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vcmi/docs/modders/Bonus/Bonus_Updaters.md
2025-06-27 12:09:28 +03:00

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# Bonus Updaters
Updaters come in two forms: simple and complex. Simple updaters take no
parameters and are specified as strings. Complex updaters do take
parameters (sometimes optional), and are specified as structs.
Check the files in `config/heroes/` for additional usage examples.
## GROWS_WITH_LEVEL
Effect: Updates val to `ceil(valPer20 * floor(heroLevel / stepSize) / 20)`
Example: The following updater will cause a bonus to grow by 6 for every 40 levels. At first level, rounding will cause the bonus to be 0.
```json
"updater" : {
"type" : "GROWS_WITH_LEVEL",
"valPer20" : 6,
"stepSize" : 2
}
```
Example: The following updater will cause a bonus to grow by 3 for every 20 levels. At first level, rounding will cause the bonus to be 1.
```json
"updater" : {
"type" : "GROWS_WITH_LEVEL",
"valPer20" : 3,
"stepSize" : 1
}
```
Remarks:
- The rounding rules are designed to match the attack/defense bonus progression for heroes with creature specialties in HMM3.
- There is no point in specifying val for a bonus with a GROWS_WITH_LEVEL updater.
## TIMES_HERO_LEVEL
Effect: Updates val to `val * heroLevel / stepSize`
Usage: `"updater" : "TIMES_HERO_LEVEL"`
Usage with stepSize greater than one:
```json
"updater" : {
"type" : "TIMES_HERO_LEVEL",
"stepSize" : 2
}
```
## TIMES_STACK_LEVEL
Updates val to `val * stackLevel`, where `stackLevel` is level of stack (Pikeman is level 1, Angel is level 7)
Usage:
`"updater" : "TIMES_STACK_LEVEL"`
Remark: The stack level for war machines is 0.
## DIVIDE_STACK_LEVEL
Updates val to `val / stackLevel`, where `stackLevel` is level of stack (Pikeman is level 1, Angel is level 7)
Usage:
`"updater" : "DIVIDE_STACK_LEVEL"`
Remark: The stack level for war machines is 0.
## TIMES_HERO_LEVEL_DIVIDE_STACK_LEVEL
Effect: Same effect as `TIMES_HERO_LEVEL` combined with `DIVIDE_STACK_LEVEL`: `val * heroLevel / stackLevel`
Intended to be used as hero bonus (such as specialty, skill, or artifact), for bonuses that affect units (Example: Adela Bless specialty)
Usage:
`"updater" : "TIMES_HERO_LEVEL_DIVIDE_STACK_LEVEL"`
## TIMES_STACK_SIZE
Effect: Updates val to `val = clamp(val * floor(stackSize / stepSize), minimum, maximum)`, where stackSize is total number of creatures in current unit stack
Example of short form with default parameters:
```json
"updater" : "TIMES_STACK_SIZE"
```
Example of long form with custom parameters:
```json
"updater" : {
"type" : "TIMES_STACK_SIZE",
// Optional, by default - unlimited
"minimum" : 0,
// Optional, by default - unlimited
"maximum" : 100,
// Optional, by default - 1
"stepSize" : 2
}
```
## TIMES_ARMY_SIZE
Effect: Updates val to `val = clamp(val * floor(stackSize / stepSize), minimum, maximum)`, where stackSize is total number of creatures in hero army that fulful filter
Parameters:
- `minimum`: minimum possible value of the bonus value. Unlimited by default
- `maximum`: maximum possible value of the bonus value. Unlimited by default
- `stepSize`: number of units needed to increase updater multiplier by 1
- `filteredCreature`: identifier of specific unit to filter
- `filteredLevel`: level of units that need to be counted. Redundant if `filteredCreature` is used
- `filteredFaction`: faction of units that need to be counted. Redundant if `filteredCreature` is used
Filtering for specific unit:
```json
"updater" : {
"type" : "TIMES_ARMY_SIZE",
"filteredCreature" : "pikeman",
// Optional, by default - unlimited
"minimum" : 0,
// Optional, by default - unlimited
"maximum" : 100,
// Optional, by default - 1
"stepSize" : 2
}
```
Filtering for specific faction:
```json
"updater" : {
"type" : "TIMES_STACK_SIZE",
"filteredFaction" : "castle"
}
```
Filtering for specific unit level:
```json
"updater" : {
"type" : "TIMES_STACK_SIZE",
"filteredLevel" : 2
}
```
## BONUS_OWNER_UPDATER
Helper updater for proper functionality of `OPPOSITE_SIDE` limiter