package russiagame;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class GameAreaPanel
    extends Panel {

    private Timer timer; //記時器，用于控制下落時間間隔
    private int nTime = 1000; //速度，創建記時器是使用
    private Root root; //要落下的方塊的引用，即根類
    private GameTable gTable; //創建一個游戲桌
    private int nWhich; //標志創建哪一個要下落的方塊
    private int tempnWhich; //標志下一個要創建的方塊，即提前顯示下落塊
    private int nScore = 0; //每消一行加10分，用來記錄總分數
    private boolean canMove = false; //標志是否響應鍵盤
    private Image myImage0, myImage1; //加載兩個圖片，用來覆蓋背景和組成方塊
    private boolean isRun = true; //標志是開始還是暫停，一鈕兩用

    public GameAreaPanel(GameTable gTable) {
        myImage0 = getToolkit().getImage("b0.jpg");
        myImage1 = getToolkit().getImage("b1.jpg");

        gTable.myTable = new int[gTable.x][gTable.y];
        for (int i = 0; i < gTable.x; i++)
            for (int j = 0; j < gTable.y; j++)
                gTable.myTable[i][j] = 0;
    }

    public void Init() {
        for (int i = 0; i < gTable.x; i++) //重新給游戲桌置0標志
            for (int j = 0; j < gTable.y; j++) {
                gTable.myTable[i][j] = 0;
            }
        repaint();
    }

    public void paint(Graphics g) {
        for (int i = 0; i < gTable.x; i++) //根據桌子上的標記決定是否畫方塊
            for (int j = 0; j < gTable.y; j++) {
                if (gTable.myTable[i][j] == 1) { //有，畫藍方塊
                    g.drawImage(myImage1, 0 + i * (15 + 2) + 2,
                                0 + j * (15 + 2) + 2, this);
                }
                else if (gTable.myTable[i][j] == 0) { //無，畫白方塊
                    g.drawImage(myImage0, 0 + i * (15 + 2) + 2,
                                0 + j * (15 + 2) + 2, this);
                }
            }
    }

    public void actionPerformed(ActionEvent e) {
        if (isRun) { //是開始
            timer.start();
            isRun = !isRun;
            canMove = true; //可以響應鍵盤
        }
        else { //是暫停
            timer.stop();
            isRun = !isRun;
            canMove = false; //不可以響應鍵盤
        }
    }

    public void UpdateGraph(GameTable gameTable) {
        this.gTable = gameTable;
        this.repaint();
    }

    public void update(Graphics g) {
        paint(g); //防止閃爍
    }
}