Heres a snippet of my scrolling code from an onClipEvent placed on the main character.
PHP Code:
} else {
        if (!_root.bg.hitTest(_x-_global.barvar-(_width/2), _y-35, true) and (!_root.bg.hitTest(_x-_global.barvar-(_width/2), _y-40, true)) and (!_root.bg.hitTest(_x-_global.barvar-(_width/2), _y-30, true))) {
            if(_root.bg._x <= _global.left_scroll and _root.watermelon_whole._x <= 160){
            _root.fly._x -= _global.speed;
            _root.bg3._x -= _global.speed;
            _root.bg2._x -= (_global.speed /2);
            _root.bg._x -= _global.speed;
            _root.floater._x -= _global.speed;
            _root.bg_block._x -= _global.speed;
            _root.hornoad._x -= _global.speed;
            _root.robo._x -= _global.speed;
            _root.owtch._x -= _global.speed;
            _root.waver._x -= _global.speed;
            _root.reo._x -= _global.speed;
            _root.sidehopper._x -= _global.speed;
            _root.spires._x -= _global.speed;
            _root.spirem._x -= _global.speed;
            }else{
                _root.watermelon_whole._x += _global.speed;
            }
        }
    } 
I also use hittesting for ceilings the same way for example
PHP Code:
if (_root.bg.hitTest(_x, _y-50, true)) {
        _global.yvel = 10;
    }
    if (_root.bg.hitTest(_x+_global.barvar+(_width/2), _y-30, true)) {
        _global.speed *= 0;
    } 
and so on. I tried looking and implementing tonypa's tile based stuff but i started from scratch and its a pain in the bum to understand. I like my clipevent coding because i can define stuff so much easier but i would also like to find a way to generate tiles but keep the coding on the main character. Any way to do so? Or is there more code needed?