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[+] Slide code support & split multiple patches (#77)
* 功能拆分 将不同的功能分拆到不同文件 * Slide code notation support This is part of Maimai DX 2077 patch set. New MA2 commands: NMSSS, BRSSS, EXSSS, BXSSS, CNSSS
This commit is contained in:
Minepig
260
AquaMai/MaimaiDX2077/SlideCodeParser.cs
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260
AquaMai/MaimaiDX2077/SlideCodeParser.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Numerics;
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using MelonLoader;
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namespace AquaMai.MaimaiDX2077;
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public static class SlideCodeParser
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{
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public enum CommandType
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{
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Invalid = -1,
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NodeA = 0,
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NodeB = 1,
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NodeC = 2,
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OrbitCCW = 3,
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OrbitCW = 4,
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NodeEnd = 5
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}
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public struct Command(CommandType type, int value)
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{
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public CommandType Type = type;
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public int Value = value;
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public static bool IsSame(Command a, Command b)
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{
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return a.Type == b.Type && a.Value == b.Value;
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}
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}
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public static readonly char[] CommandChars =
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[
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'A', 'B', 'C', 'P', 'Q', 'K'
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];
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public static int TryParseDigit(char c)
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{
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if (c >= '0' && c <= '9') return c - '0';
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return -1;
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}
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public static List<Command> ParseCommands(string code)
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{
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if (!CommandChars.Contains(code[1]))
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{
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throw new ArgumentException($"the 2nd char should be a command");
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}
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if (code[code.Length - 2] != 'K')
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{
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throw new ArgumentException($"should end with 'K' command");
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}
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var commands = new List<Command>();
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var currentType = CommandType.NodeA;
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var value = TryParseDigit(code[0]);
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if (value < 0) throw new ArgumentException($"invalid char '{code[0]}'");
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commands.Add(new Command(currentType, value));
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for (var ptr = 1; ptr < code.Length; ptr++)
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{
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var ch = code[ptr];
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if (CommandChars.Contains(ch))
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{
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currentType = (CommandType) Array.IndexOf(CommandChars, ch);
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if (currentType == CommandType.NodeC)
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{
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commands.Add(new Command(CommandType.NodeC, 0));
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}
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}
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else
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{
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value = TryParseDigit(ch);
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if (value < 0) throw new ArgumentException($"invalid char '{ch}'");
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if (currentType == CommandType.NodeC)
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{
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throw new ArgumentException($"digit should not follow 'C'");
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}
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commands.Add(new Command(currentType, value));
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}
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}
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return commands;
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}
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public static Complex GetNodePosition(Command cmd)
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{
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switch (cmd.Type)
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{
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case CommandType.NodeA:
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case CommandType.NodeEnd:
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return MaiGeometry.PointGroupA(cmd.Value);
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case CommandType.NodeB:
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return MaiGeometry.PointGroupB(cmd.Value);
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case CommandType.NodeC:
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return MaiGeometry.Center();
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default:
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throw new ArgumentException($"invalid type for node: {cmd.Type}");
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}
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}
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public static void NodeToNode(SlidePathGenerator generator, Command last, Command current)
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{
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if (Command.IsSame(last, current)) return;
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generator.LineToPoint(GetNodePosition(current));
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}
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public static void NodeToOrbit(SlidePathGenerator generator, Command last, Command current)
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{
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var isCcw = (current.Type == CommandType.OrbitCCW);
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var node = GetNodePosition(last);
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var orbit = MaiGeometry.GetCircle(current.Value);
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var diff = node - orbit.Center;
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if (Math.Abs(diff.Magnitude - orbit.Radius) < 0.1)
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{
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if (last.Type == CommandType.NodeA && current.Value == 9)
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{
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generator.TrySetLastParseMarker(ParametricSlidePath.ParseMarker.ForceAlign);
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}
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return; // node on circle, do nothing
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}
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if (diff.Magnitude < orbit.Radius)
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throw new ArgumentException($"impossible: {last.Type}{last.Value} -> Orbit{current.Value}");
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generator.TangentToCircle(orbit, isCcw);
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}
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public static void OrbitToNode(SlidePathGenerator generator, Command last, Command current)
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{
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var isCcw = (last.Type == CommandType.OrbitCCW);
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var node = GetNodePosition(current);
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var orbit = MaiGeometry.GetCircle(last.Value);
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var diff = node - orbit.Center;
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if (Math.Abs(diff.Magnitude - orbit.Radius) < 0.1)
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{
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generator.ArcToAngle(orbit.Center, diff.Phase, isCcw, false);
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return;
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}
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if (diff.Magnitude < orbit.Radius)
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throw new ArgumentException($"impossible: Orbit{last.Value} -> {current.Type}{current.Value}");
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generator.ArcToTangentTowards(node, orbit.Center, isCcw);
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generator.LineToPoint(node);
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}
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public static void OrbitToOrbit(SlidePathGenerator generator, Command last, Command current)
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{
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if (current.Type != last.Type) throw new ArgumentException($"orbit type mismatch");
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var isCcw = (last.Type == CommandType.OrbitCCW);
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var lastOrbit = MaiGeometry.GetCircle(last.Value);
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var currentOrbit = MaiGeometry.GetCircle(current.Value);
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if (current.Value == last.Value)
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{
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generator.FullCircle(lastOrbit.Center, isCcw);
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return;
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}
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if (last.Value == 0 && current.Value == 9 || last.Value == 9 && current.Value == 0)
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throw new ArgumentException($"impossible: Orbit{last.Value} -> Orbit{current.Value}");
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if (current.Value == 9)
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{
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var data = MaiGeometry.TransferOutData(last.Value, isCcw);
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generator.ArcToAngle(lastOrbit.Center, data.Item2, isCcw, false);
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generator.ArcToAngle(data.Item1.Center, data.Item3, isCcw, false);
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generator.TrySetLastParseMarker(ParametricSlidePath.ParseMarker.SmoothAlign);
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return;
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}
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if (last.Value == 9)
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{
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var data = MaiGeometry.TransferOutData(current.Value, !isCcw);
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generator.ArcToAngle(lastOrbit.Center, data.Item3, isCcw, true);
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generator.ArcToAngle(data.Item1.Center, data.Item2, isCcw, false);
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return;
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}
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generator.ExternTangentTransfer(lastOrbit.Center, currentOrbit, isCcw);
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}
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public static ParametricSlidePath Parse(string code)
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{
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try
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{
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var commands = ParseCommands(code);
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var lastCmd = commands[0];
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// The first command is guarantee to be 'A'
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var generator = SlidePathGenerator.BeginAt(MaiGeometry.PointGroupA(lastCmd.Value));
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for (var i = 1; i < commands.Count; i++)
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{
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var cmd = commands[i];
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switch (cmd.Type)
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{
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case CommandType.NodeA:
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case CommandType.NodeB:
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case CommandType.NodeC:
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case CommandType.NodeEnd:
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switch (lastCmd.Type)
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{
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case CommandType.NodeA:
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case CommandType.NodeB:
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case CommandType.NodeC:
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NodeToNode(generator, lastCmd, cmd);
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break;
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case CommandType.OrbitCCW:
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case CommandType.OrbitCW:
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OrbitToNode(generator, lastCmd, cmd);
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break;
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case CommandType.NodeEnd:
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throw new ArgumentException($"'K' should be the last command");
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default:
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throw new ArgumentOutOfRangeException();
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}
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break;
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case CommandType.OrbitCCW:
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case CommandType.OrbitCW:
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switch (lastCmd.Type)
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{
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case CommandType.NodeA:
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case CommandType.NodeB:
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case CommandType.NodeC:
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NodeToOrbit(generator, lastCmd, cmd);
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break;
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case CommandType.OrbitCCW:
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case CommandType.OrbitCW:
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OrbitToOrbit(generator, lastCmd, cmd);
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break;
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case CommandType.NodeEnd:
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throw new ArgumentException($"'K' should be the last command");
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default:
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throw new ArgumentOutOfRangeException();
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}
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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lastCmd = cmd;
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}
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return generator.GeneratePath();
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}
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catch (ArgumentException e)
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{
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var msg = $"Invalid code: {code}";
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if (e.Message != "")
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{
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msg += $", {e.Message}";
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}
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MelonLogger.Error(msg);
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return null;
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}
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}
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}
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