refactor(ecs): replace component::IsOptional enum with bool

4 files changed, 18 insertions, 54 deletions

diff --git a/ecs/src/archetype.rs b/ecs/src/archetype.rs
index 354d206..846e231 100644
--- a/ecs/src/archetype.rs
+++ b/ecs/src/archetype.rs
@@ -1,9 +1,6 @@
 use std::hash::{DefaultHasher, Hash, Hasher};
 
-use crate::component::{
-    IsOptional as ComponentIsOptional,
-    Metadata as ComponentMetadata,
-};
+use crate::component::Metadata as ComponentMetadata;
 
 /// Archetype ID.
 #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord)]
@@ -34,7 +31,7 @@ impl Id
                 .as_ref()
                 .iter()
                 .filter_map(|component_metadata| {
-                    if component_metadata.is_optional == ComponentIsOptional::Yes {
+                    if component_metadata.is_optional {
                         return None;
                     }
 
diff --git a/ecs/src/component.rs b/ecs/src/component.rs
index b0423c5..f5aa0d1 100644
--- a/ecs/src/component.rs
+++ b/ecs/src/component.rs
@@ -51,20 +51,19 @@ pub trait Component: SystemInput + Any + TypeName
     #[doc(hidden)]
     fn as_any(&self) -> &dyn Any;
 
-    /// Whether the component `self` is optional. Returns the same value as
-    /// [`Component::is_optional`].
-    fn self_is_optional(&self) -> IsOptional
+    /// Returns whether the component `self` is optional.
+    fn self_is_optional(&self) -> bool
     {
-        IsOptional::No
+        false
     }
 
     /// Returns whether this component is optional.
     #[must_use]
-    fn is_optional() -> IsOptional
+    fn is_optional() -> bool
     where
         Self: Sized,
     {
-        IsOptional::No
+        false
     }
 }
 
@@ -139,14 +138,14 @@ where
         self
     }
 
-    fn self_is_optional(&self) -> IsOptional
+    fn self_is_optional(&self) -> bool
     {
-        Self::is_optional()
+        true
     }
 
-    fn is_optional() -> IsOptional
+    fn is_optional() -> bool
     {
-        IsOptional::Yes
+        true
     }
 }
 
@@ -222,7 +221,7 @@ where
 pub struct Metadata
 {
     pub id: Uid,
-    pub is_optional: IsOptional,
+    pub is_optional: bool,
 }
 
 impl Metadata
@@ -244,26 +243,6 @@ impl Metadata
     }
 }
 
-/// Whether or not a `Component` is optional.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum IsOptional
-{
-    Yes,
-    No,
-}
-
-impl From<bool> for IsOptional
-{
-    fn from(is_optional: bool) -> Self
-    {
-        if is_optional {
-            return IsOptional::Yes;
-        }
-
-        IsOptional::No
-    }
-}
-
 pub trait FromOptionalMut<'comp>
 {
     fn from_optional_mut_component(
diff --git a/ecs/src/component/storage.rs b/ecs/src/component/storage.rs
index dd9e383..0475bf1 100644
--- a/ecs/src/component/storage.rs
+++ b/ecs/src/component/storage.rs
@@ -7,11 +7,7 @@ use std::vec::IntoIter as OwnedVecIter;
 use hashbrown::{HashMap, HashSet};
 
 use crate::archetype::Id as ArchetypeId;
-use crate::component::{
-    Component,
-    IsOptional as ComponentIsOptional,
-    Metadata as ComponentMetadata,
-};
+use crate::component::{Component, Metadata as ComponentMetadata};
 use crate::type_name::TypeName;
 use crate::uid::Uid;
 use crate::EntityComponent;
@@ -548,7 +544,7 @@ where
         .filter_map(|item| {
             let component_metadata = item.borrow();
 
-            if component_metadata.is_optional == ComponentIsOptional::Yes {
+            if component_metadata.is_optional {
                 return None;
             }
 
@@ -565,11 +561,7 @@ mod tests
 
     use super::Storage;
     use crate::archetype::Id as ArchetypeId;
-    use crate::component::{
-        Component,
-        IsOptional as ComponentIsOptional,
-        Metadata as ComponentMetadata,
-    };
+    use crate::component::{Component, Metadata as ComponentMetadata};
     use crate::uid::{Kind as UidKind, Uid};
 
     #[derive(Debug, Component)]
@@ -638,11 +630,11 @@ mod tests
         let mut components_metadata = [
             ComponentMetadata {
                 id: HealthPotion::id(),
-                is_optional: ComponentIsOptional::No,
+                is_optional: false,
             },
             ComponentMetadata {
                 id: Hookshot::id(),
-                is_optional: ComponentIsOptional::No,
+                is_optional: false,
             },
         ];
 
diff --git a/ecs/src/lib.rs b/ecs/src/lib.rs
index 5d9df9a..ae3e191 100644
--- a/ecs/src/lib.rs
+++ b/ecs/src/lib.rs
@@ -13,7 +13,6 @@ use crate::actions::Action;
 use crate::component::storage::Storage as ComponentStorage;
 use crate::component::{
     Component,
-    IsOptional as ComponentIsOptional,
     Metadata as ComponentMetadata,
     RefSequence as ComponentRefSequence,
     Sequence as ComponentSequence,
@@ -441,10 +440,7 @@ impl World
     {
         let query = self.flexible_query([
             ComponentMetadata::of::<SystemComponent>(),
-            ComponentMetadata {
-                id: event_id,
-                is_optional: ComponentIsOptional::No,
-            },
+            ComponentMetadata { id: event_id, is_optional: false },
         ]);
 
         for (system,) in query