using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class InputManager : Singleton<InputManager>
{
	private List<Command> m_CommandRecord;
	private readonly int kCommandRecords = 10;

	// 本帧内的指令，会在下一帧被清空
	private Command m_CurrentCommand;
	public Command CurrentCommand
	{
		get
		{
			return m_CurrentCommand;
		}
	}

	public void Init()
	{
		m_CommandRecord = new List<Command>();
		m_CurrentCommand = new Command(CommandCode.Blank, 0);
	}

	public void Update()
	{
		CommandCode cmd = CommandCode.Blank;
		// 移动
		if (Input.GetKeyDown("w"))
			cmd = CommandCode.Up;
		if (Input.GetKeyDown("s"))
			cmd = CommandCode.Down;
		if (Input.GetKeyDown("a"))
			cmd = CommandCode.Left;
		if (Input.GetKeyDown("d"))
			cmd = CommandCode.Right;
		// 动作
		if (Input.GetKeyDown("j"))
			cmd = CommandCode.Circle;
		if (Input.GetKeyDown("k"))
			cmd = CommandCode.Triangle;
		if (Input.GetKeyDown("l"))
			cmd = CommandCode.Square;
		if(Input.GetKeyDown("u"))
			cmd = CommandCode.Cross;

		if(cmd != CommandCode.Blank)
		{
			float time = Time.time;
			Command command = new Command(cmd, time);
			Debug.Log(CommandToString(command));

			m_CurrentCommand = command;
			m_CommandRecord.Add(command);

			if(m_CommandRecord.Count > 10)
				m_CommandRecord.RemoveRange(0, m_CommandRecord.Count - 10);
		}
		else if(m_CurrentCommand.code != CommandCode.Blank)
		{
			m_CurrentCommand = Command.Blank;
		}
	}

	string CommandCodeToString(CommandCode cmd)
	{
		switch(cmd)
		{
			case CommandCode.Left: return "←";
			case CommandCode.Right: return "→";
			case CommandCode.Up: return "↑";
			case CommandCode.Down: return "↓";
			case CommandCode.Circle: return "○";
			case CommandCode.Triangle: return "△";
			case CommandCode.Square: return "□";
			case CommandCode.Cross: return "×";
			default: return "Unknown";
		}
	}

	string CommandToString(Command cmd)
	{
		string sign = CommandCodeToString(cmd.code);
		return sign + "      " + cmd.time + "s" + "      " + cmd.id;
	}

}