public static long Solve(IEnumerable <string> input, int stepsCount = 1000)
{
var moons = input.Select(Moon.Parse).ToArray();
var positionX = moons.Select(i => i.X).ToArray();
var positionY = moons.Select(i => i.Y).ToArray();
var positionZ = moons.Select(i => i.Z).ToArray();
var velocityX = new int[moons.Length];
var velocityY = new int[moons.Length];
var velocityZ = new int[moons.Length];
for (var i = 0; i < stepsCount; i++)
{
Moon.ApplyGravity(positionX, velocityX);
Moon.ApplyGravity(positionY, velocityY);
Moon.ApplyGravity(positionZ, velocityZ);
Moon.ApplyVelocity(positionX, velocityX);
Moon.ApplyVelocity(positionY, velocityY);
Moon.ApplyVelocity(positionZ, velocityZ);
}
var result = 0L;
for (var i = 0; i < positionX.Length; i++)
{
long potential = Math.Abs(positionX[i]) + Math.Abs(positionY[i]) + Math.Abs(positionZ[i]);
long kinetic = Math.Abs(velocityX[i]) + Math.Abs(velocityY[i]) + Math.Abs(velocityZ[i]);
result += (potential * kinetic);
}
return(result);
}
private static int FindLoopLength(int[] positions)
{
var velocity = new int[positions.Length];
var originalPositions = positions.ToArray();
var stepsCount = 0;
var finish = false;
while (!finish)
{
stepsCount++;
Moon.ApplyGravity(positions, velocity);
Moon.ApplyVelocity(positions, velocity);
finish = true;
for (var i = 0; i < positions.Length; i++)
{
if (positions[i] != originalPositions[i] || velocity[i] != 0)
{
finish = false;
break;
}
}
}
return(stepsCount);
}
public void ChangeV(Moon other)
{
if (x < other.x)
{
++vx;
}
if (x > other.x)
{
--vx;
}
if (y < other.y)
{
++vy;
}
if (y > other.y)
{
--vy;
}
if (z < other.z)
{
++vz;
}
if (z > other.z)
{
--vz;
}
}
//Should really just parse these.
//Input
//<x=-6, y=2, z=-9>
//<x=12, y=-14, z=-4>
//<x=9, y=5, z=-6>
//<x=-1, y=-4, z=9>
//Test1
//<x=-1, y=0, z=2>
//<x=2, y=-10, z=-7>
//<x=4, y=-8, z=8>
//<x=3, y=5, z=-1>
static void Main()
{
////input
Moon[] moons = new Moon[]
{
new Moon('I', new Vector3(-6, 2, -9)),
new Moon('E', new Vector3(12, -14, -4)),
new Moon('G', new Vector3(9, 5, -6)),
new Moon('C', new Vector3(-1, -4, 9))
};
//test1
//Moon[] moons = new Moon[]
//{
// new Moon('I', new Vector3(-1, 0, 2)),
// new Moon('E', new Vector3(2, -10, -7)),
// new Moon('G', new Vector3(4, -8, 8)),
// new Moon('C', new Vector3(3, 5, -1))
//};
//int steps = 1000;
// 2772 is the steps for the test
moons = ProcessOrbit(moons);
//Part1
//float enargy = 0;
//foreach (Moon m in moons)
//{
// enargy += m.GetEnargy();
//}
//Console.WriteLine(String.Format("Enargy in system: {0}", enargy.ToString()));
Console.ReadLine();
}
public void UpdateVel(Moon other)
{
if (other.x > x)
{
vx++;
}
else if (other.x < x)
{
vx--;
}
if (other.y > y)
{
vy++;
}
else if (other.y < y)
{
vy--;
}
if (other.z > z)
{
vz++;
}
else if (other.z < z)
{
vz--;
}
}
public MoonSystem(Moon _a, Moon _b, Moon _c, Moon _d)
{
a = _a;
b = _b;
c = _c;
d = _d;
}
public void ApplyGravity(Moon interactingMoon)
{
if (interactingMoon.Position.X > Position.X)
{
Velocity.X++;
}
else if (interactingMoon.Position.X < Position.X)
{
Velocity.X--;
}
if (interactingMoon.Position.Y > Position.Y)
{
Velocity.Y++;
}
else if (interactingMoon.Position.Y < Position.Y)
{
Velocity.Y--;
}
if (interactingMoon.Position.Z > Position.Z)
{
Velocity.Z++;
}
else if (interactingMoon.Position.Z < Position.Z)
{
Velocity.Z--;
}
}
static Moon[] createListOfMoons(List <List <int> > inputList)
{
Moon[] listOfMoons = new Moon[4];
for (int i = 0; i < 4; i++)
{
listOfMoons[i] = new Moon(inputList[i]);
}
return(listOfMoons);
}
private void ApplyGravityInternal(Moon a, Moon b)
{
int diff = a.Position.X - b.Position.X;
a.Velocity.X += (diff < 0) ? 1 : (diff > 0 ? -1 : 0);
diff = a.Position.Y - b.Position.Y;
a.Velocity.Y += (diff < 0) ? 1 : (diff > 0 ? -1 : 0);
diff = a.Position.Z - b.Position.Z;
a.Velocity.Z += (diff < 0) ? 1 : (diff > 0 ? -1 : 0);
}
static void UpdateAllVelocities(Moon[] moons)
{
for (int i = 0; i < moons.Length; i++)
{
Moon a = moons[i];
for (int j = i + 1; j < moons.Length; j++)
{
Moon b = moons[j];
Moon.UpdateVelocities(a, b);
}
}
}
public void ApplyGravity(Dimension dimension, Moon moon)
{
if (Position[dimension] < moon.Position[dimension])
{
Velocity[dimension] += 1;
moon.Velocity[dimension] -= 1;
}
if (Position[dimension] > moon.Position[dimension])
{
Velocity[dimension] -= 1;
moon.Velocity[dimension] += 1;
}
}
static void ComperMoonsZ(Moon moonA, Moon moonB)
{
//need three way logic here for ==s
int vz = 0;
vz = moonA.Postion.Z < moonB.Postion.Z ? 1 : -1;
vz = moonA.Postion.Z == moonB.Postion.Z ? 0 : vz;
Vector3 va = new Vector3(0, 0, vz);
moonA.AddVelocity(va);
Vector3 vb = new Vector3(0, 0, vz * -1);
moonB.AddVelocity(vb);
}
//Axises are indepent so we should split this out really
//Just doing one for testing now
static void ComperMoonsX(Moon moonA, Moon moonB)
{
//need three way logic here for ==s
int vx = 0;
vx = moonA.Postion.X < moonB.Postion.X ? 1 : -1;
vx = moonA.Postion.X == moonB.Postion.X ? 0 : vx;
Vector3 va = new Vector3(vx, 0, 0);
moonA.AddVelocity(va);
Vector3 vb = new Vector3(vx * -1, 0, 0);
moonB.AddVelocity(vb);
}
public override void First()
{
Moon[] moons = new Moon[] {
new Moon(14, 2, 8),
new Moon(7, 4, 10),
new Moon(1, 17, 16),
new Moon(-4, -1, 1)
};
for (int i = 0; i < 1000; i++)
{
Step(moons);
}
var totalEnergy = moons.Sum(m => m.PotentialEnergy * m.KineticEnergy);
Echo($"Total energy after 1000 steps: {totalEnergy}");
ValidateAnswer(totalEnergy, 9139);
}
static void ComperMoonsY(Moon moonA, Moon moonB)
{
//need three way logic here for ==s
int vy = 0;
vy = moonA.Postion.Y < moonB.Postion.Y ? 1 : -1;
vy = moonA.Postion.Y == moonB.Postion.Y ? 0 : vy;
Vector3 va = new Vector3(0, vy, 0);
moonA.AddVelocity(va);
Vector3 vb = new Vector3(0, vy * -1, 0);
moonB.AddVelocity(vb);
}
static List <Moon> Parse(string[] lines)
{
var moons = new List <Moon>();
var regex = new Regex(@"<x=(?<x>(.+?)), y=(?<y>(.+?)), z=(?<z>(.+?))>");
foreach (var l in lines)
{
var match = regex.Match(l);
var g = match.Groups;
var m = new Moon();
m.Position =
new Vec3(
int.Parse(g["x"].Value),
int.Parse(g["y"].Value),
int.Parse(g["z"].Value));
moons.Add(m);
}
return(moons);
}
static void updateVelocities(Moon moonOne, Moon moonTwo, int i)
{
Tuple <int, int>[] posn = new Tuple <int, int> [3];
posn[0] = new Tuple <int, int>(moonOne.Px, moonTwo.Px);
posn[1] = new Tuple <int, int>(moonOne.Py, moonTwo.Py);
posn[2] = new Tuple <int, int>(moonOne.Pz, moonTwo.Pz);
if (posn[i].Item1 != posn[i].Item2)
{
if (posn[i].Item1 < posn[i].Item2)
{
moonOne.updateVelocity(i, 1);
moonTwo.updateVelocity(i, -1);
}
else if (posn[i].Item1 > posn[i].Item2)
{
moonOne.updateVelocity(i, -1);
moonTwo.updateVelocity(i, 1);
}
}
}
// runs forever..
public void Second()
{
Moon[] moons = new Moon[] {
new Moon(14, 2, 8),
new Moon(7, 4, 10),
new Moon(1, 17, 16),
new Moon(-4, -1, 1)
};
Step(moons);
var step = 1L;
while (!Repeat(moons))
//while (!moons.All(m => m.Repeat))
{
Step(moons);
step++;
if (step % 1000000 == 0)
{
Console.Write('.');
}
}
Echo($"Number of steps {step}");
}
public void ApplyVelocity(Moon m)
{
m.X += m.vX;
m.Y += m.vY;
m.Z += m.vZ;
}
public void part1test2()
{
var moons = new[] { Moon.Parse("<x=-8, y=-10, z=0>"),
Moon.Parse("<x=5, y=5, z=10>"),
Moon.Parse("<x=2, y=-7, z=3>"),
Moon.Parse("<x=9, y=-8, z=-3>") };
//After 0 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-8, y=-10, z=0>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=5, y=5, z=10>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=-7, z=3>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=9, y=-8, z=-3>, vel=<x=0, y=0, z=0>"));
Repeat(10, () => Step(moons));
//After 10 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-9, y=-10, z=1>, vel=<x=-2, y=-2, z=-1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=4, y=10, z=9>, vel=<x=-3, y=7, z=-2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=8, y=-10, z=-3>, vel=<x=5, y=-1, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=5, y=-10, z=3>, vel=<x=0, y=-4, z=5>"));
Repeat(10, () => Step(moons));
//After 20 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-10, y=3, z=-4>, vel=<x=-5, y=2, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=5, y=-25, z=6>, vel=<x=1, y=1, z=-4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=13, y=1, z=1>, vel=<x=5, y=-2, z=2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=0, y=1, z=7>, vel=<x=-1, y=-1, z=2>"));
Repeat(10, () => Step(moons));
//After 30 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=15, y=-6, z=-9>, vel=<x=-5, y=4, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-4, y=-11, z=3>, vel=<x=-3, y=-10, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-1, z=11>, vel=<x=7, y=4, z=3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-3, y=-2, z=5>, vel=<x=1, y=2, z=-3>"));
Repeat(10, () => Step(moons));
//After 40 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=14, y=-12, z=-4>, vel=<x=11, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-1, y=18, z=8>, vel=<x=-5, y=2, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-5, y=-14, z=8>, vel=<x=1, y=-2, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=0, y=-12, z=-2>, vel=<x=-7, y=-3, z=-3>"));
Repeat(10, () => Step(moons));
//After 50 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-23, y=4, z=1>, vel=<x=-7, y=-1, z=2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=20, y=-31, z=13>, vel=<x=5, y=3, z=4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-4, y=6, z=1>, vel=<x=-1, y=1, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=15, y=1, z=-5>, vel=<x=3, y=-3, z=-3>"));
Repeat(10, () => Step(moons));
//After 60 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=36, y=-10, z=6>, vel=<x=5, y=0, z=3>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-18, y=10, z=9>, vel=<x=-3, y=-7, z=5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=8, y=-12, z=-3>, vel=<x=-2, y=1, z=-7>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-18, y=-8, z=-2>, vel=<x=0, y=6, z=-1>"));
Repeat(10, () => Step(moons));
//After 70 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-33, y=-6, z=5>, vel=<x=-5, y=-4, z=7>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=13, y=-9, z=2>, vel=<x=-2, y=11, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=11, y=-8, z=2>, vel=<x=8, y=-6, z=-7>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=17, y=3, z=1>, vel=<x=-1, y=-1, z=-3>"));
Repeat(10, () => Step(moons));
//After 80 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=30, y=-8, z=3>, vel=<x=3, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-2, y=-4, z=0>, vel=<x=4, y=-13, z=2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-18, y=-7, z=15>, vel=<x=-8, y=2, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-2, y=-1, z=-8>, vel=<x=1, y=8, z=0>"));
Repeat(10, () => Step(moons));
//After 90 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-25, y=-1, z=4>, vel=<x=1, y=-3, z=4>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=0>, vel=<x=-3, y=13, z=-1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=32, y=-8, z=14>, vel=<x=5, y=-4, z=6>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-1, y=-2, z=-8>, vel=<x=-3, y=-6, z=-9>"));
Repeat(10, () => Step(moons));
//After 100 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=8, y=-12, z=-9>, vel=<x=-7, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=13, y=16, z=-3>, vel=<x=3, y=-11, z=-5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-29, y=-11, z=-1>, vel=<x=-3, y=7, z=4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=16, y=-13, z=23>, vel=<x=7, y=1, z=1>"));
Assert.That(GetTotalEnergy(moons), Is.EqualTo(1940));
}
public void part1test1()
{
var moons = new[] { Moon.Parse("<x=-1, y=0, z=2>"),
Moon.Parse("<x=2, y=-10, z=-7>"),
Moon.Parse("<x=4, y=-8, z=8>"),
Moon.Parse("<x=3, y=5, z=-1>") };
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=0, z=2>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-10, z=-7>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=4, y=-8, z=8>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=5, z=-1>, vel=<x=0, y=0, z=0>"));
Step(moons);
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-1, z=1>, vel=<x=3, y=-1, z=-1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=-4>, vel=<x=1, y=3, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=1, y=-7, z=5>, vel=<x=-3, y=1, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=2, z=0>, vel=<x=-1, y=-3, z=1>"));
Step(moons);
//After 2 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=-3, z=-1>, vel=<x=3, y=-2, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-2, z=2>, vel=<x=-2, y=5, z=6>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=-1>, vel=<x=0, y=3, z=-6>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=2>, vel=<x=-1, y=-6, z=2>"));
Step(moons);
//After 3 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=-6, z=-1>, vel=<x=0, y=-3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=0, y=0, z=6>, vel=<x=-1, y=2, z=4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=1, z=-5>, vel=<x=1, y=5, z=-4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=-8, z=2>, vel=<x=0, y=-4, z=0>"));
Step(moons);
//After 4 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-8, z=0>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=1, z=7>, vel=<x=2, y=1, z=1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=3, z=-6>, vel=<x=0, y=2, z=-1>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=1>, vel=<x=1, y=-1, z=-1>"));
Step(moons);
//After 5 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=-9, z=2>, vel=<x=-3, y=-1, z=2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=4, y=1, z=5>, vel=<x=2, y=0, z=-2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=2, z=-4>, vel=<x=0, y=-1, z=2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=-1>, vel=<x=1, y=2, z=-2>"));
Step(moons);
//After 6 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=-7, z=3>, vel=<x=0, y=2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=3, y=0, z=0>, vel=<x=-1, y=-1, z=-5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-2, z=1>, vel=<x=1, y=-4, z=5>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=-4, z=-2>, vel=<x=0, y=3, z=-1>"));
Step(moons);
//After 7 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-2, z=1>, vel=<x=3, y=5, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=-4>, vel=<x=-2, y=-4, z=-4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=5>, vel=<x=0, y=-5, z=4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=0, z=0>, vel=<x=-1, y=4, z=2>"));
Step(moons);
//After 8 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=2, z=-2>, vel=<x=3, y=4, z=-3>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-7, z=-5>, vel=<x=1, y=-3, z=-1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-9, z=6>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=1, z=3>, vel=<x=-1, y=1, z=3>"));
Step(moons);
//After 9 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=3, z=-4>, vel=<x=0, y=1, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=-3>, vel=<x=0, y=-2, z=2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-8, z=4>, vel=<x=0, y=1, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=1, z=5>, vel=<x=0, y=0, z=2>"));
Step(moons);
//After 10 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=1, z=-3>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-8, z=0>, vel=<x=-1, y=1, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-6, z=1>, vel=<x=3, y=2, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=0, z=4>, vel=<x=1, y=-1, z=-1>"));
Assert.That(GetTotalEnergy(moons), Is.EqualTo(179));
int counter = 10;
while (true)
{
if (GetTotalEnergy(moons) == 0 && moons[0].ToString() == "pos=<x=-1, y=0, z=2>, vel=<x=0, y=0, z=0>")
{
break;
}
Step(moons);
counter++;
}
Assert.That(counter, Is.EqualTo(2772));
Console.WriteLine(counter);
}
public void ApplyGravity(Moon other)
{
ApplyGravityInternal(this, other);
ApplyGravityInternal(other, this);
}
private bool MoonEqual(Moon a, Moon b)
{
return(a.x == b.x && a.y == b.y && a.z == b.z &&
a.vx == b.vx && a.vy == b.vy && a.vz == b.vz);
}
public static void ApplyGravity(Moon m1, Moon m2)
{
ApplyGravity(m1.X, m2.X, ref m1.vX, ref m2.vX);
ApplyGravity(m1.Y, m2.Y, ref m1.vY, ref m2.vY);
ApplyGravity(m1.Z, m2.Z, ref m1.vZ, ref m2.vZ);
}
static void ComperMoons(Moon moonA, Moon moonB)
{
ComperMoonsX(moonA, moonB);
ComperMoonsY(moonA, moonB);
ComperMoonsZ(moonA, moonB);
}
public void AddMoon(Moon moon)
{
this.Moons.Add(moon);
}
public void ApplyGravity(Moon moon)
{
ApplyGravity(Dimension.X, moon);
ApplyGravity(Dimension.Y, moon);
ApplyGravity(Dimension.Z, moon);
}
