File: Bonus_Updaters.md

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# Bonus Updaters

TODO: this page may be incorrect or outdated

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

- Type: Complex
- Parameters: valPer20, stepSize=1
- 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" : {
    "parameters" : [ 6, 2 ],
    "type" : "GROWS_WITH_LEVEL"
}
```

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" : {
    "parameters" : [ 3 ],
    "type" : "GROWS_WITH_LEVEL"
}
```

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

- Type: Simple
- Effect: Updates val to `val * heroLevel`

Usage: `"updater" : "TIMES_HERO_LEVEL"`

Remark: This updater is redundant, in the sense that GROWS_WITH_LEVEL
can also express the desired scaling by setting valPer20 to 20\*val. It
has been added for convenience.

## TIMES_STACK_LEVEL

- Type: Simple
- Effect: Updates val to `val * stackLevel`

Usage:

`"updater" : "TIMES_STACK_LEVEL"`

Remark: The stack level for war machines is 0.

## ARMY_MOVEMENT

- Type: Complex
- Parameters: basePerSpeed, dividePerSpeed, additionalMultiplier, maxValue
- Effect: Updates val to `val+= max((floor(basePerSpeed / dividePerSpeed) * additionalMultiplier), maxValue)`
- Remark: this updater is designed for MOVEMENT bonus to match H3 army movement rules (in the example - actual movement updater, which produces values same as in default movement.txt).
- Example:

```json
"updater" : {
    "parameters" : [ 20, 3, 10, 700 ],
    "type" : "ARMY_MOVEMENT"
}
```

## BONUS_OWNER_UPDATER

TODO: document me