#include "types.h"
#include "ally.h"

#include <stdlib.h>

ally * ally_find(ally *al, const struct faction *f) {
  for (;al;al=al->next) {
    if (al->faction==f) return al;
  }
  return 0;
}

ally * ally_add(ally **al_p, struct faction *f) {
  ally * al;
  while (*al_p) {
    al = *al_p;
    if (al->faction==f) return al;
    al_p = &al->next;
  }
  al = (ally *)malloc(sizeof(ally));
  al->faction = f;
  al->status = 0;
  al->next = 0;
  *al_p = al;
  return al;
}

void ally_remove(ally **al_p, struct faction *f) {
  ally * al;
  while (*al_p) {
    al = *al_p;
    if (al->faction==f) {
      *al_p = al->next;
      free(al);
      break;
    }
    al_p = &al->next;
  }
}