Unit Ids and Handle Ids

[Zeatherann]

If I have a hashtable (udg_Hash), and I store entries in it that are indexed by GetHandleId and other entries that are indexed by GetUnitTypeId will a collision occur, or is the range of handle ids different from the range of type ids? If they are different than I can store data about several unit types, as well as instance data for those units.

 

[ap0calypse]

Handle Id's are usually around the order of 1 million.
Raw Id's range from a little over 530 million to a couple billion.

You can safely store both handle id's as well as raw id's in a single hashtable without having to worry about conflicting data.

 

[Zeatherann]

Do either go below, say, 1000? or below zero?

 

[deathismyfriend]

no none of them come close to 1k. i think the lowest is around 100k

 

[Zeatherann]

I wonder what the actual range is for that stuff, i mean hashtable handle Ids go from 255 to 0 right? (or 256-1)

 

[PurgeandFire]

Handle ID's for objects on the regular handle stack will range from 0x100000 (which is the equivalent of 1048576) to infinity (depending on how many objects you have). If you have 3 objects, theoretically the last object would occupy 1048578 as a handle ID.

There are, however, some objects that have handle ID's that are not on the normal handle stack. For example, texttags or lightning. They will have indexes that range from 0-99 (I don't remember if they count backwards or what).

However, in most practical cases you won't experience any collisions. You just have to be careful when saving more obscure types such as texttags/lightning/weathereffects. Those may overlap with each other.

As for handle ID <-> rawcode ID collisions, you shouldn't experience problems.

 

[Zeatherann]

Cool, thanks. If i have those obscure types, i can offset the number, or flip one to be negative.

Max number is appx 2 billion