Math Operations

Operators for working with numbers. Can be used directly in expressions or with variables.

+ — Addition

Adds two numbers.

var a = 2 + 3
// a equals 5

TIP

The + operator can also join strings when used with string variables. See Variables for examples.

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- — Subtraction

?hp < maxhp - 5
  equip vigor sword dL

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* — Multiplication

var a = 2
var b = 5
a = a * b
// a equals 10

var c = 2 * 0.4
// c equals 0.8

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/ — Division

Integer division is rounded down. Use floats (e.g. 5.0) for decimal results.

var a = 8
a = a / 4
// a equals 2

var b = 5.0
b = b / 2
// b equals 2.5

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++ — Increment

Increases a variable by 1.

var a = 3
a++
// a equals 4

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-- — Decrement

Decreases a variable by 1.

var a = 3
a--
// a equals 2

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% — Modulo

Returns the remainder after division. Commonly used for repeating patterns.

var a = 5 % 4
// a equals 1

// Animate every 8 frames:
?time % 8 < 4
  > \O)
?time % 8 > 3
  > (O/

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( ) — Parentheses

Parentheses control order of operations.

var a = 2 * (3 - 1)
// a equals 4

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! — Negation

Inverts a boolean expression when placed in front of it.

?!ai.enabled
  >The AI is not enabled.

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! is also used as the not-equal comparison operator when used between two values (?foe ! poison). See Comparisons.