97 lines
2.2 KiB
TypeScript
97 lines
2.2 KiB
TypeScript
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namespace AdventOfCode2019_12_1
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{
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const DAY = 12;
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const PROBLEM = 1;
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export async function run()
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{
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let input = await AdventOfCode.getInput(DAY);
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if (input == null) return;
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let moons = input
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.trim()
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.split(new RegExp('\r?\n'))
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.map(p => p.replace(new RegExp('[<>\\sxyz=]', 'g'), ""))
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.map(p => p.split(",").map(p => parseInt(p)))
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.map(p => new Moon(p[0], p[1], p[2]));
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for(let i=0; i<1000;i++)
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{
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output(i, moons);
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step(moons);
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}
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output(1000, moons);
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const energy = moons.map(m => m.getEnergy()).reduce((a,b) => a+b);
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AdventOfCode.output(DAY, PROBLEM, energy.toString());
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}
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function output(i: number, moons: Moon[])
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{
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AdventOfCode.outputConsole("======== "+i+" ========");
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for(let m of moons) AdventOfCode.outputConsole(m.toString());
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AdventOfCode.outputConsole();
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}
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function step(moons: Moon[])
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{
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for(let i1=0; i1<moons.length; i1++)
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for(let i2=i1+1; i2<moons.length; i2++)
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{
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if (moons[i1].x<moons[i2].x) { moons[i1].dx++; moons[i2].dx--; }
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if (moons[i1].x>moons[i2].x) { moons[i1].dx--; moons[i2].dx++; }
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if (moons[i1].y<moons[i2].y) { moons[i1].dy++; moons[i2].dy--; }
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if (moons[i1].y>moons[i2].y) { moons[i1].dy--; moons[i2].dy++; }
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if (moons[i1].z<moons[i2].z) { moons[i1].dz++; moons[i2].dz--; }
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if (moons[i1].z>moons[i2].z) { moons[i1].dz--; moons[i2].dz++; }
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}
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for(let i=0; i<moons.length; i++)
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{
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moons[i].x += moons[i].dx;
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moons[i].y += moons[i].dy;
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moons[i].z += moons[i].dz;
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}
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}
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class Moon
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{
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x: number;
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y: number;
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z: number;
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dx: number = 0;
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dy: number = 0;
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dz: number = 0;
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constructor(x: number, y: number, z: number)
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{
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this.x=x;
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this.y=y;
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this.z=z;
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}
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public toString(): string {
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return `pos=<x=${this.x}, y=${this.y}, z=${this.z}>, vel=<x=${this.dx}, y=${this.dy}, z=${this.dz}> [pot=${this.getPotEnergy()}|kin=${this.getKinEnergy()}] => ${this.getEnergy()}`;
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}
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public getPotEnergy(): number {
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return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z);
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}
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public getKinEnergy(): number {
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return Math.abs(this.dx)+Math.abs(this.dy)+Math.abs(this.dz);
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}
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public getEnergy(): number {
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return this.getPotEnergy() * this.getKinEnergy();
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}
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}
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}
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