71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
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#include "hands.h"
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#include <chrono>
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#include <iostream>
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#include <memory>
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#include <random>
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#include <cstdlib>
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std::unique_ptr<Hand> Hand::fromChar(const char letter) {
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switch (letter) {
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case 'R':
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case 'r':
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return std::make_unique<Rock>();
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case 'P':
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case 'p':
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return std::make_unique<Paper>();
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case 'S':
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case 's':
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return std::make_unique<Scissors>();
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default:
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std::cout << "Invalid choice" << std::endl;
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std::exit(1);
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}
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}
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std::unique_ptr<Hand> Hand::generateRandom() {
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std::mt19937 mt(
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std::chrono::steady_clock::now().time_since_epoch().count());
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std::uniform_int_distribution<int> intDist(0, 2);
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switch (intDist(mt)) {
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case 0:
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return std::make_unique<Rock>();
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case 1:
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return std::make_unique<Paper>();
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case 2:
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return std::make_unique<Scissors>();
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default:
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std::cerr << "An invalid random number was generated, this should be impossible" << std::endl;
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std::exit(1);
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}
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}
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// List of function implementations for all of the different types of Hand
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std::string Rock::getHandName() const { return "rock"; }
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GameResult Rock::compareAgainst(const Hand &other) {
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const std::string otherName = other.getHandName();
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if (otherName == "rock") return GameResult::Tie;
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if (otherName == "scissors") return GameResult::Win;
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else return GameResult::Loss;
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}
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std::string Paper::getHandName() const { return "paper"; }
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GameResult Paper::compareAgainst(const Hand &other) {
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const std::string otherName = other.getHandName();
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if (otherName == "paper") return GameResult::Tie;
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if (otherName == "rock") return GameResult::Win;
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else return GameResult::Loss;
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}
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std::string Scissors::getHandName() const { return "scissors"; }
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GameResult Scissors::compareAgainst(const Hand &other) {
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const std::string otherName = other.getHandName();
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if (otherName == "scissors") return GameResult::Tie;
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if (otherName == "paper") return GameResult::Win;
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else return GameResult::Loss;
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}
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