Constructor
new hudKillstreak(game, player)
    Create the accuracy hud component.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| game | SpaceInvaders | The current game. | 
| player | PlayerShip | The current player ship. | 
- Source:
Extends
Methods
update() → {boolean}
    Update the content of the killstreak DOM element 
.
- Overrides:
- Source:
Returns:
    Success or failure.
- Type
- boolean