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using System ;
using System.Collections.Generic ;
using System.Linq ;
using static PKHeX . Core . LegalityCheckStrings ;
using static PKHeX . Core . LegalityAnalysis ;
namespace PKHeX.Core
{
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/// <summary>
/// Logic to verify the current <see cref="PKM.RelearnMoves"/>.
/// </summary>
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public static class VerifyRelearnMoves
{
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public static CheckResult [ ] VerifyRelearn ( PKM pkm , LegalInfo info )
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{
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if ( info . Generation < 6 | | pkm . VC1 )
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return VerifyRelearnNone ( pkm , info ) ;
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if ( info . EncounterMatch is EncounterLink l )
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return VerifyRelearnSpecifiedMoveset ( pkm , info , l . RelearnMoves ) ;
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if ( info . EncounterMatch is MysteryGift g )
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return VerifyRelearnSpecifiedMoveset ( pkm , info , g . RelearnMoves ) ;
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if ( info . EncounterMatch is EncounterStatic s )
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return VerifyRelearnSpecifiedMoveset ( pkm , info , s . Relearn ) ;
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if ( info . EncounterMatch is EncounterEgg e )
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return VerifyRelearnEggBase ( pkm , info , e ) ;
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if ( pkm . RelearnMove1 ! = 0 & & info . EncounterMatch is EncounterSlot z & & z . Permissions . DexNav & & EncounterGenerator . IsDexNavValid ( pkm ) )
return VerifyRelearnDexNav ( pkm , info ) ;
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return VerifyRelearnNone ( pkm , info ) ;
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}
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private static CheckResult [ ] VerifyRelearnSpecifiedMoveset ( PKM pkm , LegalInfo info , int [ ] moves )
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{
CheckResult [ ] res = new CheckResult [ 4 ] ;
int [ ] RelearnMoves = pkm . RelearnMoves ;
// Get gifts that match
for ( int i = 0 ; i < 4 ; i + + )
res [ i ] = moves [ i ] ! = RelearnMoves [ i ]
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? new CheckResult ( Severity . Invalid , string . Format ( V178 , MoveStrings [ moves [ i ] ] ) , CheckIdentifier . RelearnMove )
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: new CheckResult ( CheckIdentifier . RelearnMove ) ;
info . RelearnBase = moves ;
return res ;
}
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private static CheckResult [ ] VerifyRelearnDexNav ( PKM pkm , LegalInfo info )
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{
CheckResult [ ] res = new CheckResult [ 4 ] ;
int [ ] RelearnMoves = pkm . RelearnMoves ;
// DexNav Pokémon can have 1 random egg move as a relearn move.
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res [ 0 ] = ! Legal . GetValidRelearn ( pkm , Legal . GetBaseEggSpecies ( pkm ) , true ) . Contains ( RelearnMoves [ 0 ] )
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? new CheckResult ( Severity . Invalid , V183 , CheckIdentifier . RelearnMove )
: new CheckResult ( CheckIdentifier . RelearnMove ) ;
// All other relearn moves must be empty.
for ( int i = 1 ; i < 4 ; i + + )
res [ i ] = RelearnMoves [ i ] ! = 0
? new CheckResult ( Severity . Invalid , V184 , CheckIdentifier . RelearnMove )
: new CheckResult ( CheckIdentifier . RelearnMove ) ;
// Update the relearn base moves if the first relearn move is okay.
info . RelearnBase = res [ 0 ] . Valid
? RelearnMoves
: new int [ 4 ] ;
return res ;
}
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private static CheckResult [ ] VerifyRelearnNone ( PKM pkm , LegalInfo info )
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{
CheckResult [ ] res = new CheckResult [ 4 ] ;
int [ ] RelearnMoves = pkm . RelearnMoves ;
// No relearn moves should be present.
for ( int i = 0 ; i < 4 ; i + + )
res [ i ] = RelearnMoves [ i ] ! = 0
? new CheckResult ( Severity . Invalid , V184 , CheckIdentifier . RelearnMove )
: new CheckResult ( CheckIdentifier . RelearnMove ) ;
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info . RelearnBase = new int [ 4 ] ;
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return res ;
}
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private static CheckResult [ ] VerifyRelearnEggBase ( PKM pkm , LegalInfo info , EncounterEgg e )
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{
int [ ] RelearnMoves = pkm . RelearnMoves ;
CheckResult [ ] res = new CheckResult [ 4 ] ;
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// Level up moves cannot be inherited if Ditto is the parent
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// that means genderless species and male only species except Nidoran and Volbet (they breed with female nidoran and illumise) could not have level up moves as an egg
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bool inheritLvlMoves = Legal . GetCanInheritMoves ( pkm , e ) ;
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// Obtain level1 moves
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var baseMoves = Legal . GetBaseEggMoves ( pkm , e . Species , e . Game , 1 ) ;
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int baseCt = Math . Min ( 4 , baseMoves . Length ) ;
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// Obtain Inherited moves
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var inheritMoves = Legal . GetValidRelearn ( pkm , e . Species , inheritLvlMoves , e . Game ) . ToList ( ) ;
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int reqBase = GetRequiredBaseMoves ( RelearnMoves , baseMoves , baseCt , inheritMoves ) ;
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// Check if the required amount of Base Egg Moves are present.
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FlagBaseEggMoves ( res , reqBase , baseMoves , RelearnMoves ) ;
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// Non-Base moves that can magically appear in the regular movepool
if ( Legal . LightBall . Contains ( pkm . Species ) )
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inheritMoves . Add ( 344 ) ; // Volt Tackle
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// If any splitbreed moves are invalid, flag accordingly
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var splitMoves = e . SplitBreed ? Legal . GetValidRelearn ( pkm , Legal . GetBaseEggSpecies ( pkm ) , inheritLvlMoves , e . Game ) . ToList ( ) : new List < int > ( ) ;
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// Inherited moves appear after the required base moves.
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// If the pkm is capable of split-species breeding and any inherited move is from the other split scenario, flag accordingly.
bool splitInvalid = FlagInvalidInheritedMoves ( res , reqBase , e , RelearnMoves , inheritMoves , splitMoves ) ;
if ( splitInvalid )
FlagSplitbreedMoves ( res , reqBase , e , pkm ) ;
info . RelearnBase = baseMoves ;
return res ;
}
private static void FlagBaseEggMoves ( CheckResult [ ] res , int required , IReadOnlyList < int > baseMoves , IReadOnlyList < int > RelearnMoves )
{
for ( int i = 0 ; i < required ; i + + )
{
if ( ! baseMoves . Contains ( RelearnMoves [ i ] ) )
{
FlagRelearnMovesMissing ( res , required , baseMoves , i ) ;
return ;
}
res [ i ] = new CheckResult ( Severity . Valid , V179 , CheckIdentifier . RelearnMove ) ;
}
}
private static void FlagRelearnMovesMissing ( CheckResult [ ] res , int required , IReadOnlyList < int > baseMoves , int start )
{
for ( int z = start ; z < required ; z + + )
res [ z ] = new CheckResult ( Severity . Invalid , V180 , CheckIdentifier . RelearnMove ) ;
// provide the list of suggested base moves for the last required slot
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string em = string . Join ( ", " , getMoveNames ( baseMoves ) ) ;
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res [ required - 1 ] . Comment + = string . Format ( Environment . NewLine + V181 , em ) ;
}
private static bool FlagInvalidInheritedMoves ( CheckResult [ ] res , int required , EncounterEgg e , IReadOnlyList < int > RelearnMoves , IReadOnlyList < int > inheritMoves , IReadOnlyList < int > splitMoves )
{
bool splitInvalid = false ;
for ( int i = required ; i < 4 ; i + + )
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{
if ( RelearnMoves [ i ] = = 0 ) // empty
res [ i ] = new CheckResult ( Severity . Valid , V167 , CheckIdentifier . RelearnMove ) ;
else if ( inheritMoves . Contains ( RelearnMoves [ i ] ) ) // inherited
res [ i ] = new CheckResult ( Severity . Valid , V172 , CheckIdentifier . RelearnMove ) ;
else if ( e . SplitBreed & & splitMoves . Contains ( RelearnMoves [ i ] ) ) // inherited
splitInvalid = true ;
else // not inheritable, flag
res [ i ] = new CheckResult ( Severity . Invalid , V182 , CheckIdentifier . RelearnMove ) ;
}
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return splitInvalid ;
}
private static void FlagSplitbreedMoves ( CheckResult [ ] res , int required , EncounterEgg e , PKM pkm )
{
var splitSpecies = Legal . GetBaseEggSpecies ( pkm , e . SplitBreed ? 0 : 1 ) ;
for ( int i = required ; i < 4 ; i + + )
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{
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if ( res [ i ] ! = null )
continue ;
string message = string . Format ( V379 , SpeciesStrings [ splitSpecies ] , SpeciesStrings [ e . Species ] ) ;
res [ i ] = new CheckResult ( Severity . Invalid , message , CheckIdentifier . RelearnMove ) ;
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}
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}
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private static int GetRequiredBaseMoves ( int [ ] RelearnMoves , IReadOnlyList < int > baseMoves , int baseCt , IReadOnlyList < int > inheritMoves )
{
var inherited = RelearnMoves . Where ( m = > m ! = 0 & & ( ! baseMoves . Contains ( m ) | | inheritMoves . Contains ( m ) ) ) . ToList ( ) ;
int inheritCt = inherited . Count ;
// Get required amount of base moves
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int unique = baseMoves . Union ( inherited ) . Count ( ) ;
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int reqBase = inheritCt = = 4 | | baseCt + inheritCt > 4 ? 4 - inheritCt : baseCt ;
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if ( RelearnMoves . Count ( m = > m ! = 0 ) < Math . Min ( 4 , baseMoves . Count ) )
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reqBase = Math . Min ( 4 , unique ) ;
return reqBase ;
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}
}
}