WIP prefabs loader

Cargo.toml

@@ -1,58 +1,3 @@
-[package]
+[workspace]
-name = "space-game"
+resolver = "2"
-version = "0.1.0"
+members = [ "engine/prefabs","game/main"]
-edition = "2024"
-
-[dependencies]
-# avian3d = { version = "0.3.0", features = [] }
-bevy = { version = "0.16.1", features = [] }
-# bevy_rapier3d = { version = "0.29.0", features = ["simd-stable", "parallel"] }
-bevy-inspector-egui = "0.31.0"
-bevy_asset_loader = "0.23.0"
-bevy_rapier3d = "0.30.0"
-
-[features]
-default = ["dev"]
-dev = [
-	"bevy/bevy_dev_tools",
-	"bevy/bevy_ui_debug",
-	"bevy/track_location",
-	"bevy/file_watcher",
-	"bevy/embedded_watcher",
-	"dev-viz"
-]
-dev-viz = []
-dev-phys = []
-
-[lints.clippy]
-# Bevy supplies arguments to systems via dependency injection, so it's natural for systems to
-# request more than 7 arguments, which would undesirably trigger this lint.
-too_many_arguments = "allow"
-# Queries may access many components, which would undesirably trigger this lint.
-type_complexity = "allow"
-# Make sure macros use their standard braces, such as `[]` for `bevy_ecs::children!`.
-nonstandard_macro_braces = "warn"
-needless_return = "allow"
-
-# Enable a small amount of optimization in debug mode
-[profile.dev]
-opt-level = 1
-
-# Enable high optimizations for dependencies (incl. Bevy), but not for our code:
-[profile.dev.package."*"]
-opt-level = 3
-
-[profile.release]
-codegen-units = 1
-lto = "thin"
-
-
-# Optimize for build time in CI.
-[profile.ci]
-inherits = "dev"
-opt-level = 0
-debug = "line-tables-only"
-codegen-units = 4
-
-[profile.ci.package."*"]
-opt-level = 0

engine/prefabs/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "prefabs"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+bevy = "0.16.1"
+serde = "1.0.219"
+typetag = "0.2.20"
+
+[dev-dependencies]
+ron = "0.10.1"

engine/prefabs/src/components.rs

@@ -0,0 +1,4 @@
+use bevy::prelude::*;
+
+#[derive(Component)]
+pub struct PrefabId(pub Entity);

engine/prefabs/src/lib.rs

@@ -0,0 +1,14 @@
+use bevy::app::Plugin;
+
+pub mod components;
+pub mod prefab;
+#[cfg(test)]
+mod tests;
+
+pub struct PrefabPlugin;
+
+impl Plugin for PrefabPlugin {
+	fn build(&self, app: &mut bevy::app::App) {
+		todo!()
+	}
+}

engine/prefabs/src/prefab.rs

@@ -0,0 +1,23 @@
+use bevy::{ecs::entity_disabling::Disabled, prelude::*};
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct PrefabAsset {
+	pub components: Vec<Box<dyn ComponentBuilder>>,
+}
+
+impl PrefabAsset {
+	pub fn build_prefab(&self, commands: &mut Commands) -> Entity {
+		let mut entity = commands.spawn(Disabled);
+		for builder in &self.components {
+			builder.insert(&mut entity);
+		}
+
+		return entity.id();
+	}
+}
+
+#[typetag::serde(tag = "type")]
+pub trait ComponentBuilder {
+	fn insert(&self, entity: &mut EntityCommands);
+}

engine/prefabs/src/tests.rs

@@ -0,0 +1,52 @@
+use bevy::{
+	ecs::{component::Component, system::EntityCommands},
+	math::{Vec3, VectorSpace},
+	render::view::PostProcessWrite,
+};
+use serde::{Deserialize, Serialize};
+
+use crate::prefab::{ComponentBuilder, PrefabAsset};
+
+#[derive(Component, Serialize, Deserialize)]
+struct Name {
+	pub name: String,
+}
+#[typetag::serde]
+impl ComponentBuilder for Name {
+	fn insert(&self, entity: &mut EntityCommands) {
+		todo!()
+	}
+}
+
+#[derive(Component, Serialize, Deserialize)]
+struct Position {
+	pub pos: Vec3,
+}
+
+#[typetag::serde]
+impl ComponentBuilder for Position {
+	fn insert(&self, entity: &mut EntityCommands) {
+		todo!()
+	}
+}
+
+#[test]
+fn serialize_test() {
+	let prefab = PrefabAsset {
+		components: vec![
+			Box::new(Position { pos: Vec3::X }),
+			Box::new(Name {
+				name: "Test".to_string(),
+			}),
+		],
+	};
+
+	let serialized = ron::to_string(&prefab);
+	assert!(serialized.is_ok());
+
+	let deserialize = ron::from_str::<PrefabAsset>(&serialized.unwrap());
+	assert!(deserialize.is_ok());
+
+	let loaded_asset = deserialize.unwrap();
+	assert!(loaded_asset.components.len() == prefab.components.len());
+}

game/main/Cargo.toml

@@ -0,0 +1,59 @@
+[package]
+name = "space-game"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+# avian3d = { version = "0.3.0", features = [] }
+bevy = { version = "0.16.1", features = [] }
+# bevy_rapier3d = { version = "0.29.0", features = ["simd-stable", "parallel"] }
+bevy-inspector-egui = "0.31.0"
+bevy_asset_loader = "0.23.0"
+bevy_rapier3d = "0.30.0"
+prefabs = { path = "../../engine/prefabs" }
+
+[features]
+default = ["dev"]
+dev = [
+	"bevy/bevy_dev_tools",
+	"bevy/bevy_ui_debug",
+	"bevy/track_location",
+	"bevy/file_watcher",
+	"bevy/embedded_watcher",
+	"dev-viz"
+]
+dev-viz = []
+dev-phys = []
+
+[lints.clippy]
+# Bevy supplies arguments to systems via dependency injection, so it's natural for systems to
+# request more than 7 arguments, which would undesirably trigger this lint.
+too_many_arguments = "allow"
+# Queries may access many components, which would undesirably trigger this lint.
+type_complexity = "allow"
+# Make sure macros use their standard braces, such as `[]` for `bevy_ecs::children!`.
+nonstandard_macro_braces = "warn"
+needless_return = "allow"
+
+# Enable a small amount of optimization in debug mode
+[profile.dev]
+opt-level = 1
+
+# Enable high optimizations for dependencies (incl. Bevy), but not for our code:
+[profile.dev.package."*"]
+opt-level = 3
+
+[profile.release]
+codegen-units = 1
+lto = "thin"
+
+
+# Optimize for build time in CI.
+[profile.ci]
+inherits = "dev"
+opt-level = 0
+debug = "line-tables-only"
+codegen-units = 4
+
+[profile.ci.package."*"]
+opt-level = 0