structs em C, algo meio object oriented idk

structs.c

// ref from https://www.alicemaz.com/writing/program.html

// it gets easier to reason about structs being only a definition of how much space we need to allocate for a "composite" data type.
typedef struct Android Android;
struct Android {
    char *name;
    char *secret_name;
    unsigned int kills;
    bool on_mission;
};

Android a_two = { "A2", "No2", 972, true }; // stack-allocated struct

// below is like initiating an instance of an object
Android* make_android(char *name, char *secret_name) {
  Android *a = malloc(sizeof(Android));
  
  a->name = name;
  a->secret_name = secret_name;
  a->kills = 0;
  a->on_mission = false;
  
  return a;
}

// stack-allocated pointers to heap-allocated structs, they can be accessed as 
//long as a copy of the pointer is retained somewhere and are never deallocated
//unless explicitly freed

Android *two_b = make_android("2B", "2E");
Android *nine_s = make_android("9S", NULL);

// we can modigy them on the fly
two_b->on_mission = true;
two_b->kills++;


// but modifying structs on the fly is complicated because of potential concurrency and bugs
// therefore we will have to find a way to check the conditions, before modifying data.

int go_on_mission(Android *a) {
  if(a->onmission) {
    fprintf(stderr, "%s is already on a mission!\n", a->name);
    return 1;
  }
  
  a->on_mission = true;
  return 0;
}

void score_kill(Android *a, bool was_friendly) {
  if(was_friendly) {
    printf("redacting combat logs...\n");
  }
  else {
    a->kills++;
  }
}

go_on_mission(two_b);
score_kill(two_b, false);