ActionScript 3 Working with Events Simple Mouse Event Structure
Example
Through the use of event types you can easily reduce code bloat that often occurs when defining events for many objects on stage by filtering events in 1 function rather than defining many event handling functions.
Imagine we have 10 objects on stage named object1, object2 ... object10
You could do the following:
var i: int = 1;
while(getChildByName("object"+i) != null){
var obj = getChildByName("object"+i)
obj.addEventListener(MouseEvent.CLICK, ObjectMouseEventHandler);
obj.addEventListener(MouseEvent.MOUSE_OVER, ObjectMouseEventHandler);
obj.addEventListener(MouseEvent.MOUSE_OUT, ObjectMouseEventHandler);
obj.alpha = 0.75;
i++;
}
function ObjectMouseEventHandler(evt:Event)
{
if(evt.type == "click")
{
trace(evt.currentTarget + " has been clicked");
}
else
{
evt.currentTarget.alpha = evt.type == "mouseOver" ? 1 : 0.75;
}
}
Benefits to this method include:
- Not needing to specify the quantity of objects to apply events to.
- Not needing to know specifically what object was interacted with yet still apply functionality.
- Easily applying events in bulk.
