Documentation

Cargo.lock

@@ -578,10 +578,10 @@ name = "galactica"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "bytemuck",
  "cgmath",
  "crossbeam",
  "galactica-content",
+ "galactica-render",
  "image",
  "nalgebra",
  "pollster",
@@ -605,6 +605,19 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "galactica-render"
+version = "0.0.0"
+dependencies = [
+ "anyhow",
+ "bytemuck",
+ "cgmath",
+ "galactica-content",
+ "image",
+ "wgpu",
+ "winit",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.11"

Cargo.toml

@@ -28,26 +28,27 @@ rpath = false
 
 
 [workspace]
-members = ["crates/content"]
+members = ["crates/content", "crates/render"]
 
 
 [dependencies]
 # Internal crates
 galactica-content = { path = "crates/content" }
+galactica-render = { path = "crates/render" }
 
 # Files
 image = { version = "0.24", features = ["png"] }
 # Graphics
 winit = "0.28"
 wgpu = "0.18"
-bytemuck = { version = "1.12", features = ["derive"] }
 # Physics
-rapier2d = { version = "0.17.2" } #, features = ["parallel"] }
+rapier2d = { version = "0.17.2" }
 nalgebra = "0.32.3"
 crossbeam = "0.8.3"
 # Misc helpers
 pollster = "0.3"
 anyhow = "1.0"
+# TODO: migrate to nalgebra
 cgmath = "0.18.0"
 rand = "0.8.5"
 walkdir = "2.4.0"

TODO.md

@@ -64,7 +64,10 @@
  - Pause game
  - Better player controller? (only one shipbehavior needs inputs)
  - Clear all `// TODO:` comments littered in the source
- - Config file
+ - CLI options (debug, save location, content location, check content)
+ - Config file and compile options, remove all those consts.
+ - Engine flares shouldn't be centered
+ - Sprite optimization: do we need to allocate a new `Vec` every frame? Probably not.
 
 ## Content
  - Angled engines
@@ -92,7 +95,6 @@
  - Lookahead -> position or direction?
  - Damping?
  - Important objects affect camera
- - 
 
 ## Visuals
  - Particles
@@ -101,6 +103,7 @@
  - Zoom parallax (?)
  - Background haze
  - Nova dust parallax
+ - Ship outlines in radar
 
 
 ## Write and Document
@@ -130,4 +133,5 @@
    - More interesting trading?
  - Death penalty
    - Find your wreckage when you die (dark souls/HK)
-   - Lose some outfits, lose ship? Real risk for going out! (HK does this well)
+   - Lose some outfits, lose ship? Real risk for going out! (HK does this well)
+ - Damage to ship subsystems

assets

@@ -1 +1 @@
-Subproject commit 711e4fd58100ee31e41c3c27273f7caa706d8d91
+Subproject commit 8205d79e8aa9d7e4976fe8a7794e83819ec19688

content/textures.toml

@@ -18,3 +18,9 @@ path = "projectile/blaster.png"
 
 [texture."ship::gypsum"]
 path = "ship/gypsum.png"
+
+[texture."ui::radar"]
+path = "ui/radar.png"
+
+[texture."ui::blip"]
+path = "ui/blip.png"

crates/content/src/lib.rs

@@ -209,6 +209,12 @@ impl Content {
 		}
 	}
 
+	/// Get a texture from a handle
+	pub fn get_texture_handle(&self, name: &str) -> TextureHandle {
+		return *self.texture_index.get(name).unwrap();
+		// TODO: handle errors
+	}
+
 	/// Get a texture from a handle
 	pub fn get_texture(&self, h: TextureHandle) -> &Texture {
 		// In theory, this could fail if h has a bad index, but that shouldn't ever happen.

crates/content/src/part/gun.rs

@@ -5,10 +5,10 @@ use cgmath::Deg;
 
 use crate::{handle::TextureHandle, Content};
 
-use super::OutfitSpace;
+use crate::OutfitSpace;
 
 pub(crate) mod syntax {
-	use super::super::shared;
+	use crate::part::shared;
 	use serde::Deserialize;
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.

crates/content/src/part/outfit.rs

@@ -2,12 +2,10 @@ use std::collections::HashMap;
 
 use anyhow::{bail, Result};
 
-use crate::{handle::TextureHandle, Content};
-
-use super::OutfitSpace;
+use crate::{handle::TextureHandle, Content, OutfitSpace};
 
 pub(crate) mod syntax {
-	use super::super::shared;
+	use crate::part::shared;
 	use serde::Deserialize;
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.

crates/content/src/part/ship.rs

@@ -4,12 +4,10 @@ use anyhow::{bail, Result};
 use cgmath::Point2;
 use nalgebra::{point, Point};
 
-use crate::{handle::TextureHandle, Content};
-
-use super::OutfitSpace;
+use crate::{handle::TextureHandle, Content, OutfitSpace};
 
 pub(crate) mod syntax {
-	use super::super::shared;
+	use crate::part::shared;
 	use serde::Deserialize;
 
 	// Raw serde syntax structs.

crates/content/src/part/system.rs

@@ -5,8 +5,8 @@ use std::collections::{HashMap, HashSet};
 use crate::{handle::TextureHandle, util::Polar, Content};
 
 pub(crate) mod syntax {
-	use super::HashMap;
 	use serde::Deserialize;
+	use std::collections::HashMap;
 	// Raw serde syntax structs.
 	// These are never seen by code outside this crate.
 

crates/render/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "galactica-render"
+version = "0.0.0"
+edition = "2021"
+
+[dependencies]
+galactica-content = { path = "../content" }
+
+# Misc helpers
+anyhow = "1.0"
+cgmath = "0.18.0"
+# Files
+image = { version = "0.24", features = ["png"] }
+# Graphics
+winit = "0.28"
+wgpu = "0.18"
+bytemuck = { version = "1.12", features = ["derive"] }

crates/render/src/consts.rs

@@ -1,4 +1,4 @@
-use crate::consts;
+use crate::consts_main;
 use cgmath::Matrix4;
 
 // We can draw at most this many sprites on the screen.
@@ -6,7 +6,7 @@ use cgmath::Matrix4;
 pub const SPRITE_INSTANCE_LIMIT: u64 = 500;
 
 // Must be small enough to fit in an i32
-pub const STARFIELD_INSTANCE_LIMIT: u64 = consts::STARFIELD_COUNT * 24;
+pub const STARFIELD_INSTANCE_LIMIT: u64 = consts_main::STARFIELD_COUNT * 24;
 
 /// Shader entry points
 pub const SHADER_MAIN_VERTEX: &'static str = "vertex_main";

crates/render/src/consts_main.rs

@@ -0,0 +1,26 @@
+pub const ZOOM_MIN: f32 = 200.0;
+pub const ZOOM_MAX: f32 = 2000.0;
+
+/// Z-axis range for starfield stars
+/// This does not affect scale.
+pub const STARFIELD_Z_MIN: f32 = 100.0;
+pub const STARFIELD_Z_MAX: f32 = 200.0;
+
+/// Size range for starfield stars, in game units.
+/// This is scaled for zoom, but NOT for distance.
+pub const STARFIELD_SIZE_MIN: f32 = 0.2;
+pub const STARFIELD_SIZE_MAX: f32 = 1.8;
+
+/// Size of a square starfield tile, in game units.
+/// A tile of size STARFIELD_Z_MAX * screen-size-in-game-units
+/// will completely cover a (square) screen. This depends on zoom!
+///
+/// Use a value smaller than zoom_max for debug.
+pub const STARFIELD_SIZE: u64 = STARFIELD_Z_MAX as u64 * ZOOM_MAX as u64;
+
+/// Average number of stars per game unit
+pub const STARFIELD_DENSITY: f64 = 0.01;
+
+/// Number of stars in one starfield tile
+/// Must fit inside an i32
+pub const STARFIELD_COUNT: u64 = (STARFIELD_SIZE as f64 * STARFIELD_DENSITY) as u64;

crates/render/src/gpustate.rs

@@ -1,34 +1,39 @@
 use anyhow::Result;
 use bytemuck;
 use cgmath::{Deg, EuclideanSpace, Matrix4, Point2, Vector2, Vector3};
-use galactica_content::Content;
 use std::{iter, rc::Rc};
 use wgpu;
-use winit::{self, dpi::PhysicalSize, window::Window};
+use winit::{self, dpi::LogicalSize, window::Window};
 
-use super::{
+use crate::{
 	consts::{OPENGL_TO_WGPU_MATRIX, SPRITE_INSTANCE_LIMIT, STARFIELD_INSTANCE_LIMIT},
+	consts_main, content,
 	globaldata::{GlobalData, GlobalDataContent},
 	pipeline::PipelineBuilder,
-	sprite::SubSprite,
+	sprite::ObjectSubSprite,
 	texturearray::TextureArray,
 	vertexbuffer::{
 		consts::{SPRITE_INDICES, SPRITE_VERTICES},
 		types::{SpriteInstance, StarfieldInstance, TexturedVertex},
 		VertexBuffer,
 	},
-	Sprite,
+	ObjectSprite, StarfieldStar, UiSprite,
 };
-use crate::{consts, game::Game};
 
+/// A high-level GPU wrapper. Consumes game state,
+/// produces pretty pictures.
 pub struct GPUState {
+	/// The window to we draw on
+	pub window: Window,
+
+	/// The size of the window we draw on
+	pub window_size: winit::dpi::PhysicalSize<u32>,
+
 	device: wgpu::Device,
 	config: wgpu::SurfaceConfiguration,
 	surface: wgpu::Surface,
 	queue: wgpu::Queue,
 
-	pub window: Window,
-	pub window_size: winit::dpi::PhysicalSize<u32>,
 	window_aspect: f32,
 
 	sprite_pipeline: wgpu::RenderPipeline,
@@ -46,7 +51,8 @@ struct VertexBuffers {
 }
 
 impl GPUState {
-	pub async fn new(window: Window, ct: &Content) -> Result<Self> {
+	/// Make a new GPUState that draws on `window`
+	pub async fn new(window: Window, ct: &content::Content) -> Result<Self> {
 		let window_size = window.inner_size();
 		let window_aspect = window_size.width as f32 / window_size.height as f32;
 
@@ -141,7 +147,7 @@ impl GPUState {
 		let sprite_pipeline = PipelineBuilder::new("sprite", &device)
 			.set_shader(include_str!(concat!(
 				env!("CARGO_MANIFEST_DIR"),
-				"/src/render/shaders/",
+				"/shaders/",
 				"sprite.wgsl"
 			)))
 			.set_format(config.format)
@@ -153,7 +159,7 @@ impl GPUState {
 		let starfield_pipeline = PipelineBuilder::new("starfield", &device)
 			.set_shader(include_str!(concat!(
 				env!("CARGO_MANIFEST_DIR"),
-				"/src/render/shaders/",
+				"/shaders/",
 				"starfield.wgsl"
 			)))
 			.set_format(config.format)
@@ -182,11 +188,15 @@ impl GPUState {
 		});
 	}
 
+	/// Get the window this GPUState is attached to
 	pub fn window(&self) -> &Window {
 		&self.window
 	}
 
-	pub fn resize(&mut self, game: &Game, new_size: PhysicalSize<u32>) {
+	/// Update window size.
+	/// This should be called whenever our window is resized.
+	pub fn resize(&mut self, starfield: &Vec<StarfieldStar>) {
+		let new_size = self.window.inner_size();
 		if new_size.width > 0 && new_size.height > 0 {
 			self.window_size = new_size;
 			self.window_aspect = new_size.width as f32 / new_size.height as f32;
@@ -194,18 +204,19 @@ impl GPUState {
 			self.config.height = new_size.height;
 			self.surface.configure(&self.device, &self.config);
 		}
-		self.update_starfield_buffer(game)
+		self.update_starfield_buffer(starfield)
 	}
 
-	/// Create a SpriteInstance for s and add it to instances.
+	/// Create a SpriteInstance for an object and add it to `instances`.
 	/// Also handles child sprites.
-	fn push_sprite(
+	fn push_object_sprite(
 		&self,
-		game: &Game,
+		camera_zoom: f32,
+		camera_pos: Point2<f32>,
 		instances: &mut Vec<SpriteInstance>,
 		clip_ne: Point2<f32>,
 		clip_sw: Point2<f32>,
-		s: Sprite,
+		s: &ObjectSprite,
 	) {
 		// Position adjusted for parallax
 		// TODO: adjust parallax for zoom?
@@ -213,7 +224,7 @@ impl GPUState {
 			(Point2 {
 				x: s.pos.x,
 				y: s.pos.y,
-			} - game.camera.pos.to_vec())
+			} - camera_pos.to_vec())
 				/ s.pos.z
 		};
 		let texture = self.texture_array.get_texture(s.texture);
@@ -237,7 +248,7 @@ impl GPUState {
 		}
 
 		// TODO: clean up
-		let scale = height / game.camera.zoom;
+		let scale = height / camera_zoom;
 
 		// Note that our mesh starts centered at (0, 0).
 		// This is essential---we do not want scale and rotation
@@ -266,8 +277,8 @@ impl GPUState {
 		// The height of the viewport is `zoom` in game units,
 		// but it's 2 in screen units! (since coordinates range from -1 to 1)
 		let translate = Matrix4::from_translation(Vector3 {
-			x: pos.x / (game.camera.zoom / 2.0) / self.window_aspect,
-			y: pos.y / (game.camera.zoom / 2.0),
+			x: pos.x / (camera_zoom / 2.0) / self.window_aspect,
+			y: pos.y / (camera_zoom / 2.0),
 			z: 0.0,
 		});
 
@@ -282,40 +293,40 @@ impl GPUState {
 		});
 
 		// Add children
-		if let Some(children) = s.children {
+		if let Some(children) = &s.children {
 			for c in children {
-				self.push_subsprite(game, instances, c, pos, s.angle);
+				self.push_object_subsprite(camera_zoom, instances, c, pos, s.angle);
 			}
 		}
 	}
 
-	/// Add a sprite's subsprite to instance.
-	/// Only called by push_sprite.
-	fn push_subsprite(
+	/// Add an object sprite's subsprite to `instances`.
+	/// Only called by `self.push_object_sprite`.
+	fn push_object_subsprite(
 		&self,
-		game: &Game,
+		camera_zoom: f32,
 		instances: &mut Vec<SpriteInstance>,
-		s: SubSprite,
+		s: &ObjectSubSprite,
 		parent_pos: Point2<f32>,
 		parent_angle: Deg<f32>,
 	) {
 		let texture = self.texture_array.get_texture(s.texture);
-		let scale = s.size / (s.pos.z * game.camera.zoom);
+		let scale = s.size / (s.pos.z * camera_zoom);
 		let sprite_aspect_and_scale =
 			Matrix4::from_nonuniform_scale(texture.aspect * scale, scale, 1.0);
 		let rotate = Matrix4::from_angle_z(s.angle);
 		let screen_aspect = Matrix4::from_nonuniform_scale(1.0 / self.window_aspect, 1.0, 1.0);
 
 		let ptranslate = Matrix4::from_translation(Vector3 {
-			x: parent_pos.x / (game.camera.zoom / 2.0) / self.window_aspect,
-			y: parent_pos.y / (game.camera.zoom / 2.0),
+			x: parent_pos.x / (camera_zoom / 2.0) / self.window_aspect,
+			y: parent_pos.y / (camera_zoom / 2.0),
 			z: 0.0,
 		});
 		let protate = Matrix4::from_angle_z(parent_angle);
 
 		let translate = Matrix4::from_translation(Vector3 {
-			x: s.pos.x / (game.camera.zoom / 2.0) / self.window_aspect,
-			y: s.pos.y / (game.camera.zoom / 2.0),
+			x: s.pos.x / (camera_zoom / 2.0) / self.window_aspect,
+			y: s.pos.y / (camera_zoom / 2.0),
 			z: 0.0,
 		});
 
@@ -332,20 +343,65 @@ impl GPUState {
 		});
 	}
 
+	/// Create a SpriteInstance for a ui sprite and add it to `instances`
+	fn push_ui_sprite(&self, instances: &mut Vec<SpriteInstance>, s: &UiSprite) {
+		let logical_size: LogicalSize<f32> =
+			self.window_size.to_logical(self.window.scale_factor());
+
+		let texture = self.texture_array.get_texture(s.texture);
+		let width = s.dimensions.x;
+		let height = s.dimensions.y;
+
+		let scale = Matrix4::from_nonuniform_scale(
+			width / logical_size.width,
+			height / logical_size.height,
+			1.0,
+		);
+		let rotate = Matrix4::from_angle_z(s.angle);
+		let translate = Matrix4::from_translation(match s.pos {
+			super::AnchoredUiPosition::NorthWest(p) => Vector3 {
+				// Note the signs. Positive y points north!
+				x: -1.0 + (width / 2.0 + p.x) / (logical_size.width / 2.0),
+				y: 1.0 - (height / 2.0 - p.y) / (logical_size.height / 2.0),
+				z: 0.0,
+			},
+			_ => Vector3 {
+				x: 0.0,
+				y: 0.0,
+				z: 0.0,
+			},
+		});
+
+		instances.push(SpriteInstance {
+			transform: (OPENGL_TO_WGPU_MATRIX * translate * rotate * scale).into(),
+			texture_index: texture.index,
+		});
+	}
+
 	/// Make a SpriteInstance for each of the game's visible sprites.
 	/// Will panic if SPRITE_INSTANCE_LIMIT is exceeded.
 	///
 	/// This is only called inside self.render()
-	fn make_sprite_instances(&self, game: &Game) -> Vec<SpriteInstance> {
+	fn make_sprite_instances(
+		&self,
+		camera_zoom: f32,
+		camera_pos: Point2<f32>,
+		objects: &Vec<ObjectSprite>,
+		ui: &Vec<UiSprite>,
+	) -> Vec<SpriteInstance> {
 		let mut instances: Vec<SpriteInstance> = Vec::new();
 
 		// Game coordinates (relative to camera) of ne and sw corners of screen.
 		// Used to skip off-screen sprites.
-		let clip_ne = Point2::from((-self.window_aspect, 1.0)) * game.camera.zoom;
-		let clip_sw = Point2::from((self.window_aspect, -1.0)) * game.camera.zoom;
+		let clip_ne = Point2::from((-self.window_aspect, 1.0)) * camera_zoom;
+		let clip_sw = Point2::from((self.window_aspect, -1.0)) * camera_zoom;
 
-		for s in game.get_sprites() {
-			self.push_sprite(game, &mut instances, clip_ne, clip_sw, s);
+		for s in objects {
+			self.push_object_sprite(camera_zoom, camera_pos, &mut instances, clip_ne, clip_sw, s);
+		}
+
+		for s in ui {
+			self.push_ui_sprite(&mut instances, s);
 		}
 
 		// Enforce sprite limit
@@ -361,18 +417,19 @@ impl GPUState {
 	/// Will panic if STARFIELD_INSTANCE_LIMIT is exceeded.
 	///
 	/// Starfield data rarely changes, so this is called only when it's needed.
-	pub fn update_starfield_buffer(&mut self, game: &Game) {
-		let sz = consts::STARFIELD_SIZE as f32;
+	pub fn update_starfield_buffer(&mut self, starfield: &Vec<StarfieldStar>) {
+		let sz = consts_main::STARFIELD_SIZE as f32;
 
 		// Compute window size in starfield tiles
 		let mut nw_tile: Point2<i32> = {
 			// Game coordinates (relative to camera) of nw corner of screen.
-			let clip_nw = Point2::from((self.window_aspect, 1.0)) * consts::ZOOM_MAX;
+			// TODO: we probably don't need to re-compute this on resize
+			let clip_nw = Point2::from((self.window_aspect, 1.0)) * consts_main::ZOOM_MAX;
 
 			// Parallax correction.
 			// Also, adjust v for mod to work properly
 			// (v is centered at 0)
-			let v: Point2<f32> = clip_nw * consts::STARFIELD_Z_MIN;
+			let v: Point2<f32> = clip_nw * consts_main::STARFIELD_Z_MIN;
 			let v_adj: Point2<f32> = (v.x + (sz / 2.0), v.y + (sz / 2.0)).into();
 
 			#[rustfmt::skip]
@@ -396,7 +453,7 @@ impl GPUState {
 
 		// Truncate tile grid to buffer size
 		// (The window won't be full of stars if our instance limit is too small)
-		while ((nw_tile.x * 2 + 1) * (nw_tile.y * 2 + 1) * consts::STARFIELD_COUNT as i32)
+		while ((nw_tile.x * 2 + 1) * (nw_tile.y * 2 + 1) * consts_main::STARFIELD_COUNT as i32)
 			> STARFIELD_INSTANCE_LIMIT as i32
 		{
 			nw_tile -= Vector2::from((1, 1));
@@ -411,7 +468,7 @@ impl GPUState {
 					y: sz * y as f32,
 					z: 0.0,
 				};
-				for s in &game.system.starfield {
+				for s in starfield {
 					instances.push(StarfieldInstance {
 						position: (s.pos + offset).into(),
 						size: s.size,
@@ -434,7 +491,14 @@ impl GPUState {
 		);
 	}
 
-	pub fn render(&mut self, game: &Game) -> Result<(), wgpu::SurfaceError> {
+	/// Main render function. Draws sprites on a window.
+	pub fn render(
+		&mut self,
+		camera_pos: Point2<f32>,
+		camera_zoom: f32,
+		object_sprites: &Vec<ObjectSprite>,
+		ui_sprites: &Vec<UiSprite>,
+	) -> Result<(), wgpu::SurfaceError> {
 		let output = self.surface.get_current_texture()?;
 		let view = output
 			.texture
@@ -472,22 +536,26 @@ impl GPUState {
 			&self.global_data.buffer,
 			0,
 			bytemuck::cast_slice(&[GlobalDataContent {
-				camera_position: game.camera.pos.into(),
-				camera_zoom: [game.camera.zoom, 0.0],
-				camera_zoom_limits: [consts::ZOOM_MIN, consts::ZOOM_MAX],
+				camera_position: camera_pos.into(),
+				camera_zoom: [camera_zoom, 0.0],
+				camera_zoom_limits: [consts_main::ZOOM_MIN, consts_main::ZOOM_MAX],
 				window_size: [
 					self.window_size.width as f32,
 					self.window_size.height as f32,
 				],
 				window_aspect: [self.window_aspect, 0.0],
 				starfield_texture: [self.texture_array.get_starfield_texture().index, 0],
-				starfield_tile_size: [consts::STARFIELD_SIZE as f32, 0.0],
-				starfield_size_limits: [consts::STARFIELD_SIZE_MIN, consts::STARFIELD_SIZE_MAX],
+				starfield_tile_size: [consts_main::STARFIELD_SIZE as f32, 0.0],
+				starfield_size_limits: [
+					consts_main::STARFIELD_SIZE_MIN,
+					consts_main::STARFIELD_SIZE_MAX,
+				],
 			}]),
 		);
 
 		// Create sprite instances
-		let sprite_instances = self.make_sprite_instances(game);
+		let sprite_instances =
+			self.make_sprite_instances(camera_zoom, camera_pos, object_sprites, ui_sprites);
 		self.queue.write_buffer(
 			&self.vertex_buffers.sprite.instances,
 			0,

crates/render/src/lib.rs

@@ -0,0 +1,39 @@
+#![warn(missing_docs)]
+
+//! This crate contains all drawing logic and NO game logic.
+//! It converts game state to a nice picture.
+//!
+//! [`GPUState`] is the main struct this crate provides,
+//! and the only one external code should interact with.
+//! (Excluding data structs, like [`ObjectSprite`])
+
+mod consts;
+mod globaldata;
+mod gpustate;
+mod pipeline;
+mod sprite;
+mod texturearray;
+mod vertexbuffer;
+
+// TODO: remove
+mod consts_main;
+
+use cgmath::{Point3, Vector2};
+use galactica_content as content;
+pub use gpustate::GPUState;
+pub use sprite::{AnchoredUiPosition, ObjectSprite, ObjectSubSprite, UiSprite};
+
+/// TODO: this shouldn't be here
+pub struct StarfieldStar {
+	/// Star coordinates, in world space.
+	/// These are relative to the center of a starfield tile.
+	pub pos: Point3<f32>,
+
+	/// Height in game units.
+	/// Will be scaled for zoom, but not for distance.
+	pub size: f32,
+
+	/// Color/brightness variation. Random between 0 and 1.
+	/// Used in starfield shader.
+	pub tint: Vector2<f32>,
+}

crates/render/src/pipeline.rs

@@ -1,8 +1,8 @@
 use std::rc::Rc;
 use wgpu;
 
-use super::consts::{SHADER_MAIN_FRAGMENT, SHADER_MAIN_VERTEX};
-use super::vertexbuffer::VertexBuffer;
+use crate::consts::{SHADER_MAIN_FRAGMENT, SHADER_MAIN_VERTEX};
+use crate::vertexbuffer::VertexBuffer;
 
 pub struct PipelineBuilder<'a> {
 	// These are provided with new()

crates/render/src/sprite.rs

@@ -0,0 +1,78 @@
+use crate::content;
+use cgmath::{Deg, Point2, Point3};
+
+/// The location of a UI element, in one of a few
+/// possible coordinate systems.
+///
+/// Positive Y always points up,
+/// positive X always points right.
+#[derive(Debug, Clone)]
+pub enum AnchoredUiPosition {
+	/// Position of this sprite's nw corner,
+	/// relative to the nw corner of the window.
+	NorthWest(Point2<f32>),
+
+	/// Position of this sprite's sw corner,
+	/// relative to the sw corner of the window.
+	SouthWest(Point2<f32>),
+}
+
+/// A sprite that represents a ui element
+#[derive(Debug, Clone)]
+pub struct UiSprite {
+	/// The texture to use for this sprite
+	pub texture: content::TextureHandle,
+
+	/// This object's position, in logical (dpi-adjusted) pixels
+	pub pos: AnchoredUiPosition,
+
+	/// The size of this sprite, in logical (dpi-adjusted) pixels
+	pub dimensions: Point2<f32>,
+
+	/// This sprite's rotation, measured ccw
+	pub angle: Deg<f32>,
+}
+
+/// A sprite that represents a world object:
+/// Ships, planets, debris, etc
+#[derive(Debug, Clone)]
+pub struct ObjectSprite {
+	/// The texture to use for this sprite
+	pub texture: content::TextureHandle,
+
+	/// This object's center, in world coordinates.
+	pub pos: Point3<f32>,
+
+	/// The size of this sprite,
+	/// given as height in world units.
+	pub size: f32,
+
+	/// This sprite's rotation
+	/// (relative to north, measured ccw)
+	/// Note that this is different from the angle used by our physics system.
+	pub angle: Deg<f32>,
+
+	/// Sprites that should be drawn relative to this sprite.
+	pub children: Option<Vec<ObjectSubSprite>>,
+}
+
+/// A sprite that is drawn relative to an ObjectSprite.
+#[derive(Debug, Clone)]
+pub struct ObjectSubSprite {
+	/// The sprite texture to draw
+	pub texture: content::TextureHandle,
+
+	/// This object's position, in world coordinates.
+	/// This is relative to this sprite's parent.
+	pub pos: Point3<f32>,
+
+	/// The size of this sprite,
+	/// given as height in world units.
+	pub size: f32,
+
+	/// This sprite's rotation
+	/// (relative to north, measured ccw)
+	/// Just as position, this is relative to this
+	/// subsprite's parent sprite.
+	pub angle: Deg<f32>,
+}

crates/render/src/texturearray.rs

@@ -1,15 +1,15 @@
+use crate::content;
 use anyhow::Result;
-use galactica_content::{Content, TextureHandle};
 use image::GenericImageView;
 use std::{collections::HashMap, fs::File, io::Read, num::NonZeroU32};
 use wgpu::BindGroupLayout;
 
-pub(super) struct RawTexture {
-	pub(super) view: wgpu::TextureView,
+pub(crate) struct RawTexture {
+	pub(crate) view: wgpu::TextureView,
 }
 
 impl RawTexture {
-	pub(super) fn from_bytes(
+	pub(crate) fn from_bytes(
 		device: &wgpu::Device,
 		queue: &wgpu::Queue,
 		bytes: &[u8],
@@ -19,7 +19,7 @@ impl RawTexture {
 		Self::from_image(device, queue, &img, Some(label))
 	}
 
-	pub(super) fn from_image(
+	pub(crate) fn from_image(
 		device: &wgpu::Device,
 		queue: &wgpu::Queue,
 		img: &image::DynamicImage,
@@ -76,8 +76,8 @@ pub struct Texture {
 pub struct TextureArray {
 	pub bind_group: wgpu::BindGroup,
 	pub bind_group_layout: BindGroupLayout,
-	starfield_handle: TextureHandle,
-	textures: HashMap<TextureHandle, Texture>,
+	starfield_handle: content::TextureHandle,
+	textures: HashMap<content::TextureHandle, Texture>,
 }
 
 impl TextureArray {
@@ -85,14 +85,14 @@ impl TextureArray {
 		*self.textures.get(&self.starfield_handle).unwrap()
 	}
 
-	pub fn get_texture(&self, handle: TextureHandle) -> Texture {
+	pub fn get_texture(&self, handle: content::TextureHandle) -> Texture {
 		match self.textures.get(&handle) {
 			Some(x) => *x,
 			None => unreachable!("Tried to get a texture that doesn't exist"),
 		}
 	}
 
-	pub fn new(device: &wgpu::Device, queue: &wgpu::Queue, ct: &Content) -> Result<Self> {
+	pub fn new(device: &wgpu::Device, queue: &wgpu::Queue, ct: &content::Content) -> Result<Self> {
 		// Load all textures
 		let mut texture_data = Vec::new();
 		let mut textures = HashMap::new();

crates/render/src/vertexbuffer/types.rs

@@ -36,9 +36,8 @@ impl BufferObject for TexturedVertex {
 #[repr(C)]
 #[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 pub struct StarfieldInstance {
-	/// Position in the starfield.
+	/// Position in the starfield. This is NOT world position!
 	///
-	/// This is NOT world position, i.e, different from sprite positioning!
 	/// The x and y coordinates here represent position relative to the center
 	/// of a starfield tile in world units, which is converted to world position
 	/// by the starfield vertex shader.

src/consts.rs

@@ -32,4 +32,4 @@ pub const STARFIELD_TEXTURE_NAME: &'static str = "starfield";
 pub const CONTENT_ROOT: &'static str = "./content";
 
 /// Root directory of game textures
-pub const TEXTURE_ROOT: &'static str = "./assets";
+pub const TEXTURE_ROOT: &'static str = "./assets/render";

src/game/game.rs

@@ -1,18 +1,72 @@
-use cgmath::Point2;
-use galactica_content::FactionHandle;
+use cgmath::{Deg, InnerSpace, Point2};
+use galactica_render::{AnchoredUiPosition, ObjectSprite, UiSprite};
 use std::time::Instant;
 use winit::event::{ElementState, MouseButton, MouseScrollDelta, TouchPhase, VirtualKeyCode};
 
 use super::{camera::Camera, outfits, system::System};
 use crate::{
-	consts,
-	content::Content,
+	consts, content,
 	inputstatus::InputStatus,
 	physics::{util, Physics, ShipHandle},
-	render::Sprite,
 	shipbehavior::{self, ShipBehavior},
 };
 
+struct Ui {}
+
+impl Ui {
+	fn new() -> Self {
+		Self {}
+	}
+
+	fn build_radar(
+		&self,
+		player: &ShipHandle,
+		physics: &Physics,
+		ct: &content::Content,
+	) -> Vec<UiSprite> {
+		let mut out = Vec::new();
+
+		let radar_range = 2000.0;
+		let radar_size = 300.0;
+
+		out.push(UiSprite {
+			texture: ct.get_texture_handle("ui::radar"),
+			pos: AnchoredUiPosition::NorthWest(Point2 { x: 10.0, y: -10.0 }),
+			dimensions: Point2 {
+				x: radar_size,
+				y: radar_size,
+			},
+			angle: Deg(0.0),
+		});
+
+		let (_, pr) = physics.get_ship_body(player).unwrap();
+		let pr = util::rigidbody_position(pr);
+		for (s, r) in physics.iter_ship_body() {
+			if s.physics_handle == *player {
+				continue;
+			}
+			let r = util::rigidbody_position(r);
+			let d = r - pr;
+			let m = d.magnitude() / radar_range;
+			if m < 0.8 {
+				out.push(UiSprite {
+					texture: ct.get_texture_handle("ui::blip"),
+					pos: AnchoredUiPosition::NorthWest(
+						Point2 {
+							x: radar_size / 2.0 + 10.0,
+							y: radar_size / -2.0 - 10.0,
+						} + (d / radar_range * 150.0),
+					),
+					dimensions: Point2 { x: 1.0, y: 1.0 } * 5.0f32.min((0.8 - m) * 50.0),
+					angle: Deg(0.0),
+				});
+			}
+		}
+
+		return out;
+	}
+}
+
 pub struct Game {
 	pub input: InputStatus,
 	pub last_update: Instant,
@@ -22,13 +76,14 @@ pub struct Game {
 	paused: bool,
 	pub time_scale: f32,
 
+	ui: Ui,
 	physics: Physics,
 	shipbehaviors: Vec<Box<dyn ShipBehavior>>,
-	content: Content,
+	content: content::Content,
 }
 
 impl Game {
-	pub fn new(ct: Content) -> Self {
+	pub fn new(ct: content::Content) -> Self {
 		let mut physics = Physics::new();
 
 		let mut o1 = outfits::ShipOutfits::new(&ct.ships[0]);
@@ -40,14 +95,14 @@ impl Game {
 			&ct.ships[0],
 			o1,
 			Point2 { x: 0.0, y: 0.0 },
-			FactionHandle { index: 0 },
+			content::FactionHandle { index: 0 },
 		);
 
 		let h2 = physics.add_ship(
 			&ct.ships[0],
 			outfits::ShipOutfits::new(&ct.ships[0]),
 			Point2 { x: 300.0, y: 300.0 },
-			FactionHandle { index: 0 },
+			content::FactionHandle { index: 0 },
 		);
 
 		let mut o2 = outfits::ShipOutfits::new(&ct.ships[0]);
@@ -60,7 +115,7 @@ impl Game {
 				x: -300.0,
 				y: 300.0,
 			},
-			FactionHandle { index: 1 },
+			content::FactionHandle { index: 1 },
 		);
 
 		let mut shipbehaviors: Vec<Box<dyn ShipBehavior>> = Vec::new();
@@ -84,6 +139,7 @@ impl Game {
 			physics,
 			shipbehaviors,
 			content: ct,
+			ui: Ui::new(),
 		}
 	}
 
@@ -140,8 +196,8 @@ impl Game {
 		self.last_update = Instant::now();
 	}
 
-	pub fn get_sprites(&self) -> Vec<Sprite> {
-		let mut sprites: Vec<Sprite> = Vec::new();
+	pub fn get_object_sprites(&self) -> Vec<ObjectSprite> {
+		let mut sprites: Vec<ObjectSprite> = Vec::new();
 
 		sprites.append(&mut self.system.get_sprites());
 		sprites.extend(self.physics.get_ship_sprites());
@@ -158,4 +214,10 @@ impl Game {
 
 		return sprites;
 	}
+
+	pub fn get_ui_sprites(&self) -> Vec<UiSprite> {
+		return self
+			.ui
+			.build_radar(&self.player, &self.physics, &self.content);
+	}
 }

src/game/outfits.rs

@@ -1,7 +1,7 @@
 use cgmath::{Deg, Point3};
-use content::{OutfitSpace, TextureHandle};
+use galactica_render::ObjectSubSprite;
 
-use crate::{content, render::SubSprite};
+use crate::content;
 
 /// Represents a gun attached to a specific ship at a certain gunpoint.
 #[derive(Debug)]
@@ -28,7 +28,7 @@ impl ShipGun {
 pub struct OutfitStatSum {
 	pub engine_thrust: f32,
 	pub steer_power: f32,
-	pub engine_flare_textures: Vec<TextureHandle>,
+	pub engine_flare_textures: Vec<content::TextureHandle>,
 }
 
 impl OutfitStatSum {
@@ -67,9 +67,9 @@ impl OutfitStatSum {
 #[derive(Debug)]
 pub struct ShipOutfits {
 	pub stats: OutfitStatSum,
-	pub total_space: OutfitSpace,
+	pub total_space: content::OutfitSpace,
 
-	available_space: OutfitSpace,
+	available_space: content::OutfitSpace,
 	outfits: Vec<content::Outfit>,
 	guns: Vec<ShipGun>,
 	enginepoints: Vec<content::EnginePoint>,
@@ -77,7 +77,7 @@ pub struct ShipOutfits {
 
 	// Minor performance optimization, since we
 	// rarely need to re-compute these.
-	engine_flare_sprites: Vec<SubSprite>,
+	engine_flare_sprites: Vec<ObjectSubSprite>,
 }
 
 impl<'a> ShipOutfits {
@@ -177,7 +177,7 @@ impl<'a> ShipOutfits {
 		self.engine_flare_sprites = self
 			.enginepoints
 			.iter()
-			.map(|p| SubSprite {
+			.map(|p| ObjectSubSprite {
 				pos: Point3 {
 					x: p.pos.x,
 					y: p.pos.y,
@@ -190,7 +190,7 @@ impl<'a> ShipOutfits {
 			.collect();
 	}
 
-	pub fn get_engine_flares(&self) -> Vec<SubSprite> {
+	pub fn get_engine_flares(&self) -> Vec<ObjectSubSprite> {
 		return self.engine_flare_sprites.clone();
 	}
 }

src/game/system.rs

@@ -1,22 +1,9 @@
 use cgmath::{Point3, Vector2};
+use galactica_render::{ObjectSprite, StarfieldStar};
 use rand::{self, Rng};
 
 use super::SystemObject;
-use crate::{consts, content, render::Sprite};
-
-pub struct StarfieldStar {
-	/// Star coordinates, in world space.
-	/// These are relative to the center of a starfield tile.
-	pub pos: Point3<f32>,
-
-	/// Height in game units.
-	/// Will be scaled for zoom, but not for distance.
-	pub size: f32,
-
-	/// Color/brightness variation. Random between 0 and 1.
-	/// Used in starfield shader.
-	pub tint: Vector2<f32>,
-}
+use crate::{consts, content};
 
 pub struct System {
 	pub name: String,
@@ -59,7 +46,7 @@ impl System {
 		return s;
 	}
 
-	pub fn get_sprites(&self) -> Vec<Sprite> {
+	pub fn get_sprites(&self) -> Vec<ObjectSprite> {
 		return self.bodies.iter().map(|x| x.get_sprite()).collect();
 	}
 }

src/game/systemobject.rs

@@ -1,18 +1,17 @@
+use crate::content;
 use cgmath::{Deg, Point3};
-use galactica_content::TextureHandle;
-
-use crate::render::Sprite;
+use galactica_render::ObjectSprite;
 
 pub struct SystemObject {
-	pub sprite_texture: TextureHandle,
+	pub sprite_texture: content::TextureHandle,
 	pub pos: Point3<f32>,
 	pub size: f32,
 	pub angle: Deg<f32>,
 }
 
 impl SystemObject {
-	pub(super) fn get_sprite(&self) -> Sprite {
-		return Sprite {
+	pub(crate) fn get_sprite(&self) -> ObjectSprite {
+		return ObjectSprite {
 			texture: self.sprite_texture,
 			pos: self.pos,
 			angle: self.angle,

src/main.rs

@@ -3,13 +3,12 @@ mod game;
 mod inputstatus;
 mod objects;
 mod physics;
-mod render;
 mod shipbehavior;
 
-use std::path::PathBuf;
+pub use galactica_content as content;
 
 use anyhow::Result;
-use galactica_content as content;
+use std::path::PathBuf;
 use winit::{
 	event::{Event, KeyboardInput, WindowEvent},
 	event_loop::{ControlFlow, EventLoop},
@@ -26,17 +25,22 @@ fn main() -> Result<()> {
 
 	let event_loop = EventLoop::new();
 	let window = WindowBuilder::new().build(&event_loop).unwrap();
-	let mut gpu = pollster::block_on(render::GPUState::new(window, &content))?;
+	let mut gpu = pollster::block_on(galactica_render::GPUState::new(window, &content))?;
 
 	let mut game = game::Game::new(content);
-	gpu.update_starfield_buffer(&game);
+	gpu.update_starfield_buffer(&game.system.starfield);
 
 	event_loop.run(move |event, _, control_flow| {
 		match event {
 			Event::RedrawRequested(window_id) if window_id == gpu.window().id() => {
-				match gpu.render(&game) {
+				match gpu.render(
+					game.camera.pos,
+					game.camera.zoom,
+					&game.get_object_sprites(),
+					&game.get_ui_sprites(),
+				) {
 					Ok(_) => {}
-					Err(wgpu::SurfaceError::Lost) => gpu.resize(&game, gpu.window_size),
+					Err(wgpu::SurfaceError::Lost) => gpu.resize(&game.system.starfield),
 					Err(wgpu::SurfaceError::OutOfMemory) => *control_flow = ControlFlow::Exit,
 					// All other errors (Outdated, Timeout) should be resolved by the next frame
 					Err(e) => eprintln!("{:?}", e),
@@ -71,11 +75,11 @@ fn main() -> Result<()> {
 				WindowEvent::MouseWheel { delta, phase, .. } => {
 					game.process_scroll(delta, phase);
 				}
-				WindowEvent::Resized(physical_size) => {
-					gpu.resize(&game, *physical_size);
+				WindowEvent::Resized(_) => {
+					gpu.resize(&game.system.starfield);
 				}
-				WindowEvent::ScaleFactorChanged { new_inner_size, .. } => {
-					gpu.resize(&game, **new_inner_size);
+				WindowEvent::ScaleFactorChanged { .. } => {
+					gpu.resize(&game.system.starfield);
 				}
 				_ => {}
 			},

src/objects/projectile.rs

@@ -1,20 +1,20 @@
 use cgmath::{Deg, InnerSpace, Point3, Vector2};
-use galactica_content::{FactionHandle, TextureHandle};
+use galactica_render::ObjectSprite;
 use rapier2d::{
 	dynamics::{RigidBody, RigidBodyBuilder, RigidBodyHandle},
 	geometry::{ColliderBuilder, ColliderHandle},
 };
 
-use crate::{physics::util, render::Sprite};
+use crate::{content, physics::util};
 
 pub struct ProjectileBuilder {
 	pub rigid_body: RigidBodyBuilder,
 	pub collider: ColliderBuilder,
-	pub sprite_texture: TextureHandle,
+	pub sprite_texture: content::TextureHandle,
 	pub lifetime: f32,
 	pub size: f32,
 	pub damage: f32,
-	pub faction: FactionHandle,
+	pub faction: content::FactionHandle,
 }
 
 impl ProjectileBuilder {
@@ -35,11 +35,11 @@ impl ProjectileBuilder {
 pub struct Projectile {
 	pub rigid_body: RigidBodyHandle,
 	pub collider: ColliderHandle,
-	pub sprite_texture: TextureHandle,
+	pub sprite_texture: content::TextureHandle,
 	pub lifetime: f32,
 	pub size: f32,
 	pub damage: f32,
-	pub faction: FactionHandle,
+	pub faction: content::FactionHandle,
 }
 
 impl Projectile {
@@ -51,14 +51,14 @@ impl Projectile {
 		return self.lifetime < 0.0;
 	}
 
-	pub fn get_sprite(&self, r: &RigidBody) -> Sprite {
+	pub fn get_sprite(&self, r: &RigidBody) -> ObjectSprite {
 		let pos = util::rigidbody_position(r);
 		let rot = util::rigidbody_rotation(r);
 
 		// Sprites point north at 0 degrees
 		let ang: Deg<f32> = rot.angle(Vector2 { x: 1.0, y: 0.0 }).into();
 
-		Sprite {
+		ObjectSprite {
 			texture: self.sprite_texture,
 			pos: Point3 {
 				x: pos.x,

src/objects/ship.rs

@@ -1,5 +1,6 @@
 use cgmath::{Deg, EuclideanSpace, InnerSpace, Matrix2, Rad, Vector2};
 use content::{FactionHandle, TextureHandle};
+use galactica_render::ObjectSprite;
 use nalgebra::vector;
 use rand::Rng;
 use rapier2d::{
@@ -13,7 +14,6 @@ use crate::{
 	content,
 	game::outfits,
 	physics::{util, ShipHandle},
-	render::Sprite,
 };
 
 pub struct ShipTickResult {
@@ -157,14 +157,14 @@ impl Ship {
 		return ShipTickResult { projectiles: p };
 	}
 
-	pub fn get_sprite(&self, r: &RigidBody) -> Sprite {
+	pub fn get_sprite(&self, r: &RigidBody) -> ObjectSprite {
 		let ship_pos = util::rigidbody_position(r);
 		let ship_rot = util::rigidbody_rotation(r);
 
 		// Sprites point north at 0 degrees
 		let ship_ang: Deg<f32> = ship_rot.angle(Vector2 { x: 0.0, y: 1.0 }).into();
 
-		Sprite {
+		ObjectSprite {
 			pos: (ship_pos.x, ship_pos.y, 1.0).into(),
 			texture: self.sprite_texture,
 			angle: -ship_ang,

src/physics/mod.rs

@@ -6,5 +6,5 @@ pub use physics::Physics;
 
 use rapier2d::{dynamics::RigidBodyHandle, geometry::ColliderHandle};
 
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct ShipHandle(pub(super) RigidBodyHandle, ColliderHandle);

src/physics/physics.rs

@@ -1,6 +1,6 @@
 use cgmath::Point2;
-use content::{Content, FactionHandle};
 use crossbeam::channel::Receiver;
+use galactica_render::ObjectSprite;
 use nalgebra::vector;
 use rapier2d::{
 	dynamics::{RigidBody, RigidBodyBuilder, RigidBodyHandle},
@@ -10,7 +10,7 @@ use rapier2d::{
 use std::{collections::HashMap, f32::consts::PI};
 
 use super::{wrapper::Wrapper, ShipHandle};
-use crate::{content, game::outfits, objects, render::Sprite};
+use crate::{content, game::outfits, objects};
 
 /// Keeps track of all objects in the world that we can interact with.
 /// Also wraps our physics engine
@@ -84,7 +84,7 @@ impl Physics {
 		ct: &content::Ship,
 		outfits: outfits::ShipOutfits,
 		position: Point2<f32>,
-		faction: FactionHandle,
+		faction: content::FactionHandle,
 	) -> ShipHandle {
 		let cl = ColliderBuilder::convex_decomposition(
 			&ct.collision.points[..],
@@ -114,7 +114,7 @@ impl Physics {
 		return h;
 	}
 
-	pub fn step(&mut self, t: f32, ct: &Content) {
+	pub fn step(&mut self, t: f32, ct: &content::Content) {
 		// Run ship updates
 		let mut res = Vec::new();
 		let mut to_remove = Vec::new();
@@ -205,13 +205,13 @@ impl Physics {
 		})
 	}
 
-	pub fn get_ship_sprites(&self) -> impl Iterator<Item = Sprite> + '_ {
+	pub fn get_ship_sprites(&self) -> impl Iterator<Item = ObjectSprite> + '_ {
 		self.ships
 			.values()
 			.map(|x| x.get_sprite(&self.wrapper.rigid_body_set[x.physics_handle.0]))
 	}
 
-	pub fn get_projectile_sprites(&self) -> impl Iterator<Item = Sprite> + '_ {
+	pub fn get_projectile_sprites(&self) -> impl Iterator<Item = ObjectSprite> + '_ {
 		self.projectiles
 			.values()
 			.map(|x| x.get_sprite(&self.wrapper.rigid_body_set[x.rigid_body]))

src/render/mod.rs

@@ -1,10 +0,0 @@
-mod consts;
-mod globaldata;
-mod gpustate;
-mod pipeline;
-mod sprite;
-mod texturearray;
-mod vertexbuffer;
-
-pub use gpustate::GPUState;
-pub use sprite::{Sprite, SubSprite};

src/render/sprite.rs

@@ -1,42 +0,0 @@
-use cgmath::{Deg, Point3};
-use galactica_content::TextureHandle;
-
-#[derive(Debug, Clone)]
-pub struct Sprite {
-	/// The sprite texture to draw
-	pub texture: TextureHandle,
-
-	/// This object's position, in world coordinates.
-	pub pos: Point3<f32>,
-
-	/// The size of this sprite,
-	/// given as height in world units.
-	pub size: f32,
-
-	/// This sprite's rotation
-	/// (relative to north, measured ccw)
-	pub angle: Deg<f32>,
-
-	/// Sprites that should be drawn relative to this sprite.
-	pub children: Option<Vec<SubSprite>>,
-}
-
-#[derive(Debug, Clone)]
-pub struct SubSprite {
-	/// The sprite texture to draw
-	pub texture: TextureHandle,
-
-	/// This object's position, in world coordinates.
-	/// This is relative to this sprite's parent.
-	pub pos: Point3<f32>,
-
-	/// The size of this sprite,
-	/// given as height in world units.
-	pub size: f32,
-
-	/// This sprite's rotation
-	/// (relative to north, measured ccw)
-	/// Just as position, this is relative to this
-	/// subsprite's parent sprite.
-	pub angle: Deg<f32>,
-}

src/shipbehavior/mod.rs

@@ -1,7 +1,7 @@
 use cgmath::{Deg, InnerSpace};
-use galactica_content as content;
 
 use crate::{
+	content,
 	inputstatus::InputStatus,
 	physics::{util, Physics, ShipHandle},
 };