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-rw-r--r--ecs/src/component/single.rs98
1 files changed, 0 insertions, 98 deletions
diff --git a/ecs/src/component/single.rs b/ecs/src/component/single.rs
deleted file mode 100644
index a63dbe3..0000000
--- a/ecs/src/component/single.rs
+++ /dev/null
@@ -1,98 +0,0 @@
-use std::any::{type_name, Any, TypeId};
-use std::ops::{Deref, DerefMut};
-
-use crate::component::Component;
-use crate::system::{ComponentRefMut, NoInitParamFlag, Param as SystemParam, System};
-use crate::tuple::FilterExclude as TupleFilterExclude;
-use crate::WorldData;
-
-/// Holds a component which has a single instance and is shared globally.
-#[derive(Debug)]
-pub struct Single<'world, SingleComponent: Component>
-{
- single_component: ComponentRefMut<'world, SingleComponent>,
-}
-
-unsafe impl<'world, SingleComponent> SystemParam<'world>
- for Single<'world, SingleComponent>
-where
- SingleComponent: Component,
-{
- type Flags = NoInitParamFlag;
- type Input = TupleFilterExclude;
-
- fn initialize<SystemImpl>(
- _system: &mut impl System<'world, SystemImpl>,
- _input: Self::Input,
- )
- {
- }
-
- fn new<SystemImpl>(
- _system: &'world impl System<'world, SystemImpl>,
- world_data: &'world WorldData,
- ) -> Self
- {
- let single_component = world_data
- .single_component_storage
- .get::<SingleComponent>()
- .expect("Single component was not found in world")
- .write_nonblock()
- .unwrap_or_else(|_| {
- panic!(
- "Failed to aquire read-write lock to single component {}",
- type_name::<SingleComponent>()
- )
- });
-
- Self {
- single_component: ComponentRefMut::new(single_component),
- }
- }
-
- fn is_compatible<Other: SystemParam<'world>>() -> bool
- {
- let other_comparable = Other::get_comparable();
-
- let Some(comparable) = other_comparable.downcast_ref::<Comparable>() else {
- // The other system param is not Single
- return true;
- };
-
- TypeId::of::<SingleComponent>() != comparable.single_component_type_id
- }
-
- fn get_comparable() -> Box<dyn Any>
- {
- Box::new(Comparable {
- single_component_type_id: TypeId::of::<SingleComponent>(),
- })
- }
-}
-
-impl<'world, SingleComponent> Deref for Single<'world, SingleComponent>
-where
- SingleComponent: Component,
-{
- type Target = SingleComponent;
-
- fn deref(&self) -> &Self::Target
- {
- &self.single_component
- }
-}
-
-impl<'world, SingleComponent> DerefMut for Single<'world, SingleComponent>
-where
- SingleComponent: Component,
-{
- fn deref_mut(&mut self) -> &mut Self::Target
- {
- &mut self.single_component
- }
-}
-
-struct Comparable
-{
- single_component_type_id: TypeId,
-}