12#ifndef GUARD_INVADERSGRID_H
13#define GUARD_INVADERSGRID_H
unsigned randomValidInv() const
unsigned getOutterInvader() const
gives the index of the last valid (type different than NONE) invader
bool hasNoValid() const
tells if the column contains no non type NONE invader
unsigned randomValidCol() const
unsigned validColsNumber() const
InvaderType
List of all invader type.