Multi Array + Collision

[dead_bot13]

I am making this maze game as a uni project, unforgivable I am a bit lost when it come to actionscript 3.

i have attached a picture of the game.

What i am trying to figure out is how do I get the koala to detect when it touches the TNT or the Exit MCs ?

here is my code.

//{ region === initialisation

const MAP_WIDTH = 16
const MAP_HEIGHT = 11
const TILE_WIDTH = 40
restart_btn.visible = false;
rescued_mc.visible = false;
var map:Array = [
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 
[1, 5, 6, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 6, 0, 1], 
[1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1], 
[1, 5, 1, 0, 1, 7, 0, 0, 0, 6, 0, 1, 0, 1, 0, 1], 
[1, 0, 1, 0, 1, 6, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1], 
[1, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1], 
[1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1], 
[1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1], 
[1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
]

var LEFT, RIGHT, UP, DOWN:Boolean = false;
var koalas:Array = new Array()
var TNTs:Array = new Array()



var displayMap:Array = new Array();

for (var row = 0; row < MAP_HEIGHT; row++){
	displayMap[row] = new Array();
	for (var col = 0; col < MAP_WIDTH; col++){
		var tile:Tile = new Tile();
		displayMap[row][col] = tile;
		tile.x = TILE_WIDTH / 2 + (col) * TILE_WIDTH;
		tile.y = TILE_WIDTH / 2 + (row + 1) * TILE_WIDTH;
		tile.visible = false;
		addChild(tile);
		tile.gotoAndStop(1);
		switch (map[row][col]){
			case 1: 
				tile.gotoAndStop(2);
			break;
			case 5: 
				var myKoala_mc:Koala = new Koala();
				addChild(myKoala_mc);
				myKoala_mc.addEventListener(Event.ENTER_FRAME, moveKoala);
				myKoala_mc.x = TILE_WIDTH / 2 + (col) * TILE_WIDTH;
				myKoala_mc.y = TILE_WIDTH / 2 + (row + 1) * TILE_WIDTH;
				myKoala_mc.visible = false;
				myKoala_mc.row = row;
				myKoala_mc.col = col;
				koalas.push(myKoala_mc)
			break;
			case 6:
			var TNT_mc:TNT = new TNT();
				addChild(TNT_mc);
				TNT_mc.x = TILE_WIDTH / 2 + (col) * TILE_WIDTH;
				TNT_mc.y = TILE_WIDTH / 2 + (row + 1) * TILE_WIDTH;
				TNT_mc.visible = false;
				TNT_mc.row = row;
				TNT_mc.col = col;
				TNTs.push(TNT_mc)
			break;
			case 7:
			var exit_one:exit1 = new exit1();
				addChild(exit_one);
				exit_one.x = TILE_WIDTH / 2 + (col) * TILE_WIDTH;
				exit_one.y = TILE_WIDTH / 2 + (row + 1) * TILE_WIDTH;
				exit_one.visible = false;
				exit_one.row = row;
				exit_one.col = col;
			break;
		}
	}
}
setChildIndex(myKoala_mc, numChildren - 1);
//} endregion initialisation ====
// other listeners==================
splash_mc.start_btn.addEventListener(MouseEvent.CLICK, startGame);
restart_btn.addEventListener(MouseEvent.CLICK, reStartGame);
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);

// Event Handlers===================
function startGame(m:MouseEvent){
	splash_mc.visible = false;
	for (var row = 0; row < MAP_HEIGHT; row++){
		for (var col = 0; col < MAP_WIDTH; col++){
			displayMap[row][col].visible = true;
		}
	}
	
	for each (var bear in koalas) {
		bear.visible = true;
			for each (var deer in TNTs) {
				deer.visible = true;
			}
	}
	restart_btn.visible = true;
	exit_one.visible = true;
	rescued_mc.visible = true;
}


function reStartGame(m:MouseEvent){
	splash_mc.visible = true;
	for (var row = 0; row < MAP_HEIGHT; row++){
		for (var col = 0; col < MAP_WIDTH; col++){
			displayMap[row][col].visible = false;
		}
	}
	for each (var bear in koalas) {
		bear.visible = false;
			for each (var deer in TNTs) {
				deer.visible = false;
			}
	}
	myKoala_mc.visible = false;
	restart_btn.visible = false;
	TNT_mc.visible = false;
	exit_one.visible = false;
	rescued_mc.visible = false;
}

//{ region moving koala
const DIR_RIGHT = 1;
const DIR_LEFT = -1;
const DIR_UP = -1;
const DIR_DOWN = 1;

function moveKoala(evt:Event){
	var temp = evt.currentTarget as Koala;
	with (temp){
		if (LEFT && canMoveX(temp, DIR_LEFT)){
			moveX(temp, DIR_LEFT);
		} else if (RIGHT && canMoveX(temp, DIR_RIGHT)){
			moveX(temp, DIR_RIGHT);
		} else if (UP && canMoveY(temp, DIR_UP)){
			moveY(temp, DIR_UP);
		} else if (DOWN && canMoveY(temp, DIR_DOWN)){
			moveY(temp, DIR_DOWN);
		} else {
			gotoAndStop("stand");
		}
	}
}

function canMoveX(aKoala, aDirection):Boolean {
	
	var canMove:Boolean;
	
	if (map[aKoala.row][aKoala.col + aDirection] == 6 || map[aKoala.row][aKoala.col + aDirection] == 7|| map[aKoala.row][aKoala.col + aDirection] == 0)
  {
    return true;
  }
  	else return false;
}

function moveX(aKoala, aDirection){
	with (aKoala){
		if (aDirection == DIR_LEFT) gotoAndStop("left");
		else gotoAndStop("right");
		map[row][col] = 0;
		displayMap[row][col].gotoAndStop(1);
		col = col +aDirection;
		map[row][col] = 5;
		x = (col + 0.5) * TILE_WIDTH;
	}
}

function canMoveY(aKoala, aDirection):Boolean {
	
	var canMove:Boolean;
	
	if (map[aKoala.row + aDirection][aKoala.col ] == 6 || map[aKoala.row + aDirection][aKoala.col ] == 7 || map[aKoala.row+ aDirection][aKoala.col ] == 0)
  {
    return true;
  }
  	else return false;
}

function moveY(aKoala, aDirection){
	with (aKoala){
		if (aDirection == DIR_UP) gotoAndStop("up");
		else gotoAndStop("down");
		map[row][col] = 0;
		displayMap[row][col].gotoAndStop(1);
		row = row + aDirection;
		map[row][col] = 5;
		y = (row + 1.5) * TILE_WIDTH;
	}
}

//} endregion

function keyDownHandler(k:KeyboardEvent){
	var key = k.keyCode;
	switch (key){
		case Keyboard.LEFT: 
			LEFT = true;
			break;
		case Keyboard.RIGHT: 
			RIGHT = true;
			break;
		case Keyboard.UP: 
			UP = true;
			break;
		case Keyboard.DOWN: 
			DOWN = true;
			break;
	}
}

function keyUpHandler(k:KeyboardEvent){
	var key = k.keyCode;
	switch (key){
		case Keyboard.LEFT: 
			LEFT = false;
			break;
		case Keyboard.RIGHT: 
			RIGHT = false;
			break;
		case Keyboard.UP: 
			UP = false;
			break;
		case Keyboard.DOWN: 
			DOWN = false;
			break;
	}
}

Any help would be appreciated, thank you.