69 lines
3.0 KiB
Markdown
69 lines
3.0 KiB
Markdown
# Gameplay description
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Main gameplay cycle is a match of classical `fool` card
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game described here as follows.
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Card is considered `open` when players can see its front face and
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know its suit and value. Otherwise card is considered `closed`.
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Game is played with standard 36-card deck.
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For now we will form gameplay with two players, game user and computer opponent (bot).
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Every player is drawn 6 cards. One card from the rest is laid
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open on the table and denotes a trump suit. Cards with the same suit as
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trump suit card are called trumps. Rest of the cards are
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shuffled and form the deck.
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Players make moves in turns. First move is made by player with lowest
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card of trump suit in his hand. If there's a tie (e.g. no player has trumps),
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player with the lowest card in his hand makes first move. If there's a
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tie, first move is done by random player.
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To make a move player (call him attacking player) chooses one card from his hand and
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lays it open on the table. The next player in clockwise order (we will call him
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defending player) must beat this card. To do so, he chooses from this hand
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a card of same suit and greater value, or a trump. If defending player needs
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to beat a trump, this could be done with a trump only. All cards which are to be
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beaten by defending players we call `attacking cards`.
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All players (including attacking players) can add cards to the attack. Only
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cards with same value as any card laying on the table (initially added for
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attack or used by defending player) can be added.
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* In any move there could be not more than 6 attacking cards (5 cards if it is the first move
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of the game).
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* There should not be more attacking cards than card amount in defending player's
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hand.
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* Cards can be added to attack at any time by any player except defending player.
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If defending player beats all attacking cards and no one wishes to add more,
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the turn end and all cards from attack are discarded. If the defender is unable (or
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just don't want) to beat all cards, he takes all cards from attack to his hand.
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Then, every player (starting
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from attacking player, then in clockwise order except defending player and defending
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player the last) draws cards from deck until they had 6 cards on hand (or the deck is empty).
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The card denoting trump suit is considered last card of the deck in this process.
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After drawing cards move is passed to next player in clockwise order.
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When a player has no cards left (after drawing phase) he leaves the game (all other
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players continue play). When only one player is left he is considered loser of the
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game.
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# Bot logic
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## Basic bot
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When in need to make move, choose non-trump card with least value among all in hand.
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If there is none, choose trump with least value.
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When choosing what to add to attack, add all eligible non-trump cards. Add trump cards
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only when the deck is empty and you have only trump cards in your hands.
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When defending always choose suitable card with least value. Prefer defending with non-trumps
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first, use trumps only when necessary.
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