EEex Opcodes¶
Note
Opcodes are used in .eff (effect) files - and in embedded versions in .itm (item) and .spl (spell) files - and provide additional features and functionality in all the Infinity Engine games. The effect type field of the EFF V1.0 files and the Opcode number field of the EFF v2.0 files indicates the opcode in use for a particular .eff file. Modifying existing .eff files to change opcodes used, or creating new effects is usually done with modding tools such as WeiDU or NearInfinity. For details on the different opcodes (effects) available in the Infinity Engine games, see the Infinity Engine Structures Description Project
EEex expands on the capability of some existing opcodes, and adds new opcodes for mod makers to make use of.
Opcode Listing¶
Opcode |
Description |
Wizard Spell Slots Modifier |
|
Priest Spell Slots Modifier |
|
Protection: Stoneskin |
|
Spell Effect: Wild Magic |
|
Item Usability |
|
Immunity from Spell and Message |
|
Set Temporary AI Script |
|
Set Extended Stat |
|
Invoke Lua |
* indicates new opcodes added via EEex
Updated Opcodes¶
Opcode #42¶
Wizard Spell Slots Modifier
Special: Force the slot modification - If Special parameter is non-zero, the slot modification ignores access to particular spell level requirement.
Opcode #62¶
Priest Spell Slots Modifier
Special: Force the slot modification
If Special parameter is non-zero, the slot modification ignores access to particular spell level requirement.
Opcode #218¶
Protection: Stoneskin
Resource Key: Fire spell
Spell specified in resource key is fired when all layers are lost.
Opcode #280¶
Spell Effect: Wild Magic
Parameter #1: Surge Roll
Special: Show hardcoded graphical effects
‘Surge Roll’ field allows to force particular wild surge roll to occur if it is set to non-zero. If Special parameter is non-zero, all hardcoded wild surge graphical effects are suppressed.
Opcode #319¶
Item Usability
Power: Mode
Parameter #1: IDS Entry / Value
Parameter #2: IDS File / Stat Type
Known values for ‘Mode’ are:
0 item restricted if condition holds (‘Not usable by’ mode), parameters use IDS targets
1 item restricted if condition fails (‘Usable by’ mode), parameters use IDS targets
2 like 1 but parameters use splprot.2da
3 like 0 but parameters use splprot.2da
If ‘Mode’ is set to 2 or 3, then the creature type specified by the ‘Stat Type’ field will be affected by this opcode. See opcode #324 for more information.
Opcode #324¶
Immunity from Spell and Message
Special: Strref
Hardcoded enginest.2da strref can be optionally overridden by strref specified in Special field.
New Opcodes¶
Opcode #400¶
Set Temporary AI Script
Parameter #1: Irrelevant
Parameter #2: Type
Description: Works exactly like Opcode #82 except:
A null resref can null a script slot The original script is restored when the duration runs out or the effect otherwise ends.
Opcode #401¶
Set Extended Stat
Parameter #1: Statistic Modifier
Parameter #2: Type
Special: Stat
Description: Applies the modifier value specified by the ‘Statistic Modifier’ field in the style specified by the ‘Type’ field.
Known values for ‘Type’ are:
0 Cumulative Modifier -> Stat = Stat+ ‘Statistic Modifier’ value
1 Flat Value Modifier -> Stat= ‘Statistic Modifier’ value
2 Percentage Modifier -> Stat = (Stat* ‘Statistic Modifier’ value) / 100
Values for ‘Stat’ are taken from stats.ids (Note: EEex expands number of usable stats.ids entries to 65737).
Opcode #402¶
Invoke Lua
Parameter #1: Lua Value 1
Parameter #2: Lua Value 2
Special: Lua Value 3
Description: The targeted creature(s) calls a Lua function specified by the resource key. Maximum function name length is 8, and function names must be completely upper-case.
Object that invoked the effect and values passed by the opcode can be used in the called Lua function.
Example: Click Here or see below