/**
     * Determines the next action to take.
     *
     * @param battleInfo   State for an ongoing battle.
     * @param onChoice   Callback for when an action is chosen.
     * @see http://wiki.pokemonspeedruns.com/index.php/Pok%C3%A9mon_Red/Blue/Yellow_Trainer_AI
     * @todo Items?
     */
    public nextAction(battleInfo: IBattleInfo, team: Team, onChoice: IOnChoice): void {
        const attackingTeam: IBattleTeam = battleInfo.teams[Team[team]];
        const defendingTeam: IBattleTeam = team === Team.opponent
            ? battleInfo.teams.player
            : battleInfo.teams.opponent;
        const attackingActor: IPokemon = battleInfo.teams[Team[team]].selectedActor;

        // Wild Pokemon just choose randomly
        if (!attackingTeam.leader) {
            onChoice({
                move: this.eightBitter.numberMaker.randomArrayMember(attackingActor.moves).title,
                type: "move",
            });

            return;
        }

        let possibilities: IMovePossibility[] = this.movePriorityGenerator.generate(attackingTeam, defendingTeam, attackingActor.moves);

        // The AI uses rejection sampling on the four moves with ratio 63:64:63:66,
        // with only the moves that are most favored after applying the modifications being acceptable.
        let lowest: number = possibilities[0].priority;
        if (possibilities.length > 1) {
            for (const possibility of possibilities) {
                if (possibility.priority < lowest) {
                    lowest = possibility.priority;
                }
            }

            possibilities = possibilities.filter((possibility: IMovePossibility): boolean =>
                possibility.priority === lowest);
        }

        onChoice({
            move: this.eightBitter.numberMaker.randomArrayMember(possibilities).move,
            type: "move",
        });
    }

 /**
  * Chooses to attempt to flee the battle.
  */
 private attemptToFlee(onChoice: IOnChoice): void {
     onChoice({
         type: "flee",
     });
 }

 onUse: (listing: IInventoryListing): void => {
     onChoice({
         item: listing.item,
         type: "item",
     });
 },

 (): void => {
     onChoice({
         newActor: pokemon,
         type: "switch",
     });
 });