var moveSteps:int = 20;
var drag_mode:int = 0;
var main_x, main_y:Number;
addEventListener(Event.ENTER_FRAME, getMouseXY);
startDrag_btn.addEventListener(MouseEvent.CLICK, dragStart);
moveTo_btn.addEventListener(MouseEvent.CLICK, moveStart);
stop_btn.addEventListener(MouseEvent.CLICK, dragStop);
stop();

function getMouseXY(event:Event) {
	var mx:Number = mouseX;
	var my:Number = mouseY;
	if ( mx < 50 ) {
		mx = 50;
	}
	if ( mx > 590 ) {
		mx = 590;
	}
	if ( my < 50 ) {
		my = 50;
	}
	if ( my > 350 ) {
		my = 350;
	}
	main_x = mx;
	main_y = my;
	if ( drag_mode > 0 ) {
		mouse_txt.text = "主角座標(" + main_x + " ," + main_y + ")";
	} else {
		mouse_txt.text = "";
	}
}
function dragStart(event:MouseEvent) {
	actor_mc.gotoAndStop(1);
	if ( drag_mode == 2 ) {
		actor_mc.removeEventListener(Event.ENTER_FRAME, moveTo);
	}
	actor_mc.startDrag(true, new Rectangle(50,50,540,300));
	drag_mode = 1;
}
function moveStart(event:MouseEvent) {
	actor_mc.gotoAndStop(2);
	if ( drag_mode == 1 ) {
		actor_mc.stopDrag();
	}
	actor_mc.addEventListener(Event.ENTER_FRAME, moveTo);
	drag_mode = 2;
}
function moveTo(event:Event) {
	var dx:Number = (actor_mc.x - main_x) / moveSteps;
	var dy:Number = (actor_mc.y - main_y) / moveSteps;
	actor_mc.x -= dx;
	actor_mc.y -= dy;
}
function dragStop(event:MouseEvent) {
	if ( drag_mode == 1 ) {
		actor_mc.stopDrag();
	} else if ( drag_mode == 2 ) {
		actor_mc.removeEventListener(Event.ENTER_FRAME, moveTo);
	}
	drag_mode = 0;
}