drums.js

sax.js

@@ -0,0 +1,115 @@
+const numBeats = Math.ceil(Math.random()*9);
+
+let resultString = '';
+const instructionPosibilities = [ 'n', 'p', 'm', 'b' ]
+
+for(let i = 1; i <= numBeats; i++){
+	const instructionIndex = Math.floor(Math.random()*instructionPosibilities.length);
+
+	resultString += instructionPosibilities[instructionIndex] + ' ';
+}
+
+console.log(resultString);
+
+const breakDown = (node)=>{
+
+	if(node.value < 4){
+		return node
+	}
+
+	//2 path
+	node.twoPath = {};
+	node.twoPath.left = { value: 2 }
+	node.twoPath.right = breakDown({value:node.value-2})
+
+	//3 path
+	if(node.value > 4){
+		node.threePath = {}
+		node.threePath.left = { value: 3 }
+		node.threePath.right = breakDown({value:node.value-3})
+	}
+
+	return node;
+}
+
+const tree = breakDown({value:numBeats});
+
+//console.dir(tree, {depth:null});
+
+const getLeaves = (node)=>{
+	if(node.twoPath === undefined){
+		return node.value;
+	}
+
+	let twoPathResult = [];
+	const twoPathLeftValue = getLeaves(node.twoPath.left);
+	const twoPathRightValue = getLeaves(node.twoPath.right);
+	if(Number.isInteger(twoPathRightValue)){
+		twoPathResult[0] = twoPathLeftValue;
+		twoPathResult[1] = twoPathRightValue;
+	} else {
+		if(Number.isInteger(twoPathRightValue[0])){
+			twoPathRightValue.unshift(twoPathLeftValue);
+		} else {
+			for(let subArray of twoPathRightValue){
+				subArray.unshift(twoPathLeftValue);
+			}
+		}
+		twoPathResult = twoPathRightValue;
+	}
+
+	let threePathResult = [];
+	if(node.threePath !== undefined){
+		const threePathLeftValue = getLeaves(node.threePath.left);
+		const threePathRightValue = getLeaves(node.threePath.right);
+		if(Number.isInteger(threePathRightValue)){
+			threePathResult[0] = threePathLeftValue;
+			threePathResult[1] = threePathRightValue;
+		} else {
+			if(Number.isInteger(threePathRightValue[0])){
+				threePathRightValue.unshift(threePathLeftValue);
+			} else {
+				for(let subArray of threePathRightValue){
+					subArray.unshift(threePathLeftValue);
+				}
+			}
+			threePathResult = threePathRightValue;
+		}
+	}
+	
+	if(threePathResult.length === 0){
+		return twoPathResult;
+	} else {
+		if(Number.isInteger(twoPathResult[0])){
+			if(Number.isInteger(threePathResult[0])){
+				return [twoPathResult, threePathResult]
+			} else {
+				const result = [twoPathResult];
+				result.push(threePathResult[0]);
+				return result;
+			}
+		} else {
+			if(Number.isInteger(threePathResult)){
+				twoPathResult.push(threePathResult)
+			} else {
+				if(Number.isInteger(threePathResult[0])){
+					twoPathResult.push(threePathResult)
+				} else {
+					twoPathResult = twoPathResult.concat(threePathResult);
+				}
+			}
+			return twoPathResult;
+		}
+	}
+}
+const claves = getLeaves(tree);
+if(Number.isInteger(claves)){
+	console.log(claves);
+} else {
+	if(Number.isInteger(claves[0])){
+		console.log(claves);
+	} else {
+		const clave = claves[Math.floor(Math.random()*claves.length)];
+		console.log(clave);
+	}
+}