Class: EnemyBoss

EnemyBoss(game, fleet, bombFactory, startX, startY, direction, id)

Enemy Boss - has more hitPoints, higher score and different image. Extends the standard EnemyShip

Constructor

new EnemyBoss(game, fleet, bombFactory, startX, startY, direction, id)

Create an enemy boss ship.
Parameters:
Name Type Description
game SpaceInvaders The current game.
fleet EnemyFleet Factory that created this instance.
bombFactory EnemyBombFactory Factory to create enemy bombs.
startX number Starting X position.
startY number Starting Y position.
direction number Direction ship is moving.
id string Unique DOM ID.
Author:
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Extends

Methods

kill()

Kills the enemy ship and starts the death animation loop, updates Score.
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move()

Process the movememnt logic - Move till edge, move down for 25 frames, move back other direction.
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startBombCountdown()

Reset the bomb counter to a random number, drops 1 each game loop. When it reaches 0 the update loop will trigger a new bomb to be created from the EnemyBombFactory.
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update() → {boolean}

Main update loop called every animation frame. Dying - If the ship is dying rotate and shrink it until width < 5 Hit Points - If < 0 start the dying process Bomb launch - Check the countdown and if < 0 make new bomb Collision detection - player ship and shieldblock
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Returns:
Success or failure.
Type
boolean