Particle effect example - fire and smoke

This example shows a simple particle effect for imitating fire and smoke using two emitters and 3 modifiers in a single particlefx component.

Project files

Setup

The Particle Effect consists of two emitters: for fire and smoke. Each of them has tweaked properties. All combined creates a fire and smoke effect. There are also modifiers.

Both emitter use a simple radial gradient blob image from sprites.atlas. Fire emitter is in front, because its Z position is 0.1, while smoke is at Z position equal to 0.

There are two modifiers that affect both emitters:

• Acceleration with Magnitude 70 +/- 10
• Radial with Magnitude: -30 +/- 40 positioned at Y = 150

Fire emitter has one additional modifier:

• Vortex with Magnitude 0 +/- 50 - simulating random fluctuations of the fire effect.

Fire properties

Changed properties (from default):

• Blend Mode: Alpha (for transparency blending)
• Max Particle Count: 128
• Emitter Type: Circle
• Spawn Rate: 35 +/- 10
• Emitter Size X: 100 +/- 20 (for circle emitters only Emitter Size X is taken into account, as radius)
• Initial Speed: 30 +/- 20
• Initial Size: 80 +/- 10
• Initial Red: 1.0
• Initial Green: 0.5 +/- 0.1
• Initial Blue: 0.1
• Initial Alpha: 0.8 +/- 0.2 (for a little transparency)
• Initial Rotation: 180 (to make flame sprite upside down)

Additionally, the curves for Life Scale, Life Red, Life Green, and Life Alpha properties were adjusted:

Smoke properties

Smoke emitter has a smoke animation from sprites.atlas.

It has two modifiers:

• Acceleration with Magnitude 20 +/- 10
• Radial with Magnitude: -40 +/- 20 positioned at Y = 150

Changed properties (from default):

• Position, Y: 60 (to emit a little bit above the fire)
• Start Delay: 0.5 +/- 0.3 (to start a little bit after fire)
• Blend Mode: Alpha (for transparency blending)
• Max Particle Count: 32
• Emitter Type: Circle
• Spawn Rate: 8 +/- 2
• Emitter Size X: 30 +/- 10 (for circle emitters only Emitter Size X is taken into account, as radius)
• Particle Life Time: 5 +/- 0
• Initial Speed: 10 +/- 10
• Initial Size: 40 +/- 20
• Initial Alpha: 0.5 +/- 0.3 (for a lot of transparency)
• Initial Rotation: 0 +/- 90 (to make intial rotation of smoke sprite random)

Additionally, the curves for Life Scale, Life Red, Life Green, Life Alpha and Life Alpha properties were adjusted:

The collection contains just a single game object with “particles” particlefx component and the script.

Scripts

fire_and_smoke.script

function init(self)
	particlefx.play("#particles") -- <1>
end

--[[
1. Start playing the particle effect in component "particles" in this game object.
--]]