Lookup Tables - Roll20 API

lookup.js

var tables = {
    critical_hits : [
        "stubbed a toe",   //1
        "broke a finger",  //2
        "lost a limb",     //3
        "decapitated"      //4
    ],
    
    flavor_text : [
        "in a turn of luck",
        "with great flourish",
        "displaying overwhelming force",
        "with a skilled hand",
    ]
}

// usage: !lookup <tablename> <index>
on('chat:message', function (msg){

    // confirm this is an API call and contains the !lookup keyword
    if(msg.type == "api" && msg.content.indexOf('!lookup') !== -1){

        // if anything goes wrong, display an error message and don't crash
        try {

            // split the message on spaces
            lookup = msg.content.split(' ');
            
            // get the table to look into
            table = lookup[1];
            
            // get the index of the table, subtract 1 to account for 0-based arrays
            index = parseInt(lookup[2]) - 1;
            
            // send message with the looked up value
            sendChat(msg.who, tables[table][index]);
        
        } catch (err) {
        
            // send the error message
            sendChat(msg.who, 'Bad table lookup');
        }
    }
});