity = 0.5
table.insert(particles, theParticle)
end
end
-- PARTICLES MOVING
function animation ()
for i,val in pairs(particles) do
-- move each particle
val.yMove = val.yMove + val.gravity
val.object.x = val.object.x + val.xMove
val.object.y = val.object.y + val.yMove
-- remove particles that are out of bound
if val.object.y \> display.contentHeight or val.object.x \> display.contentWidth or val.object.x \< 0 then
val.object:removeSelf();
particles [i] = nil
end
end
end
-- NO TOUCH! enter frame!
function emitter ()
local rndX = math.random (display.contentWidth)
explosion (rndX, -100)
end
Runtime:addEventListener( "enterFrame", animation)
Runtime:addEventListener( "enterFrame", emitter )
you should tweak the animation function to make it look like rain. right now it looks quite chaotic because the effect is based on explosions…
-finefin [import]uid: 70635 topic_id: 17093 reply_id: 64263[/import]