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www.mikescher.com/www/statics/aoc/2018/10-1.linq

57 lines
1.0 KiB
C#

<Query Kind="Program" />
class P { public int XX, YY, VX, VY; }
List<P> input;
void Main()
{
input = File
.ReadAllLines(Path.Combine(Path.GetDirectoryName(Util.CurrentQueryPath), @"10_input.txt"))
.Where(p => !string.IsNullOrWhiteSpace(p))
.Select(l => new P
{
XX=int.Parse(l.Substring(10,6).Trim()),
YY=int.Parse(l.Substring(18,6).Trim()),
VX=int.Parse(l.Substring(36,2).Trim()),
VY=int.Parse(l.Substring(40,2).Trim()),
})
.ToList();
for (;;)
{
foreach (var v in input) { v.XX += v.VX; v.YY += v.VY; }
if (input.Any(Alone)) continue;
Print();
return;
}
}
bool Alone(P p) => !input.Any(i => i != p && Math.Abs(i.XX-p.XX)<=1 && Math.Abs(i.YY-p.YY)<=1);
void Print()
{
int minX = input.Min(i => i.XX);
int maxX = input.Max(i => i.XX);
int minY = input.Min(i => i.YY);
int maxY = input.Max(i => i.YY);
var b = new StringBuilder();
for (int y = minY; y <= maxY; y++)
{
for (int x = minX; x <= maxX; x++)
{
b.Append(input.Any(i => i.XX==x&&i.YY==y)?'#':'.');
}
b.AppendLine();
}
b.ToString().Dump();
}