Renamed a few objects

Cargo.lock

@@ -581,9 +581,9 @@ dependencies = [
  "cgmath",
  "galactica-constants",
  "galactica-content",
- "galactica-gameobject",
+ "galactica-galaxy",
  "galactica-render",
- "galactica-world",
+ "galactica-systemsim",
  "pollster",
  "wgpu",
  "winit",
@@ -608,7 +608,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "galactica-gameobject"
+name = "galactica-galaxy"
 version = "0.0.0"
 dependencies = [
  "cgmath",
@@ -637,9 +637,9 @@ dependencies = [
  "cgmath",
  "galactica-constants",
  "galactica-content",
- "galactica-gameobject",
+ "galactica-galaxy",
  "galactica-packer",
- "galactica-world",
+ "galactica-systemsim",
  "image",
  "rand",
  "wgpu",
@@ -647,13 +647,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "galactica-world"
+name = "galactica-systemsim"
 version = "0.0.0"
 dependencies = [
  "cgmath",
  "crossbeam",
  "galactica-content",
- "galactica-gameobject",
+ "galactica-galaxy",
  "nalgebra",
  "rand",
  "rapier2d",

Cargo.toml

@@ -45,8 +45,8 @@ readme = ""
 galactica-constants = { path = "crates/constants" }
 galactica-content = { path = "crates/content" }
 galactica-render = { path = "crates/render" }
-galactica-world = { path = "crates/world" }
+galactica-systemsim = { path = "crates/systemsim" }
-galactica-gameobject = { path = "crates/gameobject" }
+galactica-galaxy = { path = "crates/galaxy" }
 galactica-packer = { path = "crates/packer" }
 galactica = { path = "crates/galactica" }
 

TODO.md

@@ -1,12 +1,7 @@
 ## Specific Jobs
  - Start documenting
  - Check for handle leaks
- - Rename and crtl-f comments
-   - gameobject and world
-   - behavior and personality
-   - ship (content) / ship (data) / ship (world)
  - Don't allocate each frame
-
  - UI: text arranger
  - Sound system
  - Ship death debris

crates/galactica/Cargo.toml

@@ -24,8 +24,8 @@ workspace = true
 galactica-content = { workspace = true }
 galactica-render = { workspace = true }
 galactica-constants = { workspace = true }
-galactica-world = { workspace = true }
+galactica-systemsim = { workspace = true }
-galactica-gameobject = { workspace = true }
+galactica-galaxy = { workspace = true }
 
 winit = { workspace = true }
 wgpu = { workspace = true }

crates/galactica/src/game.rs

@@ -1,4 +1,5 @@
-use object::{ship::ShipPersonality, GameData, GameShipHandle};
+use galactica_content::{Content, FactionHandle, OutfitHandle, ShipHandle, SystemHandle};
+use galactica_galaxy::{ship::ShipPersonality, Galaxy, GxShipHandle};
 use std::time::Instant;
 use winit::event::{ElementState, MouseButton, MouseScrollDelta, TouchPhase, VirtualKeyCode};
 
@@ -6,70 +7,66 @@ use crate::camera::Camera;
 use crate::inputstatus::InputStatus;
 
 use galactica_constants;
-use galactica_content as content;
-use galactica_gameobject as object;
 use galactica_render::RenderState;
-use galactica_world::{objects::ShipControls, util, ParticleBuilder, StepResources, World};
+use galactica_systemsim::{objects::ShipControls, util, ParticleBuilder, StepResources, SystemSim};
 
 pub struct Game {
 	input: InputStatus,
 	last_update: Instant,
-	player: GameShipHandle,
+	player: GxShipHandle,
 	paused: bool,
 	time_scale: f32,
 	start_instant: Instant,
 	camera: Camera,
 
-	// TODO: include system in world
+	galaxy: Galaxy,
-	//system: object::System,
+	content: Content,
-	gamedata: GameData,
+	systemsim: SystemSim,
 
-	content: content::Content,
-	world: World,
 	new_particles: Vec<ParticleBuilder>,
 }
 
 impl Game {
-	pub fn new(ct: content::Content) -> Self {
+	pub fn new(ct: Content) -> Self {
-		let mut gamedata = GameData::new(&ct);
+		let mut galaxy = Galaxy::new(&ct);
 
-		let player = gamedata.create_ship(
+		let player = galaxy.create_ship(
 			&ct,
-			content::ShipHandle { index: 0 },
+			ShipHandle { index: 0 },
-			content::FactionHandle { index: 0 },
+			FactionHandle { index: 0 },
 			ShipPersonality::Player,
-			&content::SystemHandle { index: 0 },
+			&SystemHandle { index: 0 },
 		);
-		let s = gamedata.get_ship_mut(player).unwrap();
+		let s = galaxy.get_ship_mut(player).unwrap();
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 0 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 0 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 1 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 1 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 2 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 2 }));
 
-		let a = gamedata.create_ship(
+		let a = galaxy.create_ship(
 			&ct,
-			content::ShipHandle { index: 0 },
+			ShipHandle { index: 0 },
-			content::FactionHandle { index: 1 },
+			FactionHandle { index: 1 },
 			ShipPersonality::Dummy,
-			&content::SystemHandle { index: 0 },
+			&SystemHandle { index: 0 },
 		);
-		let s = gamedata.get_ship_mut(a).unwrap();
+		let s = galaxy.get_ship_mut(a).unwrap();
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 0 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 0 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 1 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 1 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 2 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 2 }));
 
-		let a = gamedata.create_ship(
+		let a = galaxy.create_ship(
 			&ct,
-			content::ShipHandle { index: 0 },
+			ShipHandle { index: 0 },
-			content::FactionHandle { index: 0 },
+			FactionHandle { index: 0 },
 			ShipPersonality::Point,
-			&content::SystemHandle { index: 0 },
+			&SystemHandle { index: 0 },
 		);
-		let s = gamedata.get_ship_mut(a).unwrap();
+		let s = galaxy.get_ship_mut(a).unwrap();
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 0 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 0 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 1 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 1 }));
-		s.add_outfit(&ct.get_outfit(content::OutfitHandle { index: 2 }));
+		s.add_outfit(&ct.get_outfit(OutfitHandle { index: 2 }));
 
-		let physics = World::new(&ct, &gamedata, content::SystemHandle { index: 0 });
+		let physics = SystemSim::new(&ct, &galaxy, SystemHandle { index: 0 });
 
 		Game {
 			last_update: Instant::now(),
@@ -85,8 +82,8 @@ impl Game {
 			//system: object::System::new(&ct, SystemHandle { index: 0 }),
 			paused: false,
 			time_scale: 1.0,
-			world: physics,
+			systemsim: physics,
-			gamedata,
+			galaxy,
 			content: ct,
 			new_particles: Vec::new(),
 		}
@@ -120,9 +117,9 @@ impl Game {
 	pub fn update(&mut self) {
 		let t: f32 = self.last_update.elapsed().as_secs_f32() * self.time_scale;
 
-		self.gamedata.step(t);
+		self.galaxy.step(t);
 
-		self.world.step(StepResources {
+		self.systemsim.step(StepResources {
 			player: self.player,
 			player_controls: ShipControls {
 				left: self.input.key_left,
@@ -131,7 +128,7 @@ impl Game {
 				guns: self.input.key_guns,
 			},
 			ct: &self.content,
-			dt: &mut self.gamedata,
+			gx: &mut self.galaxy,
 			particles: &mut self.new_particles,
 			t,
 		});
@@ -143,8 +140,8 @@ impl Game {
 		}
 
 		self.camera.pos = {
-			let o = self.world.get_ship(self.player).unwrap();
+			let o = self.systemsim.get_ship(self.player).unwrap();
-			let r = self.world.get_rigid_body(o.rigid_body).unwrap();
+			let r = self.systemsim.get_rigid_body(o.rigid_body).unwrap();
 			util::rigidbody_position(r)
 		};
 
@@ -157,11 +154,11 @@ impl Game {
 			camera_zoom: self.camera.zoom,
 			current_time: self.start_instant.elapsed().as_secs_f32(),
 			content: &self.content,
-			world: &self.world, // TODO: maybe system should be stored here?
+			systemsim: &self.systemsim, // TODO: maybe system should be stored here?
 			particles: &mut self.new_particles,
 			player_data: self.player,
-			data: &self.gamedata,
+			data: &self.galaxy,
-			current_system: content::SystemHandle { index: 0 },
+			current_system: SystemHandle { index: 0 },
 		}
 	}
 }

crates/galactica/src/main.rs

@@ -2,10 +2,9 @@ mod camera;
 mod game;
 mod inputstatus;
 
-pub use galactica_content as content;
-
 use anyhow::{bail, Result};
-use galactica_constants::{self, ASSET_CACHE};
+use galactica_constants::{ASSET_CACHE, CONTENT_ROOT, IMAGE_ROOT, STARFIELD_SPRITE_NAME};
+use galactica_content::Content;
 use std::{
 	fs,
 	path::{Path, PathBuf},
@@ -27,11 +26,11 @@ fn main() -> Result<()> {
 	}
 
 	// TODO: pretty error if missing
-	let content = content::Content::load_dir(
+	let content = Content::load_dir(
-		PathBuf::from(galactica_constants::CONTENT_ROOT),
+		PathBuf::from(CONTENT_ROOT),
-		PathBuf::from(galactica_constants::IMAGE_ROOT),
+		PathBuf::from(IMAGE_ROOT),
 		atlas_index,
-		galactica_constants::STARFIELD_SPRITE_NAME.to_owned(),
+		STARFIELD_SPRITE_NAME.to_owned(),
 	)?;
 
 	let event_loop = EventLoop::new();

crates/galaxy/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "galactica-gameobject"
+name = "galactica-galaxy"
 description = "Galactica's game data manager"
 categories = { workspace = true }
 keywords = { workspace = true }

crates/galaxy/src/galaxy.rs

@@ -1,30 +1,30 @@
 use std::collections::HashMap;
 
-use crate::{handles::GameShipHandle, ship::Ship, ship::ShipPersonality};
+use crate::{handles::GxShipHandle, ship::GxShip, ship::ShipPersonality};
-use galactica_content as content;
+use galactica_content::{Content, FactionHandle, ShipHandle, SystemHandle};
 
 /// Keeps track of all objects in the galaxy.
 /// This struct does NO physics, it keeps track of data exclusively.
 #[derive(Debug)]
-pub struct GameData {
+pub struct Galaxy {
 	/// Universal counter.
 	/// Used to create unique handles for game objects.
 	index: u64,
 
 	/// All ships in the galaxy
-	ships: HashMap<GameShipHandle, Ship>,
+	ships: HashMap<GxShipHandle, GxShip>,
 
 	/// Ships indexed by the system they're in.
 	/// A ship must always be in exactly one system.
-	system_ship_table: HashMap<content::SystemHandle, Vec<GameShipHandle>>,
+	system_ship_table: HashMap<SystemHandle, Vec<GxShipHandle>>,
 
 	/// Systems indexed by which ships they contain.
 	/// A ship must always be in exactly one system.
-	ship_system_table: HashMap<GameShipHandle, content::SystemHandle>,
+	ship_system_table: HashMap<GxShipHandle, SystemHandle>,
 }
 
-impl GameData {
+impl Galaxy {
-	pub fn new(ct: &content::Content) -> Self {
+	pub fn new(ct: &Content) -> Self {
 		Self {
 			system_ship_table: ct.iter_systems().map(|s| (s, Vec::new())).collect(),
 			ship_system_table: HashMap::new(),
@@ -36,20 +36,20 @@ impl GameData {
 	/// Spawn a ship
 	pub fn create_ship(
 		&mut self,
-		ct: &content::Content,
+		ct: &Content,
-		ship: content::ShipHandle,
+		ship: ShipHandle,
-		faction: content::FactionHandle,
+		faction: FactionHandle,
 		personality: ShipPersonality,
-		system: &content::SystemHandle,
+		system: &SystemHandle,
-	) -> GameShipHandle {
+	) -> GxShipHandle {
-		let handle = GameShipHandle {
+		let handle = GxShipHandle {
 			index: self.index,
 			content: ship,
 		};
 		self.index += 1;
 
 		self.ships
-			.insert(handle, Ship::new(ct, handle, ship, faction, personality));
+			.insert(handle, GxShip::new(ct, handle, ship, faction, personality));
 		self.system_ship_table.get_mut(system).unwrap().push(handle);
 		self.ship_system_table.insert(handle, *system);
 
@@ -59,7 +59,7 @@ impl GameData {
 	pub fn step(&mut self, t: f32) {
 		// TODO: don't allocate on step, need a better
 		// way to satisfy the borrow checker.
-		// Same needs to be done in the `world` crate.
+		// Same needs to be done in the `systemsim` crate.
 		let mut to_remove = Vec::new();
 		for (_, s) in &mut self.ships {
 			s.step(t);
@@ -83,16 +83,16 @@ impl GameData {
 }
 
 // Public getters
-impl GameData {
+impl Galaxy {
-	pub fn get_ship(&self, handle: GameShipHandle) -> Option<&Ship> {
+	pub fn get_ship(&self, handle: GxShipHandle) -> Option<&GxShip> {
 		self.ships.get(&handle)
 	}
 
-	pub fn get_ship_mut(&mut self, handle: GameShipHandle) -> Option<&mut Ship> {
+	pub fn get_ship_mut(&mut self, handle: GxShipHandle) -> Option<&mut GxShip> {
 		self.ships.get_mut(&handle)
 	}
 
-	pub fn iter_ships(&self) -> impl Iterator<Item = &Ship> {
+	pub fn iter_ships(&self) -> impl Iterator<Item = &GxShip> {
 		self.ships.values()
 	}
 }

crates/galaxy/src/handles.rs

@@ -4,7 +4,7 @@ use galactica_content::ShipHandle;
 
 /// A lightweight representation of a ship in the galaxy
 #[derive(Debug, Clone, Copy)]
-pub struct GameShipHandle {
+pub struct GxShipHandle {
 	/// This ship's unique index
 	pub(crate) index: u64,
 
@@ -13,20 +13,20 @@ pub struct GameShipHandle {
 	pub(crate) content: ShipHandle,
 }
 
-impl GameShipHandle {
+impl GxShipHandle {
 	pub fn content_handle(&self) -> ShipHandle {
 		self.content
 	}
 }
 
-impl Hash for GameShipHandle {
+impl Hash for GxShipHandle {
 	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 		self.index.hash(state)
 	}
 }
 
-impl Eq for GameShipHandle {}
+impl Eq for GxShipHandle {}
-impl PartialEq for GameShipHandle {
+impl PartialEq for GxShipHandle {
 	fn eq(&self, other: &Self) -> bool {
 		self.index.eq(&other.index)
 	}

crates/galaxy/src/lib.rs

@@ -0,0 +1,11 @@
+//! This module keeps track of the galaxy state.
+//! It is also responsible for ship stats, outfits, etc.
+//!
+//! `galaxy` does not provide any simulation logic---that is done in seperate crates.
+
+mod galaxy;
+mod handles;
+pub mod ship;
+
+pub use galaxy::*;
+pub use handles::*;

crates/galaxy/src/ship/outfitset.rs

@@ -1,7 +1,6 @@
 use std::collections::HashMap;
 
-use content::{GunPoint, OutfitHandle, OutfitSpace, SpriteHandle};
+use galactica_content::{Content, GunPoint, Outfit, OutfitHandle, OutfitSpace, SpriteHandle};
-use galactica_content as content;
 
 /// Possible outcomes when adding an outfit
 pub enum OutfitAddResult {
@@ -89,7 +88,7 @@ impl OutfitSet {
 		}
 	}
 
-	pub(super) fn add(&mut self, o: &content::Outfit) -> OutfitAddResult {
+	pub(super) fn add(&mut self, o: &Outfit) -> OutfitAddResult {
 		if !(self.total_space - self.used_space).can_contain(&o.space) {
 			return OutfitAddResult::NotEnoughSpace("TODO".to_string());
 		}
@@ -129,7 +128,7 @@ impl OutfitSet {
 		return OutfitAddResult::Ok;
 	}
 
-	pub(super) fn remove(&mut self, o: &content::Outfit) -> OutfitRemoveResult {
+	pub(super) fn remove(&mut self, o: &Outfit) -> OutfitRemoveResult {
 		if !self.outfits.contains_key(&o.handle) {
 			return OutfitRemoveResult::NotExist;
 		} else {
@@ -161,7 +160,7 @@ impl OutfitSet {
 	}
 
 	// TODO: pick these better
-	pub fn get_flare_sprite(&self, ct: &content::Content) -> Option<SpriteHandle> {
+	pub fn get_flare_sprite(&self, ct: &Content) -> Option<SpriteHandle> {
 		for i in self.outfits.keys() {
 			let c = ct.get_outfit(*i);
 			if c.engine_flare_sprite.is_some() {

crates/galaxy/src/ship/personality.rs

@@ -1,6 +1,5 @@
 /// Computer-controlled ship behavior variants.
-/// This is just a list, actual physics-aware
+/// This is just a list, actual state-aware behaviors are implemented in each simulation crate.
-/// behaviors are implemented in [`galactica-behavior`]
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ShipPersonality {
 	/// This ship is controlled by a player

crates/galaxy/src/ship/ship.rs

@@ -1,18 +1,17 @@
 use std::{collections::HashMap, time::Instant};
 
-use crate::GameShipHandle;
+use crate::GxShipHandle;
 
 use super::{OutfitSet, ShipPersonality};
-use content::GunPoint;
+use galactica_content::{Content, FactionHandle, GunPoint, Outfit, ShipHandle};
-use galactica_content as content;
 use rand::{rngs::ThreadRng, Rng};
 
 #[derive(Debug)]
-pub struct Ship {
+pub struct GxShip {
 	// Metadata values
-	handle: GameShipHandle,
+	handle: GxShipHandle,
-	ct_handle: content::ShipHandle,
+	ct_handle: ShipHandle,
-	faction: content::FactionHandle,
+	faction: FactionHandle,
 	outfits: OutfitSet,
 
 	personality: ShipPersonality,
@@ -29,16 +28,16 @@ pub struct Ship {
 	last_hit: Instant,
 }
 
-impl Ship {
+impl GxShip {
 	pub(crate) fn new(
-		ct: &content::Content,
+		ct: &Content,
-		handle: GameShipHandle,
+		handle: GxShipHandle,
-		ct_handle: content::ShipHandle,
+		ct_handle: ShipHandle,
-		faction: content::FactionHandle,
+		faction: FactionHandle,
 		personality: ShipPersonality,
 	) -> Self {
 		let s = ct.get_ship(ct_handle);
-		Ship {
+		GxShip {
 			handle,
 			ct_handle,
 			faction,
@@ -55,14 +54,14 @@ impl Ship {
 	}
 
 	/// Add an outfit to this ship
-	pub fn add_outfit(&mut self, o: &content::Outfit) -> super::OutfitAddResult {
+	pub fn add_outfit(&mut self, o: &Outfit) -> super::OutfitAddResult {
 		let r = self.outfits.add(o);
 		self.shields = self.outfits.get_shield_strength();
 		return r;
 	}
 
 	/// Remove an outfit from this ship
-	pub fn remove_outfit(&mut self, o: &content::Outfit) -> super::OutfitRemoveResult {
+	pub fn remove_outfit(&mut self, o: &Outfit) -> super::OutfitRemoveResult {
 		self.outfits.remove(o)
 	}
 
@@ -75,7 +74,7 @@ impl Ship {
 	/// Will panic if `which` isn't a point on this ship.
 	/// Returns `true` if this gun was fired,
 	/// and `false` if it is on cooldown or empty.
-	pub fn fire_gun(&mut self, ct: &content::Content, which: &GunPoint) -> bool {
+	pub fn fire_gun(&mut self, ct: &Content, which: &GunPoint) -> bool {
 		let c = self.gun_cooldowns.get_mut(which).unwrap();
 
 		if *c > 0.0 {
@@ -134,14 +133,14 @@ impl Ship {
 }
 
 // Misc getters, so internal state is untouchable
-impl Ship {
+impl GxShip {
 	/// Get a handle to this ship game object
-	pub fn get_handle(&self) -> GameShipHandle {
+	pub fn get_handle(&self) -> GxShipHandle {
 		self.handle
 	}
 
 	/// Get a handle to this ship's content
-	pub fn get_content(&self) -> content::ShipHandle {
+	pub fn get_content(&self) -> ShipHandle {
 		self.ct_handle
 	}
 
@@ -168,12 +167,12 @@ impl Ship {
 	}
 
 	/// Get this ship's faction
-	pub fn get_faction(&self) -> content::FactionHandle {
+	pub fn get_faction(&self) -> FactionHandle {
 		self.faction
 	}
 
 	/// Get this ship's content handle
-	pub fn get_ship(&self) -> content::ShipHandle {
+	pub fn get_ship(&self) -> ShipHandle {
 		self.ct_handle
 	}
 }

crates/gameobject/src/lib.rs

@@ -1,12 +0,0 @@
-//! This module handles all game data: ship damage, outfit stats, etc.
-//!
-//! The code here handles game *data* exclusively: it keeps track of the status
-//! of every ship in the game, but it has no understanding of physics.
-//! That is done in `galactica_world`.
-
-mod gamedata;
-mod handles;
-pub mod ship;
-
-pub use gamedata::*;
-pub use handles::*;

crates/render/Cargo.toml

@@ -20,8 +20,8 @@ workspace = true
 galactica-content = { workspace = true }
 galactica-constants = { workspace = true }
 galactica-packer = { workspace = true }
-galactica-world = { workspace = true }
+galactica-systemsim = { workspace = true }
-galactica-gameobject = { workspace = true }
+galactica-galaxy = { workspace = true }
 
 anyhow = { workspace = true }
 cgmath = { workspace = true }

crates/render/src/gpustate/hud.rs

@@ -3,7 +3,7 @@
 use std::f32::consts::TAU;
 
 use cgmath::{Deg, InnerSpace, Point2, Rad, Vector2};
-use galactica_world::util;
+use galactica_systemsim::util;
 
 use crate::{
 	vertexbuffer::{
@@ -22,9 +22,9 @@ impl GPUState {
 		let system_object_scale = 1.0 / 600.0;
 		let ship_scale = 1.0 / 10.0;
 
-		let player_world_object = state.world.get_ship(state.player_data).unwrap();
+		let player_world_object = state.systemsim.get_ship(state.player_data).unwrap();
 		let player_body = state
-			.world
+			.systemsim
 			.get_rigid_body(player_world_object.rigid_body)
 			.unwrap();
 
@@ -103,7 +103,7 @@ impl GPUState {
 		}
 
 		// Draw ships
-		for (s, r) in state.world.iter_ship_body() {
+		for (s, r) in state.systemsim.iter_ship_body() {
 			// This will be None if this ship is dead.
 			// Stays around while the physics system runs a collapse sequence
 			let color = match state.data.get_ship(s.data_handle) {
@@ -291,7 +291,7 @@ impl GPUState {
 			panic!("UI limit exceeded!")
 		}
 
-		let player_world_object = state.world.get_ship(state.player_data).unwrap();
+		let player_world_object = state.systemsim.get_ship(state.player_data).unwrap();
 
 		let data = state
 			.data

crates/render/src/gpustate/mod.rs

@@ -3,13 +3,13 @@ use bytemuck;
 use cgmath::Point2;
 use galactica_constants;
 
+use galactica_content::Content;
 use rand::seq::SliceRandom;
 use std::{iter, rc::Rc};
 use wgpu::{self, BufferAddress};
 use winit::{self, window::Window};
 
 use crate::{
-	content,
 	globaluniform::{GlobalDataContent, GlobalUniform},
 	pipeline::PipelineBuilder,
 	starfield::Starfield,
@@ -27,7 +27,7 @@ use crate::{
 
 // Additional implementaitons for GPUState
 mod hud;
-mod world;
+mod systemsim;
 
 /// A high-level GPU wrapper. Consumes game state,
 /// produces pretty pictures.
@@ -108,7 +108,7 @@ fn preprocess_shader(
 
 impl GPUState {
 	/// Make a new GPUState that draws on `window`
-	pub async fn new(window: Window, ct: &content::Content) -> Result<Self> {
+	pub async fn new(window: Window, ct: &Content) -> Result<Self> {
 		let window_size = window.inner_size();
 		let window_aspect = window_size.width as f32 / window_size.height as f32;
 
@@ -364,9 +364,9 @@ impl GPUState {
 		// Order matters, it determines what is drawn on top.
 		// The order inside ships and projectiles doesn't matter,
 		// but ships should always be under projectiles.
-		self.world_push_system(state, (clip_ne, clip_sw));
+		self.sysim_push_system(state, (clip_ne, clip_sw));
-		self.world_push_ship(state, (clip_ne, clip_sw));
+		self.sysim_push_ship(state, (clip_ne, clip_sw));
-		self.world_push_projectile(state, (clip_ne, clip_sw));
+		self.sysim_push_projectile(state, (clip_ne, clip_sw));
 
 		self.hud_add_radar(state);
 		self.hud_add_status(state);

crates/render/src/gpustate/systemsim.rs

@@ -1,8 +1,8 @@
-//! GPUState routines for drawing the world
+//! GPUState routines for drawing items in a systemsim
 
 use bytemuck;
 use cgmath::{EuclideanSpace, InnerSpace, Point2, Vector2};
-use galactica_world::util;
+use galactica_systemsim::util;
 
 use crate::{
 	globaluniform::ObjectData,
@@ -11,14 +11,14 @@ use crate::{
 };
 
 impl GPUState {
-	pub(super) fn world_push_ship(
+	pub(super) fn sysim_push_ship(
 		&mut self,
 		state: &RenderState,
 		// NE and SW corners of screen
 		screen_clip: (Point2<f32>, Point2<f32>),
 	) {
-		for s in state.world.iter_ships() {
+		for s in state.systemsim.iter_ships() {
-			let r = state.world.get_rigid_body(s.rigid_body).unwrap();
+			let r = state.systemsim.get_rigid_body(s.rigid_body).unwrap();
 			let ship_pos = util::rigidbody_position(&r);
 			let ship_rot = util::rigidbody_rotation(r);
 			let ship_ang = -ship_rot.angle(Vector2 { x: 0.0, y: 1.0 }); // TODO: inconsistent angles. Fix!
@@ -129,14 +129,14 @@ impl GPUState {
 		}
 	}
 
-	pub(super) fn world_push_projectile(
+	pub(super) fn sysim_push_projectile(
 		&mut self,
 		state: &RenderState,
 		// NE and SW corners of screen
 		screen_clip: (Point2<f32>, Point2<f32>),
 	) {
-		for p in state.world.iter_projectiles() {
+		for p in state.systemsim.iter_projectiles() {
-			let r = state.world.get_rigid_body(p.rigid_body).unwrap();
+			let r = state.systemsim.get_rigid_body(p.rigid_body).unwrap();
 			let proj_pos = util::rigidbody_position(&r);
 			let proj_rot = util::rigidbody_rotation(r);
 			let proj_ang = -proj_rot.angle(Vector2 { x: 1.0, y: 0.0 });
@@ -201,7 +201,7 @@ impl GPUState {
 		}
 	}
 
-	pub(super) fn world_push_system(
+	pub(super) fn sysim_push_system(
 		&mut self,
 		state: &RenderState,
 		// NE and SW corners of screen

crates/render/src/lib.rs

@@ -17,7 +17,6 @@ mod texturearray;
 mod vertexbuffer;
 
 pub use anchoredposition::PositionAnchor;
-use galactica_content as content;
 pub use gpustate::GPUState;
 pub use renderstate::RenderState;
 

crates/render/src/renderstate.rs

@@ -1,7 +1,7 @@
 use cgmath::Point2;
 use galactica_content::{Content, SystemHandle};
-use galactica_gameobject::{GameData, GameShipHandle};
+use galactica_galaxy::{Galaxy, GxShipHandle};
-use galactica_world::{ParticleBuilder, World};
+use galactica_systemsim::{ParticleBuilder, SystemSim};
 
 /// Bundles parameters passed to a single call to GPUState::render
 pub struct RenderState<'a> {
@@ -9,7 +9,7 @@ pub struct RenderState<'a> {
 	pub camera_pos: Point2<f32>,
 
 	/// Player ship data
-	pub player_data: GameShipHandle,
+	pub player_data: GxShipHandle,
 
 	/// The system we're currently in
 	pub current_system: SystemHandle,
@@ -18,7 +18,7 @@ pub struct RenderState<'a> {
 	pub camera_zoom: f32,
 
 	/// The world state to render
-	pub world: &'a World,
+	pub systemsim: &'a SystemSim,
 
 	// TODO: handle overflow. is it a problem?
 	/// The current time, in seconds
@@ -28,7 +28,7 @@ pub struct RenderState<'a> {
 	pub content: &'a Content,
 
 	/// Game data
-	pub data: &'a GameData,
+	pub data: &'a Galaxy,
 
 	/// Particles to spawn during this frame
 	pub particles: &'a mut Vec<ParticleBuilder>,

crates/render/src/texturearray.rs

@@ -1,10 +1,8 @@
-use crate::{
+use crate::globaluniform::{AtlasArray, AtlasImageLocation, SpriteData, SpriteDataArray};
-	content,
-	globaluniform::{AtlasArray, AtlasImageLocation, SpriteData, SpriteDataArray},
-};
 use anyhow::Result;
 use bytemuck::Zeroable;
 use galactica_constants::ASSET_CACHE;
+use galactica_content::Content;
 use galactica_packer::SpriteAtlasImage;
 use image::GenericImageView;
 use std::{fs::File, io::Read, num::NonZeroU32, path::Path};
@@ -51,7 +49,7 @@ impl RawTexture {
 			view_formats: &[],
 		});
 
-		let view = texture.create_view(&wgpu::TextureViewDescriptor::default());
+		let view = texture.create_view(&Default::default());
 
 		queue.write_texture(
 			wgpu::ImageCopyTexture {
@@ -91,7 +89,7 @@ pub struct TextureArray {
 }
 
 impl TextureArray {
-	pub fn new(device: &wgpu::Device, queue: &wgpu::Queue, ct: &content::Content) -> Result<Self> {
+	pub fn new(device: &wgpu::Device, queue: &wgpu::Queue, ct: &Content) -> Result<Self> {
 		// Load all textures
 		let mut texture_data = Vec::new();
 

crates/systemsim/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
-name = "galactica-world"
+name = "galactica-systemsim"
-description = "World interactions for Galactica"
+description = "Physics interactions for Galactica"
 categories = { workspace = true }
 keywords = { workspace = true }
 version = { workspace = true }
@@ -18,7 +18,7 @@ workspace = true
 
 [dependencies]
 galactica-content = { workspace = true }
-galactica-gameobject = { workspace = true }
+galactica-galaxy = { workspace = true }
 
 rapier2d = { workspace = true }
 nalgebra = { workspace = true }

crates/systemsim/src/controller/mod.rs

@@ -3,30 +3,30 @@
 mod null;
 mod point;
 
-use std::collections::HashMap;
-
-use galactica_gameobject::GameShipHandle;
 pub use null::*;
 pub use point::Point;
+
+use galactica_galaxy::GxShipHandle;
 use rapier2d::dynamics::{RigidBodyHandle, RigidBodySet};
+use std::collections::HashMap;
 
 use crate::{
-	objects::{ShipControls, ShipWorldObject},
+	objects::{ShipControls, SySimShip},
 	StepResources,
 };
 
-/// Main behavior trait. Any struct that implements this
+/// Ship controller trait. Any struct that implements this
 /// may be used to control a ship.
-pub trait ShipBehavior {
+pub trait ShipController {
-	/// Update a ship's controls based on world state.
+	/// Update a ship's controls based on system state.
 	/// This method does not return anything, it modifies
 	/// the ship's controls in-place.
 	fn update_controls(
 		&mut self,
 		res: &StepResources,
 		rigid_bodies: &RigidBodySet,
-		ships: &HashMap<GameShipHandle, ShipWorldObject>,
+		ships: &HashMap<GxShipHandle, SySimShip>,
 		this_ship: RigidBodyHandle,
-		this_data: GameShipHandle,
+		this_data: GxShipHandle,
 	) -> ShipControls;
 }

crates/systemsim/src/controller/null.rs

@@ -1,16 +1,15 @@
+use galactica_galaxy::GxShipHandle;
+use rapier2d::dynamics::{RigidBodyHandle, RigidBodySet};
 use std::collections::HashMap;
 
-use galactica_gameobject::GameShipHandle;
+use super::ShipController;
-use rapier2d::dynamics::{RigidBodyHandle, RigidBodySet};
-
-use super::ShipBehavior;
 use crate::{
-	objects::{ShipControls, ShipWorldObject},
+	objects::{ShipControls, SySimShip},
 	StepResources,
 };
 
-/// The Null behaviors is assigned to objects that are not controlled by the computer.
+/// The Null controller is assigned to objects that are static or not controlled by the computer.
-/// Most notably, the player's ship has a Null behavior.
+/// Most notably, the player's ship has a Null controller.
 pub struct Null {}
 
 impl Null {
@@ -20,14 +19,14 @@ impl Null {
 	}
 }
 
-impl ShipBehavior for Null {
+impl ShipController for Null {
 	fn update_controls(
 		&mut self,
 		_res: &StepResources,
 		_rigid_bodies: &RigidBodySet,
-		_ships: &HashMap<GameShipHandle, ShipWorldObject>,
+		_ships: &HashMap<GxShipHandle, SySimShip>,
 		_this_ship: RigidBodyHandle,
-		_this_data: GameShipHandle,
+		_this_data: GxShipHandle,
 	) -> ShipControls {
 		ShipControls::new()
 	}

crates/systemsim/src/controller/point.rs

@@ -1,17 +1,16 @@
 use cgmath::{Deg, InnerSpace};
+use galactica_content::Relationship;
+use galactica_galaxy::GxShipHandle;
 use rapier2d::dynamics::{RigidBodyHandle, RigidBodySet};
 use std::collections::HashMap;
 
+use super::ShipController;
 use crate::{
-	objects::{ShipControls, ShipWorldObject},
+	objects::{ShipControls, SySimShip},
 	util, StepResources,
 };
-use galactica_content as content;
-use galactica_gameobject::GameShipHandle;
 
-use super::ShipBehavior;
+/// "Point" ship controller.
-
-/// "Point" ship behavior.
 /// Point and shoot towards the nearest enemy.
 pub struct Point {}
 
@@ -22,19 +21,19 @@ impl Point {
 	}
 }
 
-impl ShipBehavior for Point {
+impl ShipController for Point {
 	fn update_controls(
 		&mut self,
 		res: &StepResources,
 		rigid_bodies: &RigidBodySet,
-		ships: &HashMap<GameShipHandle, ShipWorldObject>,
+		ships: &HashMap<GxShipHandle, SySimShip>,
 		this_ship: RigidBodyHandle,
-		this_data: GameShipHandle,
+		this_data: GxShipHandle,
 	) -> ShipControls {
 		let mut controls = ShipControls::new();
 
 		let this_rigidbody = rigid_bodies.get(this_ship).unwrap();
-		let my_data = res.dt.get_ship(this_data).unwrap();
+		let my_data = res.gx.get_ship(this_data).unwrap();
 		let my_position = util::rigidbody_position(this_rigidbody);
 		let my_rotation = util::rigidbody_rotation(this_rigidbody);
 		let my_angvel = this_rigidbody.angvel();
@@ -44,10 +43,10 @@ impl ShipBehavior for Point {
 		let mut hostile_ships = ships
 			.values()
 			.filter(|s| {
-				let data = res.dt.get_ship(s.data_handle);
+				let data = res.gx.get_ship(s.data_handle);
 				if let Some(data) = data {
 					match my_faction.relationships.get(&data.get_faction()).unwrap() {
-						content::Relationship::Hostile => true,
+						Relationship::Hostile => true,
 						_ => false,
 					}
 				} else {

crates/systemsim/src/lib.rs

@@ -1,16 +1,15 @@
 #![warn(missing_docs)]
 
-//! This module keeps track of the visible world.
+//! This module provides a physics-based simulation of one galaxy system.
-//! Ships, projectiles, collisions, etc.
 
-pub mod behavior;
+pub mod controller;
 pub mod objects;
 mod particlebuilder;
 mod stepresources;
+mod systemsim;
 pub mod util;
-mod world;
 mod wrapper;
 
 pub use particlebuilder::*;
 pub use stepresources::*;
-pub use world::World;
+pub use systemsim::SystemSim;

crates/systemsim/src/objects/collapse.rs

@@ -0,0 +1,143 @@
+use cgmath::{Deg, EuclideanSpace, InnerSpace, Matrix2, Rad, Vector2, Zero};
+use galactica_content::{CollapseEvent, Ship, ShipHandle};
+use nalgebra::point;
+use rand::{rngs::ThreadRng, Rng};
+use rapier2d::{dynamics::RigidBody, geometry::Collider};
+
+use crate::{util, ParticleBuilder, StepResources};
+
+#[derive(Debug)]
+pub(super) struct ShipCollapseSequence {
+	total_length: f32,
+	time_elapsed: f32,
+	rng: ThreadRng,
+}
+
+impl ShipCollapseSequence {
+	pub(super) fn new(total_length: f32) -> Self {
+		Self {
+			total_length,
+			time_elapsed: 0.0,
+			rng: rand::thread_rng(),
+		}
+	}
+
+	/// Has this sequence been fully played out?
+	pub(super) fn is_done(&self) -> bool {
+		self.time_elapsed >= self.total_length
+	}
+
+	/// Pick a random points inside a ship's collider
+	fn random_in_ship(&mut self, ship_content: &Ship, collider: &Collider) -> Vector2<f32> {
+		let mut y = 0.0;
+		let mut x = 0.0;
+		let mut a = false;
+		while !a {
+			y = self.rng.gen_range(-1.0..=1.0) * ship_content.size / 2.0;
+			x = self.rng.gen_range(-1.0..=1.0) * ship_content.size * ship_content.sprite.aspect
+				/ 2.0;
+			a = collider.shape().contains_local_point(&point![x, y]);
+		}
+		Vector2 { x, y }
+	}
+
+	/// Step this sequence `t` seconds
+	pub(super) fn step(
+		&mut self,
+		res: &mut StepResources,
+		ship_handle: ShipHandle,
+		rigid_body: &mut RigidBody,
+		collider: &mut Collider,
+	) {
+		let ship_content = res.ct.get_ship(ship_handle);
+		let ship_pos = util::rigidbody_position(rigid_body);
+		let ship_rot = util::rigidbody_rotation(rigid_body);
+		let ship_ang = ship_rot.angle(Vector2 { x: 1.0, y: 0.0 });
+
+		// The fraction of this collapse sequence that has been played
+		let frac_done = self.time_elapsed / self.total_length;
+
+		// Trigger collapse events
+		for event in &ship_content.collapse.events {
+			match event {
+				CollapseEvent::Effect(event) => {
+					if (event.time > self.time_elapsed && event.time <= self.time_elapsed + res.t)
+						|| (event.time == 0.0 && self.time_elapsed == 0.0)
+					{
+						for spawner in &event.effects {
+							let effect = res.ct.get_effect(spawner.effect);
+
+							for _ in 0..spawner.count as usize {
+								let pos = if let Some(pos) = spawner.pos {
+									pos.to_vec()
+								} else {
+									self.random_in_ship(ship_content, collider)
+								};
+								let pos = ship_pos
+									+ (Matrix2::from_angle(-ship_ang - Rad::from(Deg(90.0))) * pos);
+
+								let velocity = rigid_body.velocity_at_point(&point![pos.x, pos.y]);
+
+								res.particles.push(ParticleBuilder::from_content(
+									effect,
+									pos,
+									Rad::zero(),
+									Vector2 {
+										x: velocity.x,
+										y: velocity.y,
+									},
+									Vector2::zero(),
+								))
+							}
+						}
+					}
+				}
+			}
+		}
+
+		// Create collapse effects
+		for spawner in &ship_content.collapse.effects {
+			let effect = res.ct.get_effect(spawner.effect);
+
+			// Probability of adding a particle this frame.
+			// The area of this function over [0, 1] should be 1.
+			let pdf = |x: f32| {
+				let f = 0.2;
+				let y = if x < (1.0 - f) {
+					let x = x / (1.0 - f);
+					(x * x + 0.2) * 1.8 - f
+				} else {
+					1.0
+				};
+				return y;
+			};
+
+			let p_add = (res.t / self.total_length) * pdf(frac_done) * spawner.count;
+
+			if self.rng.gen_range(0.0..=1.0) <= p_add {
+				let pos = if let Some(pos) = spawner.pos {
+					pos.to_vec()
+				} else {
+					self.random_in_ship(ship_content, collider)
+				};
+
+				// Position, adjusted for ship rotation
+				let pos = ship_pos + Matrix2::from_angle(-ship_ang - Rad::from(Deg(90.0))) * pos;
+				let vel = rigid_body.velocity_at_point(&point![pos.x, pos.y]);
+
+				res.particles.push(ParticleBuilder {
+					sprite: effect.sprite,
+					pos,
+					velocity: Vector2 { x: vel.x, y: vel.y },
+					angle: Rad::zero(),
+					angvel: Rad::zero(),
+					lifetime: effect.lifetime,
+					size: effect.size,
+					fade: 0.0,
+				});
+			}
+		}
+
+		self.time_elapsed += res.t;
+	}
+}

crates/systemsim/src/objects/mod.rs

@@ -1,6 +1,7 @@
 //! This module contains game objects that may interact with the physics engine.
+mod collapse;
 mod projectile;
 mod ship;
 
-pub use projectile::ProjectileWorldObject;
+pub use projectile::SySimProjectile;
-pub use ship::{ShipControls, ShipWorldObject};
+pub use ship::{ShipControls, SySimShip};

crates/systemsim/src/objects/projectile.rs

@@ -1,19 +1,18 @@
+use galactica_content::{FactionHandle, Projectile};
 use rand::Rng;
 use rapier2d::{dynamics::RigidBodyHandle, geometry::ColliderHandle};
 
-use galactica_content as content;
+/// A single projectile in this sim
-
-/// A single projectile in the world
 #[derive(Debug)]
-pub struct ProjectileWorldObject {
+pub struct SySimProjectile {
 	/// This projectile's game data
-	pub content: content::Projectile,
+	pub content: Projectile,
 
 	/// The remaining lifetime of this projectile, in seconds
 	pub lifetime: f32,
 
 	/// The faction this projectile belongs to
-	pub faction: content::FactionHandle,
+	pub faction: FactionHandle,
 
 	/// This projectile's rigidbody
 	pub rigid_body: RigidBodyHandle,
@@ -25,18 +24,18 @@ pub struct ProjectileWorldObject {
 	pub size_rng: f32,
 }
 
-impl ProjectileWorldObject {
+impl SySimProjectile {
 	/// Create a new projectile
 	pub fn new(
-		content: content::Projectile, // TODO: use a handle
+		content: Projectile, // TODO: use a handle
 		rigid_body: RigidBodyHandle,
-		faction: content::FactionHandle,
+		faction: FactionHandle,
 		collider: ColliderHandle,
 	) -> Self {
 		let mut rng = rand::thread_rng();
 		let size_rng = content.size_rng;
 		let lifetime = content.lifetime;
-		ProjectileWorldObject {
+		SySimProjectile {
 			rigid_body,
 			collider,
 			content,

crates/systemsim/src/objects/ship.rs

@@ -1,16 +1,16 @@
 use cgmath::{Deg, EuclideanSpace, InnerSpace, Matrix2, Rad, Vector2, Zero};
-use content::{FactionHandle, ShipHandle};
+use galactica_content::{Content, FactionHandle};
+use galactica_galaxy::GxShipHandle;
 use nalgebra::{point, vector};
-use object::GameShipHandle;
+use rand::Rng;
-use rand::{rngs::ThreadRng, Rng};
 use rapier2d::{
 	dynamics::{RigidBody, RigidBodyHandle},
 	geometry::{Collider, ColliderHandle},
 };
 
 use crate::{util, ParticleBuilder, StepResources};
-use galactica_content as content;
+
-use galactica_gameobject as object;
+use super::collapse::ShipCollapseSequence;
 
 /// A ship's controls
 #[derive(Debug, Clone)]
@@ -40,149 +40,9 @@ impl ShipControls {
 	}
 }
 
-#[derive(Debug)]
-struct ShipCollapseSequence {
-	total_length: f32,
-	time_elapsed: f32,
-	rng: ThreadRng,
-}
-
-impl ShipCollapseSequence {
-	fn new(total_length: f32) -> Self {
-		Self {
-			total_length,
-			time_elapsed: 0.0,
-			rng: rand::thread_rng(),
-		}
-	}
-
-	/// Has this sequence been fully played out?
-	fn is_done(&self) -> bool {
-		self.time_elapsed >= self.total_length
-	}
-
-	/// Pick a random points inside a ship's collider
-	fn random_in_ship(
-		&mut self,
-		ship_content: &content::Ship,
-		collider: &Collider,
-	) -> Vector2<f32> {
-		let mut y = 0.0;
-		let mut x = 0.0;
-		let mut a = false;
-		while !a {
-			y = self.rng.gen_range(-1.0..=1.0) * ship_content.size / 2.0;
-			x = self.rng.gen_range(-1.0..=1.0) * ship_content.size * ship_content.sprite.aspect
-				/ 2.0;
-			a = collider.shape().contains_local_point(&point![x, y]);
-		}
-		Vector2 { x, y }
-	}
-
-	/// Step this sequence `t` seconds
-	fn step(
-		&mut self,
-		res: &mut StepResources,
-		ship_handle: ShipHandle,
-		rigid_body: &mut RigidBody,
-		collider: &mut Collider,
-	) {
-		let ship_content = res.ct.get_ship(ship_handle);
-		let ship_pos = util::rigidbody_position(rigid_body);
-		let ship_rot = util::rigidbody_rotation(rigid_body);
-		let ship_ang = ship_rot.angle(Vector2 { x: 1.0, y: 0.0 });
-
-		// The fraction of this collapse sequence that has been played
-		let frac_done = self.time_elapsed / self.total_length;
-
-		// Trigger collapse events
-		for event in &ship_content.collapse.events {
-			match event {
-				content::CollapseEvent::Effect(event) => {
-					if (event.time > self.time_elapsed && event.time <= self.time_elapsed + res.t)
-						|| (event.time == 0.0 && self.time_elapsed == 0.0)
-					{
-						for spawner in &event.effects {
-							let effect = res.ct.get_effect(spawner.effect);
-
-							for _ in 0..spawner.count as usize {
-								let pos = if let Some(pos) = spawner.pos {
-									pos.to_vec()
-								} else {
-									self.random_in_ship(ship_content, collider)
-								};
-								let pos = ship_pos
-									+ (Matrix2::from_angle(-ship_ang - Rad::from(Deg(90.0))) * pos);
-
-								let velocity = rigid_body.velocity_at_point(&point![pos.x, pos.y]);
-
-								res.particles.push(ParticleBuilder::from_content(
-									effect,
-									pos,
-									Rad::zero(),
-									Vector2 {
-										x: velocity.x,
-										y: velocity.y,
-									},
-									Vector2::zero(),
-								))
-							}
-						}
-					}
-				}
-			}
-		}
-
-		// Create collapse effects
-		for spawner in &ship_content.collapse.effects {
-			let effect = res.ct.get_effect(spawner.effect);
-
-			// Probability of adding a particle this frame.
-			// The area of this function over [0, 1] should be 1.
-			let pdf = |x: f32| {
-				let f = 0.2;
-				let y = if x < (1.0 - f) {
-					let x = x / (1.0 - f);
-					(x * x + 0.2) * 1.8 - f
-				} else {
-					1.0
-				};
-				return y;
-			};
-
-			let p_add = (res.t / self.total_length) * pdf(frac_done) * spawner.count;
-
-			if self.rng.gen_range(0.0..=1.0) <= p_add {
-				let pos = if let Some(pos) = spawner.pos {
-					pos.to_vec()
-				} else {
-					self.random_in_ship(ship_content, collider)
-				};
-
-				// Position, adjusted for ship rotation
-				let pos = ship_pos + Matrix2::from_angle(-ship_ang - Rad::from(Deg(90.0))) * pos;
-				let vel = rigid_body.velocity_at_point(&point![pos.x, pos.y]);
-
-				res.particles.push(ParticleBuilder {
-					sprite: effect.sprite,
-					pos,
-					velocity: Vector2 { x: vel.x, y: vel.y },
-					angle: Rad::zero(),
-					angvel: Rad::zero(),
-					lifetime: effect.lifetime,
-					size: effect.size,
-					fade: 0.0,
-				});
-			}
-		}
-
-		self.time_elapsed += res.t;
-	}
-}
-
 /// A ship instance in the physics system
 #[derive(Debug)]
-pub struct ShipWorldObject {
+pub struct SySimShip {
 	/// This ship's physics handle
 	pub rigid_body: RigidBodyHandle,
 
@@ -190,7 +50,7 @@ pub struct ShipWorldObject {
 	pub collider: ColliderHandle,
 
 	/// This ship's game data
-	pub data_handle: GameShipHandle,
+	pub data_handle: GxShipHandle,
 
 	/// This ship's controls
 	pub(crate) controls: ShipControls,
@@ -205,17 +65,17 @@ pub struct ShipWorldObject {
 	faction: FactionHandle,
 }
 
-impl ShipWorldObject {
+impl SySimShip {
 	/// Make a new ship
 	pub(crate) fn new(
-		ct: &content::Content,
+		ct: &Content,
-		data_handle: GameShipHandle,
+		data_handle: GxShipHandle,
 		faction: FactionHandle,
 		rigid_body: RigidBodyHandle,
 		collider: ColliderHandle,
 	) -> Self {
 		let ship_content = ct.get_ship(data_handle.content_handle());
-		ShipWorldObject {
+		SySimShip {
 			rigid_body,
 			collider,
 			data_handle,
@@ -237,7 +97,7 @@ impl ShipWorldObject {
 		rigid_body: &mut RigidBody,
 		collider: &mut Collider,
 	) {
-		let ship_data = res.dt.get_ship(self.data_handle);
+		let ship_data = res.gx.get_ship(self.data_handle);
 		if ship_data.is_none() {
 			// If ship data is none, it has been removed because the ship has been destroyed.
 			// play collapse sequence.
@@ -259,7 +119,7 @@ impl ShipWorldObject {
 		rigid_body: &mut RigidBody,
 		collider: &mut Collider,
 	) {
-		let ship = res.dt.get_ship(self.data_handle).unwrap();
+		let ship = res.gx.get_ship(self.data_handle).unwrap();
 		let ship_content = res.ct.get_ship(self.data_handle.content_handle());
 		let ship_pos = util::rigidbody_position(&rigid_body);
 		let ship_rot = util::rigidbody_rotation(rigid_body);
@@ -328,7 +188,7 @@ impl ShipWorldObject {
 	}
 }
 
-impl ShipWorldObject {
+impl SySimShip {
 	/// Get this ship's control state
 	pub fn get_controls(&self) -> &ShipControls {
 		&self.controls

crates/systemsim/src/particlebuilder.rs

@@ -1,12 +1,12 @@
 use cgmath::{Matrix2, Point2, Rad, Vector2};
-use galactica_content as content;
+use galactica_content::{Effect, SpriteHandle};
 use rand::Rng;
 
 /// Instructions to create a new particle
 #[derive(Debug)]
 pub struct ParticleBuilder {
 	/// The sprite to use for this particle
-	pub sprite: content::SpriteHandle,
+	pub sprite: SpriteHandle,
 
 	/// This object's center, in world coordinates.
 	pub pos: Point2<f32>,
@@ -34,7 +34,7 @@ pub struct ParticleBuilder {
 impl ParticleBuilder {
 	/// Create a ParticleBuilder from an Effect
 	pub fn from_content(
-		effect: &content::Effect,
+		effect: &Effect,
 		pos: Point2<f32>,
 		parent_angle: Rad<f32>,
 		parent_velocity: Vector2<f32>,

crates/systemsim/src/stepresources.rs

@@ -1,6 +1,6 @@
 use crate::{objects::ShipControls, ParticleBuilder};
 use galactica_content::Content;
-use galactica_gameobject::{GameData, GameShipHandle};
+use galactica_galaxy::{Galaxy, GxShipHandle};
 
 /// External resources we need to compute time steps
 #[derive(Debug)]
@@ -9,7 +9,7 @@ pub struct StepResources<'a> {
 	pub ct: &'a Content,
 
 	/// Game data
-	pub dt: &'a mut GameData,
+	pub gx: &'a mut Galaxy,
 
 	/// Length of time step
 	pub t: f32,
@@ -21,5 +21,5 @@ pub struct StepResources<'a> {
 	pub player_controls: ShipControls,
 
 	/// The ship that the player controls
-	pub player: GameShipHandle,
+	pub player: GxShipHandle,
 }

crates/systemsim/src/systemsim.rs

@@ -1,8 +1,10 @@
 use cgmath::{Deg, EuclideanSpace, InnerSpace, Matrix2, Point2, Rad, Vector2, Zero};
-use content::{GunPoint, OutfitHandle};
 use crossbeam::channel::Receiver;
+use galactica_content::{
+	Content, GunPoint, OutfitHandle, ProjectileCollider, Relationship, SystemHandle,
+};
+use galactica_galaxy::{ship::GxShip, Galaxy, GxShipHandle};
 use nalgebra::{point, vector};
-use object::{ship::Ship, GameData, GameShipHandle};
 use rand::Rng;
 use rapier2d::{
 	dynamics::{RigidBody, RigidBodyBuilder, RigidBodyHandle},
@@ -12,37 +14,32 @@ use rapier2d::{
 use std::{collections::HashMap, f32::consts::PI};
 
 use crate::{
-	behavior::{self, ShipBehavior},
+	controller::{self, ShipController},
 	objects,
-	objects::{ProjectileWorldObject, ShipWorldObject},
+	objects::{SySimProjectile, SySimShip},
 	util,
 	wrapper::Wrapper,
 	ParticleBuilder, StepResources,
 };
-use galactica_content as content;
-use galactica_gameobject as object;
 
 /// Manages the physics state of one system
-pub struct World {
+pub struct SystemSim {
-	/// The system this world is attached to
+	/// The system this sim is attached to
-	_system: content::SystemHandle,
+	_system: SystemHandle,
 
 	wrapper: Wrapper,
-	projectiles: HashMap<ColliderHandle, objects::ProjectileWorldObject>,
+	projectiles: HashMap<ColliderHandle, objects::SySimProjectile>,
-	ships: HashMap<GameShipHandle, objects::ShipWorldObject>,
+	ships: HashMap<GxShipHandle, objects::SySimShip>,
-	ship_behaviors: HashMap<GameShipHandle, Box<dyn ShipBehavior>>,
+	ship_behaviors: HashMap<GxShipHandle, Box<dyn ShipController>>,
-	collider_ship_table: HashMap<ColliderHandle, GameShipHandle>,
+	collider_ship_table: HashMap<ColliderHandle, GxShipHandle>,
 
 	collision_handler: ChannelEventCollector,
 	collision_queue: Receiver<CollisionEvent>,
 }
 
 // Private methods
-impl<'a> World {
+impl<'a> SystemSim {
-	fn remove_projectile(
+	fn remove_projectile(&mut self, c: ColliderHandle) -> Option<(RigidBody, SySimProjectile)> {
-		&mut self,
-		c: ColliderHandle,
-	) -> Option<(RigidBody, ProjectileWorldObject)> {
 		let p = match self.projectiles.remove(&c) {
 			Some(p) => p,
 			None => return None,
@@ -104,9 +101,9 @@ impl<'a> World {
 		let f = res.ct.get_faction(projectile.faction);
 		let r = f.relationships.get(&ship.get_faction()).unwrap();
 		let destory_projectile = match r {
-			content::Relationship::Hostile => {
+			Relationship::Hostile => {
 				// We only apply damage if the target ship is alive
-				if let Some(ship_d) = res.dt.get_ship_mut(ship.data_handle) {
+				if let Some(ship_d) = res.gx.get_ship_mut(ship.data_handle) {
 					ship_d.apply_damage(projectile.content.damage);
 				}
 				true
@@ -169,9 +166,9 @@ impl<'a> World {
 }
 
 // Public methods
-impl World {
+impl SystemSim {
 	/// Create a new physics system
-	pub fn new(ct: &content::Content, dt: &GameData, system: content::SystemHandle) -> Self {
+	pub fn new(ct: &Content, gx: &Galaxy, system: SystemHandle) -> Self {
 		let (collision_send, collision_queue) = crossbeam::channel::unbounded();
 		let (contact_force_send, _) = crossbeam::channel::unbounded();
 
@@ -188,9 +185,9 @@ impl World {
 
 		// TODO: guarantee not touching
 		// TODO: add, remove ships each tick
-		// Maybe store position in gamedata?
+		// Maybe store position in galaxy crate?
 		let mut rng = rand::thread_rng();
-		for s in dt.iter_ships() {
+		for s in gx.iter_ships() {
 			w.add_ship(
 				ct,
 				s,
@@ -205,7 +202,7 @@ impl World {
 	}
 
 	/// Add a ship to this physics system
-	pub fn add_ship(&mut self, ct: &content::Content, ship: &Ship, position: Point2<f32>) {
+	pub fn add_ship(&mut self, ct: &Content, ship: &GxShip, position: Point2<f32>) {
 		let ship_content = ct.get_ship(ship.get_content());
 		let cl = ColliderBuilder::convex_decomposition(
 			&ship_content.collision.points[..],
@@ -232,10 +229,10 @@ impl World {
 
 		self.collider_ship_table.insert(c, ship.get_handle());
 		self.ship_behaviors
-			.insert(ship.get_handle(), Box::new(behavior::Point::new()));
+			.insert(ship.get_handle(), Box::new(controller::Point::new()));
 		self.ships.insert(
 			ship.get_handle(),
-			objects::ShipWorldObject::new(ct, ship.get_handle(), ship.get_faction(), r, c),
+			objects::SySimShip::new(ct, ship.get_handle(), ship.get_faction(), r, c),
 		);
 	}
 
@@ -260,7 +257,7 @@ impl World {
 
 			// Short-circuit continue if this ship isn't in game data
 			// (which means it's playing a collapse sequence)
-			if res.dt.get_ship(*handle).is_none() {
+			if res.gx.get_ship(*handle).is_none() {
 				let ship_object = self.ships.get_mut(handle).unwrap();
 				ship_object.step(
 					res,
@@ -296,7 +293,7 @@ impl World {
 
 			// If we're firing, try to fire each gun
 			if ship_object.controls.guns {
-				let ship_data = res.dt.get_ship_mut(ship_object.data_handle).unwrap();
+				let ship_data = res.gx.get_ship_mut(ship_object.data_handle).unwrap();
 
 				// TODO: don't allocate here. This is a hack to satisfy the borrow checker,
 				// convert this to a refcell or do the replace dance.
@@ -329,7 +326,7 @@ impl World {
 			let mut rng = rand::thread_rng();
 			let rigid_body = self.get_rigid_body(rigid_body).unwrap();
 
-			let ship_dat = res.dt.get_ship(ship_dat).unwrap();
+			let ship_dat = res.gx.get_ship(ship_dat).unwrap();
 			let ship_pos = util::rigidbody_position(rigid_body);
 			let ship_rot = util::rigidbody_rotation(rigid_body);
 			let ship_vel = util::rigidbody_velocity(rigid_body);
@@ -361,7 +358,7 @@ impl World {
 				.build();
 
 			let collider = match &outfit.projectile.collider {
-				content::ProjectileCollider::Ball(b) => ColliderBuilder::ball(b.radius)
+				ProjectileCollider::Ball(b) => ColliderBuilder::ball(b.radius)
 					.sensor(true)
 					.active_events(ActiveEvents::COLLISION_EVENTS)
 					.build(),
@@ -376,7 +373,7 @@ impl World {
 
 			self.projectiles.insert(
 				collider.clone(),
-				ProjectileWorldObject::new(
+				SySimProjectile::new(
 					outfit.projectile.clone(),
 					rigid_body,
 					ship_dat.get_faction(),
@@ -464,9 +461,9 @@ impl World {
 }
 
 // Public getters
-impl World {
+impl SystemSim {
 	/// Get a ship physics object
-	pub fn get_ship(&self, ship: GameShipHandle) -> Option<&ShipWorldObject> {
+	pub fn get_ship(&self, ship: GxShipHandle) -> Option<&SySimShip> {
 		self.ships.get(&ship)
 	}
 
@@ -481,21 +478,19 @@ impl World {
 	}
 
 	/// Iterate over all ships in this physics system
-	pub fn iter_ship_body(
+	pub fn iter_ship_body(&self) -> impl Iterator<Item = (&objects::SySimShip, &RigidBody)> + '_ {
-		&self,
-	) -> impl Iterator<Item = (&objects::ShipWorldObject, &RigidBody)> + '_ {
 		self.ships
 			.values()
 			.map(|x| (x, self.wrapper.rigid_body_set.get(x.rigid_body).unwrap()))
 	}
 
 	/// Iterate over all ships in this physics system
-	pub fn iter_ships(&self) -> impl Iterator<Item = &ShipWorldObject> + '_ {
+	pub fn iter_ships(&self) -> impl Iterator<Item = &SySimShip> + '_ {
 		self.ships.values()
 	}
 
 	/// Iterate over all ships in this physics system
-	pub fn iter_projectiles(&self) -> impl Iterator<Item = &ProjectileWorldObject> + '_ {
+	pub fn iter_projectiles(&self) -> impl Iterator<Item = &SySimProjectile> + '_ {
 		self.projectiles.values()
 	}
 }