update interface to use ISave methods

parser.go

@@ -13,7 +13,7 @@ func Parse(savefile []byte) ([]rom_reader.Pokemon, error) {
 		return []rom_reader.Pokemon{}, err
 	}
 
-	partyData := rom_reader.GetPartyPokemon(game.GetPartySection(), game.GetPartySize())
+	partyData := rom_reader.GetPartyPokemon(game)
 	return partyData, nil
 }
 
@@ -23,6 +23,5 @@ func Write(savefile []byte, newBytes []req.WriteRequest) ([]byte, error) {
 		return []byte{}, err
 	}
 
-	chunk := game.GetLatestData()
-	return rom_writer.UpdatePartyPokemon(savefile, *chunk, newBytes)
+	return rom_writer.UpdatePartyPokemon(game, newBytes)
 }

rom_reader/rom_reader.go

@@ -9,6 +9,7 @@ import (
 	"github.com/dingdongg/pkmn-rom-parser/v7/consts"
 	"github.com/dingdongg/pkmn-rom-parser/v7/crypt"
 	"github.com/dingdongg/pkmn-rom-parser/v7/data"
+	"github.com/dingdongg/pkmn-rom-parser/v7/sav"
 	"github.com/dingdongg/pkmn-rom-parser/v7/shuffler"
 )
 
@@ -58,7 +59,9 @@ const (
 )
 
 // TODO: update function to use ISave methods instead
-func GetPartyPokemon(ciphertext []byte, size uint32) []Pokemon {
+func GetPartyPokemon(game sav.ISave) []Pokemon {
+	size := game.PartySize()
+	ciphertext := game.PartySection()
 	var party []Pokemon
 
 	for i := uint(0); i < uint(size); i++ {