setRotation(min, max) → {

gravity : number Sets the body.gravity.y of each particle sprite to this value on launch.

setAllChildren(key, value, checkAlive, checkVisible, operation,

enableBody : boolean If true all Sprites created by, or added to this group, will have a physics body enabled on them. If

replace(oldChild, newChild) → {any} Replaces a child of this Group with the given newChild. The

forEachExists(callback, callbackContext, args) Call a function on each existing child in this group.

countDead() → {integer} Get the number of dead children in this group. Returns

lifespan : number How long each particle lives once it is emitted in ms. Default is 2 seconds. Set lifespan to 'zero' for particles

angle : number The angle of rotation of the group container, in degrees. This adjusts the group itself by modifying its

area : Phaser.Rectangle The area of the emitter