Software Engineering and Computer Games

13.4. damage and draw

When a bullet hits a critter, it gets damaged. We have a cCritter method for this.

int cCritter::damage(int hitstrength) 
{ 
        /* If we have our shield on, or were just hit, then don’t 
            allow a hit. */ 
    if ( _shieldflag || recentlyDamaged() ) 
        return 0; 
    _lasthit_age = _age; /* Save age for use by the recentlyDamaged() 
        accessor. */ 
    _health -= hitstrength; 
    if (_health <= 0) 
    { 
        _health = 0; //Do not allow negative health. 
        die(); /* Make a delete_me service request, possibly make 
            noise or more. */ 
        return _value; //The reward for killing this critter. 
    } 
    return 0; //Not killed yet. 
} 

As you can see, damage does nothing if _shieldflag is on, or if you’ve been recently hit. By default _shieldflag is FALSE, and normally only the cCritterArmedPlayer ...