Add music

js/game/audio.mjs

@@ -16,8 +16,20 @@ export function start(name) {
 }
 
 export function stop(name) {
-	if (!playing.has(name)) return;
+	if (!playing.has(name)) return false;
 	let howl = playing.get(name);
-	if (howl.playing())
+	if (howl.playing()) {
 		howl.stop();
+		return true;
+	}
+	return false;
+}
+
+export function toggle(name) {
+	if (!stop(name)) start(name);
+}
+
+export function volume(name, level) {
+	if (!playing.has(name)) return;
+	playing.get(name).volume(level);
 }

js/game/control.mjs

@@ -14,7 +14,8 @@ export const mapping = {
 	inventory: 'KeyE',
 	cycleRotation: 'KeyC',
 	toggleTrace: 'KeyT',
-	toggleMarkers: 'KeyR'
+	toggleMarkers: 'KeyR',
+	toggleMusic: 'KeyM'
 };
 
 let held, pressed;
@@ -34,11 +35,17 @@ export function tick() {
 			graphics.changeZoom(-input.mouse.scroll);
 		}
 	}
+
+	if (pressed[mapping.toggleMusic]) {
+		audio.toggle('music');
+	}
 }
 
 function tickPlaying() {
 	if (held[mapping.thrust]) {
 		playerShip.applyThrust({ forward: 1 });
+		let vol = Math.min(0.7, graphics.perspective.zoom / 10);
+		audio.volume('engine', vol);
 	} else {
 		audio.stop('engine');
 	}

js/game/edit.mjs

@@ -91,8 +91,9 @@ function getAttributes() {
 
 	info = 'Mass: ' + mass + '\n' +
 		'Fuel capacity: ' + fuel + '\n' +
-		'Thrust/mass ratio: ' + (thrust / mass).toFixed(1) + '\n' +
-		'Rotation speed: ' + (rotation / mass * 100).toFixed(1) + '\n' +
+		'Thrust/mass ratio: ' + (thrust / Math.max(mass, 1)).toFixed(1) + '\n' +
+		'Rotation speed: ' + (rotation / Math.max(mass, 1) * 100).toFixed(1)
+			+ '\n' +
 		'Cargo capacity: ' + cargo;
 }
 

js/game/events.mjs

@@ -15,6 +15,15 @@ let notLife = 0;
 
 let landedPlanets = new Set();
 
+export function playMusic() {
+	audio.start('music');
+	audio.volume('music', 0.8);
+}
+
+export function stopMusic() {
+	audio.stop('music');
+}
+
 function notify(message, time = 80) {
 	if (notification === null) return;
 	notification.text = message;
@@ -44,6 +53,10 @@ export function landShip(planet) {
 	game.state.landed = true;
 }
 
+export function howToPlay() {
+	game.state.controls = true;
+}
+
 function newPlanet(planet) {
 	let value = (planet.radius * 2 + 50) | 0;
 	landedPlanets.add(planet);
@@ -70,7 +83,6 @@ export function toggleEdit() {
 export function toggleTrace() {
 	let trace = graphics.toggleTrace();
 	notify('Path prediction: ' + (trace ? 'on' : 'off'));
-	audio.start('engine');
 }
 
 export function toggleMarkers() {

js/game/index.mjs

@@ -24,7 +24,8 @@ export async function init() {
 	gui.init();
 	input.init();
 
-	//events.startGame();
+	//events.playMusic();
+	events.startGame();
 
 	//tick(); return;