android飛機遊戲敵機移動路徑

基礎android的飛機類遊戲，與前人一樣，由surfaceView繪製遊戲畫面，另起線程式控制制繪製時間間隔達到動態效果。這裡附上最近自己寫的敵機自動飛行路徑代碼。請大家給點意見。

        在敵機管理模組，加入此段代碼。movePingXing記錄該飛機直線軌跡運行時，每次canvas繪製的x、y的偏量值。moveYuanHu記錄該飛機按圓形軌跡運行時，每次canvas繪製的x、y的偏量值。String中，“、”前面得是x方向座標位移量，後面得是y方向座標位移量。

 

 

private static String[] movePingXing = { 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,             5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,             5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,             5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,             5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0 };     private static String[] moveYuanHu = { 5 + "," + 1, 5 + "," + 1,         4 + "," + 2, 4 + "," + 2,          3 + "," + 3,3 + "," + 3,             2 + "," + 4, 2 + "," + 4,             1 + "," + 5, 1 + "," + 5,             -1 + "," + 5,-1 + "," + 5,             -2 + "," + 4,-2 + "," + 4,             -3 + "," + 3, -3 + "," + 3,             -4 + "," + 2, -4 + "," + 2,             -5 + "," + 1, -5 + "," + 1,             -5 + "," + -1,-5 + "," + -1,             -4 + "," + -2,-4 + "," + -2,             -3 + "," + -3,-3 + "," + -3,             -2 + "," + -4,-2 + "," + -4,             -1 + "," + -5,-1 + "," + -5,             1 + "," + -5,1 + "," + -5,             2 + "," + -4,2 + "," + -4,             3 + "," + -3,3 + "," + -3,             4 + "," + -2,4 + "," + -2,             5 + "," + -1,5 + "," + -1}; private static String[] movePingXing = { 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,   5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,   5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,   5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0,   5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0, 5 + "," + 0 }; private static String[] moveYuanHu = { 5 + "," + 1, 5 + "," + 1,  4 + "," + 2, 4 + "," + 2,  3 + "," + 3,3 + "," + 3,   2 + "," + 4, 2 + "," + 4,   1 + "," + 5, 1 + "," + 5,   -1 + "," + 5,-1 + "," + 5,   -2 + "," + 4,-2 + "," + 4,   -3 + "," + 3, -3 + "," + 3,   -4 + "," + 2, -4 + "," + 2,   -5 + "," + 1, -5 + "," + 1,   -5 + "," + -1,-5 + "," + -1,   -4 + "," + -2,-4 + "," + -2,   -3 + "," + -3,-3 + "," + -3,   -2 + "," + -4,-2 + "," + -4,   -1 + "," + -5,-1 + "," + -5,   1 + "," + -5,1 + "," + -5,   2 + "," + -4,2 + "," + -4,   3 + "," + -3,3 + "," + -3,   4 + "," + -2,4 + "," + -2,   5 + "," + -1,5 + "," + -1}; 

然後給出路徑添加方法，把這些座標位移量加入到moveList1。moveList1裡的內容一定要充足，必須保證在每次canvas繪製時，飛機都能得到一個有效路徑的String。否則會出現null 指標異常。

 

 

public static boolean initMoveList1() {         addPingXing();         addYuanHu();         addPingXing();         addPingXing();         addPingXing();         return true;     }     public static void addPingXing(){         Map<String, String> map;         for (int i = 0; i < movePingXing.length; i++) {             map = new HashMap<String, String>();             map.put("way", movePingXing[i]);             moveList1.add(map);         }     }          public static void addYuanHu(){         Map<String, String> map;         for (int i = 0; i < moveYuanHu.length; i++) {             map = new HashMap<String, String>();             map.put("way", moveYuanHu[i]);             moveList1.add(map);         }     } public static boolean initMoveList1() {  addPingXing();  addYuanHu();  addPingXing();  addPingXing();  addPingXing();  return true; } public static void addPingXing(){  Map<String, String> map;  for (int i = 0; i < movePingXing.length; i++) {   map = new HashMap<String, String>();   map.put("way", movePingXing[i]);   moveList1.add(map);  } }  public static void addYuanHu(){  Map<String, String> map;  for (int i = 0; i < moveYuanHu.length; i++) {   map = new HashMap<String, String>();   map.put("way", moveYuanHu[i]);   moveList1.add(map);  } } 

     調用initMoveList1（）方法後，敵機管理類就可獲得一個記錄敵機飛行軌跡的位移量的ArrayList了。

        在敵機移動的時候，插入下面代碼，實現每次繪製canvas時，讓敵機按自己設定的路徑動起來。我這裡設計時只是簡單的直線——圓行——直線飛機路徑。

 

 

Map<String, String> map= moveList1.get(enemy.getCurrentSecond());                 String moveWay = map.get("way");                 String[] zuobiao= moveWay.split(",");                 enemy.x += Integer.parseInt(zuobiao[0]);                 enemy.y += Integer.parseInt(zuobiao[1]); Map<String, String> map= moveList1.get(enemy.getCurrentSecond());    String moveWay = map.get("way");    String[] zuobiao= moveWay.split(",");    enemy.x += Integer.parseInt(zuobiao[0]);    enemy.y += Integer.parseInt(zuobiao[1]);

     上面currentSecond是一個int型變數，是敵機的屬性，記錄敵機在畫面中出現的時間。

        望高手給點意見，看有什麼地方能改進下。