Difference between revisions of "B2.ParticleSystem:createParticleGroup"

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__NOTOC__
 
__NOTOC__
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<languages />
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'''Available since:''' Gideros 2011.6<br/>
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'''<translate>Available since</translate>:''' Gideros 2011.6<br/>
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'''Class:''' [[b2.ParticleSystem]]<br/>
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'''<translate>Class</translate>:''' [[Special:MyLanguage/b2.ParticleSystem|b2.ParticleSystem]]<br/>
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=== <translate>Description</translate> ===
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=== Description ===
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<translate>Create group of multiple particles with same properties, that can be defined in table with:
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Creates a group of multiple particles with the same properties.
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"flags"
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<syntaxhighlight lang="lua">
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"groupFlags"
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b2.ParticleSystem:createParticleGroup(particleGroupDef)
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"position"
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</syntaxhighlight>
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"angle"
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"linearVelocity"
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The possible table properties are:
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"angularVelocity"
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*'''''flags''''': the particle-behavior flags
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"color"
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*'''''groupFlags''''': the group-construction flags
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"alpha"
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*'''''position''''': the world position of the group. Moves the group's shape a distance equal to the value of position
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"strength"
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*'''''angle''''': the world angle of the group in radians. Rotates the shape by an angle equal to the value of angle
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"shape"
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*'''''linearVelocity''''': the linear velocity of the group's origin in world co-ordinates
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"lifetime"</translate>
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*'''''angularVelocity''''': the angular velocity of the group
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<source lang="lua">
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*'''''color''''': the color of all particles in the group
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b2.ParticleSystem:createParticleGroup(particleGoupDef)
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*'''''alpha''''': the alpha of all particles in the group
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</source>
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*'''''strength''''': the strength of cohesion among the particles in a group with flag b2.ParticleSystem.FLAG_ELASTIC or b2.ParticleSystem.FLAG_SPRING
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=== <translate>Parameters</translate> ===
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*'''''shape''''': the shape where particles will be added
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'''particleGoupDef''': (table) <translate>table with particle group data</translate> <br/>
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*'''''lifetime''''': lifetime of the particle group in seconds. A value <= 0.0f indicates a particle group with infinite lifetime
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=== Parameters ===
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'''particleGroupDef''': (table) table with particle group data<br/>
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=== Example ===
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<syntaxhighlight lang="lua">
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require "liquidfun"
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local world = b2.World.new(0, 9.8)
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local shape = b2.PolygonShape.new()
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shape:setAsBox(128, 128)
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local ps = world:createParticleSystem( { radius = 16 } )
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ps:setTexture(Texture.new("gfx/myparticle.png"))
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stage:addChild(ps)
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ps:createParticleGroup({
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shape = shape,
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position = { x = 128, y = 128},
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color = 0xffffff,
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alpha=1,
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flags=b2.ParticleSystem.FLAG_VISCOUS,
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})
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</syntaxhighlight>
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 +
{{B2.ParticleSystem}}

Latest revision as of 05:58, 8 November 2024

Available since: Gideros 2011.6
Class: b2.ParticleSystem

Description

Creates a group of multiple particles with the same properties. 

b2.ParticleSystem:createParticleGroup(particleGroupDef)

The possible table properties are:

  • flags: the particle-behavior flags
  • groupFlags: the group-construction flags
  • position: the world position of the group. Moves the group's shape a distance equal to the value of position
  • angle: the world angle of the group in radians. Rotates the shape by an angle equal to the value of angle
  • linearVelocity: the linear velocity of the group's origin in world co-ordinates
  • angularVelocity: the angular velocity of the group
  • color: the color of all particles in the group
  • alpha: the alpha of all particles in the group
  • strength: the strength of cohesion among the particles in a group with flag b2.ParticleSystem.FLAG_ELASTIC or b2.ParticleSystem.FLAG_SPRING
  • shape: the shape where particles will be added
  • lifetime: lifetime of the particle group in seconds. A value <= 0.0f indicates a particle group with infinite lifetime

Parameters

particleGroupDef: (table) table with particle group data

Example

require "liquidfun"
local world = b2.World.new(0, 9.8)
local shape = b2.PolygonShape.new()
shape:setAsBox(128, 128)
local ps = world:createParticleSystem( { radius = 16 } )
ps:setTexture(Texture.new("gfx/myparticle.png"))
stage:addChild(ps)
ps:createParticleGroup({
	shape = shape,
	position = { x = 128, y = 128},
	color = 0xffffff,
	alpha=1,
	flags=b2.ParticleSystem.FLAG_VISCOUS,
})



LiquidFun

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