Help how do I do this? Coding aspect to it. ActionScript 3 - Exercise 1 The foll
ID: 3530527 • Letter: H
Question
Help how do I do this? Coding aspect to it.
ActionScript 3 - Exercise 1
The following is the code I have so far, I need to add the following:
- Keyboard Control
- Screen Wrapping
---------------------------------------
----------------------------------------
package{
import flash.display.*;
import flash.events.MouseEvent;
public class Main extends MovieClip {
public function Main(){
stage.addEventListener(MouseEvent.CLICK, clickHandler);
}
private function clickHandler(event:MouseEvent):void {
stage.addChild(CartoonAnimation);
animate.x = 400;
animate.y =400;
animate.gotoAndPlay(1);
}
}
}
Explanation / Answer
package{
import flash.display.*;
import flash.events.*;
public class Main extends MovieClip {
public function Main(){
stage.addEventListener(MouseEvent.CLICK, clickHandler);
// the below code for keyboard event handling
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);
//ScreenWrapping(CartoonAnimation);
}
private function clickHandler(event:MouseEvent):void {
stage.addChild(CartoonAnimation);
animate.x = 400;
animate.y =400;
animate.gotoAndPlay(1);
}
private function keyDownHandler(event:KeyboardEvent):void {
trace("keyDownHandler: " + event.keyCode);
}
private function keyUpHandler(event:KeyboardEvent):void {
trace("keyUpHandler: " + event.keyCode);
}
// call this below function when you want to screen wrap an animation movieclip .
// for example,
//ScreenWrapping(CartoonAnimation);
private function ScreenWrapping(object:MovieClip) {
//1.
var objectHalfWidth:uint=object.width/2;
var objectHalfHeight:uint=object.height/2;
//2.
if (object.x - objectHalfWidth>stage.stageWidth) {
object.x=0-objectHalfWidth;
}
else if (object.x + objectHalfWidth <0) {
object.x=stage.stageWidth+objectHalfWidth;
}
//3.
if (object.y + objectHalfHeight<0) {
object.y=stage.stageHeight+objectHalfHeight;
}
else if (object.y - objectHalfHeight > stage.stageHeight) {
object.y=0-objectHalfHeight;
}
}
}
}
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