mac-container-dev
76bad46d09
Loading screen, main menu, 3D flight sim with CRT post-processing, procedural terrain, airport with buildings, low-poly aircraft, flight physics, HUD instruments, and sound. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
78 lines
2.3 KiB
JavaScript
78 lines
2.3 KiB
JavaScript
export class Sound {
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constructor() {
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this.ctx = null;
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this.engineOsc = null;
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this.engineGain = null;
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this.initialized = false;
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}
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init() {
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if (this.initialized) return;
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try {
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this.ctx = new (window.AudioContext || window.webkitAudioContext)();
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this.engineOsc = this.ctx.createOscillator();
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this.engineOsc.type = 'sawtooth';
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this.engineGain = this.ctx.createGain();
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this.engineGain.gain.value = 0;
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// Low-pass filter for muffled engine sound
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this.engineFilter = this.ctx.createBiquadFilter();
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this.engineFilter.type = 'lowpass';
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this.engineFilter.frequency.value = 300;
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this.engineOsc.connect(this.engineFilter);
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this.engineFilter.connect(this.engineGain);
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this.engineGain.connect(this.ctx.destination);
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this.engineOsc.start();
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this.initialized = true;
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} catch {
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// Audio not available, silently fail
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}
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}
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update(throttle) {
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if (!this.initialized || !this.engineOsc) return;
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const baseFreq = 60;
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const maxFreq = 180;
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this.engineOsc.frequency.value = baseFreq + throttle * (maxFreq - baseFreq);
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this.engineGain.gain.value = Math.min(throttle * 0.08, 0.08);
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this.engineFilter.frequency.value = 200 + throttle * 200;
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}
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beep(frequency = 800, duration = 80) {
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if (!this.initialized) return;
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try {
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const osc = this.ctx.createOscillator();
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const gain = this.ctx.createGain();
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osc.type = 'square';
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osc.frequency.value = frequency;
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gain.gain.value = 0.05;
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osc.connect(gain);
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gain.connect(this.ctx.destination);
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osc.start();
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osc.stop(this.ctx.currentTime + duration / 1000);
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} catch {
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// Ignore audio errors
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}
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}
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takeoffSound() {
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if (!this.initialized) return;
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try {
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const osc = this.ctx.createOscillator();
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const gain = this.ctx.createGain();
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osc.type = 'triangle';
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osc.frequency.value = 400;
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osc.frequency.linearRampToValueAtTime(800, this.ctx.currentTime + 0.3);
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gain.gain.value = 0.08;
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gain.gain.linearRampToValueAtTime(0, this.ctx.currentTime + 0.5);
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osc.connect(gain);
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gain.connect(this.ctx.destination);
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osc.start();
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osc.stop(this.ctx.currentTime + 0.5);
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} catch {
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// Ignore
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}
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}
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}
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