enemy.java~80~

来自「基于J2ME的手机游戏软件。可以控制游戏人物在地图上上下左右行走；可以在地图上放」· JAVA~80~ 代码 · 共 492 行

import javax.microedition.lcdui.Graphics;
import java.util.Random;
public class Enemy {
  public static final int STEP = 2;

  public static final int DIR_STATIC = 0;
  public static final int DIR_UP = 1;
  public static final int DIR_DOWN = 2;
  public static final int DIR_LEFT = 3;
  public static final int DIR_RIGHT = 4;

  private static final int REMAIN_CYC = 25;

  private World world;
  private int posX;
  private int posY;
  private int direction;
  private int step;
  private int[][] map;
  private boolean isShow;
  private int width;
  private int height;
  private ImageSet imageSet;
  private Sprite sprite;
  private boolean live;
  private int bodyRemainCyc;
  private boolean disuse;
  private int score;
  private int model;
  private int[][] road;
  private boolean isFind = false;
  private int current_p = 0;
  private int patrol_model = 0;
  private int patrol_count = 0;
  public Enemy(World world, int x, int y, int model)
  {
    this.world = world;
    this.model = model;
    imageSet = world.getImageSet();
    sprite = new Sprite(imageSet, world.ENEMY1_RUN_RIGHT, 0);
    posX = x;
    posY = y;
    init(model);
  }

  private void init(int mod)
  {
    step = STEP;
    map = world.getMap();
    isShow = false;
    width = 24;
    height = 32;
    live = true;
    disuse = false;
    bodyRemainCyc = REMAIN_CYC;
    isFind = false;
    current_p = 0;
    patrol_model = 0;//默认开始为自由模式
    patrol_count = 0;//寻路计数器
    switch (mod)
    {
      case World.ENEMY1:
        direction = DIR_RIGHT;
        score = 100;
        break;
      case World.ENEMY2:
        direction = DIR_UP;
        score = 100;
        break;
      case World.ENEMY3:
        break;
      case World.ENEMY4:
        break;
      case World.BOSS:
        break;
    }
  }

  public int getX()
  {
    return posX;
  }

  public int getY()
  {
    return posY;
  }

  public void setX(int x)
  {
    posX = x;
  }

  public void setY(int y)
  {
    posY = y;
  }

  public int getStep()
  {
    return step;
  }

  public void setStep(int s)
  {
    step = s;
  }

  public int getDirection()
  {
    return direction;
  }

  public void setDirection(int d)
  {
    direction = d;
  }

  public int getWidth()
  {
    return width;
  }

  public int getHeight()
  {
    return height;
  }




  public void cycle()
  {
    if (live) {
      int viewX = world.getViewX();
      int viewY = world.getViewY();
      if (posX - viewX > world.getViewWidth() + 30
          || posY - viewY > world.getViewHeight() + 30
          || posX < viewX - 30 || posY < viewY - 30)
      {
        isShow = false;
      }
      else
      {
        isShow = true;
      }
      map = world.getMap();
      int tileWidth = world.getTileWidth();
      int tileHeight = world.getTileHeight();
      //判定当前使用那种巡逻方式
      if(patrol_model == 0)
      {
        Random r = new Random();
        isFind = false;
        int n = Math.abs(r.nextInt()) % 5;
        if(world.getActor().isLive() == false)
        {
          if(n == 0)
          {
            n = 1;
          }
        }
        if(n != 0)
        {
          patrol_model = 1;
          patrol_count = 0;
          direction = n;
        }
        else
        {
          patrol_model = 2;
          patrol_count = 0;
          searchRoad();
          isFind = true;
          current_p = 0;
        }
        System.out.println("------------------------");
        System.out.println("patrol_model = " + patrol_model);
        System.out.println("isFind = " + isFind);
        System.out.println("direction = " + direction);

      }
      if(isFind == true)
      {
        if(patrol_count > 100)
        {
          patrol_count = 0;
          patrol_model = 1;
          direction = DIR_UP;
        }
        else
          patrol_model = 2;
      }
      patrol_count++;
      System.out.println("------------------------");
      System.out.println("patrol_model = " + patrol_model);
      System.out.println("isFind = " + isFind);
      System.out.println("direction = " + direction);

      if(patrol_model == 1)//若为自由模式
      {
        switch (direction)
        {
          case DIR_UP:
            if (sprite.getCurrentState() != world.ENEMY1_RUN_UP)
              sprite.setCurrentState(world.ENEMY1_RUN_UP, true);
            if (!collidesDetect(posX, posY - step))
            {
              up();
            }
            else
            {
              patrol_model = 0;
            }
            break;
          case DIR_DOWN:
            if (sprite.getCurrentState() != world.ENEMY1_RUN_DOWN)
              sprite.setCurrentState(world.ENEMY1_RUN_DOWN, true);
            if (!collidesDetect(posX, posY + step))
            {
              down();
            }
            else
            {
              patrol_model = 0;
            }
            break;
          case DIR_LEFT:
            if (sprite.getCurrentState() != world.ENEMY1_RUN_LEFT)
              sprite.setCurrentState(world.ENEMY1_RUN_LEFT, true);
            if (!collidesDetect(posX - step, posY))
            {
              left();
            }
            else
            {
              patrol_model = 0;
            }
            break;
          case DIR_RIGHT:
            if (sprite.getCurrentState() != world.ENEMY1_RUN_RIGHT)
              sprite.setCurrentState(world.ENEMY1_RUN_RIGHT, true);
            if (!collidesDetect(posX + step, posY))
            {
              right();
            }
            else
            {
              patrol_model = 0;
            }
            break;
          case DIR_STATIC:
          {
            //Add code on here:
          }
          break;
        }
      }
      else if(patrol_model == 2)//若为追踪模式
      {
        int cx = road[current_p][1] * 32;
        int cy = road[current_p][0] * 32;
        if (cx == posX && cy == posY)
        {
          if (current_p == road.length - 1)
          {
            isFind = false;
            patrol_model = 0;
          }
          else
          {
            current_p++;
            cx = road[current_p][1] * 32;
            cy = road[current_p][0] * 32;
          }
        }
        if (isFind == true)
        {
          if (cx == posX && cy != posY)
          {
            if (cy > posY)
            {
              down();
            }
            else if (cy < posY)
            {
              up();
            }
          }
          else if (cx != posX && cy == posY)
          {
            if (cx > posX)
            {
              right();
            }
            else if (cx < posX)
            {
              left();
            }
          }
        }
      }
      sprite.cycle();
      if (collidesDetect(world.getActor()))
      {
        world.getActor().dead();
        patrol_model = 0;
      }
    }
    else if (!disuse)
    {
      bodyRemainCyc--;
      if (bodyRemainCyc < 0)
      {
        disuse = true;
      }
    }
    System.out.println(patrol_model);
  }
  //寻路的简单替代
  private void searchRoad()
  {
    int px = world.getActor().getX();
    int py = world.getActor().getY();
    int pi = py / 32;
    int pj = px / 32;
    int ei = this.posY / 32;
    int ej = this.posX / 32;
    road = SearchRoad.search(world.getMap(), ei, ej, pi, pj);
    System.out.println("searchRoad:"+road);
  }
  public void render(Graphics gra)
  {
    if (live)
    {
      if (isShow == true)
      {
        sprite.draw(gra, posX - world.getViewX()
                    , posY - world.getViewY()
                    , Graphics.TOP | Graphics.LEFT);
        gra.setColor(0x00ff00);
        gra.drawRect(posX - world.getViewX(), posY - world.getViewY()
                     , width - 1, height - 1);
      }
    }
    else if (!disuse)
    {
      world.getImageSet().draw(gra, World.ENEMY_DEAD, 0
                               , posX - world.getViewX()
                               , posY - world.getViewY()
                               , Graphics.TOP | Graphics.LEFT);
      gra.setColor(0xffff00);
      if (world.getActor() != null)
      {
        gra.drawString("+" + score
                       , world.getActor().getX() - world.getViewX()
                       , world.getActor().getY() - world.getViewY() - 10
                       , Graphics.TOP | Graphics.LEFT);
      }
    }
  }

  public void up()
  {
    if (!collidesDetect(posX, posY - step))
    {
      posY = posY - step;
    }
  }

  public void down()
  {
    if (!collidesDetect(posX, posY + step))
    {
      posY = posY + step;
    }
  }

  public void right()
  {
    if (!collidesDetect(posX + step, posY))
    {
      posX = posX + step;
    }
  }

  public void left()
  {

    if (!collidesDetect(posX - step, posY))
    {
      posX = posX - step;
    }
  }

  private boolean collidesDetect(int x, int y)
  {
    int x1 = x;
    int y1 = y;
    int x2 = x1 + width - 1;
    int y2 = y1;
    int x3 = x1 + width - 1;
    int y3 = y1 + height - 1;
    int x4 = x1;
    int y4 = y1 + height - 1;
    int tileX = 0;
    int tileY = 0;
    int tileW = world.getTileWidth();
    int tileH = world.getTileHeight();
    //detected up-left
    tileX = y1 / tileH;
    tileY = x1 / tileW;
    if (!world.canAcross(tileX, tileY, false))
    {
      return true;
    }
    //detected up-right
    tileX = y2 / tileH;
    tileY = x2 / tileW;
    if (!world.canAcross(tileX, tileY, false))
    {
      return true;
    }
    //detected bottom-right
    tileX = y3 / tileH;
    tileY = x3 / tileW;
    if (!world.canAcross(tileX, tileY, false))
    {
      return true;
    }
    //detected bottom-left
    tileX = y4 / tileH;
    tileY = x4 / tileW;
    if (!world.canAcross(tileX, tileY, false))
    {
      return true;
    }
    return false;
  }

  private boolean collidesDetect(Actor actor)
  {
    int[][] a = new int[4][2];
    int[][] b = new int[4][2];

    int awidth = actor.getWidth();
    int aheight = actor.getHeight();
    int ax1 = actor.getX();
    int ay1 = actor.getY();
    a[0][0] = ax1;
    a[0][1] = ay1;
    a[1][0] = ax1 + awidth - 1;
    a[1][1] = ay1;
    a[2][0] = ax1 + awidth - 1;
    a[2][1] = ay1 + aheight - 1;
    a[3][0] = ax1;
    a[3][1] = ay1 + aheight - 1;
    int ex1 = posX;
    int ey1 = posY;
    b[0][0] = ex1;
    b[0][1] = ey1;
    b[1][0] = ex1 + width - 1;
    b[1][1] = ey1;
    b[2][0] = ex1 + width - 1;
    b[2][1] = ey1 + height - 1;
    b[3][0] = ex1;
    b[3][1] = ey1 + height - 1;

    if (World.collidesRect(a, b))
    {
      return true;
    }
    return false;
  }

  public void dead()
  {
    live = false;
    world.addScore(score);
  }

  public boolean isLive()
  {
    return live;
  }

  public boolean isDisuse()
  {
    return disuse;
  }
}