Phaser.Physics.Spring = function (game, bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB){ 
this.game = game; 
if (typeof restLength === 'undefined') { 
restLength = 1; 
} 
if (typeof stiffness === 'undefined') { 
stiffness = 100; 
} 
if (typeof damping === 'undefined') { 
damping = 1; 
} 
var options = { 
restLength: restLength,
stiffness: stiffness,
damping: damping}
; 
if (typeof worldA !== 'undefined' && worldA !== null ) { 
options.worldAnchorA = [game.math.px2p(worldA[0]), game.math.px2p(worldA[1])] ; 
} 
if (typeof worldB !== 'undefined' && worldB !== null ) { 
options.worldAnchorB = [game.math.px2p(worldB[0]), game.math.px2p(worldB[1])] ; 
} 
if (typeof localA !== 'undefined' && localA !== null ) { 
options.localAnchorA = [game.math.px2p(localA[0]), game.math.px2p(localA[1])] ; 
} 
if (typeof localB !== 'undefined' && localB !== null ) { 
options.localAnchorB = [game.math.px2p(localB[0]), game.math.px2p(localB[1])] ; 
} 
p2.Spring.call(this, bodyA, bodyB, options); 
} 
; 
Phaser.Physics.Spring.prototype = Object.create(p2.Spring.prototype); 
Phaser.Physics.Spring.prototype.constructor = Phaser.Physics.Spring;