This file contains Ufo data. These are not used within the host program, but sent to Winplan users in RST files. This file allows third-party programs to create completely new objects. Players can interact with these Ufos using the mission codes 20...999, special FCodes or messages, depending upon the program.

The host uses the visibility ranges to decide which Ufo to send to which player. This makes it impossible to show a particular Ufo to selected players only.

The file contains 100 or 1000 records of 78 bytes each:
 +0     WORD    Color (1..15)
                0 means this Ufo doesn't exist. The color is the usual
                encoding for colors in VGA text and graphics modes:
                 0      black            8      dark gray
                 1      blue             9      light blue
                 2      green           10      light green
                 3      cyan            11      light cyan
                 4      red             12      light red
                 5      magenta         13      light magenta
                 6      brown           14      yellow
                 7      light gray      15      white
 +2  20 BYTEs   Name of object, shown on the star charts
+22  20 BYTEs   Info 1
+42  20 BYTEs   Info 2
                Shown when the object is selected.
+62     WORD    X (0..4000)
+64     WORD    Y (0..4000)
+66     WORD    Warp speed (official range is 0..15, but some programs put
                other things than a Warp speed here...)
+68     WORD    Heading in degrees: 0=North, 90=East, 180=South, 270=West,
                -1=unknown;
+70     WORD    Distance from which a planet can see the object
+72     WORD    Distance from which a ship can see the object
                Valid values are 1..5000, all other values are equal to
                5000.
+74     WORD    Radius of object
+76     WORD    Type of object. A program always should use only objects
                if it knows their type. To avoid collisions, each
                programmer should get a range of Id numbers from Tim
                Wisseman. These are already assigned:
                    1           used by PHost for wormholes
                 101..150       Dan Gale
                 151..200       Jan Peter Dijkstra
                 201..250       Sean Martens
                 251..255       Bret Lusskin
                 256..260       DeltaDev@GMX.net
                 300..310       Norman Violet
                 311..350       Scott Zinssell
                 351..400       Boris Psakhis
                 401..425       Nestor Delfino
                 426..450       Bruno Smit
                 451..475       Dave Killingsworth
                 500..525       Tony Llopis
                 526..550       Joerg Schueler
                 551..575       Markus Mann
                 576..599       Rick Blanchette
                 600..620       Michael C. Patrick
                 621..630       Anthony Adam
                 631..650       Evan Shanks
                 651..699       Marc Bonaventura
                 700..799       RAW! (Dan and Dave)
                 850..900       Rene Gallati
                 901..999       Tobias Wolf
                 1000..1050     Sven Bursch
                 1051..1075     Jean-Marie Clement
                 1076..1099     Scott Garner
                 1100..1125     Kenneth Strom
                 1126..1150     Atomic
                 1151..1175     Hofbauer Heinz
                 1176..1199     Kevin Foster
                 1200..1299     George Carey
                 1300..1349     Thorsten Kaben
                 1350..1374     BioMenaced
                 1375..1399     Jayesh Palshikar
                 1400..1420     Scott Lombard
                 1421..1440     Ronald Landheer
                 1441..1460     Greg Kazarian
                 1461..1470     Don Friesen (Robomaster)
                 1471..1555     Wolfgang Merkel
                 1556..1560     Bernd Ruf (PHCc)
                 1561..1570     Dennis Weise
                 10401..10499   Yann Ramin
                 10500..10599   Star Destroyer

PHost Wormholes

Wormholes are not stored in the UFO.HST file; only in RST files and KOREx.DAT. PHost "overlays" them during RST creation.

Wormholes are mapped to Ufos and then filtered. PHost allocates one Ufo slot for unidirectional wormholes, and two slots for bidirectional ones. From the sequence of Ufos alone you can not tell whether a particular wormhole is the entry or the exit of a bidirectional wormhole. Matters are complicated by the fact that wormholes are reported with a different Id in UTILx.DAT and as Ufo.

However, the sequence of Wormhole reports in UTILx.DAT and the sequence of wormhole Ufos can be matched against, so the UTILx.DAT sequence can deliver the real Ids for wormhole Ufos (UTILx.DAT does not contain the information whether a wormhole is unidirectional or bidirectional!). Thanks to Piotr Winiarczyk for this.

Wormhole Ufos always have color 2. In PHost before 3.3e, they always have radius 5 and visibility range 5000; later versions report the correct values.