B2.ParticleSystem:createParticleGroup

Available since: Gideros 2011.6
Class: b2.ParticleSystem

Description

Creates a group of multiple particles with the same properties. 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

b2.ParticleSystem:createParticleGroup(particleGroupDef)

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,
})

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• B2.ParticleSystem

• B2.ParticleSystem:containsParticle
• B2.ParticleSystem:createParticle
• B2.ParticleSystem:createParticleGroup
• B2.ParticleSystem:destroyParticle
• B2.ParticleSystem:destroyParticles
• B2.ParticleSystem:getColorBuffer
• B2.ParticleSystem:getParticleCount
• B2.ParticleSystem:getParticleGroupList
• B2.ParticleSystem:getPositionBuffer
• B2.ParticleSystem:getVelocityBuffer
• B2.ParticleSystem:getWeightBuffer
• B2.ParticleSystem:setTexture

• B2.ParticleSystem.FLAG BARRIER
• B2.ParticleSystem.FLAG COLOR MIXING
• B2.ParticleSystem.FLAG DESTRUCTION LISTENER
• B2.ParticleSystem.FLAG ELASTIC
• B2.ParticleSystem.FLAG FIXTURE CONTACT FILTER
• B2.ParticleSystem.FLAG FIXTURE CONTACT LISTENER
• B2.ParticleSystem.FLAG PARTICLE CONTACT FILTER
• B2.ParticleSystem.FLAG PARTICLE CONTACT LISTENER
• B2.ParticleSystem.FLAG POWDER
• B2.ParticleSystem.FLAG REACTIVE
• B2.ParticleSystem.FLAG REPULSIVE
• B2.ParticleSystem.FLAG SPRING
• B2.ParticleSystem.FLAG STATIC PRESSURE
• B2.ParticleSystem.FLAG TENSILE
• B2.ParticleSystem.FLAG VISCOUS
• B2.ParticleSystem.FLAG WALL
• B2.ParticleSystem.FLAG WATER
• B2.ParticleSystem.FLAG ZOMBIE

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LiquidFun

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