logically weird loop

i coded soem roguelike game loop which gave me
a lot of logical trouble
imagine game has micro turns, thise micro turns are
noted by
int game_time = 0; //styart with microturn 0
if you press a key on keyboard you update variable
of chuman character: character[HUM}.action_end = game_time+300
then the not human bits should execute in thise microturns
until you reacg turn 300 then you need to read keyboard again
what work is terribly weird, maybe becouse i started
with while loop and while loops from my experience
im not sure but imo tent do be logically heavy problematic
form tiem to time..what work is
void ProcessMicroturnsUntilHuman()
  {
if( game_time < character[HUM].action_end)
{
while(game_time < character[HUM].action_end)
{
DispatchActions();
game_time++;
}
if(game_time == character[HUM].action_end) //**
    DispatchActions();
}
  }
is there some more proper form of this loop?
(the line nioted by ** i know is not needed but
overally this loop is weird imo