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IGameCalculationPart

Interface

Inheritance 37 descendants

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A calculation part: one term of a game calculation. A part returns a float for the evaluation context of the calculation: the caster, an optional target, the owner spell or item, the spell slot and the spell level. A GameCalculation adds the values of its top-level parts. Parts such as SumOfSubPartsCalculationPart and ProductOfSubPartsCalculationPart hold other parts, so a calculation is a tree.

What a part reports

Output Use
value The number that the part adds to the calculation.
base value The value without the changes that the caster's spell modifiers make.
coefficient The ratio that the tooltip prints for the part. For a part that scales with something, it is the factor per unit, such as the ratio of a stat. For other parts, it is the value.
icon The icon key that the tooltip prints next to the part in the CombinedWithScalingIcons display mode. Parts that do not scale with anything have no icon.
style tag The tooltip style of the part. When the value differs from the base value, the part uses the modified style tag of GlobalStatsUIData.

Scaling parts are the parts that scale with a stat, an ability resource, a buff or the caster's items: the Stat*, AbilityResource*, BuffCounter*, ByItem* parts, PercentageOfBuffNameElapsed, SiblingStatCoefficientBySubPart and SubPartScaledProportionalToStat. The ExpandedPartsWithCoefficientsAsPercent display mode prints their coefficients as percentages. Character-level parts are not scaling parts.

Missing parts

The client checks null sub-parts, but the result depends on the part:

Part Null sub-part gives
SumOfSubPartsCalculationPart, ClampSubPartsCalculationPart, MinOfSubPartsCalculationPart, MaxOfSubPartsCalculationPart The entry is skipped.
ProductOfSubPartsCalculationPart, ExponentSubPartsCalculationPart 0
StatBySubPartCalculationPart, SubPartScaledProportionalToStat, SiblingStatCoefficientBySubPart 0
CustomReductionMultiplierCalculationPart 0, not 1

A null entry directly in GameCalculation.mFormulaParts is skipped.

Target stats

A part with UseTargetStats reads the stats of the target. When the context has no target, it reads the caster without an error. Parts that evaluate another calculation start a new context without a target: SpellCalculationCalculationPart, ExternalCalculationCalculationPart and GameCalculationConditional. Inside them, UseTargetStats parts read the caster. GameCalculationModified keeps the target.

Referenced by 14 classes · 18 properties