/// <summary>
/// Gets or sets a scripting variable.
/// </summary>
/// <remarks>
/// Scripting variables are separate from Lua variables and exist
/// across script and playing sessions. How the variable is saved
/// depends on the used prefix.
///
/// Variable names may contain the following characters, apart from
/// the prefixes, and must start with a character:
/// abcdefghijklmnopqrstuvwxyz0123456789_
///
/// Prefixes:
/// "" - Permanent variable attached to the character.
/// "@" - Temporary variable attached to the character.
/// "#" - Permanent variable attached to the account.
/// "$" - Permanent global variable.
/// "$@" - Temporary global variable.
///
/// Parameters:
/// - string variableName
/// - (optional) T value
///
/// Result:
/// - T value
/// </remarks>
/// <param name="L"></param>
/// <returns></returns>
private int var(IntPtr L)
{
var conn = this.GetConnectionFromState(L);
var character = conn.SelectedCharacter;
// Get parameters
var argc = Melua.lua_gettop(L);
var name = Melua.luaL_checkstring(L, 1).Trim();
object value = null;
if (argc == 2)
{
if (Melua.lua_isnumber(L, 2))
{
value = Melua.lua_tonumber(L, 2);
}
else if (Melua.lua_isstring(L, 2))
{
value = Melua.lua_tostring(L, 2);
}
else if (Melua.lua_isboolean(L, 2))
{
value = Melua.lua_toboolean(L, 2);
}
else
{
return(Melua.melua_error(L, "Unsupported variable type."));
}
}
Melua.lua_pop(L, argc);
// Get variable manager and trim name
VariableManager vars;
if (name.StartsWith("$@"))
{
vars = this.Variables.Temp;
name = name.Substring(2);
}
else if (name.StartsWith("$"))
{
vars = this.Variables.Perm;
name = name.Substring(1);
}
else if (name.StartsWith("#"))
{
vars = conn.Account.Variables.Perm;
name = name.Substring(1);
}
else if (name.StartsWith("@"))
{
vars = character.Variables.Temp;
name = name.Substring(1);
}
else
{
vars = character.Variables.Perm;
}
// Check name syntax, if we want to add more prefixes later on,
// we can't have special characters in names.
if (!VarNameCheck.IsMatch(name))
{
return(Melua.melua_error(L, "Invalid variable name."));
}
// Update or get value
if (value == null)
{
value = vars[name];
}
else
{
vars[name] = value;
}
// Push return value
if (value == null)
{
Melua.lua_pushnil(L);
}
else if (value is string)
{
Melua.lua_pushstring(L, (string)value);
}
else if (value is double)
{
Melua.lua_pushnumber(L, (double)value);
}
else if (value is float)
{
Melua.lua_pushnumber(L, (float)value);
}
else if (value is int)
{
Melua.lua_pushinteger(L, (int)value);
}
else if (value is bool)
{
Melua.lua_pushboolean(L, (bool)value);
}
else
{
return(Melua.melua_error(L, "Unsupported variable type '{0}'.", value.GetType().Name));
}
return(1);
}