simu_gol.hh
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	#ifndef SIMU_GOL_HH
	#define SIMU_GOL_HH

	#include "simu.hh"

	/* -------------------------------------------------------------------------- */
	class GOL : public Simu {
	public:
	GOL(long int dims[2], int ghost, bool periodic,
	MPI_Comm global_comm,
	const std::string & server, int port = 4321)
	: Simu(dims, ghost, periodic, global_comm, server, port) {}

	GOL(long int dims[2], int ghost, bool periodic = true,
	MPI_Comm global_comm = MPI_COMM_WORLD)
	: Simu(dims, ghost, periodic, global_comm) {}

	void determineCell(long int i, long int j, int tid) {
	long int _i = i;
	long int _j = j;
	char neighbours = -((*_old_grid)(_i, _j) & 0x0F);
	for (char v = -1; v < 2; ++v)
	for (char w = -1; w < 2; ++w)
	neighbours += ((*_old_grid)(_i + v, _j + w) & 0x0F);

	char res = 0;
	if (neighbours == 2) {
	res = (*_old_grid)(i, j) & 0x0F;
	} else if (neighbours == 3) {
	res = 1;
	}

	(*_grid)(_i, _j) = res + (tid << 4);
	}

	void initialState(bool random) {
	if (random) {
	_old_grid->randomize();
	} else {
	_old_grid->clear();
	}
	}
	};

	#endif /* SIMU_GOL_HH */