ããã¾ã§ç´¹ä»ãã¦ããã¯ã©ã¹ã¯ flash.display ããã±ã¼ã¸ã«å«ã¾ãã¦ããã¯ã©ã¹ã®ä¸»è¦ã¡ã³ãã¼ã§ããå°ãä¹±æ´ãªè¨ãæ¹ããã¦ãã¾ãã¨ãflash.display ããã±ã¼ã¸ã¯ AS2 ã§ã® MovieClip ãæã£ã¦ããå½¹å²ãåç·¨æãããã®ã¨è¨ããã§ããããåã¯ã©ã¹ã®å½¹å²ãæç¢ºã«ãªãã使ãããããªã£ãã®ã§ã¯ãªããã¨æãã¾ããAS2 ã«ã¯ç¡ãã£ãã³ã³ã»ãããããã¤ãåºã¦ãã¾ããããAS3 ã§ããã°ã©ãã³ã°ããä¸ã§ã¯å¤ããªãé¨åã§ãã®ã§å®éã«ããããã¨è©¦ãã¦ã¿ã¦ããã ããã°ã¨æãã¾ããã¾ã ã¢ã«ãã¡çã®ãã âæ¬å½ã¯ããåãã¯ããããªãããªï¼â ã¨ããæå¾ ã¨éãåãããããã¨ããã°ãã°ããã¾ããã©ãããã°ãããã¨æã£ããæéã®ããã¨ãã§æ§ãã¾ããã®ã§ã¬ãã¼ããã¦ãã ãããè±èªãé¢åãªæ¹ã¯ãå½é¢ç§å®ã«éã£ã¦ããã ãã¦ãOKã§ãã
説æã ãã§ã¯åããã«ããã£ããããã¨ãããã¨ã§æå¾ã«ç°¡åãªãµã³ãã«ã³ã¼ããè¼ãã¦ããã¾ããï¼HelloWorld ã§ãããã¿ã§æ¸ã¿ã¾ãããï¼ ãµã³ãã«ã³ã¼ãã§ã¯ãã³ã³ã¹ãã©ã¯ã¿ããããã main() 颿°ã®ä»£ããããã¦ãã¾ãï¼ActionScript3 ã§ã¯ã¹ã¯ãªããã ãã§ Flash ã¢ããªã±ã¼ã·ã§ã³ãåºæ¥ã¦ãã¾ãã®ã§ããããã fla ãã¡ã¤ã«ã¨ã mxml ãã¡ã¤ã«ã¨ãã®åãªãè£å©ã§ã¯ããã¾ãããããã« AS3 ã®å¯è½æ§ãã¡ãã£ã¨æãã¦ãã¾ã£ãããã¾ãã
package {
import flash.display.Sprite;
import flash.display.TextField;
import flash.text.TextFormat;
import flash.events.Event;
import flash.events.EventType;
import flash.geom.Point;
import flash.geom.Rectangle;
// Sprite ã®ãµãã¯ã©ã¹ã使
public class HelloWorld extends Sprite {
// ãã©ã¤ãã¼ã夿°ã宣è¨
private var label:TextField;
private var target:Point = new Point();
// ã³ã³ã¹ãã©ã¯ã¿
public function HelloWorld() {
createLabel();
addEventListener(EventType.ENTER_FRAME, enterFrameListener);
}
// TextField ã« Hello World ã表示ããã
private function createLabel():Void {
label = new TextField();
label.text = "Hello World";
var format:TextFormat = new TextFormat();
format.font = "Verdana";
format.color = 0xFF0000;
format.size = 16;
label.setTextFormat(format);
// ãã£ã¹ãã¬ã¤ãªã¹ãã«è¿½å
addChild(label);
}
// enterframe ã®ã¤ãã³ãå¦ç
public function enterFrameListener(event:Event):Void {
var current:Point = label.getBounds(this).topLeft;
if (Point.distance(target, current) < 1) {
resetTarget();
}
label.x += (target.x - label.x) / 8;
label.y += (target.y - label.y) / 8;
}
// ã¿ã¼ã²ãã座æ¨ã®è¨å®
private function resetTarget():Void {
target.x = Math.random() * stage.stageWidth - 100;
target.y = Math.random() * stage.stageHeight - 10;
}
}
}

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