binmat/doMoveDraw.js

binmat simulator

import { shuffle } from "@samual/lib/shuffle"
import { StatusCode, Role, AttackerDeck, AttackerDiscardPile } from "./shared.js"
function doMoveDraw(state, deckToDrawFrom) {
	if (state.turn >= state.turns) return { status: StatusCode.MadeMoveOnFinishedGame }
	const roleTurn = (state.turn % 2) + 1
	if (roleTurn == Role.Defender) {
		if (deckToDrawFrom == AttackerDeck) return { status: StatusCode.DefenderDrewFromAttackerDeck }
	} else if (deckToDrawFrom != AttackerDeck && state.defenderStacks[deckToDrawFrom].cards.length)
		return { status: StatusCode.AttackerDrewFromBlockedLane }
	const deck = deckToDrawFrom == AttackerDeck ? state.attackerDeck : state.laneDecks[deckToDrawFrom]
	if (!deck.length) {
		const discardPile =
			deckToDrawFrom == AttackerDiscardPile ? state.attackerDiscardPile : state.laneDiscardPiles[deckToDrawFrom]
		if (!discardPile.length)
			return deckToDrawFrom == AttackerDeck ?
					{ status: StatusCode.AttackerDrewFromEmptyDiscardAndDeck }
				:	{ status: StatusCode.AttackerWin }
		deck.push(...shuffle(discardPile.splice(0)))
	}
	const cardDrawn = deck.pop()
	return (
		roleTurn == Role.Defender ? state.defenderHand.push(cardDrawn) : state.attackerHand.push(cardDrawn),
		state.turn++,
		state.turn == state.turns ?
			{ status: StatusCode.DefenderWin, cardDrawn: cardDrawn }
		:	{ status: StatusCode.Ok, cardDrawn: cardDrawn }
	)
}
export { doMoveDraw }