package com.j2medev.chapter5;
import javax.microedition.lcdui.*;

public class Enemy
    implements MyGameInterface {
  private byte enemyType = ENEMY_PIG;
  public Imagex imgxEnemy;
  private int enemyX = 0, enemyY = 0;
  private int tmpEnemyX = 0;
  private int timer = 1;
  private int AOGFrog = 1;
  private int SpeedFrog = -5;
  private int frogY;

  /**
   * 構造函數
   */
  public Enemy(Imagex imgxEnemy, byte enemyType, int enemyX, int enemyY) {
    this.imgxEnemy = imgxEnemy;
    this.enemyType = enemyType;
    this.tmpEnemyX = enemyX * 16;
    this.enemyX = this.tmpEnemyX;
    this.enemyY = enemyY * 16;
    this.frogY = this.enemyY;
  }

  /**
   * 得到X值
   */
  public int getEnemyX() {
    return enemyX;
  }

  /**
   * 得到Y值
   */
  public int getEnemyY() {
    return enemyY;
  }

  /**
   * 得到寬度
   * @return int
   */
  public int getEnemyWidth() {
    return imgxEnemy.getFrameWidth();
  }

  /**
   * 得到高度
   * @return int
   */
  public int getEnemyHeight() {
    return imgxEnemy.getFrameHeight();
  }

  /**
   * 得到敵人的類型
   * @return int
   */
  public byte getEnemyType() {
    return enemyType;
  }

  public void setEnemyType(byte enemyType) {
    this.enemyType = enemyType;
  }

  public void setEnemyImagex(Imagex imgxEnemy) {
    this.imgxEnemy = imgxEnemy;
  }

  public Imagex getEnemyImagex() {
    return imgxEnemy;
  }

  /**
   * paint函數
   */
  public void paint(Graphics g, int offsetX) {
    if (enemyType == ENEMY_PANDA || enemyType == ENEMY_PANDA_DEAD) {
      imgxEnemy.draw(g, tmpEnemyX + offsetX - timer * 2, enemyY);
      if (enemyType == ENEMY_PANDA) {
        if (timer % 3 == 0) {
          imgxEnemy.setFrame(1);
        }
        if (timer % 6 == 0) {
          imgxEnemy.setFrame(0);
        }
        timer++;
      }
      enemyX = tmpEnemyX + offsetX - timer * 2;
    }
    else if (enemyType == ENEMY_PIG || enemyType == ENEMY_PIG_DEAD) {
      imgxEnemy.draw(g, tmpEnemyX + offsetX, enemyY);
      if (enemyType == ENEMY_PIG) {
        if (timer == 3) {
          imgxEnemy.setFrame(1);
        }
        if (timer == 6) {
          imgxEnemy.setFrame(0);
          timer = 1;
        }
        else {
          timer++;
        }
      }
      enemyX = tmpEnemyX + offsetX;
    }
    else if (enemyType == ENEMY_FROG || enemyType == ENEMY_FROG_DEAD) {
      imgxEnemy.draw(g, tmpEnemyX + offsetX, enemyY);
      if (enemyType == ENEMY_FROG) {
        if (timer == 4) {
          enemyY += SpeedFrog;
          SpeedFrog += AOGFrog;
          imgxEnemy.setFrame(1);
          if (SpeedFrog >= 5) {
            SpeedFrog = -5;
            timer = 1;
          }
        }
        else {
          imgxEnemy.setFrame(0);
          enemyY = frogY;
          timer++;
        }
        enemyX = tmpEnemyX + offsetX;
      }
      else {
        enemyX = tmpEnemyX + offsetX;
        if (SpeedFrog < 6) {
          enemyY += SpeedFrog;
          SpeedFrog += AOGFrog;
          if (SpeedFrog >= 6) {
            SpeedFrog = 7;
          }
        }
      }
    }
  }
}