Difference between revisions of "ParticleSystem:emit"

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=== Arguments ===
 
=== Arguments ===
{{param|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.}}
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{{param|number|numparticles|The amount of particles to emit. The number of emitted particles will be truncated if the particle system's max [[ParticleSystem:getBufferSize|buffer size]] is reached.}}
 
=== Returns ===
 
=== Returns ===
 
Nothing.
 
Nothing.

Revision as of 20:45, 6 January 2015

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


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