Question

This is for a gameing application
I declare the variable skipnpc which is designed as an indicator that a non player character has used his turn and any AI code related to his behavior is skipped for a period of time. the problem I have is I am loosing the value of skipnpc somehow I indicated where in the console.log commands I issue is related to varaible scope but I don’t understand how to fix it.

function npcMovement() {
    skipnpc = false;...
    sql4 = "SELECT id FROM game_moblist WHERE spawn_id =" + spawnid + " AND posx=" + parseInt(mobpathx[mobpathx.length - 1]) + " AND posy=" + parseInt(mobpathy[mobpathy.length - 1])
    connection.query(sql4, function (err, send, fields) {
        console.log("skipnpc pathing")
        io.sockets.emit('groupmoveresult', send, parseInt(mobpathx[mobpathx.length - 1]), parseInt(mobpathy[mobpathy.length - 1]))
        skipnpc = true
        console.log("skipnpc=true:" + skipnpc)
    });
    console.log("skipnpc = false:" + skipnpc)

Later I use

if (skipnpc==false){
  ...

before any further AI code is attempted

Answer 1

connection.query is executed asynchronous. Thus you get to your final line here before it is done.