Moving MovieClip around with arrow keys.

// Init imports, vars etc.

import flash.display.MovieClip;
import flash.events.FocusEvent;
import flash.events.KeyboardEvent;

// Spaceshit
var ship:MovieClip = new spaceship();
                                    // U   D   L   R
var shippositioning:Array = new Array("0","0","0","0");


ship.x = 50;
ship.y = 50;

stage.addEventListener(Event.ENTER_FRAME, shipcontrols_handler)
stage.addEventListener(KeyboardEvent.KEY_DOWN, keycheckdown);
stage.addEventListener(KeyboardEvent.KEY_UP, keycheckup);

stage.addChild(ship);


// Functions

function shipcontrols_handler(e:Event) {
    if (shippositioning[0] == 1) {
        ship.y-= 5;
    }
    if (shippositioning[1] == 1) {
        ship.y+= 5;
    }
    if (shippositioning[2] == 1) {
        ship.x-= 5;
    }
    if (shippositioning[3] == 1) {
        ship.x+= 5;
    }
}

function keycheckdown(event:KeyboardEvent) {
    trace (event.keyCode);
    switch (event.keyCode) {

        // Up
        case 38: {
            shippositioning[0] = 1;
            break;
        }
        // Down
        case 40: {
            shippositioning[1] = 1;
            break;
        }
        // Left
        case 37: {
            shippositioning[2] = 1;
            break;
        }
        // Right
        case 39: {
            shippositioning[3] = 1;
            break;
        }
    }
}
function keycheckup(event:KeyboardEvent) {
    trace (event.keyCode);
    switch (event.keyCode) {

        // Up
        case 38: {
            shippositioning[0] = 0;
            break;
        }
        // Down
        case 40: {
            shippositioning[1] = 0;
            break;
        }
        // Left
        case 37: {
            shippositioning[2] = 0;
            break;
        }
        // Right
        case 39: {
            shippositioning[3] = 0;
            break;
        }
    }
}