Play background sound (#19)

Reviewed-on: #19
Co-authored-by: Dominic <git@msrd0.de>
Co-committed-by: Dominic <git@msrd0.de>

build.rs

@@ -128,7 +128,11 @@ impl AssetsWriter {
 				writeln!(file, "{indent}\t\t_ctx.load_texture_from_bytes({asset_const_name:?}, {asset_const_name});")?;
 			}
 			for asset_const_name in root.sound_assets.values() {
-				writeln!(file, "{indent}\t\tcomfy::load_sound_from_bytes({asset_const_name:?}, {asset_const_name}, Default::default());")?;
+				writeln!(file, "{indent}\t\tcomfy::load_sound_from_bytes({asset_const_name:?}, {asset_const_name},")?;
+				writeln!(
+					file,
+					"{indent}\t\t\tcomfy::StaticSoundSettings::new().loop_region(..));"
+				)?;
 			}
 			for group_name in root.groups.keys() {
 				writeln!(file, "{indent}\t\t{group_name}::Assets::load(_ctx);")?;

src/activities/house/mod.rs

@@ -3,7 +3,11 @@ mod grid;
 mod player;
 mod room;
 
-use comfy::{main_camera_mut, random_i32, vec2, EngineContext, RandomRange as _};
+use crate::assets::ASSETS;
+use comfy::{
+	main_camera_mut, play_sound_id, random_i32, stop_sound_id, vec2, EngineContext,
+	RandomRange as _
+};
 use grid::Grid;
 use log::error;
 use player::Player;
@@ -23,7 +27,9 @@ pub struct HouseState {
 	/// The energy level remaining in the house. Should decrease by itself, and much
 	/// faster when inhabited by the ghost.
 	pub charge: f32,
-	pub max_charge: f32
+	pub max_charge: f32,
+
+	pub sound_playing: bool
 }
 
 impl HouseState {
@@ -43,14 +49,17 @@ impl HouseState {
 			rooms,
 			player,
 			human_layer: false,
+
 			// TODO this should be lower depending on the time elapsed
 			charge: max_charge,
-			max_charge
+			max_charge,
+
+			sound_playing: false
 		}
 	}
 }
 
-pub fn draw(state: &crate::State, _ctx: &comfy::EngineContext<'_>) {
+pub fn draw(state: &crate::State, _ctx: &EngineContext<'_>) {
 	let Some(house) = state.house() else {
 		error!("How can I render a house when I'm not in one?!?");
 		return;
@@ -70,14 +79,27 @@ pub fn draw(state: &crate::State, _ctx: &comfy::EngineContext<'_>) {
 	house.player.draw();
 }
 
-pub fn update(state: &mut crate::State, ctx: &mut comfy::EngineContext<'_>) {
+pub fn update(state: &mut crate::State, ctx: &mut EngineContext<'_>) {
+	if state.overworld.sound_playing {
+		stop_sound_id(ASSETS.music.galactic_rap_speedup);
+		state.overworld.sound_playing = false;
+	}
+
 	let mut camera = main_camera_mut();
 	camera.center = vec2(0.0, 0.0);
 
-	let house = state.house_mut(ctx);
+	let Some(house) = state.house_mut(ctx) else {
+		error!("WTF I cannot update a house without a house");
+		return;
+	};
 	let current_room = house.rooms.get(house.current_room_id).unwrap();
 	house.player.update(&current_room.grid);
 
+	if !house.sound_playing {
+		play_sound_id(ASSETS.music.mesmerizing_galaxy_loop);
+		house.sound_playing = true;
+	}
+
 	if house.player.is_moving_to_right_room(current_room) {
 		if house.current_room_id < (house.room_count - 1) {
 			house.current_room_id += 1;

src/activities/overworld/mod.rs

@@ -1,11 +1,13 @@
 use crate::{
 	activities::Activity,
+	assets::ASSETS,
 	game::{ZLayer, GHOST_DISCHARGE_RATE, GHOST_DISCHARGE_RATE_MOVEMENT},
 	State
 };
 use comfy::{
 	draw_rect_outline, draw_sprite, error, info, is_key_down, main_camera_mut,
-	texture_id, vec2, EngineContext, IVec2, KeyCode, Vec2, RED, WHITE
+	play_sound_id, stop_sound_id, texture_id, vec2, EngineContext, IVec2, KeyCode, Vec2,
+	RED, WHITE
 };
 use std::time::Instant;
 use worldgen::MovementCost;
@@ -50,9 +52,20 @@ pub fn draw(state: &State, _ctx: &EngineContext<'_>) {
 	);
 }
 
-fn update_move_player(state: &mut State, _ctx: &mut EngineContext<'_>) {
+fn update_move_player(state: &mut State, ctx: &mut EngineContext<'_>) {
 	let now = Instant::now();
 
+	if !state.overworld.sound_playing {
+		if let Some(house) = state.house_mut(ctx) {
+			if house.sound_playing {
+				stop_sound_id(ASSETS.music.mesmerizing_galaxy_loop);
+				house.sound_playing = false;
+			}
+		}
+		play_sound_id(ASSETS.music.galactic_rap_speedup);
+		state.overworld.sound_playing = true;
+	}
+
 	// Are there any pending position updates? If so, we ignore all user input and execute
 	// the pending updates.
 	if state.ghost.overworld_movement_pending != Vec2::ZERO {

src/activities/overworld/worldgen.rs

@@ -422,7 +422,9 @@ impl Chunk {
 
 #[derive(Debug, Default)]
 pub struct Overworld {
-	chunks: HashMap<IVec2, Chunk>
+	chunks: HashMap<IVec2, Chunk>,
+
+	pub sound_playing: bool
 }
 
 fn world_to_chunk_and_local_coords(world_coords: IVec2) -> (IVec2, UVec2) {

src/main.rs

@@ -59,10 +59,12 @@ impl State {
 		self.houses.get(&self.get_house_pos()?)
 	}
 
-	fn house_mut(&mut self, ctx: &mut EngineContext<'_>) -> &mut HouseState {
+	fn house_mut(&mut self, ctx: &mut EngineContext<'_>) -> Option<&mut HouseState> {
+		Some(
 			self.houses
-			.entry(self.get_house_pos().unwrap())
+				.entry(self.get_house_pos()?)
 				.or_insert_with(|| HouseState::generate_new_house(ctx))
+		)
 	}
 }