Transition from the title screen to the summon phase of a new Classic game.
The SpeciesIds to summon; must be between 1-6
A Promise that resolves when the summon phase is reached.
Transition from the title screen to the start of a new Classic Mode battle.
The SpeciesIds with which to start the battle; must be between 1-6
A Promise that resolves when the battle is started.
Queue inputs to switch at the start of the next battle, and then start it.
The 0-indexed position of the party pokemon to switch to.
A Promise that resolves once the battle has been started and the switch prompt resolved.
This will temporarily set the current BattleStyle to SWITCH for the duration
of the CheckSwitchPhase.
Helper to handle classic-mode specific operations.