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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\Player\PlayerAction; |
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use AardsGerds\Game\Shared\Dice; |
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use AardsGerds\Game\Shared\IntegerValueException; |
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final class Clash |
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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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public static function invoke( |
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Fighter $attacker, |
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Fighter $target, |
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Attack $attack, |
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PlayerAction $playerAction, |
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): void { |
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if (self::blockOccurred($attacker, $target, $attack)) { |
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$playerAction->tell("{$attacker->getName()} uses {$attack}, but {$target->getName()} has blocked this attack."); |
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return; |
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} |
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$damage = self::calculateDamage($attacker, $attack); |
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try { |
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$target->getHealth()->decreaseBy($damage); |
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} catch (IntegerValueException $exception) { |
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$playerAction->tell("{$attacker->getName()} uses {$attack} and deals {$damage} damage, which brings opponent to their knees!"); |
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throw $exception; |
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} |
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$playerAction->tell("{$attacker->getName()} uses {$attack} and deals {$damage} damage."); |
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} |
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private static function calculateDamage( |
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Fighter $attacker, |
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Attack $attack, |
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): Damage { |
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return match (true) { |
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$attack instanceof MeleeAttack => |
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(new Damage(0)) |
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->increaseBy($attack->getDamage($attacker->getWeapon() ?? throw FightException::weaponRequired())) |
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->increaseBy($attacker->getStrength()), |
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$attack instanceof EtherumAttack => $attack->getDamage(), |
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$attack instanceof NaturalAttack => |
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(new Damage(0)) |
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->increaseBy($attack->getDamage()) |
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->increaseBy($attacker->getStrength()), |
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default => new Damage(0), |
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}; |
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} |
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private static function blockOccurred( |
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Fighter $attacker, |
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Fighter $target, |
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Attack $attack, |
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): bool { |
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return Dice::roll(Block::calculateChance($attacker, $target, $attack)); |
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} |
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} |
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Assasz /
aards-gerds
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