PKHeX/PKHeX.Core/Legality/Areas/EncounterArea2.cs

342 lines
13 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
namespace PKHeX.Core
{
/// <inheritdoc />
/// <summary>
/// <see cref="GameVersion.GSC"/> encounter area
/// </summary>
public sealed class EncounterArea2 : EncounterArea
{
/// <summary>
/// Gets the encounter areas with <see cref="EncounterSlot2"/> information from Generation 2 Grass/Water data.
/// </summary>
/// <param name="data">Input raw data.</param>
/// <returns>Array of encounter areas.</returns>
public static EncounterArea2[] GetArray2GrassWater(byte[] data)
{
int ofs = 0;
var areas = new List<EncounterArea2>();
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Grass, 3, 7)); // Johto Grass
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Surf, 1, 3)); // Johto Water
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Grass, 3, 7)); // Kanto Grass
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Surf, 1, 3)); // Kanto Water
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Swarm, 3, 7)); // Swarm
areas.AddRange(GetAreas2(data, ref ofs, SlotType.Special, 1, 3)); // Union Cave
return areas.ToArray();
}
// Fishing Tables are not associated to a single map; a map picks a table to use.
// For all maps that use a table, create a new EncounterArea with reference to the table's slots.
private static readonly sbyte[] convMapIDtoFishLocationID =
{
-1, 1, -1, 0, 3, 3, 3, -1, 10, 3, 2, -1, -1, 2, 3, 0,
-1, -1, 3, -1, -1, -1, 3, -1, -1, -1, -1, 0, -1, -1, 0, 9,
1, 0, 2, 2, -1, 3, 7, 3, -1, 3, 4, 8, 2, -1, 2, 1,
-1, 3, -1, -1, -1, -1, -1, 0, 2, 2, -1, -1, 3, 1, -1, -1,
-1, 2, -1, 2, -1, -1, -1, -1, -1, -1, 10, 10, -1, -1, -1, -1,
-1, 7, 0, 1, -1, 1, 1, 3, -1, -1, -1, 1, 1, 2, 3, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
/// <summary>
/// Gets the encounter areas with <see cref="EncounterSlot2"/> information from Generation 2 Grass/Water data.
/// </summary>
/// <param name="data">Input raw data.</param>
/// <returns>Array of encounter areas.</returns>
public static EncounterArea2[] GetArray2Fishing(byte[] data)
{
int ofs = 0;
var f = GetAreas2Fishing(data, ref ofs);
var areas = new List<EncounterArea2>();
for (int i = 0; i < convMapIDtoFishLocationID.Length; i++)
{
var loc = convMapIDtoFishLocationID[i];
if (loc == -1) // no table for map
continue;
areas.Add(new EncounterArea2 { Location = i, Slots = f[loc].Slots });
}
// Some maps have two tables. Fortunately, there's only two. Add the second table.
areas.Add(new EncounterArea2 { Location = 0x1B, Slots = f[1].Slots }); // Olivine City (0: Harbor, 1: City)
areas.Add(new EncounterArea2 { Location = 0x2E, Slots = f[3].Slots }); // Silver Cave (2: Inside, 3: Outside)
return areas.ToArray();
}
public static EncounterArea2[] GetArray2Headbutt(byte[] data)
{
int ofs = 0;
return GetAreas2Headbutt(data, ref ofs).ToArray();
}
private static EncounterSlot2[] GetSlots2GrassWater(byte[] data, ref int ofs, SlotType t, int slotSets, int slotCount)
{
byte[] rates = new byte[slotSets];
for (int i = 0; i < rates.Length; i++)
rates[i] = data[ofs++];
var slots = EncounterSlot2.ReadSlots(data, ref ofs, slotSets * slotCount, t, rates[0]);
if (slotSets <= 1)
return slots;
for (int i = 0; i < slotCount; i++)
{
slots[i].Time = EncounterTime.Morning;
}
for (int r = 1; r < slotSets; r++)
{
for (int i = 0; i < slotCount; i++)
{
int index = i + (r * slotCount);
slots[index].Rate = rates[r];
slots[index].SlotNumber = i;
slots[index].Time = r == 1 ? EncounterTime.Day : EncounterTime.Night;
}
}
return slots;
}
private static EncounterSlot2[] GetSlots2Fishing(byte[] data, ref int ofs, SlotType t)
{
// slot set ends with final slot having 0xFF 0x** 0x**
const int size = 3;
int end = ofs; // scan for count
while (data[end] != 0xFF)
end += size;
var count = ((end - ofs) / size) + 1;
var slots = new EncounterSlot2[count];
for (int i = 0; i < slots.Length; i++)
{
int rate = data[ofs++];
int species = data[ofs++];
int level = data[ofs++];
var type = species == 0 ? SlotType.Special : t; // day/night specific;
slots[i] = new EncounterSlot2(species, level, level, rate, type, i);
}
return slots;
}
private static EncounterSlot2[] GetSlots2Headbutt(byte[] data, ref int ofs, SlotType t)
{
// slot set ends in 0xFF
var slots = new List<EncounterSlot2>();
int tableCount = t == SlotType.Headbutt ? 2 : 1;
SlotType slottype = t;
int slot = 0;
while (tableCount != 0)
{
if (t == SlotType.Headbutt)
slottype = tableCount == 2 ? SlotType.Headbutt_Special : SlotType.Headbutt;
int rate = data[ofs++];
if (rate == 0xFF) // end of table
{
tableCount--;
continue;
}
int species = data[ofs++];
int level = data[ofs++];
slots.Add(new EncounterSlot2(species, level, level, rate, slottype, slot++));
}
return slots.ToArray();
}
private static IEnumerable<EncounterArea2> GetAreas2(byte[] data, ref int ofs, SlotType t, int slotSets, int slotCount)
{
var areas = new List<EncounterArea2>();
while (data[ofs] != 0xFF) // end
{
var location = data[ofs++] << 8 | data[ofs++];
var slots = GetSlots2GrassWater(data, ref ofs, t, slotSets, slotCount);
var area = new EncounterArea2
{
Location = location,
Slots = slots,
};
foreach (var slot in slots)
slot.Area = area;
areas.Add(area);
}
ofs++;
return areas;
}
private static List<EncounterArea2> GetAreas2Fishing(byte[] data, ref int ofs)
{
var areas = new List<EncounterArea2>();
while (ofs != 0x18C)
{
var old = GetSlots2Fishing(data, ref ofs, SlotType.Old_Rod);
var good = GetSlots2Fishing(data, ref ofs, SlotType.Good_Rod);
var super = GetSlots2Fishing(data, ref ofs, SlotType.Super_Rod);
areas.Add(new EncounterArea2
{
Slots = ArrayUtil.ConcatAll(old, good, super),
});
}
// Read TimeFishGroups
var dl = new List<SlotTemplate>();
while (ofs < data.Length)
dl.Add(new SlotTemplate(data[ofs++], data[ofs++]));
// Add TimeSlots
foreach (var area in areas)
{
var slots = area.Slots;
for (int i = 0; i < slots.Length; i++)
{
var slot = slots[i];
if (slot.Type != SlotType.Special)
continue;
Array.Resize(ref slots, slots.Length + 1);
Array.Copy(slots, i, slots, i + 1, slots.Length - i - 1); // shift slots down
slots[i + 1] = slot.Clone(); // differentiate copied slot
int index = slot.LevelMin * 2;
for (int j = 0; j < 2; j++) // load special slot info
{
var s = (EncounterSlot2)slots[i + j];
s.Species = dl[index + j].Species;
s.LevelMin = s.LevelMax = dl[index + j].Level;
s.Type = slots[i - 1].Type; // special slots are never first in a set, so copy previous type
s.Time = j == 0 ? EncounterTime.Morning | EncounterTime.Day : EncounterTime.Night;
}
}
area.Slots = slots;
}
return areas;
}
private readonly struct SlotTemplate
{
public readonly byte Species;
public readonly byte Level;
public SlotTemplate(byte species, byte level)
{
Species = species;
Level = level;
}
}
private static IEnumerable<EncounterArea2> GetAreas2Headbutt(byte[] data, ref int ofs)
{
// Read Location Table
var head = new List<EncounterArea2>();
var headID = new List<int>();
while (data[ofs] != 0xFF)
{
head.Add(new EncounterArea2
{
Location = (data[ofs++] << 8) | data[ofs++],
//Slots = null, // later
});
headID.Add(data[ofs++]);
}
ofs++;
var rock = new List<EncounterArea2>();
var rockID = new List<int>();
while (data[ofs] != 0xFF)
{
rock.Add(new EncounterArea2
{
Location = (data[ofs++] << 8) | data[ofs++],
//Slots = null, // later
});
rockID.Add(data[ofs++]);
}
ofs++;
ofs += 0x16; // jump over GetTreeMons
// Read ptr table
int[] ptr = new int[data.Length == 0x109 ? 6 : 9]; // GS : C
for (int i = 0; i < ptr.Length; i++)
ptr[i] = data[ofs++] | (data[ofs++] << 8);
int baseOffset = ptr.Min() - ofs;
// Read Tables
for (int i = 0; i < head.Count; i++)
{
int o = ptr[headID[i]] - baseOffset;
head[i].Slots = GetSlots2Headbutt(data, ref o, SlotType.Headbutt);
}
for (int i = 0; i < rock.Count; i++)
{
int o = ptr[rockID[i]] - baseOffset;
rock[i].Slots = GetSlots2Headbutt(data, ref o, SlotType.Rock_Smash);
}
return head.Concat(rock);
}
public override IEnumerable<EncounterSlot> GetMatchingSlots(PKM pkm, IReadOnlyList<EvoCriteria> chain)
{
if (!(pkm is PK2 pk2) || pk2.CaughtData == 0)
return GetSlotsFuzzy(chain);
if (pk2.Met_Location != Location)
return Array.Empty<EncounterSlot>();
return GetSlotsSpecificLevelTime(chain, pk2.Met_TimeOfDay, pk2.Met_Level);
}
private IEnumerable<EncounterSlot> GetSlotsSpecificLevelTime(IReadOnlyList<EvoCriteria> chain, int time, int lvl)
{
foreach (var slot in Slots)
{
foreach (var evo in chain)
{
if (slot.Species != evo.Species)
continue;
if (slot.Form != evo.Form)
{
if (slot.Species != (int)Species.Unown || evo.Form >= 26) // Don't yield !? forms
break;
}
if (!slot.IsLevelWithinRange(lvl))
break;
var expect = ((EncounterSlot2)slot).Time;
if (!expect.Contains(time))
break;
yield return slot;
break;
}
}
}
private IEnumerable<EncounterSlot> GetSlotsFuzzy(IReadOnlyList<EvoCriteria> chain)
{
foreach (var slot in Slots)
{
foreach (var evo in chain)
{
if (slot.Species != evo.Species)
continue;
if (slot.Form != evo.Form)
{
if (slot.Species != (int) Species.Unown || evo.Form >= 26) // Don't yield !? forms
break;
}
if (!slot.IsLevelWithinRange(evo.MinLevel, evo.Level))
break;
yield return slot;
break;
}
}
}
}
}