Command processor

View foxtacles's changes to this article

This script uses OnPlayerChat and processes chat input given by players if the first character is a forward slash.

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Code cpp:

#include "vaultscript.h"
#include <cstdlib>
#include <cstring>
 
using namespace vaultmp;
 
State VAULTSCRIPT OnPlayerChat(ID player, RawString message) noexcept
{
	// it's a command if the first character is a /
	if (*message == '/')
	{
		// we can safely tokenize because we won't send the message
		std::vector<String> tokens;
		RawString cmd = std::strtok(message + 1, " ");
 
		// collecting tokens
		while (cmd)
		{
			tokens.emplace_back(cmd);
			cmd = std::strtok(nullptr, " ");
		}
 
		if (!tokens.empty())
		{
			// Player object
			Player pplayer(player);
 
			if (!tokens[0].compare("additem"))
			{
				// baseID given?
				if (tokens.size() > 1)
				{
					// get the hexadecimal baseID of the item
					Base item = static_cast<Base>(std::strtoul(tokens[1].c_str(), nullptr, 16));
					// give item to player with notification
					pplayer.AddItem(item, 1, 100.0, False);
				}
			}
			// more commands...
			else
			{
				// send error message
				std::strncpy(message, String("Unrecognized command: " + tokens[0]).c_str(), static_cast<size_t>(Index::MAX_CHAT_LENGTH));
				return True;
			}
		}
 
		return False;
	}
 
	return True;
}

Code c:

public OnPlayerChat(ID, message{})
{
	new str{MAX_CHAT_LENGTH};
	if(message{0} == '/' && strlen(message)>1)
	{
		new delim = strfind(message," "),
			params{MAX_MESSAGE_LENGTH},
			len = strlen(message);
		strmid(str,message,1,delim==-1?len:delim);
		if(delim>1) strmid(params,message,delim+1,len);
		if(!strcmp(str,"additem"))
		{
			AddItem(ID,strval(params),1,100.0,Bool:true);
			return 0;
		}
		strformat(str,sizeof(str),true,"SERVER: The command \"/%s\" does not exist",str);
		ChatMessage(ID,str);
		return 0;
	}
	return 1;
}