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5.3 KiB
Critter Properties
Generic Critter Properties
Generic Critter Propertes (CritterProp struct) (75 bytes)
0000 byte Intelligence; unused
0001 [21]byte Primary attack info
0016 [21]byte Secondary attack info
002B uint8 Perception
002C uint8 Defence
002D sint8 Projectile source height offset
002E int32 Flags
0032 byte Mirrored views; unused
0033 [8]uint8 Frame numbers; Amount for each posture
003B uint8 Animation speed
003C byte Attack sound index
003D byte Near sound index
003E byte Hurt sound index
003F byte Death sound index
0040 byte Notice sound index
0041 int32 Corpse triple - 0x00CCSSTT; zero for "none"
0045 byte View count; for multi-view postures
0046 byte Secondary attack probability
0047 byte Disrupt probability
0048 byte Treasure type
0049 byte Hit effect -- 0x00: meat, 0x01: plant, 0x02: robot, 0x03: cyborg, 0x04: generic
004A byte Attack key frame
Perception is a probability whether an AI detects hacker when visible during an AI interval.
The projectile source height offset is a vertical offset specifying from where projectiles should be launched.
This is set to some positive values for the Elite Guard and Mutated Cyborg, so that their projectils appear from their heads.
The animation speed specifies the time of a single frame of an animation. A value of 0xFF means a time of approximately 0.9 seconds.
For all sound indices, a value of 0xFF indicates "no sound".
No enemy has a sound set for being hurt in the main game.
View count determines how many frames are available per viewing direction. Cyberspace entities, as well as unused critters, have this set to 0x01, all others have 0x08. Changing these values messes up rendering of the critter, and/or all subsequent critters. The sequence of the corresponding images will have to be adjusted accordingly.
The secondary attack probability determines how likely the critter will use its secondary attack when close to the hacker. 0xFF means always, 0x00 will have the critter use the secondary attack only when farther away.
The disrupt probability determines how likely the critter will be interrupted when being hit. 0xFF means always, 0x00 will have the critter execute its attacks and movement without interruptions.
Treasure type is an enumeration value (ranging from 0x00 to 0x0E), pointing into a hardcoded pool of possible loot. See below for the possible constants. The concrete loot is randomized accordingly.
The attack key frame value is an index into the attack animation, when the corresponding attack should take effect.
Critter Attack Info (CritterAttack struct) (21 bytes)
0000 uint8 Damage type
0001 uint8 Special damage type
0002 [2]byte Unused
0004 int16 Damage modifier
0006 uint8 Offence value
0007 uint8 Penetration
0008 uint8 Attack mass
0009 int16 Attack velocity
000B uint8 Accuracy
000C uint8 Attack range
000D int32 Reload time, with 0x100 being approximately 0.9 seconds
0011 int32 Projectile triple -- 0x00CCSSTT; zero for "none"
The damage type seems to be compatible with the damage type of generic weapon info. Yet all damage types that affect hacker are handled equally; The two damage types 0x04 and 0x08 have no effect at all.
The main game only uses damage types
0x01and0x02(and some combinations).0x04is also set for Diego as well as SHODAN, though this has no further effect.
The offence value is compared to the defence value of the target object. See common properties for details.
An accuracy of 0x00 will still have the critter hit, though not that often and with less damage.
The critter will want to get within the attack range to perform its attack.
Critter Properties Flags (4 bytes)
0x00000001 Flying
There are further constants defined, though not in use by the engine. The properties file has some critters with flag
0x00000004set, which indicated "small" critters.
Treasure Type Enumeration (1 byte)
0x00 No treasure
0x01 Humanoid
0x02 Drone
0x03 Assassin
0x04 Warrior cyborg
0x05 Flier bot
0x06 Security 1 bot
0x07 Exec bot
0x08 Cyborg enforcer
0x09 Security 2 bot
0x0A Elite cyborg
0x0B Standard corpse
0x0C Loot-oriented corpse
0x0D Repairbot
0x0E Serv-bot
Specific 3 Properties
These critters (14/3/x) are for cyberspace.
Cyberspace Critters Specific Properties (CyberCritterProp struct) (6 bytes)
0000 [3]byte Colour scheme
0000 [3]byte Alternative colour scheme
The colour schemes contain 3 palette indices from the game palette. The 'alternative' colours are used for critters attacking or being hostile.
The index into this list comes from the geometry properties, specifically from the Set Colour and Shade command.