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Games: Add Hearts

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Gunnar Beutner 2021-05-20 14:27:58 +02:00 • committed by Andreas Kling
parent 3e47eec862
commit c3efae85f2
15 changed files with 965 additions and 1 deletions
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118
Userland/Games/Hearts/Player.cpp Normal file
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/*
* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "Player.h"
#include "Helpers.h"
namespace Hearts {
size_t Player::pick_low_points_low_value_card()
{
int min_points = -1;
int min_value = -1;
int card_index = -1;
for (size_t i = 0; i < hand.size(); i++) {
auto& card = hand[i];
if (card.is_null())
continue;
auto points = hearts_card_points(*card);
auto value = hearts_card_value(*card);
if (min_points != -1 && (points > min_points || static_cast<int>(value) > min_value))
continue;
min_points = points;
min_value = static_cast<int>(value);
card_index = i;
}
VERIFY(card_index != -1);
return card_index;
}
Optional<size_t> Player::pick_low_points_high_value_card(Optional<Card::Type> type)
{
int min_points = -1;
Optional<size_t> card_index;
for (ssize_t i = hand.size() - 1; i >= 0; i--) {
auto& card = hand[i];
if (card.is_null())
continue;
if (type.has_value() && card->type() != type.value())
continue;
auto points = hearts_card_points(*card);
if (min_points == -1 || points < min_points) {
min_points = points;
card_index = i;
}
}
VERIFY(card_index.has_value() || type.has_value());
return card_index;
}
Optional<size_t> Player::pick_lower_value_card(Card& other_card)
{
for (ssize_t i = hand.size() - 1; i >= 0; i--) {
auto& card = hand[i];
if (card.is_null())
continue;
if (card->type() == other_card.type() && hearts_card_value(*card) < hearts_card_value(other_card))
return i;
}
return {};
}
Optional<size_t> Player::pick_slightly_higher_value_card(Card& other_card)
{
for (size_t i = 0; i < hand.size(); i++) {
auto& card = hand[i];
if (card.is_null())
continue;
if (card->type() == other_card.type() && hearts_card_value(*card) > hearts_card_value(other_card))
return i;
}
return {};
}
size_t Player::pick_max_points_card()
{
auto queen_of_spades_maybe = pick_specific_card(Card::Type::Spades, CardValue::Queen);
if (queen_of_spades_maybe.has_value())
return queen_of_spades_maybe.value();
if (has_card_of_type(Card::Type::Hearts))
return pick_last_card();
return pick_low_points_high_value_card().value();
}
Optional<size_t> Player::pick_specific_card(Card::Type type, CardValue value)
{
for (size_t i = 0; i < hand.size(); i++) {
auto& card = hand[i];
if (card.is_null())
continue;
if (card->type() == type && hearts_card_value(*card) == value)
return i;
}
return {};
}
size_t Player::pick_last_card()
{
for (ssize_t i = hand.size() - 1; i >= 0; i--) {
auto& card = hand[i];
if (card.is_null())
continue;
return i;
}
VERIFY_NOT_REACHED();
}
bool Player::has_card_of_type(Card::Type type)
{
auto matching_card = hand.first_matching([&](auto const& other_card) {
return !other_card.is_null() && other_card->type() == type;
});
return matching_card.has_value();
}
}