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component_registry: use FromResources trait instead of Default

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This commit is contained in:
Carter Anderson 2020-05-27 00:18:08 -07:00
parent da52b1b034
commit cb3a863366
4 changed files with 14 additions and 12 deletions
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13
crates/bevy_component_registry/src/component_registry.rs
View file

@ -1,12 +1,13 @@
use bevy_property::{Properties, Property, PropertyTypeRegistry};
use legion::{
prelude::{Entity, World},
prelude::{Entity, World, Resources},
storage::{Component, ComponentResourceSet, ComponentTypeId},
};
use std::{
collections::HashMap,
sync::{Arc, RwLock},
};
use bevy_app::FromResources;
#[derive(Clone, Default)]
pub struct PropertyTypeRegistryContext {
@ -28,7 +29,7 @@ pub struct ComponentRegistry {
impl ComponentRegistry {
pub fn register<T>(&mut self)
where
T: Properties + Component + Default,
T: Properties + Component + FromResources,
{
let registration = ComponentRegistration::of::<T>();
self.short_names
@ -58,18 +59,18 @@ impl ComponentRegistry {
#[derive(Clone)]
pub struct ComponentRegistration {
pub ty: ComponentTypeId,
pub component_add_fn: fn(&mut World, Entity, &dyn Property),
pub component_add_fn: fn(&mut World, resources: &Resources, Entity, &dyn Property),
pub component_properties_fn: fn(&ComponentResourceSet, usize) -> &dyn Properties,
pub short_name: &'static str,
}
impl ComponentRegistration {
pub fn of<T: Properties + Component + Default>() -> Self {
pub fn of<T: Properties + Component + FromResources>() -> Self {
let ty = ComponentTypeId::of::<T>();
Self {
ty,
component_add_fn: |world: &mut World, entity: Entity, property: &dyn Property| {
let mut component = T::default();
component_add_fn: |world: &mut World, resources: &Resources, entity: Entity, property: &dyn Property| {
let mut component = T::from_resources(resources);
component.apply(property);
world.add_component(entity, component).unwrap();
},

6
crates/bevy_component_registry/src/register_component.rs
View file

@ -3,12 +3,12 @@ use bevy_property::{Property, Properties};
use legion::storage::Component;
use serde::Deserialize;
use crate::{PropertyTypeRegistryContext, ComponentRegistryContext};
use bevy_app::AppBuilder;
use bevy_app::{FromResources, AppBuilder};
pub trait RegisterComponent {
fn register_component<T>(&mut self) -> &mut Self
where
T: Properties + Component + Default;
T: Properties + Component + FromResources;
fn register_property_type<T>(&mut self) -> &mut Self
where
T: Property + for<'de> Deserialize<'de>;
@ -17,7 +17,7 @@ pub trait RegisterComponent {
impl RegisterComponent for AppBuilder {
fn register_component<T>(&mut self) -> &mut Self
where
T: Properties + Component + Default,
T: Properties + Component + FromResources,
{
{
let registry_context = self

5
crates/bevy_scene/src/scene.rs
View file

@ -1,7 +1,7 @@
use anyhow::Result;
use bevy_component_registry::ComponentRegistry;
use bevy_property::DynamicProperties;
use legion::prelude::World;
use legion::prelude::{Resources, World};
use serde::Serialize;
use std::num::Wrapping;
use thiserror::Error;
@ -66,6 +66,7 @@ impl Scene {
pub fn add_to_world(
&self,
world: &mut World,
resources: &Resources,
component_registry: &ComponentRegistry,
) -> Result<(), SceneAddError> {
world.entity_allocator.push_next_ids(
@ -82,7 +83,7 @@ impl Scene {
.ok_or_else(|| SceneAddError::UnregisteredComponent {
type_name: component.type_name.to_string(),
})?;
(component_registration.component_add_fn)(world, entity, component);
(component_registration.component_add_fn)(world, resources, entity, component);
}
}

2
examples/scene/load_scene.rs
View file

@ -34,7 +34,7 @@ fn load_scene(world: &mut World, resources: &mut Resources) {
.unwrap();
let scene = scenes.get(&scene_handle).unwrap();
scene
.add_to_world(world, &component_registry.value.read().unwrap())
.add_to_world(world, resources, &component_registry.value.read().unwrap())
.unwrap();
}