please be more patient, wait at least 24 hours until you ask again.

You don't need an array for that, use ent_create in a loop like this:

Code:
int i,j;

i = _; // edge of field
while (i < _)
{
  j = _;
  while (j < _)
  {
    ent_create(vector(i, j, 0), _, _);
    j += _;
  }
  i += _;
}


this code is not complete and untested, you need to replace the _ with fitting values for your game. It can create fields of enemies.
check ent_create in the manual if you don't know it yet.

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