phaser/examples/particles/rain.js

//	This example was created by Jens Anders Bakke

var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create });

function preload() {

	game.load.image('sky', 'assets/skies/underwater3.png');
	game.load.spritesheet('rain', 'assets/sprites/rain.png', 17, 17);

}

function create() {

	game.add.image(0, 0, 'sky');

	var emitter = game.add.emitter(game.world.centerX, 0, 400);
	emitter.width = game.world.width;
	// emitter.angle = 30; // uncomment to set an angle for the rain.

	emitter.makeParticles('rain');
	emitter.maxParticleScale = 0.5;
	emitter.minParticleScale = 0.1;
	emitter.setYSpeed(300, 500);
	emitter.setXSpeed(-5, 5);
	emitter.minRotation = 0;
	emitter.maxRotation = 0;

	emitter.start(false, 1600, 5, 0);

}