Hi. I have tried to update your code. It is definately some Wild-West code, and I have to emphasize, that this answer is not the proper way to do it 🙂
The main problem with your solution is, that you are using hittest on a clip that you want to be on. This hittest gives false, when you are out of the tile, and you then have a lot of trouble getting back in again.
The code I made was this:
import flash.display.DisplayObjectContainer;
import flash.display.MovieClip;
import flash.geom.Rectangle;
var rightArow:Boolean;
var leftArow:Boolean;
var upArow:Boolean;
var downArow:Boolean;
var speed:int = 5;
var road:Array = ["r1","r2","r3","r4","r5","r6","r7","r8","r9"];
stage.addEventListener(KeyboardEvent.KEY_DOWN, keypress);
stage.addEventListener(KeyboardEvent.KEY_UP, keyrelease);
function keypress(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.RIGHT) rightArow = true;
if (event.keyCode == Keyboard.LEFT) leftArow = true;
if (event.keyCode == Keyboard.UP) upArow = true;
if (event.keyCode == Keyboard.DOWN) downArow = true;
updatePos();
}
function keyrelease(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.RIGHT) rightArow = false;
if (event.keyCode == Keyboard.LEFT) leftArow = false;
if (event.keyCode == Keyboard.UP) upArow = false;
if (event.keyCode == Keyboard.DOWN) downArow = false;
}
function isInside(element:*, index:int, arr:Array):Boolean
{
var plyrPos:Rectangle = plyr2.getBounds(stage);
var base:DisplayObjectContainer = stage.getChildAt(0) as MovieClip;
var tmpRect:Rectangle = MovieClip(getChildByName(element)).getBounds(stage);
if(tmpRect.containsRect(plyrPos))
{
return true;
}
return false;
}
function updatePos():void
{
if (rightArow)
{
plyr2.x += speed;
if(!road.some(isInside))
while(!road.some(isInside))
plyr2.x -= 1;
}
if (leftArow)
{
plyr2.x -= speed;
if(!road.some(isInside))
while(!road.some(isInside))
plyr2.x += 1;
}
if (upArow)
{
plyr2.y -= speed;
if(!road.some(isInside))
while(!road.some(isInside))
plyr2.y += 1;
}
if (downArow)
{
plyr2.y += speed;
if(!road.some(isInside))
while(!road.some(isInside))
plyr2.y -= 1;
}
}
I placed all your movie clips inside an array, so I could use the Array.some() method. It uses a function on the array, and keeps iterating until it reaches a true in return. You can read about it at http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/Array.html#some()
In the function isInside() I make two rectangles, and test for their bounds. The Rectangle class has a ot of useful methods like Rectangle.containsRect() that test to see if a rectangle object is fully contained inside another object. Read about it at http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/geom/Rectangle.html
The last thing I can mention is that I made a cosmetic while loop, that subtracts 1 pixel from your player, so the rectangle fit perfectly to the edge of the squares. Because of different sizes, you may end up with a player that can't go all the way to the edge.
Please note, that this method calculate on rectangles, so if you have very odd-shaped elements you may look for other solutions.
I have made a working solution that you can see at:
http://eksempler.hjaelpmignu.dk/wwwhelp/flash/road.html
You can get the fla-file at:
http://eksempler.hjaelpmignu.dk/wwwhelp/flash/road.fla
Good luck
/ockley
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