Указатель и его неопределённый тип

struct SAI_BuMa
{
    int number_BuMa;
    int counter_BuMa;
};

AI[i].style[j].pointer[t] = new SAI_BuMa;
                    IF_data_AI >> tmp;
                    static_cast <SAI_BuMa*> (&AI[i].style[j].pointer[t]->number_BuMa) = tmp; // вот тут ошибка что делать

AI[i].style[j].pointer[t] = new SAI_BuMa;
                    SAI_BuMa * pointer_SAI_BuMa;
                    pointer_SAI_BuMa = static_cast <SAI_BuMa*> (AI[i].style[j].pointer[t]);
                    IF_data_AI >> tmp;
                    tpointer_SAI_BuMa->counter_BuMa = tmp;
                    IF_data_AI >> tmp;
                    pointer_SAI_BuMa->number_BuMa = tmp;

AI[i].style[j].pointer[t] = new SAI_BuMa;
IF_data >> AI[i].style[j].pointer[t] -> counter_BuMa >> pointer_SAI_BuMa -> number_BuMa;

struct SAI_command
{
    vector <void *> pointer;
    vector <ECommand> command;
};

#include <iostream>
 
struct Foo
{
    int foo;
};
 
int main()
{
    void* ptr_void;
    ptr_void = new Foo;
 
    std::cin >> static_cast<Foo*>(ptr_void) -> foo;
    std::cout << static_cast<Foo*>(ptr_void) -> foo << std::endl;
 
    delete static_cast<Foo*>(ptr_void);
 
    return 0;
}

    static_cast <SAI_BuMa*> (AI[i].style[j].pointer[t])->counter_BuMa=tmp;

struct SAI_style
{
    vector <SAI_command> building_layer;
    int current_command;
    int current_layer;
    int chance;
};

    vector < SAI_style> *AI_style = static_cast <vector  <SAI_style> *> (static_cast<void*> (&AI[state_kingdom]));

AI_style[0]->

(*AI_style)[0].

vector < SAI_style> ::iterator AI_style =  (AI.begin() + state_kingdom);