mirror of
https://github.com/kwsch/PKHeX
synced 2024-11-23 20:43:07 +00:00
233 lines
9.9 KiB
C#
233 lines
9.9 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
|
|
namespace PKHeX.Core
|
|
{
|
|
/// <summary>
|
|
/// Logic for converting Item IDs between the generation specific value sets.
|
|
/// </summary>
|
|
internal static class ItemConverter
|
|
{
|
|
/// <summary>Unused item ID, placeholder for item/sprite finding</summary>
|
|
private const ushort NaN = 128;
|
|
|
|
/// <summary>
|
|
/// Checks if the item can be kept during 3->4 conversion.
|
|
/// </summary>
|
|
/// <param name="item">Generation 3 Item ID.</param>
|
|
/// <returns>True if transferable, False if not transferable.</returns>
|
|
internal static bool IsItemTransferable34(ushort item) => item != NaN && item > 0;
|
|
|
|
/// <summary>
|
|
/// Converts a Generation 3 Item ID to Generation 4+ Item ID.
|
|
/// </summary>
|
|
/// <param name="item">Generation 3 Item ID.</param>
|
|
/// <returns>Generation 4+ Item ID.</returns>
|
|
internal static ushort GetItemFuture3(ushort item) => item > arr3.Length ? NaN : arr3[item];
|
|
|
|
/// <summary>
|
|
/// Converts a Generation 2 Item ID to Generation 4+ Item ID.
|
|
/// </summary>
|
|
/// <param name="item">Generation 2 Item ID.</param>
|
|
/// <returns>Generation 4+ Item ID.</returns>
|
|
internal static ushort GetItemFuture2(byte item) => item > arr2.Length ? NaN : arr2[item];
|
|
|
|
/// <summary>
|
|
/// Converts a Generation 4+ Item ID to Generation 3 Item ID.
|
|
/// </summary>
|
|
/// <param name="item">Generation 4+ Item ID.</param>
|
|
/// <returns>Generation 3 Item ID.</returns>
|
|
private static ushort GetItemOld3(ushort item)
|
|
{
|
|
if (item == NaN)
|
|
return 0;
|
|
int index = Array.IndexOf(arr3, item);
|
|
return (ushort)Math.Max(0, index);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a Generation 4+ Item ID to Generation 2 Item ID.
|
|
/// </summary>
|
|
/// <param name="item">Generation 4+ Item ID.</param>
|
|
/// <returns>Generation 2 Item ID.</returns>
|
|
private static byte GetItemOld2(ushort item)
|
|
{
|
|
if (item == NaN)
|
|
return 0;
|
|
int index = Array.IndexOf(arr2, item);
|
|
return (byte)Math.Max(0, index);
|
|
}
|
|
|
|
#region Item Mapping Tables
|
|
/// <summary> Gen2 items (index) and their corresponding Gen4 item ID (value) </summary>
|
|
private static readonly ushort[] arr2 =
|
|
{
|
|
000, 001, 002, 213, 003, 004, NaN, 450, 081, 018, // 0
|
|
019, 020, 021, 022, 023, 024, 025, 026, 017, 078, // 1
|
|
079, 041, 082, 083, 084, NaN, 045, 046, 047, 048, // 2
|
|
256, 049, 050, 060, 085, 257, 092, 063, 027, 028, // 3
|
|
029, 055, 076, 077, 056, NaN, 030, 031, 032, 057, // 4
|
|
NaN, 058, 059, 061, 444, NaN, NaN, 216, 445, 446, // 5
|
|
NaN, 447, 051, 038, 039, 040, 478, 464, 456, 484, // 6
|
|
NaN, 482, 033, 217, 151, NaN, 237, 244, 149, 153, // 7
|
|
152, 245, 221, 156, 150, 485, 086, 087, 222, 487, // 8
|
|
NaN, 223, 486, 488, 224, 243, 248, 490, 241, 491, // 9
|
|
NaN, 489, 240, 473, NaN, 259, 228, 246, 242, 157, // 10
|
|
088, 089, 229, 247, 504, NaN, NaN, 239, 258, 230, // 11
|
|
NaN, 034, 035, 036, 037, 238, 231, 475, 481, NaN, // 12
|
|
NaN, 090, 091, 476, 480, NaN, NaN, NaN, 249, 043, // 13
|
|
232, NaN, NaN, 233, 250, NaN, 234, NaN, NaN, NaN, // 14
|
|
154, 235, NaN, NaN, NaN, NaN, 044, 495, NaN, 493, // 15
|
|
NaN, 492, NaN, 236, 497, 498, 496, NaN, NaN, 080, // 16
|
|
NaN, NaN, 252, 155, 158, 477, NaN, 500, 483, NaN, // 17
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, // 18
|
|
NaN, 328, 329, 330, 331, 331, 332, 333, 334, 335, // 19
|
|
336, 337, 338, 339, 340, 341, 342, 343, 344, 345, // 20
|
|
346, 347, 348, 349, 350, 351, 352, 353, 354, 355, // 21
|
|
355, 356, 357, 358, 359, 360, 361, 362, 363, 364, // 22
|
|
365, 366, 367, 368, 369, 370, 371, 372, 373, 374, // 23
|
|
375, 376, 377, 420, 421, 422, 423, 424, 425, 426, // 24
|
|
427, NaN, NaN, NaN, NaN, NaN,
|
|
};
|
|
|
|
/// <summary> Gen3 items (index) and their corresponding Gen4 item ID (value) </summary>
|
|
private static readonly ushort[] arr3 =
|
|
{
|
|
000, 001, 002, 003, 004, 005, 006, 007, 008, 009,
|
|
010, 011, 012, 017, 018, 019, 020, 021, 022, 023,
|
|
024, 025, 026, 027, 028, 029, 030, 031, 032, 033,
|
|
034, 035, 036, 037, 038, 039, 040, 041, 042, 065,
|
|
066, 067, 068, 069, 043, 044, 070, 071, 072, 073,
|
|
074, 075, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, 045, 046, 047, 048, 049, 050, 051,
|
|
052, 053, NaN, 055, 056, 057, 058, 059, 060, 061,
|
|
063, 064, NaN, 076, 077, 078, 079, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, 080, 081, 082, 083, 084, 085, NaN,
|
|
NaN, NaN, NaN, 086, 087, NaN, 088, 089, 090, 091,
|
|
092, 093, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, 149, 150, 151, 152, 153, 154, 155,
|
|
156, 157, 158, 159, 160, 161, 162, 163, 164, 165,
|
|
166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
|
|
176, 177, 178, 179, 180, 181, 182, 183, 201, 202,
|
|
203, 204, 205, 206, 207, 208, NaN, NaN, NaN, 213,
|
|
214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
|
|
224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
|
|
234, 235, 236, 237, 238, 239, 240, 241, 242, 243,
|
|
244, 245, 246, 247, 248, 249, 250, 251, 252, 253,
|
|
254, 255, 256, 257, 258, 259, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, 260, 261, 262, 263, 264,
|
|
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN,
|
|
328, 329, 330, 331, 332, 333, 334, 335, 336, 337,
|
|
338, 339, 340, 341, 342, 343, 344, 345, 346, 347,
|
|
348, 349, 350, 351, 352, 353, 354, 355, 356, 357,
|
|
358, 359, 360, 361, 362, 363, 364, 365, 366, 367,
|
|
368, 369, 370, 371, 372, 373, 374, 375, 376, 377,
|
|
};
|
|
#endregion
|
|
|
|
/// <summary>
|
|
/// Converts a Generation 1 (Teru-sama) Item ID to Generation 2 Item ID.
|
|
/// </summary>
|
|
/// <param name="value">Gen1 Item ID</param>
|
|
/// <returns>Gen2 Item ID</returns>
|
|
/// <remarks>https://github.com/pret/pokecrystal/blob/edb624c20ceb50eef9d73a5df0ac041cc156dd32/engine/link/link.asm#L1093-L1115</remarks>
|
|
private static int GetTeruSamaItem(int value)
|
|
{
|
|
switch (value)
|
|
{
|
|
case 0x19: return 0x92; // Leftovers
|
|
case 0x2D: return 0x53; // Bitter Berry
|
|
case 0x32: return 0xAE; // Leftovers
|
|
|
|
case 0x5A:
|
|
case 0x64:
|
|
case 0x78:
|
|
case 0x87:
|
|
case 0xBE:
|
|
case 0xC3:
|
|
case 0xDC:
|
|
case 0xFA:
|
|
case 0xFF:
|
|
return 0xAD; // Berry
|
|
|
|
default: return value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a Gen1 Item to Gen2 Item.
|
|
/// </summary>
|
|
/// <param name="value">Gen1 Item</param>
|
|
/// <returns>Gen2 Item</returns>
|
|
internal static int GetItemFuture1(int value)
|
|
{
|
|
if (!IsItemTransferable12((ushort) value))
|
|
return GetTeruSamaItem(value);
|
|
return value;
|
|
}
|
|
|
|
private static bool IsItemTransferable12(ushort item) => ((IList<ushort>) Legal.HeldItems_GSC).Contains(item);
|
|
|
|
/// <summary>
|
|
/// Gets a format specific <see cref="PKM.HeldItem"/> value depending on the desired format and the provided item index & origin format.
|
|
/// </summary>
|
|
/// <param name="srcItem">Held Item to apply</param>
|
|
/// <param name="srcFormat">Format from importing</param>
|
|
/// <param name="destFormat">Format required for holder</param>
|
|
/// <returns>destItem</returns>
|
|
internal static int GetItemForFormat(int srcItem, int srcFormat, int destFormat)
|
|
{
|
|
if (srcItem <= 0)
|
|
return 0;
|
|
|
|
if (destFormat == srcFormat)
|
|
return srcItem;
|
|
|
|
if (destFormat != srcFormat && srcFormat <= 3) // past gen items
|
|
{
|
|
if (destFormat > 3) // try remapping
|
|
return srcFormat == 2 ? GetItemFuture2((byte)srcItem) : GetItemFuture3((ushort)srcItem);
|
|
|
|
if (destFormat > srcFormat) // can't set past gen items
|
|
return 0;
|
|
|
|
// ShowdownSet checks gen3 then gen2. For gen2 collisions (if any?) remap 3->4->2.
|
|
srcItem = GetItemFuture3((ushort)srcItem);
|
|
srcItem = GetItemOld2((ushort)srcItem);
|
|
if (srcItem <= 0)
|
|
return 0;
|
|
}
|
|
|
|
return destFormat switch
|
|
{
|
|
1 => 0,
|
|
2 => (byte) srcItem,
|
|
3 => GetItemOld3((ushort) srcItem),
|
|
_ => srcItem
|
|
};
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if an item ID is an HM
|
|
/// </summary>
|
|
/// <param name="item">Item ID</param>
|
|
/// <param name="generation">Generation the <see cref="item"/> exists in</param>
|
|
/// <returns>True if is an HM</returns>
|
|
internal static bool IsItemHM(ushort item, int generation)
|
|
{
|
|
return generation switch
|
|
{
|
|
1 => (196 <= item && item <= 200), // HMs
|
|
2 => (item >= 243), // HMs
|
|
3 => (339 <= item && item <= 346),
|
|
_ => ((420 <= item && item <= 427) || item == 737)
|
|
};
|
|
}
|
|
}
|
|
}
|