OBDATA.DAT

General Notes

OBDATA.DAT is found in GEODATA and contains general information on objects found in the game.

There are 80 entries, each of which are 54 bytes long. It is 4,320 bytes long.

33 entries are for corpses, which includes 4 entries (quarters) for large corpses, including tanks. Otherwise there are 41 "object" entries, and 6 obsolete/unused entries.

Values are presented according to offset (0 to 53) in bold.

Structure

0-19: Name of object. Delimited by a null character. Note: These are internal "working" names. They all make sense, but are not the standardized names displayed in the game.

20: BIGOBS.PCK reference

21: FLOOROB.PCK reference

22: Weapon Strength (Same as seen in UFOpaedia)

23: Item Weight? See [43] - could one be thrown weight, and the other inventory weight?

24: X Size (width)

25: Y Size (height)

26-28: Look-up within OBDATA for ammo this weapon uses. Up to three types possible; 255 for no (more) ammo. Note that ammo always directly follows its weapon in this file.

29: HANDOB.PCK reference

30: Same as 29

31: Damage Type

   0  AP
   1  IN
   2  HE
   3  Laser
   4  Plasma
   5  Stun
 255  Weapon which needs ammo / "Not Applicable"

32: Accuracy, Auto

33: Accuracy, Snap

34: Accuracy, Aimed

35: TUs Used, Auto

36: TUs Used, Snap

37: TUs Used, Aimed

38: Several values seen; possibly only clip size counts:

 Rounds   Clip size if is ammo ([49] set)
    0     All corpses and the electroflare and mind probe
    8     Standard pistol (not its clip!)
   65     Stun rod! hmm
   10     All other objects/weapons

39: All corpses are 0 and everything else is 8 except:

 0  Plasma pistol clip
 5  Stun rod
 9  Pistol and its clip

40: All corpses 0 and everything else 100 except the three plasma clips and electroflare are also 0.

41: All corpses 0 and everything else 50 except the three plasma clips and electroflare are also 0, and the stun rod is 30.

So a summary of 39 to 41 looks like this:

  39   40   41   Objects
   0    0    0   All corpses (33 objects) plus the plasma pistol clip(?!)
   5  100   30   Stun rod
   8    0    0   Two plasma clips (rifle and heavy) and electroflare
   8  100   50   Everything else (34 objects)
   9  100   50   Pistol and its clip

42: Explosive strength needed to destroy object

43: Item Weight

44: Grenade Type

1  Grenade, Alien Grenade, Hi-Ex
2  Prox
3  Smoke

45: Maybe an abandoned bit field, all except the Elerium tick?:

  0  All corpses and many human objects, including weapons and ammo
  1  All alien weapons and ammo but also several common human ammos and the pistol
  4  Elerium - wtf?

46: Boolean: Is Weapon That Shoots. 13 total. Still counts if ammo is built-in (i.e., lasers). Is not set for ammo, grenades, stun rod, etc.

47: Boolean: Is Weapon. Same as [46] plus Stun rod.

48: Boolean: Is Non-Waypoint Shot Weapon (Boolean). Same as [46] except for Blaster.

49: Boolean: Is Ammo. All 16 types. Not set for grenades, lasers, etc.

50: Boolean: Is Two-Handed Weapon. Includes probably garbage such as some (but not all) corpses and the Mind Probe.

51: Boolean: Is Blaster Launcher

52: Boolean: Is Alien

53: Scoring points. However, Elerium is zero - is bit from [45] used for its special mission result?