Difference between revisions of "ParticleSystem:emit"

m (Add link to getter of buffer size.)
m (Spawn a bunch of particles)
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== Examples ==
 
== Examples ==
 
=== Spawn a bunch of particles ===
 
=== Spawn a bunch of particles ===
This example will create a burst of particles when the spacebar is pressed. You can use the [https://www.love2d.org/w/images/9/9b/Love-game-logo-256x256.png löve logo] as an example image.
+
This example will create a burst of particles when the spacebar is pressed. You can use the [[:File:Love-game-logo-256x256.png|löve logo]] as an example image.
 
<source lang="lua">
 
<source lang="lua">
 
function love.load()
 
function love.load()
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end
 
end
 
</source>
 
</source>
 +
 
== See Also ==
 
== See Also ==
 
* [[parent::ParticleSystem]]
 
* [[parent::ParticleSystem]]

Revision as of 09:09, 2 October 2016

Available since LÖVE 0.9.0
This function is not supported in earlier versions.

Emits a burst of particles from the particle emitter.

Function

Synopsis

ParticleSystem:emit( numparticles )

Arguments

number numparticles
The amount of particles to emit. The number of emitted particles will be truncated if the particle system's max buffer size is reached.

Returns

Nothing.

Examples

Spawn a bunch of particles

This example will create a burst of particles when the spacebar is pressed. 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:setLinearAcceleration(-5, -5, 50, 100); -- Randomized movement towards the bottom of the screen.
	psystem:setColors(255, 255, 255, 255, 255, 255, 255, 0); -- Fade to black.
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

function love.keypressed(key)
	if key == ' ' then
		psystem:emit(32)
	end
end

See Also


Other Languages