void drawAttackGrid()
{
	int i, j;
	printf("    0 1 2 3 4 5 6 7 8 9\n");
	for(i = 0; i < GRID_SIZE; i++)
	{
		printf("%d | ", i);
		for(j = 0; j < GRID_SIZE; j++)
		{
			switch(attack_grid[j][i])
			{
				case 0:
				{
					printf(". ");
					break;
				}
				case 1:
				{
					printf("1 ");
					break;
				}
				case 2:
				{
					printf("2 ");
					break;
				}
				case 3:
				{
					printf("~ ");
					break;
				}
			}
		}
		printf("\n");
	}
}