GIDEROS CALL PARENT CONSTRUCOTR HOW TO
GIDEROS CALL PARENT CONSTRUCOTR MOVIE

Open the Properties panel and give the name ' sfer' to the instance on the stage (the shape converted into a Movie Clip), in the top box, where '' is written.

Open a new Flash document, draw a shape on the stage (for example a circle) and convert it into a MovieClip (from Modify - Convert to Symbol, make sure the middle point from Registration is checked, this sets its center of coordinates).Delete the code that initially appears in the document and copy the code above, then save it with the name ' Mover.as'. On the window that opens, type Mover for the class name. Open from File -> New a new ' ActionScript 3.0 Class document'.To test this class, follow these steps: InsMC.removeEventListener(Event.ENTER_FRAME, this.updatePosition) removes the event listener registered in 'startMove()' Define a public method to stop the moving (Event.ENTER_FRAME, this.updatePosition) this calls the protected method, updatePosition Apply an event listener ENTER_FRAME to 'insMC' Define a public method used to start the moving

Increments the 'x' and 'y' distance of the 'insMC' with the values from the 'xVel' and 'yVel' properties Protected function updatePosition(evtObj:Event):void Create a method with 'protected' attribute (can be used only in this class and it's sub-classes) set the properties values with the values from parameters Create the constructor, takes as arguments a MovieClip instance and 2 numerical valuesįunction Mover(inMC:MovieClip, xV:Number, yV:Number) 'insMC' - for the MovieCplip instance, 'xVel' - for horizontal speed, 'yVel' - for vertical speed Import the predefined ActionScript 3 classes used in this class The object that must be moved and the values for it's speed on the x/y axis are passed in arguments when the object instance of the class is created ( more explanations are found in the code). We will create a base class, named 'Mover', which can be used to move objects in a Flash presentation.

GIDEROS CALL PARENT CONSTRUCOTR HOW TO

Here's how to use inheritance in ActionScript 3 programming. As in nature, children inherit the parent's genes. Inheritance enables you to define a base class (also called parent class) and create one or more classes derived from it.Ī class that inherits from another is said to be a subclass of it, or child class.Ī child class inherits all public and protected properties and methods from the parent, and can use them in it's own code and transmits them when an instance of the child subclass is created. Inheritage is a characteristic of the classes that lets you to transfer /use properties, constants and methods from one class to another, in an hierarchical structure. Inheritance is one of the most useful instruments of the Object Oriented Programming - OOP.

Gideros call parent construcotr