在派生类中添加虚函数

Question

我有一个继承自pawn的课程piece：piece的函数moveTo声明如下：

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;
    }
}

是否可以在pawn类中实现覆盖，以实现moveTo中的代码，但最后添加一些代码？否则我认为它只是一个复制和粘贴工作。

感谢。

Answer 1

正如CodeCaster所提到的，你可以覆盖方法并调用base.MoveTo（..）然后添加你自己的逻辑。

实施例

基类：

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

从基础派生的类：

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
    }
}