MemoryBankData.cs

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using System.Text;
using Engine;
 
namespace Game {
    public class MemoryBankData : IEditableItemData {
        public static List<char> m_hexChars = [
            '0',
            '1',
            '2',
            '3',
            '4',
            '5',
            '6',
            '7',
            '8',
            '9',
            'A',
            'B',
            'C',
            'D',
            'E',
            'F'
        ];
 
        public DynamicArray<byte> Data = [];
 
        public byte LastOutput { get; set; }
 
        public byte Read(int address) {
            if (address >= 0
                && address < Data.Count) {
                return Data.Array[address];
            }
            return 0;
        }
 
        public void Write(int address, byte data) {
            if (address >= 0
                && address < Data.Count) {
                Data.Array[address] = data;
            }
            else if (address >= 0
                && address < 256
                && data != 0) {
                Data.Count = MathUtils.Max(Data.Count, address + 1);
                Data.Array[address] = data;
            }
        }
 
        public IEditableItemData Copy() => new MemoryBankData { Data = new DynamicArray<byte>(Data), LastOutput = LastOutput };
 
        public void LoadString(string data) {
            string[] array = data.Split([';'], StringSplitOptions.RemoveEmptyEntries);
            if (array.Length >= 1) {
                string text = array[0];
                text = text.TrimEnd('0');
                Data.Clear();
                for (int i = 0; i < MathUtils.Min(text.Length, 256); i++) {
                    int num = m_hexChars.IndexOf(char.ToUpperInvariant(text[i]));
                    if (num < 0) {
                        num = 0;
                    }
                    Data.Add((byte)num);
                }
            }
            if (array.Length >= 2) {
                string text2 = array[1];
                int num2 = m_hexChars.IndexOf(char.ToUpperInvariant(text2[0]));
                if (num2 < 0) {
                    num2 = 0;
                }
                LastOutput = (byte)num2;
            }
        }
 
        public string SaveString() => SaveString(true);
 
        public string SaveString(bool saveLastOutput) {
            StringBuilder stringBuilder = new();
            int num = 0;
            for (int i = 0; i < Data.Count; i++) {
                if (Data.Array[i] != 0) {
                    num = i + 1;
                }
            }
            for (int j = 0; j < num; j++) {
                int index = Math.Clamp((int)Data.Array[j], 0, 15);
                stringBuilder.Append(m_hexChars[index]);
            }
            if (saveLastOutput) {
                stringBuilder.Append(';');
                stringBuilder.Append(m_hexChars[Math.Clamp((int)LastOutput, 0, 15)]);
            }
            return stringBuilder.ToString();
        }
    }
}