108 lines
3.2 KiB
JavaScript
108 lines
3.2 KiB
JavaScript
audioContext = new AudioContext()
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//Derived from marcgg's music.js
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oscillatorDefaults = {
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frequency: 440,
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type: "sine",
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endType: "none",
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length: 1,
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volume: 1,
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delay: 0,
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};
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audioObject = {};
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function oscillator(name="test",parameterObject=oscillatorDefaults){ //creates oscillator with gain node, has specifiable frequency and type, fades out over 1 second (hard-coded)
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var defaultKeys = Object.keys(oscillatorDefaults); //readability variable
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for(i = 0; i < defaultKeys.length; i++) {
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var key = defaultKeys[i]; //the indexed keyname
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if(typeof(parameterObject[key]) === "undefined") {
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parameterObject[key] = oscillatorDefaults[key];
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};
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};
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var oscillatorNodeName = `${name}Oscillator`;
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var gainNodeName = `${name}Gain`;
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audioObject[oscillatorNodeName] = audioContext.createOscillator()
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audioObject[gainNodeName] = audioContext.createGain()
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audioObject[gainNodeName].gain.value = parameterObject.volume;
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audioObject[oscillatorNodeName].type = parameterObject.type
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audioObject[oscillatorNodeName].connect(audioObject[gainNodeName])
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audioObject[oscillatorNodeName].frequency.value = parameterObject.frequency
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audioObject[gainNodeName].connect(audioContext.destination)
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audioObject[oscillatorNodeName].start(audioContext.currentTime + parameterObject.delay)
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//stopping handler
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if(parameterObject.endType === "exponential") { //starts fading immediately
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audioObject[gainNodeName].gain.exponentialRampToValueAtTime(
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0.00001, audioContext.currentTime + parameterObject.length
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);
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} else if(parameterObject.endType === "linear") { //starts fading immediately
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audioObject[gainNodeName].gain.linearRampToValueAtTime(
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0.00001, audioContext.currentTime + parameterObject.length
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);
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} else { //waits to stop
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audioObject[oscillatorNodeName].stop(audioContext.currentTime + parameterObject.delay + parameterObject.length);
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};
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};
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elements.note_block = {
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color: "#ee33ee",
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behavior: behaviors.WALL,
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state: "solid",
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category: "machines",
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density: 1200,
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hardness: 0.2,
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breakInto: ["plastic","metal_scrap","metal_scrap","metal_scrap"],
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conduct: 1,
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properties: {
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frequency: 440,
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type: "sine",
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endType: "none",
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length: 1,
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volume: 1,
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delay: 0,
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debounce: 0,
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debounceLength: tps,
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},
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tick: function(pixel) {
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var pixelSoundName = `x${pixel.x}y${pixel.y}`; //Generate unique-enough name
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var pixelPropertyObject = { //Load sound properties from pixel as object;
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frequency: pixel.frequency,
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type: pixel.type,
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endType: pixel.endType,
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length: pixel.length,
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volume: pixel.volume,
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delay: pixel.delay,
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};
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//console.log(pixelPropertyObject);
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if(pixel.debounce < 1) {
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//console.log(`${pixel.debounce} not debounced, play`);
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if(pixel.charge) {
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oscillator(pixelSoundName,pixelPropertyObject);
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delete pixel.charge;
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pixel.debounce = pixel.debounceLength;
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};
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} else if(pixel.debounce > 0) {
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//console.log(`${pixel.debounce} debounced, don't play`);
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pixel.debounce--;
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};
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},
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};
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runAfterLoad(function() {
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elements.note_block.movable = false;
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});
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if(runAfterAutogen) {
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runAfterAutogen(function() {
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elements.note_block.movable = false;
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});
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};
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