Enum CExpr 

pub enum CExpr {
    Lit(Val),
    Var(u16),
    Local(u16),
    Bind(u16),
    Named(AssetId),
    SelfEntity,
    Dt,
    Elapsed,
    Position(Box<CExpr>),
    Distance(Box<CExpr>, Box<CExpr>),
    Alive(Box<CExpr>),
    First(u16),
    Count(u16),
    Arith(Arith, Box<CExpr>, Box<CExpr>),
    Normalize(Box<CExpr>),
    Compare(Cmp, Box<CExpr>, Box<CExpr>),
    All(Vec<CExpr>),
    Any(Vec<CExpr>),
    Not(Box<CExpr>),
    Never,
}

A slot-resolved expression.

Variants

Lit(Val)

A constant.

Var(u16)

A world variable, by slot.

Local(u16)

One of the behavior’s locals, by slot.

Bind(u16)

A binding introduced by let or for_each, by slot.

Named(AssetId)

The entity a name resolves to.

SelfEntity

The entity this run is scoped to.

Dt

Seconds this tick advances.

Elapsed

Seconds of simulated time so far.

Position(Box<CExpr>)

An entity’s world position.

Distance(Box<CExpr>, Box<CExpr>)

Distance between two entities.

Alive(Box<CExpr>)

Whether an entity still exists.

First(u16)

The first entity a declared query selects, by slot.

Count(u16)

How many entities a declared query selects, by slot.

Arith(Arith, Box<CExpr>, Box<CExpr>)

Two numbers combined.

Normalize(Box<CExpr>)

A vector scaled to unit length.

Compare(Cmp, Box<CExpr>, Box<CExpr>)

Two values compared.

All(Vec<CExpr>)

True when every operand is true.

Any(Vec<CExpr>)

True when any operand is true.

Not(Box<CExpr>)

Logical negation.

Never

An expression the checker should have rejected. Evaluates to nothing.

Trait Implementations

impl Debug for CExpr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.