命令模式

public class TerisMachine {

    public void toLeft(){

        System.out.println("向左移动");

    }
    public void toRight(){

        System.out.println("向右移动");

    }
    public void fastToBottom(){

        System.out.println("加速移动");
    }
    public void transform(){

        System.out.println("改变形状");

    }

}

public interface Command {

    void execute();
}

public class LeftCommand implements Command{

    private TerisMachine terisMachine;

    public LeftCommand(TerisMachine terisMachine) {
        this.terisMachine = terisMachine;
    }

    @Override
    public void execute() {
        this.terisMachine.toLeft();
    }
}

public class RightCommand implements Command{

    private TerisMachine terisMachine;

    public RightCommand(TerisMachine terisMachine) {
        this.terisMachine = terisMachine;
    }

    @Override
    public void execute() {
        this.terisMachine.toRight();
    }
}

public class FallCommand implements Command{

    private TerisMachine terisMachine;

    public FallCommand(TerisMachine terisMachine) {
        this.terisMachine = terisMachine;
    }

    @Override
    public void execute() {
        this.terisMachine.fastToBottom();
    }
}

public class TransformCommand implements Command{

    private TerisMachine terisMachine;

    public TransformCommand(TerisMachine terisMachine) {
        this.terisMachine = terisMachine;
    }

    @Override
    public void execute() {
        this.terisMachine.transform();
    }
}

public class Buttons {

    private LeftCommand leftCommand;
    private RightCommand rightCommand;
    private FallCommand fallCommand;
    private TransformCommand transformCommand;

    public void setLeftCommand(LeftCommand leftCommand) {
        this.leftCommand = leftCommand;
    }

    public void setRightCommand(RightCommand rightCommand) {
        this.rightCommand = rightCommand;
    }

    public void setFallCommand(FallCommand fallCommand) {
        this.fallCommand = fallCommand;
    }

    public void setTransformCommand(TransformCommand transformCommand) {
        this.transformCommand = transformCommand;
    }

    public void toLeft(){
        leftCommand.execute();
    }
    public void toRight(){
        rightCommand.execute();
    }
    public void fall(){
        fallCommand.execute();
    }
    public void transform(){
        transformCommand.execute();
    }


}

public class Player {

    public static void main(String[] args){

        TerisMachine terisMachine = new TerisMachine();

        LeftCommand  leftCommand = new LeftCommand(terisMachine);
        RightCommand rightCommand = new RightCommand(terisMachine);
        FallCommand  fallCommand = new FallCommand(terisMachine);
        TransformCommand transformCommand = new TransformCommand(terisMachine);


        Buttons buttons = new Buttons();
        buttons.setLeftCommand(leftCommand);
        buttons.setRightCommand(rightCommand);
        buttons.setFallCommand(fallCommand);
        buttons.setTransformCommand(transformCommand);

        buttons.toLeft();
        buttons.toRight();
        buttons.fall();
        buttons.transform();


    }

}

public class Player {

    public static void main(String[] args){

        TerisMachine terisMachine = new TerisMachine();

        terisMachine.toLeft();
        terisMachine.toRight();
        terisMachine.fastToBottom();
        terisMachine.transform();


    }

}