Question

error C2440: ‘=’ : cannot convert from ‘const BWAPI::UpgradeType’ to ‘const BWAPI::Type *’

at this line

this->generalType = type;   

what is the problem? since UnitType extends Type shouldn’t be permitted?

class CombatEvent {

public:
    CombatEvent& setUnitType(const UnitType& type);
    const Type* getGeneralType() const;

private:
    UnitType unitType;
    const Type* generalType;
}

// implementation

CombatEvent& CombatEvent::setUnitType(const UnitType& type) {

    this->generalType = type;
    this->unitType = type;

    return *this;
 }

Answer 1

You need to take the address:

this->generalType = &type;