WPF/Silverlight 遊戲開發教程（十八之三）：精靈屬性初始化與生命執行緒改進

承接上節，新增兩個關鍵屬性 HoldWidth、HoldHeight 將在遊戲中對精靈起關鍵調控作用。完成屬性定義後，需將角色身體（Body0/1.gif）與武器（Weapon1/2.gif）大圖加載專案：

初始化主角精靈

QXSpirit Spirit = new QXSpirit();
private void InitSpirit()
{
    Spirit.X = 300;
    Spirit.Y = 400;
    Spirit.Timer.Interval = TimeSpan.FromMilliseconds(150);
    Spirit.Equipment[0] = 0;
    Spirit.Equipment[1] = 1;
    Spirit.EachActionFrameRange = new int[] { 5, 8, 7, 6, 8 };
    Spirit.DirectionFrameNum = 34;
    Spirit.TotalWidth = 5100;
    Spirit.TotalHeight = 1200;
    Spirit.Source = Super.EquipPart(Spirit.Equipment,
        Spirit.DirectionNum, Spirit.DirectionFrameNum,
        Spirit.TotalWidth, Spirit.TotalHeight,
        Spirit.SingleWidth, Spirit.SingleHeight);
    CarrIEr.Children.Add(Spirit);
}

生命執行緒改進：幀推進器與動態圖片更新

int _FrameCounter = 1;
public int FrameCounter { get { return _FrameCounter; } set { _FrameCounter = value; } }

private void Timer_Tick(object sender, EventArgs e)
{
    if (OldAction != Action) { ChangeAction(); }
    Body.Source = Source[(int)Direction, FrameCounter];
    FrameCounter = FrameCounter == CurrentEndFrame ? CurrentStartFrame : FrameCounter + 1;
}

若動作改變則呼叫 ChangeAction()，接著依朝向與幀推進器動態更新 Body.Source，幀推進器在起始與結束幀之間循環，形成連續動畫。