wm: mmind

ref: c25c807edfd4d1947581f89d95774a5e553dc371
dir: /game.cpp/

/*
	Mastermind impl.

	todo:
	fix XXXs in code,
*/

#include <iostream>

using namespace std;

// io functions
void printrules();
uint getlen();
uint getguess();
void compere(uint goal, uint guess);

// aux functions
uint length(uint n);
uint gengoal(uint n);
int digit(int number, int index);

void printrules()
{
	cout << "Hi," << endl;
}

uint getlen()
{
	int len;
	/* hopefully not long */
	cout << "how long? " << endl;
	cin >> len;
	while(len < 1)
	{
		cerr << "Sorry, please enter a 1+ number" << endl;
		len = getlen();
	}
	return len;
}

uint getguess()
{
	/* "sang bozorg neshane nazadan ast" */
	char guess[512];
	int i = 0, temp = 0;
	cout << "guess? " << endl;
	cin >> guess;
	while(guess[i] != '\0')
	{
		/* see if it's either a number or space,
		SCREAM loudly otherwise! */
		if((guess[i] >= '0') && (guess[i] <= '9'))
		{
			/* because	we can't put ascii into int directly */
			temp = (guess[i] - '0') + temp;
			temp *= 10;
		}

		else if(guess[i] != ' ')
		{
			cerr << "That's not a number" << endl;
			return getguess();
		}	
	}
	return temp;
}

uint length(uint n)
{
	uint t = 0;
	while(n > 0)
	{
		n /= 10;
		t++;
	}
	return t;
}

/* generates an uint, with n digits,
	used to make a goal */
uint gengoal(uint n)
{
	uint num = 0;
	/* it's technically legal, but
	we get a int that's shorter than n */
	do
        num = rand() % 10;
    while (num == 0)

	while(n > 0)
	{
		num *= 10;
		num += rand()%10;
		n--;
	}
	return num;
}

/* we could also use arrays for this,
	alas, that would a can of worms 
	digit(number, index) = number[index] */
int digit(int number, int index)
{
	if((index > length(number)) || (index < 0))
		return -1;

	int i = 0, j;
	while(i < index)
	{
		j = number % 10;
		number /= 10; 
		i++;
	}
	return j;
}

void compere(uint goal, uint guess)
{
	int i = 0;
	while(i < length(goal))
	{
		if(digit(goal, i) == digit(guess, i))
			cout << '#';
		else
			cout << 'X';
		i++;
	}
}

int main()
{
	uint len, goal;
	printrules();
	len = getlen();
	goal = gengoal(len);
	cout << len << endl;
	cout << goal << endl;
}