38 lines
862 B
JavaScript
38 lines
862 B
JavaScript
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// cool today's puzzle is basically a turtle
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const fs = require('fs');
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const instructions = fs.readFileSync('input.txt', 'utf-8').split('\n');
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// position and direcion start at 0
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let x = y = d = 0;
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instructions.forEach((instruction, i) => {
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console.log(x,y,d)
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action = instruction[0];
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arg = Number(instruction.slice(1));
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switch (action) {
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case 'N':
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y+=arg;
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break;
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case 'S':
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y-=arg;
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break;
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case 'E':
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x+=arg;
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break;
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case 'W':
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x-=arg;
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break;
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case 'L':
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d-=arg;
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break;
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case 'R':
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d+=arg;
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break;
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case 'F':
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y -= Math.round(arg * Math.sin(d*Math.PI/180));
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x += Math.round(arg * Math.cos(d*Math.PI/180));
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break;
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default:
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console.log('instruction no', i+1, action,'invald')
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}
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})
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console.log(x,y,d)
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console.log(Math.abs(x)+ Math.abs(y))
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