using System;
using System.Collections.Generic;
namespace PKHeX.Core
{
///
/// Generation 1 Evolution Branch Entries
///
public static class EvolutionSet1
{
private static EvolutionMethod GetMethod(ReadOnlySpan data)
{
int method = data[0];
int species = data[1];
var arg = data[2];
return (method == 1)
? new EvolutionMethod(method, species, level: arg)
: new EvolutionMethod(method, species, argument: arg);
}
public static IReadOnlyList GetArray(ReadOnlySpan data, int maxSpecies)
{
var evos = new EvolutionMethod[maxSpecies + 1][];
int ofs = 0;
const int bpe = 3;
for (int i = 0; i < evos.Length; i++)
{
int count = data[ofs];
ofs++;
if (count == 0)
{
evos[i] = Array.Empty();
continue;
}
var m = new EvolutionMethod[count];
for (int j = 0; j < m.Length; j++)
{
m[j] = GetMethod(data.Slice(ofs, bpe));
ofs += bpe;
}
evos[i] = m;
}
return evos;
}
}
}