public void ApplyGravity(Moon other)
{
if (other == this)
{
return;
}
if (x < other.x)
{
dX++;
}
else if (x > other.x)
{
dX--;
}
if (y < other.y)
{
dY++;
}
else if (y > other.y)
{
dY--;
}
if (z < other.z)
{
dZ++;
}
else if (z > other.z)
{
dZ--;
}
}
public override object Task1()
{
Moon[] moons = new Moon[input.Length];
for (int i = 0; i < input.Length; i++)
{
string[] parts = input[i].Substring(1, input[i].Length - 2).Split(", ");
moons[i] = new Moon(int.Parse(parts[0].Split('=')[1]),
int.Parse(parts[1].Split('=')[1]),
int.Parse(parts[2].Split('=')[1]));
}
for (int _ = 0; _ < 1000; _++)
{
SimulateStep(moons);
}
long energy = 0;
for (int i = 0; i < moons.Length; i++)
{
energy += NRG(moons[i].Position) * NRG(moons[i].Velocity);
}
return(energy);
}
static Moon[] LoadMoons(string filename)
{
List <Moon> moons = new();
foreach (var line in FileIterator.Lines(filename))
{
var groups = line.Groups(@"<x=([-\d]+), y=([-\d]+), z=([-\d]+)>");
var moon = new Moon(int.Parse(groups[0]), int.Parse(groups[1]), int.Parse(groups[2]));
moons.Add(moon);
}
return(moons.ToArray());
}
private IList <Moon> ReadAndParse()
{
IList <string> lines = AdventUtils.ReadFileByLines(@"..\..\..\Files\Day12.txt");
IList <Moon> Moons = new List <Moon>();
foreach (string line in lines)
{
string[] cordinates = line.Split(',');
Moon moon = new Moon();
moon.PosX = long.Parse(cordinates[0].Substring(cordinates[0].IndexOf('=') + 1));
moon.PosY = long.Parse(cordinates[1].Substring(cordinates[1].IndexOf('=') + 1));
moon.PosZ = long.Parse(cordinates[2].Substring(cordinates[2].IndexOf('=') + 1, cordinates[2].Length - 4));
Moons.Add(moon);
}
return(Moons);
}
public override object Task2()
{
Moon[] moons = new Moon[input.Length];
for (int i = 0; i < input.Length; i++)
{
string[] parts = input[i].Substring(1, input[i].Length - 2).Split(", ");
moons[i] = new Moon(int.Parse(parts[0].Split('=')[1]),
int.Parse(parts[1].Split('=')[1]),
int.Parse(parts[2].Split('=')[1]));
}
long[] intervals = new long[3];
int found = 0;
for (int step = 1; found < 3; step++)
{
SimulateStep(moons);
bool[] stopped = new bool[] { true, true, true };
for (int i = 0; i < moons.Length; i++)
{
stopped[0] &= moons[i].Velocity.X == 0;
stopped[1] &= moons[i].Velocity.Y == 0;
stopped[2] &= moons[i].Velocity.Z == 0;
}
for (int i = 0; i < intervals.Length; i++)
{
if (intervals[i] == 0 && stopped[i])
{
intervals[i] = step * 2;
found++;
}
}
}
return(LCM(intervals));
}
