#include <iostream>
#include <cstdlib>   //for exit and EXIT_FAILURE
#include <new>       //<new.h> in Microsoft

#include "game.h"
#include "rabbit.h"
#include "wolf.h"
using namespace std;

game::game(char initial_c)
	: term(initial_c)
{
	const unsigned xmax = term.xmax();
	const unsigned ymax = term.ymax();

	struct location {
		unsigned x, y;
	};

	const location a[] = {
		{2 * xmax / 3, 1 * ymax / 4},
		{2 * xmax / 3, 2 * ymax / 4},
		{2 * xmax / 3, 3 * ymax / 4}
	};
	const size_t n = sizeof a / sizeof a[0];

	for (const location *p = a; p < a + n; ++p) {
		new(nothrow) rabbit(this, p->x, p->y);
	}
}

game::~game()
{
	term.put(0, 0, "You killed all the rabbits!");
	term.wait(3000);
}

void game::play()
{
	const unsigned xmax = term.xmax();
	const unsigned ymax = term.ymax();

	wolf w(this, xmax / 3, ymax / 2);

	for (; !master.empty(); term.wait(250)) {
		w.move();

		for (list<rabbit *>::const_iterator it = master.begin();
			it != master.end();) {

			rabbit *const p = *it;
			++it;

			if (!p->move()) {
				delete p;   //calls ~rabbit, which calls master.remove
			}
		}
	}
}

//Return the address of the rabbit at the given location,
//or 0 if there is no rabbit there.

rabbit *game::get(unsigned x, unsigned y) const
{
	for (list<rabbit *>::const_iterator it = master.begin();
		it != master.end(); ++it) {

		rabbit *const p = *it;
		if (p->x == x && p->y == y) {
			return p;
		}
	}

	return 0;
}