在派生類中添加到虛函數

Question

我有一個繼承自piece pawn類：piece具有一個聲明為moveTo的函數，如下所示：

public virtual void moveTo(Coord newLoc)
{
    Coord origLoc = location;
    Transform transform = gameObject.GetComponent<Transform>();
    Coord transCoord = newLoc - location;

    if (LogicMaster.currentBoard[newLoc].piece != null) { 
        if (LogicMaster.currentBoard[transCoord].piece.targeted) { 
            UnityEngine.Object.Destroy(LogicMaster.currentBoard[transCoord].actor);
            LogicMaster.currentBoard[transCoord].actor = null;
        }
    }

    if (LogicMaster.currentBoard[newLoc].actor == null)
    {
        Vector3 transVector = new Vector3();

        transVector.x = transform.position.x + transCoord.x * Constants.oneRight.x;
        transVector.z = transform.position.z + transCoord.y * Constants.oneForward.y;
        transVector.y = transform.position.y;
        transform.position =  transVector;

        LogicMaster.currentBoard[newLoc].actor = gameObject;
        LogicMaster.currentBoard[newLoc].piece = this;
        LogicMaster.currentBoard[newLoc].piece.location = newLoc;
        LogicMaster.currentBoard[this].actor = null;
        LogicMaster.currentBoard[this].piece = null;
        LogicMaster.selectedPiece = null;
        LogicMaster.pieceSelected = false;
        LogicMaster.currentBoard.resetColours();
        LogicMaster.currentBoard.hideMarkers();
        LogicMaster.whiteTurn = !LogicMaster.whiteTurn;
    }
}

是否有可能在pawn類內實現重寫，該類實現moveTo內的代碼，然后將其添加到末尾？ 否則，我認為這只是復制和粘貼作業。

謝謝。

Answer 1

如CodeCaster所述，您可以重寫該方法並調用base.MoveTo（..），然后添加您自己的邏輯。

例

基類：

public class CodeFirstInstallationService : IInstallationService
{
    public virtual void InstallData(string defaultUserEmail,
        string defaultUserPassword, bool installSampleData = true)
    {
        // Doing basic logic
    }
}

從基礎派生的類：

public class MyInstallationService : CodeFirstInstallationService
{
    public override void InstallData(string defaultUserEmail,
        string defaultUserPassword, bool installSampleData = true)
    {
        // Let the base class do it´s install logic
        base.InstallData(defaultUserEmail, defaultUserPassword, installSampleData);

        // Do my own logic
        // Install flux capacitor etc
    }
}