home :: about :: development guides :: irc :: forums :: search :: paste :: links :: contribute :: code dump

-> Click here to learn how to get live help <-

New Paste :: Recent Pastes:: No Line Numbers

Help for JazzD by Rainmaker
// First of all, CMissile (I assume) has previous and next pointers
// They need to be nullified in the CMissile constructor

// Now, you need to decide which classes are going to do what work
// Right now, you are mixing management of the missile linked list in the enemy and the missile class
// I highly recommend putting the linked list management in the hands of the missile class, so that
// it is easier to use elsewhere (like in the player code)

// So first, a function to add a missile to the list
// This will work no matter which member of the list you call from, since it automatically finds the end of the list
void CMissile::AddMissile(CMissile *missile)
    // Get the last entry in this linked list
    CMissile *node = this;
    while( node->next ) {
        node = node->next;

    // Node is now the last item in the list, so we need to set its next entry to our new missile
    node->next = missile;
    missile->prev = node;
    // Now our new missile is in the list

// Next, a function to remove a missile from the list
// To use this, have the missile you want to remove call the function
void CMissile::RemoveSelf()
    // Have the previous entry point to our next entry
    if( prev )
        prev->next = next; // This works even if our next is null - it just sets it to null, like we want
    // Do the same for our next entry
    if( next )
        next->prev = prev;
    // Now we are out of the list, we just have to delete ourself

// Destroying the entire list is simple. By having the destructor delete the next entry in the list, then the
// list will recursively self-destruct. The only requirement is to delete from the first entry
// If you want to delete a single entry from the list only, then you call RemoveSelf() first, so deleting the
// entry will have no effect on the rest of the entries
    if( next )
        delete next;
    next = NULL;
    prev = NULL; // We dont delete the previous entry, that is already being deleted

// Your Explode function can now look like this:
void CMissile::Explode(CMissile *ent)
    testing = Distance2(origin,neworg);
    if(Distance2(origin,neworg) > distance) {        
// The entire explode function is a little weird. Why don't you just have a function called ShouldExplode
// that checks the distance, and returns a bool on whether it should explode. Then if it should, you could remove the
// missile from the list and delete it

// FireWeapon needs to be rewritten too. It should look like this now:
void CEnemy::FireWeapon(CVector3 org, int weapon)
   if(timeFromStart - lasttime < 320) 

   // Create our new missile
    weaptemp2 = new CMissile;

    // If we already have a list, add it to our list
        missile->AddMissile( weaptemp2 );
    // Otherwise, set our list to our new missile
        missile = weaptemp2;

    // missile should always point to the first item in the list, while weaptemp2 is trivial
    // weaptemp2 could point to the last entry (if you dont change it, this add code will do that)

    switch (weapon) {
    // ...

// One more change - the destructor
// You have to destroy the list, so you must do this:
if( missile ) delete missile;
missile = NULL;
// Now, as you know, the entire list should recursively self-destruct! w00t!
// That should do it, hope that helps.