trackPointer(pointer, offsetX, offsetY) → {Phaser.Weapon}
Sets this Weapon to track the given Pointer.When a Weapon tracks a Pointer it will automatically update its fireFrom value to match the Pointersposition within the Game World, adjusting the coordinates based on the offset arguments. This allows you to lock a Weapon to a Pointer, so that bullets are always launched from its location. Calling trackPointer will reset Weapon.trackedSprite to null, should it have been set, as you canonly tr