Data nodes

Data nodes answer “what value?” They usually have no exec pins. Their colored wires feed branches, calls, returns, assignments, and other expressions without claiming a separate statement in the white flow path.

Pure expression

Purpose. Produces a value without owning statement order. Member access, conversion, array or struct construction, tuple operations, string interpolation, and other value-producing shapes use pure nodes.

Pin	Direction	Type
operand or source values	Input	Shape-specific typed values
result	Output	Inferred or declared result type

C#

playerBottom >= enemyTop - TopContactTolerance

Guide: Operators and expressions.

Literal

Purpose. Supplies a value directly. Eligible unwired data pins show an inline literal box; a separate literal node appears when the value is represented as its own source expression.

Pin	Direction	Type
value	Output	Literal type, such as int, float, bool, string, char, object, or struct

C#

0.5f

An unwired hollow pin has no value yet. A literal is a real value, not a default guessed by the graph.

Guide: Pills and literals.

Operators

Purpose. Combines or transforms values. Binary operators have left and right inputs; unary operators have one input. Comparison and logical operators produce Boolean output.

Pin	Direction	Type
left	Input	Operand type, binary only
right	Input	Compatible operand type, binary only
value	Input	Operand type, unary only
result	Output	Operator result type

C#

playerVerticalPosition <= fallRespawnHeight

Operators cover arithmetic, logical work, comparisons, and supported casts or conversions. Their header family stays pure green; the pin and wire colors still show the actual value types.

Guide: Operators and expressions.

Conditional

Purpose. Chooses one of two values without creating statement branches. The condition input is Boolean, and both value arms must produce a compatible result.

Pin	Direction	Type
condition	Input	bool
when true	Input	Result-compatible type
when false	Input	Result-compatible type
result	Output	Inferred common type

C#

var sprite = IsUnlocked ? _unlockedSprite : _lockedSprite;

Guide: Operators and expressions.

Null-aware

Purpose. Keeps null handling inside the value path. Null coalescing chooses a fallback value; null-conditional access stops member access when its receiver is null.

Pin	Direction	Type
value or target	Input	Nullable or reference type
fallback	Input	Compatible type, for ??
result	Output	Resolved result type

C#

var playerCollider = collision.otherCollider != null
    ? collision.otherCollider
    : _bodyCollider;

C#

_audio?.PlayCoin();

A null-aware call that has side effects still participates in exec flow as a call. The null-aware receiver or condition remains part of its data shape.

Guide: Operators and expressions.

Next

• Call and member nodes
• Colors
• Arrays, tuples, and ranges
• Supported C#