逆運動学とステート マシンを含む基本的なスネーク ゲームを開発しようとしています。ヘビの最初のセグメントが特定の「マウス」と相互作用すると、それが消えるようにしようとしています。ただし、実行すると機能せず、最終的に ArgumentError: Error #2025: The provided DisplayObject must be a child of the caller. が発生します。
これが私のコードです:
package
{
import agent.Agent;
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.events.KeyboardEvent;
import flash.geom.Point;
public class Main extends Sprite
{
private var Agents:Vector.<Agent>;
private var segments:Array;
private var numSegments:uint = 150;
private var player:Point = new Point (15, 15)
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
segments = new Array();
for(var i:uint = 0; i < numSegments; i++)
{
var segment:Segment = new Segment (5, 10);
addChild(segment);
segments.push(segment);
}
//updatePoint();
addEventListener(Event.ENTER_FRAME, onEnterFrame);
removeEventListener(Event.ADDED_TO_STAGE, init);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
// entry point
graphics.beginFill(0xeeeeee);
graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
Agents = new Vector.<Agent>();
addEventListener(Event.ENTER_FRAME, gameloop);
for (var x:int = 0; x < 10; x++)
{
var a:Agent = new Agent();
addChild(a);
Agents.push(a);
a.x = Math.random() * 10;
a.y = Math.random() * 10;
}
stage.addEventListener(MouseEvent.CLICK, createAgent);
}
private function createAgent(e:MouseEvent):void
{
var a:Agent = new Agent();
stage.addChild(a);
Agents.push(a);
a.x = mouseX;
a.y = mouseY;
}
private function gameloop(e:Event):void
{
for each (var a: Agent in Agents) {
a.update();
trace ("Follow me on Twitter.");
for each(var target: Segment in segments)
{
if (target.hitTestPtarget.x, a.y + target.y, true))
{
stage.removeChild(a);
}
}
}
}
private function onEnterFrame(event:Event):void
{
drag(segments[0], player.x, player.y);
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDown);
for(var i:uint = 1; i < numSegments; i++)
{
var segmentA:Segment = segments[i];
var segmentB:Segment = segments[i - 1];
drag(segmentA, segmentB.x, segmentB.y);
}
}
private function keyDown (evt: KeyboardEvent): void {
//87=w 68=d 83=s 65=a
if (evt.keyCode == 87)
{
player.y-=50;
}
else if (evt.keyCode == 83)
{
player.y+=50;
}
else if (evt.keyCode == 68)
{
player.x+=50;
}
else if (evt.keyCode == 65)
{
player.x-=50;
}
trace (player.x + " " + player.y);
}
private function drag(segment:Segment, xpos:Number, ypos:Number):void
{
var dx:Number = xpos - segment.x;
var dy:Number = ypos - segment.y;
var angle:Number = Math.atan2(dy, dx);
segment.rotation = angle * 180 / Math.PI;
var w:Number = segment.getPin().x - segment.x;
var h:Number = segment.getPin().y - segment.y;
segment.x = xpos - w;
segment.y = ypos - h;
}
}
}
同じトピックの他の投稿を見てみましたが、何が間違っているのかわかりません。どんな助けでも大歓迎です!