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#include "game.h"
#include<iostream>
#include<time.h>
#include<cmath>
void game::generateNumber() {
srand(time(NULL));
number = rand() % 100 + 1;
}
void game::validateBet(double& bet, double currentMoney) const {
std::cout << "How much money would you like to bet? " << std::endl
<< "Your money now: " << currentMoney << std::endl;
bool fail = false;
do {
if (fail)
std::cout << "Invalid input" << std::endl;
std::cin >> bet;
fail = true;
// Проверява дали сме въвели текстов низ вместо число
// и поправя потока.
if (!(bool)(std::cin)) {
std::cin.clear();
std::cin.ignore(255, '\n');
}
} while (bet > currentMoney || bet < 0);
}
void game::validateNumber(int& num) const {
std::cout << "Enter your number: ";
bool fail = false;
do {
if (fail)
std::cout << "Try again" << std::endl;
std::cin >> num;
if (!(bool)(std::cin)) {
std::cin.clear();
std::cin.ignore(255, '\n');
}
fail = true;
} while (num < 20 || num > 60);
}
double game::getRate(betType currentBet) const {
double rate = 0;
int myNumber = 0;
switch (currentBet) {
case betType::isEven:
rate = !(number % 2) ? 0.2 : -1;
break;
case betType::isNotEven:
rate = !(number % 2) ? -1 : 0.2;
break;
case betType::isPrime:
rate = isPrime(number) ? 0.5 : -1;
break;
case betType::isPowerOfTwo:
rate = isPowerOfTwo(number) ? 1 : -1;
break;
case betType::isBiggerThan:
validateNumber(myNumber);
rate = (myNumber > number) ? 0.25 : -1;
break;
case betType::isSmallerThan:
validateNumber(myNumber);
rate = (myNumber < number) ? 0.25 : -1;
break;
case betType::isTheSameAs:
validateNumber(myNumber);
rate = (myNumber == number) ? 10 : -1;
break;
}
return rate;
}
void game::play(player& p) {
if (p.getAge() < 18) {
std::cout << "You are too young" << std::endl;
return;
}
char buff[20];
std::cout << "Enter your password, " << p.getName() << ": ";
std::cin.getline(buff, 20, '\n');
if (!p.comparePassword(buff)) {
std::cout << "Wrong password. Goodbye.";
return;
}
while (!p.isBroke()) {
double myBet = 0;
betType currentBet = p.makeBet();
generateNumber();
validateBet(myBet, p.getMoney());
p.updateMoney(myBet, getRate(currentBet));
std::cout << "The number was: " << number << std::endl;
}
std::cout << "You lost all your money!" << std::endl;
}
// Bonus:
// https://math.mit.edu/~stevenj/18.335/newton-sqrt.pdf
double newtonSquareRoot(double num, int l = 100) {
double result = 1;
double temp = 1;
for (int i = 0; i < l; i++) {
temp = 0.5 * (result + num / result);
if (temp == result && result != 1)
return result;
result = temp;
}
return result;
}
bool isPrime(int num) {
// int border = sqrt(num); is fine
int border = newtonSquareRoot(num);
for (int i = 2; i <= border; i++)
if (num % i == 0)
return false;
return true;
}
bool isPowerOfTwo(int num) {
return num != 0 && ((num & (num - 1)) == 0);
}
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