Excelsior/Stellar Starship

The Stellar Starship is a Pre-Hardmode boss. It takes the design of a flying saucer, similarly to the Martian Saucer. The Stellar Starship is not required for further progression. It can be spawned by using a #|Interstellar Remote anywhere. Although the Stellar Starship can be summoned before King Slime, it is recommended to be fought after Skeletron.

Behaviour
The Stellar Starship has 3 different actions it can perform throughout its fight
 * It can rapidly fire missiles towards the nearest player's general direction, getter faster at lower health.
 * It can dash towards the nearest player, increasing from 2 to 4 times in quick succession.
 * It can summon a #|Stellar Drone at its current position and do a small dash forward towards the nearest player.
 * It can move towards the nearest player.
 * It can move slowly towards the nearest player while shooting missiles.