390 lines
9.4 KiB
Plaintext
390 lines
9.4 KiB
Plaintext
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/* ************************************************************************
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* Copyright (C) 1990, 1991 - see 'license.doc' for complete information. *
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************************************************************************* */
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DATABASE DOCUMENTATION
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"database.doc"
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1. The world file:
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==================
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This file contains all the rooms, and is loaded once and for all at
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boot-time. It follows the this format:
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--------------------------------------------
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#<virtual number>
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<name>~
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<description>~
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<zone nr>
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<room_flags>
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<sector_type>
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{<direction fields and extra descriptions>}
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'S'
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#<virtual number>
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.
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.
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.
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#99999
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$~
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Explanation of fields:
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----------------------
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<Direction fields> follow this format:
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D<exit number>
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<general description>~
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<keyword list>~
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<Door flag> <key number> <to_room>
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Extra descriptions
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------------------
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Format:
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'E'
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<blank separated keyword list>~
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<description>~
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-----
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NOTE:
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All the text fields above may be left blank, but the '~' should always be
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there.
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On the 'virtual' number:
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Since the rooms for this game are expected to be written by several people,
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we have made it possible to number the rooms freely. Thus, it is possible to,
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say, number the rooms in zone 0 from 0 to 1000, the rooms in zone 1 from 1000
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to 2000, and so on. Rooms can then be added to the room file without
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upsetting the various references to rooms. In the reset command-tables, as well
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as in the exits, references to a given room are made via the virtual number
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rather than the array index. At boot-time, these references are substituted
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with the actual array indices in order to improve the game-time execution
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speed. In such places (ie the special routines for mobs/objs/rooms) where
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this substitution cannot take place, a function 'real_room', with prototype
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int real_room(int virtual_number)
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must be used. This functions performs a binary search on the array of rooms,
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looking for a room with a given virtual number. If found, the function
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returns the index to this room; if not, the game is halted.
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Note: Since a binary search is used, the rooms MUST be sorted (in the
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room-file) after their virtual number.
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-----------------------------------------------------------------------------
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2. Objects and monsters
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=======================
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The objects and mobiles are stored in two separate files. They are loaded
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once at boot-time, and then each time their zone is reset, according to the
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information stored in the ZONE-FILE.
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The world is split up into a number of zones that are updated independently.
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The exact nature of these updates are defined by the contents of the ZONE-FILE.
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-----------------------------------------------------------------------------
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2.1. The Monster file:
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======================
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The format of this file is as follows:
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#<virtual number>
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<namelist>~
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<short description>~
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<long description>~
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<description>~
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<action flags> <affection flags> <alignment> <Detailed/Simple flag>
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IF <Old/Simple flag> != 'S' {
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<strength> <intelligence> <wisdom> <dexterity> <constitution>
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<hit low> <hit high> <armour> <mana> <movement> <gold> <exp>
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<position> <default> <sex> <class> <level> <age> <weight> <height>
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<condition 0> <condition 1> <condition 2>
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<savingthrow 0> <savingthrow 1> <savingthrow 2> <savingthrow 3> <savingthrow 4>
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} else { /* Simple monsters flag is 'S' */
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<Level> <Thac0> <AC> <Hit Points (format is xdy+z)> <Damage (as HP)>
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<Gold> <Exp>
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<position> <default position> <sex>
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}
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#<virtual number>
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.
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.
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.
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#<virtual number>
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$~
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-----------------------------------------------------------------------------
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2.3. The object file:
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=====================
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The format is as follows:
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#<virtual number>
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<namelist>~
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<short description>~
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<long description>~
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<action description>~
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<type flag> <extra flag> <wear flag>
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<value 0> <value 1> <value 2> <value 3>
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<weight> <value> <cost/day>
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'E'
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<keyword-list>~
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<extra description>~
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'E'
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<keyword-list>~
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<extra description>~
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.
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.
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.
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'E'
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<keyword-list>~
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<extra description>~
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'A'
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<location> <modifier>
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.
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.
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'A'
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<location> <modifier>
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#<virtual number>
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.
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.
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.
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#<virtual number>
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'$~'
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-----------------------------------------------------------------------------
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2.3. The zone-file
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==================
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The zone-file contains the following information for each zone:
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a) The top room-number of the zone. A room belongs to a zone X if:
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zone[X-1].top < virtual_room_number <= zone[X]
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for X > 0. Rooms belong to zone 0 if their number is between 0 and the
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top of zone 0.
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b) The LIFESPAN of the zone. When the age of the zone (measured in minutes
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after last reset) reaches this number, the zone is queued for reset. The
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zone is then reset as soon as possible (more or less), depending on the
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value of the RESET_MODE-variable.
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c) The RESET_MODE. This may take on of three values:
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0: Don't reset the zone at all. In this case, the age of the zone is never
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updated, and it will never be queued for reset. Thus, the value of the
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lifespan-field is effectively ignored.
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1: Reset the zone as soon as it is deserted, ie as soon as there are no
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players located within the zone.
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2: Reset the zone no matter who or what is in it.
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d) The COMMAND TABLE. This is a series of commands to execute at reset. The
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table is terminated by the pseudo-command 'S', and thus follows the
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following format:
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<command>
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<command>
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.
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<command>
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'S'
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Each command consists of a letter, identifying the command-type, followed
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by three or four arguments. The first argument, common to all the commands,
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is called the 'if-flag'. If it is true (nonzero), the command is executed
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ONLY if the preceding command was executed. If it is false (zero), the
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command is executed anyway.
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The commands:
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M (load a mobile):
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Format: 'M' <if-flag> <mobile nr> <max existing> <room nr>
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mobile nr and room nr should be self-explanatory. The 'max
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existing' parameter specifies the maximum permissible number of
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existing units. In other words: If you only want one manifestation
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of a given monster, you just specify the number '1'. If the max
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number is about to be exceeded, the command won't be executed.
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O (load an object):
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Format: 'O' <if-flag> <object nr> <max existing> <room nr>
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Load an object and place it in a room. (NOT -1)
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G (give object to mobile):
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Format: 'G' <if-flag> <object nr> <max existing>
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Loads an object, and gives it to the last monster referenced (ie. by the
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M-command).
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Of course, this command doesn't make sense if a new mobile+object
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pair has not just been created, which is where the if-flag comes
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in handy. :)
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E (object to equipment list of mobile)
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Format: 'E' <if-flag> <object nr> <max existing> <equipment position>
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Loads object and places it in the Equipment list of the last monster
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referenced.
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Note that it is NOT necessary to precede this command with a 'G' command.
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Equipment position is one of:
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WEAR_LIGHT 0
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WEAR_FINGER_R 1
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WEAR_FINGER_L 2
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WEAR_NECK_1 3
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WEAR_NECK_2 4
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WEAR_BODY 5
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WEAR_HEAD 6
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WEAR_LEGS 7
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WEAR_FEET 8
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WEAR_HANDS 9
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WEAR_ARMS 10
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WEAR_SHIELD 11
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WEAR_ABOUT 12
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WEAR_WAISTE 13
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WEAR_WRIST_R 14
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WEAR_WRIST_L 15
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WIELD 16
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HOLD 17
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P (put object in object):
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Format: 'P' <if-flag> <object_nr1> <max existing> <object nr2>
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Loads object1 and places it in object2.
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D (set state of door)
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Format: 'D' <if-flag> <room nr> <exit nr> <state>
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State being one of:
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0: Open.
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1: Closed.
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2: Closed and locked.
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R (remove object from room)
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Format: 'R' <if-flag> <room_nr> <object_nr>
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More commands will probably be needed, and will be added as required.
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Format of the zone-file:
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---------------------------------------
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#<arbitrary number (ignored)>
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<name>~
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<top of zone>
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<lifespan>
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<reset mode>
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<command>
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<command>
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<command>
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'S'
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#<arbitrary number>
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.
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#<arbitrary number>
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$~
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2.2. The monster file:
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----------------------
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The format of this file is as follows:
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----------------------------------------------
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#<virtual number>
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<namelist>~
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<short description>~
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<long description>~
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<description>~
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<action flags> <affection flags> <Detailed/Simple flag>
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IF <Old/Simple flag> != 'S' {
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<strength> <intelligence> <wisdom> <dexterity> <constitution>
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<hit low> <hit high> <armour> <mana> <movement> <gold> <exp>
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<position> <default> <sex> <class> <level> <age> <weight> <height>
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<condition 0> <condition 1> <condition 2>
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<savingthrow 0> <savingthrow 1> <savingthrow 2> <savingthrow 3> <savingthrow 4>
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} else { /* Simple monsters flag should be 'D' */
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<Level> <Thac0> <AC> <Hit Points (format is xdy+z)> <Damage (as HP)>
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<Gold> <Exp>
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<position> <default position> <sex>
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}
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#<virtual number>
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.
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.
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.
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#<virtual number>
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$~
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----------------------------------------------
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On the skill fields:
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Format:
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--------------
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S<skill number>
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<learned> <affected by> <duration> <recognize>
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--------------
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On the virtual numbers:
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This number may be considered the 'label' of the mobile, for use in eg. the
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zonefile (see also the text about the roomfile format). When the mobile is to
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be referenced from within the code itself, the function real_mobile
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(real_object for objects) can be used to find indices to the file-index tables
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(this is only of use when writing special routines). These functions are
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automatically called from read_object/read_mobile, depending on their 'type'
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parameter (see db.doc).
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