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Tutorial Help

 
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Tutorial Help, Use of Unions in games
NickDMax
28 Oct, 2007 - 07:04 AM
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Ok, I am trying to finish up this bad idea I started a while back called "Data Modeling for Games in C". The next section is on structures (which is actually what I wanted to talk about to begin with). But I wanted to mention something about Unions too... problem is, I can't think of a real use for Unions in a text based RPG. Now, I KNOW how to use unions (I don't need a tutorial or anything) but can anyone think of some practical uses of C Unions in terms of a text based RPG?
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Pontus
RE: Tutorial Help
28 Oct, 2007 - 11:13 PM
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Something like this?
(I know its C++, it's just to give you an idea.)

CODE

class Weapon
{
public:
          string name;
          int price,damage;
};
class Shield
{
public:
          string name;
          int price,defence;
};
class Bag
{
public:
          union Slot
          {
           Weapon wep;
           Shield shield;
          };
          Slot slots[50];
};



This post has been edited by manhaeve5: 28 Oct, 2007 - 11:16 PM
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NickDMax
RE: Tutorial Help
29 Oct, 2007 - 04:54 AM
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Not a bad idea. In fact a pretty darn good one. The problem is of course that you don't know if you have a weapon or a shield in the slot (but do you care?). It actually had not occurred to me to talk about polymorphism in C as I have never really found it all that practical.

Any other ideas?
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Pontus
RE: Tutorial Help
29 Oct, 2007 - 06:30 AM
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Maybe they are a bit the same but you now alteast now what you're dealing with
CODE

struct Loot
{
union loot
{
  int gold;//size: 4
  Item *item1;//size: 4
}
int type;//1 is for gold , 2 is for an item
}
struct Monster
{
Loot drop;
int hp,damage;
string name;
}


This post has been edited by manhaeve5: 29 Oct, 2007 - 06:33 AM
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NickDMax
RE: Tutorial Help
29 Oct, 2007 - 07:26 AM
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thank you again... this was more along the lines of what I was thinking of.
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RE: Tutorial Help
29 Oct, 2007 - 09:35 AM
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Your welocme. smile.gif
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