Struct Boundary 

pub struct Boundary {
    pub margin: u16,
    pub message: Option<String>,
    pub returns: bool,
}

A playable-region boundary declaration (DSL v0.6, spec-0013). The region itself is derived by the compiler (union of the final placed-piece AABBs, inflated horizontally by margin, unbounded upward, floored at the lowest placed block − 8) — never authored — so “every anchor is inside” is structural. Enforcement is a per-second clock that returns any player outside the region to the last checkpoint (dw:cp) with an actionbar message and a soft sound; no damage, no items lost.

Fields

margin: u16

Horizontal breathing room in blocks added around the derived region on every side (default 16). Range-checked to 0..=64 (DW0321).

message: Option<String>

Actionbar message shown on return. Absent = the compiler’s English default. When set, it is inventoried under l10n key world.boundary.message and is translated like every other player-facing string.

returns: bool

Whether the boundary returns a player who leaves it (spec-0092 §10). Default true: the per-second clock returns any player outside the region to the last checkpoint. false keeps the region — every proof that reads it reads the same box — and emits no clock: the creator’s switch for a world nobody can leave, where a return only fights a creator flying out to look at a far view. Legal only where the build proves no body can walk or swim out of the region (DW0960).

Trait Implementations

impl Clone for Boundary

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Boundary

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Boundary

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Boundary

impl JsonSchema for Boundary

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for Boundary

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Boundary

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Boundary