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<?php |
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declare(strict_types=1); |
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namespace AardsGerds\Game\Fight; |
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use AardsGerds\Game\Build\Attribute\Damage; |
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use AardsGerds\Game\Build\Attribute\Health; |
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use AardsGerds\Game\Inventory\Usable; |
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use AardsGerds\Game\Player\Player; |
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use AardsGerds\Game\Player\PlayerAction; |
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use AardsGerds\Game\Player\PlayerException; |
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use AardsGerds\Game\Shared\IntegerValue; |
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use AardsGerds\Game\Shared\IntegerValueException; |
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use function Lambdish\Phunctional\map; |
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use function Lambdish\Phunctional\not; |
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final class Fight |
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{ |
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private IntegerValue $round; |
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public function __construct( |
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private Player $player, |
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private FighterCollection $opponents, |
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private PlayerAction $playerAction, |
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) { |
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$this->round = new IntegerValue(1); |
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} |
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public function __invoke(): void |
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{ |
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while ($this->opponents->count() > 0) { |
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$fighters = new FighterCollection( |
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array_merge([$this->player], $this->opponents->getItems()), |
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); |
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$this->playerAction->newRound("Round {$this->round}:"); |
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$this->playerAction->list(map( |
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static fn(Fighter $fighter) => [$fighter->getName() => "{$fighter->getHealth()} health"], |
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$fighters, |
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)); |
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try { |
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foreach ($fighters->order() as $fighter) { |
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$this->action($fighter); |
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} |
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} catch (IntegerValueException $exception) { |
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$isDead = static fn(Fighter $fighter): bool => $fighter->getHealth()->isLowerThan(new Health(1)); |
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if ($isDead($this->player)) { |
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throw PlayerException::death(); |
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} |
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$this->opponents = $this->opponents->filter(not($isDead)); |
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} |
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$this->round->increment(); |
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} |
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} |
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/** |
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* @throws IntegerValueException if target's health hits 0 |
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*/ |
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private function action(Fighter $fighter): void |
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{ |
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if ($fighter instanceof Player) { |
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$action = $this->askForAction(); |
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if ($action instanceof Usable) { |
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$action->use($fighter, $this->playerAction); |
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return; |
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} |
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} else { |
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$action = $fighter->getTalents()->filterAttacks()->getIterator()->current(); |
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} |
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$damage = $this->calculateDamage($action, $fighter); |
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try { |
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$this->findOpponent($fighter)->getHealth()->decreaseBy($damage); |
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} catch (IntegerValueException $exception) { |
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$this->playerAction->tell("{$fighter->getName()} uses {$action} and deals {$damage} damage, which brings opponent to their knees!"); |
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throw $exception; |
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} |
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$this->playerAction->tell("{$fighter->getName()} uses {$action} and deals {$damage} damage."); |
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} |
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private function askForAction(): Attack|Usable |
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{ |
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$action = $this->playerAction->askForChoice( |
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'Select action', |
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array_merge($this->player->getTalents()->filterAttacks()->getItems(), ['Go to inventory']), |
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); |
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if ($action === 'Go to inventory') { |
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$selectedItem = $this->playerAction->askForChoice( |
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'Select item to use', |
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array_merge($this->player->getInventory()->filterUsable()->getItems(), ['Back']), |
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); |
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if ($selectedItem === 'Back') { |
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return $this->askForAction(); |
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} |
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return $selectedItem; |
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} |
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if ($action instanceof MeleeAttack && $this->player->getWeapon() === null) { |
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$this->playerAction->note('This attack requires weapon equipped.'); |
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return $this->askForAction(); |
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} |
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return $action; |
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} |
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private function findOpponent(Fighter $fighter): Fighter |
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{ |
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if ($fighter instanceof Player) { |
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return $this->opponents->count() > 1 |
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? $this->playerAction->askForChoice('Select opponent to attack', $this->opponents->getItems()) |
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: $this->opponents->getIterator()->current(); |
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} |
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return $this->player; |
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} |
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private function calculateDamage(Attack $attack, Fighter $fighter): Damage |
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{ |
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return match (true) { |
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$attack instanceof MeleeAttack => |
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$attack->getDamage($fighter->getWeapon() ?? throw FightException::weaponRequired()) |
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->increaseBy($fighter->getStrength()), |
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$attack instanceof EtherumAttack => $attack->getDamage(), |
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default => new Damage(0), |
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}; |
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} |
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} |
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Assasz /
aards-gerds
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