Difference between revisions of "love.graphics.newParticleSystem"
m (Add links.) |
m (Clean up example code) |
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<source lang="lua"> | <source lang="lua"> | ||
function love.load() | function love.load() | ||
− | local img = love.graphics.newImage('logo.png') | + | local img = love.graphics.newImage('logo.png') |
− | psystem = love.graphics.newParticleSystem(img, 32) | + | psystem = love.graphics.newParticleSystem(img, 32) |
− | psystem:setParticleLifetime(2, 5) | + | psystem:setParticleLifetime(2, 5) -- Particles live at least 2s and at most 5s. |
− | psystem:setEmissionRate(5) | + | psystem:setEmissionRate(5) |
− | psystem:setSizeVariation(1) | + | psystem:setSizeVariation(1) |
− | psystem:setLinearAcceleration(-20, -20, 20, 20) | + | psystem:setLinearAcceleration(-20, -20, 20, 20) -- Random movement in all directions. |
− | psystem:setColors(255, 255, 255, 255, 255, 255, 255, 0) | + | psystem:setColors(255, 255, 255, 255, 255, 255, 255, 0) -- Fade to transparency. |
end | end | ||
function love.draw() | function love.draw() | ||
-- Draw the particle system at the center of the game window. | -- Draw the particle system at the center of the game window. | ||
− | love.graphics.draw(psystem, love.graphics.getWidth() * 0.5, love.graphics.getHeight() * 0.5) | + | love.graphics.draw(psystem, love.graphics.getWidth() * 0.5, love.graphics.getHeight() * 0.5) |
end | end | ||
function love.update(dt) | function love.update(dt) | ||
− | psystem:update(dt) | + | psystem:update(dt) |
end | end | ||
</source> | </source> |
Revision as of 11:47, 5 May 2015
Creates a new ParticleSystem.
This function can be slow if it is called repeatedly, such as from love.update or love.draw. If you need to use a specific resource often, create it once and store it somewhere it can be reused! |
Contents
Function
Synopsis
system = love.graphics.newParticleSystem( image, buffer )
Arguments
Returns
ParticleSystem system
- A new ParticleSystem.
Function
Available since LÖVE 0.9.1 |
This variant is not supported in earlier versions. |
Synopsis
system = love.graphics.newParticleSystem( texture, buffer )
Arguments
Texture texture
- The texture (Image or Canvas) to use.
number buffer
- The max number of particles at the same time.
Returns
ParticleSystem system
- A new ParticleSystem.
Examples
Creation and usage of a particle system
You can use the löve logo as an example image.
function love.load()
local img = love.graphics.newImage('logo.png')
psystem = love.graphics.newParticleSystem(img, 32)
psystem:setParticleLifetime(2, 5) -- Particles live at least 2s and at most 5s.
psystem:setEmissionRate(5)
psystem:setSizeVariation(1)
psystem:setLinearAcceleration(-20, -20, 20, 20) -- Random movement in all directions.
psystem:setColors(255, 255, 255, 255, 255, 255, 255, 0) -- Fade to transparency.
end
function love.draw()
-- Draw the particle system at the center of the game window.
love.graphics.draw(psystem, love.graphics.getWidth() * 0.5, love.graphics.getHeight() * 0.5)
end
function love.update(dt)
psystem:update(dt)
end
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