how to make nice stars sparkles ?

Gymbyl Coding
#1

Hi Team,

Is it possible to show nice stars sparkles. I want to show it at the end of the game to celebrate the result.

Thanks

Abdul

#2

Yep, it’s completely possible. Basically, you just create particles that don’t move and alpha them in and out.

Here’s a simple example:

[lua]

local math_random = math.random

local display_newImageRect = display.newImageRect

local vent = CBE.newVent({

radius = 120,

lifeSpan = 500,

fadeInTime = 200,

startAlpha = 0,

perEmit = 3,

emitDelay = 100,

color = {255, 255, 0},

build = function()

local size = math_random(30, 60)

return display_newImageRect(“CBEffects/textures/glow.png”, size, size)

end,

physics = {

velocity = 0 – Not moving

}

})

vent:start()

[/lua]

You’ll no doubt want to change the image to a sparkle image, and maybe the positionType to a rectangle, but that’s the basic idea.

  • Caleb
#3

By the way, I just added the sparkle effect to the samples in the CBEffects repository (samples/ExampleEffects/Sparkle.lua) :slight_smile:

  • Caleb
#4

Thanks Man for your quick response to this matter, i really appreciate that… :slight_smile:

Abdul

#5

No problem :slight_smile:

  • Caleb
#6

Yep, it’s completely possible. Basically, you just create particles that don’t move and alpha them in and out.

Here’s a simple example:

[lua]

local math_random = math.random

local display_newImageRect = display.newImageRect

local vent = CBE.newVent({

radius = 120,

lifeSpan = 500,

fadeInTime = 200,

startAlpha = 0,

perEmit = 3,

emitDelay = 100,

color = {255, 255, 0},

build = function()

local size = math_random(30, 60)

return display_newImageRect(“CBEffects/textures/glow.png”, size, size)

end,

physics = {

velocity = 0 – Not moving

}

})

vent:start()

[/lua]

You’ll no doubt want to change the image to a sparkle image, and maybe the positionType to a rectangle, but that’s the basic idea.

  • Caleb
#7

By the way, I just added the sparkle effect to the samples in the CBEffects repository (samples/ExampleEffects/Sparkle.lua) :slight_smile:

  • Caleb
#8

Thanks Man for your quick response to this matter, i really appreciate that… :slight_smile:

Abdul

#9

No problem :slight_smile:

  • Caleb
#10

Hi @Caleb P,

Is there any way to achieve glow effect on outside borders of an image by using graphical effects in corona?

Thanks in advance :slight_smile:

#11

If you know the edges of the image, you should be able to make particles appear at them. Then, scale/fade/whatever your particles. Know, however, that that’s not going to look like a “real” glow: for that, you should probably use snapshots and a bloom filter. If you’re looking for that, it would be best to post a new topic in the graphics subforum.

  • Caleb
#12

Hi @Caleb P,

Thank you for your answer, yeah i open another topic and got very good solutions,

but still what i am looking for seems to be complicated, because my image is red and i want the edges glow to be thick dark yellow that fades after to white. Bloom filter creates a black/white shadow

Regards

#13

Hi @Caleb P,

Is there any way to achieve glow effect on outside borders of an image by using graphical effects in corona?

Thanks in advance :slight_smile:

#14

If you know the edges of the image, you should be able to make particles appear at them. Then, scale/fade/whatever your particles. Know, however, that that’s not going to look like a “real” glow: for that, you should probably use snapshots and a bloom filter. If you’re looking for that, it would be best to post a new topic in the graphics subforum.

  • Caleb
#15

Hi @Caleb P,

Thank you for your answer, yeah i open another topic and got very good solutions,

but still what i am looking for seems to be complicated, because my image is red and i want the edges glow to be thick dark yellow that fades after to white. Bloom filter creates a black/white shadow

Regards