java - ゲームのオブジェクトの移動

Question

わかりました、私はプログラミングに比較的慣れていません (プログラミングで 1 学期しか完了していません)、自分のバージョンのスペース インベーダー ゲームを作成しようとしています (http://www.aeonity.com/ab/games/arcade-classics/space- invaders.php)。私はそれをアプレットとしてプログラムしたくありません。Java の StdDraw ライブラリを使用してすべてを描画します。

今、私はすでにすべてを描き終えましたが、「宇宙船/敵」の動きに問題があります。敵を1つ動かす方法を見つけましたが、一度に動かすことができません。

敵を作成する機能は、48 体ごとの位置を自分で書かなければならなかったので、それほど優れていないと思います。前もって感謝します。

/** Draw Enemies*/
public class Enemy{
    //yr and xr positions for rectangle
    private double x1, y1, r1, w, h, xr, yr;
    private double x2, y2, r2, x3, y3, r3;
    public Enemy(double x, double y, double r, double width, double height, double xRec, double yRec,
    double xSec, double ySec, double rSec, double xThird, double yThird, double rThird)
    {x1 = x; y1 = y; r1 = r; w = width; h = height; xr = xRec; yr = yRec;
     x2 = xSec; y2 = ySec; r2 = rSec; x3 = xThird; y3 = yThird; r3 = rThird;}

public void DRAW_ENEMY(){
    StdDraw.setPenColor(StdDraw.PINK);
    StdDraw.filledCircle(x1, y1, r1);
    StdDraw.filledCircle(x2, y2, r2);
    StdDraw.filledCircle(x3, y3, r3);
    StdDraw.filledRectangle(xr, yr, w, h);
}
public void MOVE_ENEMY(Enemy e11, Enemy e12) {
    double vx = 0.005;

    while(true){
        if(e11.x2 > e12.x2 || e11.x1 < 0.004) {
            vx = -vx;
        }
        //Update position
        e11.x1 = e11.x1 + vx;
        e11.x2 = e11.x2 + vx;
        e11.x3 = e11.x3 + vx;
        e11.xr = e11.xr + vx;

        // clear the background
        StdDraw.setPenColor(StdDraw.BLACK);
        StdDraw.filledRectangle(0.5, 0.67, 0.6,0.18 );

        // draw ball on the screen
        StdDraw.setPenColor(StdDraw.PINK); 
        e11.DRAW_ENEMY();

        // display and pause for 20 ms
         StdDraw.show(80);
    }
}


//Test client
public static void main(String[] args){
    // create every object
    Enemy e11 = new  Enemy(0.10, 0.84, 0.01, 0.007, 0.022, 0.112, 0.82, 0.124, 0.84, 0.01, 0.112, 0.8, 0.009);
    e11.DRAW_ENEMY();
    Enemy e12 = new  Enemy(0.17, 0.84, 0.01, 0.007, 0.022, 0.182, 0.82, 0.194, 0.84, 0.01, 0.182, 0.8, 0.009);
    e12.DRAW_ENEMY();
    Enemy e13 = new  Enemy(0.24, 0.84, 0.01, 0.007, 0.022, 0.252, 0.82, 0.264, 0.84, 0.01, 0.252, 0.8, 0.009);
    e13.DRAW_ENEMY();
    Enemy e14 = new  Enemy(0.31, 0.84, 0.01, 0.007, 0.022, 0.322, 0.82, 0.334, 0.84, 0.01, 0.322, 0.8, 0.009);
    e14.DRAW_ENEMY();
    Enemy e15 = new  Enemy(0.38, 0.84, 0.01, 0.007, 0.022, 0.392, 0.82, 0.404, 0.84, 0.01, 0.392, 0.8, 0.009);
    e15.DRAW_ENEMY();
    Enemy e16 = new  Enemy(0.45, 0.84, 0.01, 0.007, 0.022, 0.462, 0.82, 0.474, 0.84, 0.01, 0.462, 0.8, 0.009);
    e16.DRAW_ENEMY();
    Enemy e17 = new  Enemy(0.52, 0.84, 0.01, 0.007, 0.022, 0.532, 0.82, 0.544, 0.84, 0.01, 0.532, 0.8, 0.009);
    e17.DRAW_ENEMY();
    Enemy e18 = new  Enemy(0.59, 0.84, 0.01, 0.007, 0.022, 0.602, 0.82, 0.614, 0.84, 0.01, 0.602, 0.8, 0.009);
    e18.DRAW_ENEMY();
    Enemy e19 = new  Enemy(0.66, 0.84, 0.01, 0.007, 0.022, 0.672, 0.82, 0.684, 0.84, 0.01, 0.672, 0.8, 0.009);
    e19.DRAW_ENEMY();
    Enemy e110 = new Enemy(0.73, 0.84, 0.01, 0.007, 0.022, 0.742, 0.82, 0.754, 0.84, 0.01, 0.742, 0.8, 0.009);
    e110.DRAW_ENEMY();
    Enemy e111 = new Enemy(0.80, 0.84, 0.01, 0.007, 0.022, 0.812, 0.82, 0.824, 0.84, 0.01, 0.812, 0.8, 0.009);
    e111.DRAW_ENEMY();
    Enemy e112 = new Enemy(0.87, 0.84, 0.01, 0.007, 0.022, 0.882, 0.82, 0.894, 0.84, 0.01, 0.882, 0.8, 0.009);
    e112.DRAW_ENEMY();

    Enemy e21 = new  Enemy(0.10, 0.74, 0.01, 0.007, 0.022, 0.112, 0.72, 0.124, 0.74, 0.01, 0.112, 0.7, 0.009);
    e21.DRAW_ENEMY();
    Enemy e22 = new  Enemy(0.17, 0.74, 0.01, 0.007, 0.022, 0.182, 0.72, 0.194, 0.74, 0.01, 0.182, 0.7, 0.009);
    e22.DRAW_ENEMY();
    Enemy e23 = new  Enemy(0.24, 0.74, 0.01, 0.007, 0.022, 0.252, 0.72, 0.264, 0.74, 0.01, 0.252, 0.7, 0.009);
    e23.DRAW_ENEMY();
    Enemy e24 = new  Enemy(0.31, 0.74, 0.01, 0.007, 0.022, 0.322, 0.72, 0.334, 0.74, 0.01, 0.322, 0.7, 0.009);
    e24.DRAW_ENEMY();
    Enemy e25 = new  Enemy(0.38, 0.74, 0.01, 0.007, 0.022, 0.392, 0.72, 0.404, 0.74, 0.01, 0.392, 0.7, 0.009);
    e25.DRAW_ENEMY();
    Enemy e26 = new  Enemy(0.45, 0.74, 0.01, 0.007, 0.022, 0.462, 0.72, 0.474, 0.74, 0.01, 0.462, 0.7, 0.009);
    e26.DRAW_ENEMY();
    Enemy e27 = new  Enemy(0.52, 0.74, 0.01, 0.007, 0.022, 0.532, 0.72, 0.544, 0.74, 0.01, 0.532, 0.7, 0.009);
    e27.DRAW_ENEMY();
    Enemy e28 = new  Enemy(0.59, 0.74, 0.01, 0.007, 0.022, 0.602, 0.72, 0.614, 0.74, 0.01, 0.602, 0.7, 0.009);
    e28.DRAW_ENEMY();
    Enemy e29 = new  Enemy(0.66, 0.74, 0.01, 0.007, 0.022, 0.672, 0.72, 0.684, 0.74, 0.01, 0.672, 0.7, 0.009);
    e29.DRAW_ENEMY();
    Enemy e210 = new Enemy(0.73, 0.74, 0.01, 0.007, 0.022, 0.742, 0.72, 0.754, 0.74, 0.01, 0.742, 0.7, 0.009);
    e210.DRAW_ENEMY();
    Enemy e211 = new Enemy(0.80, 0.74, 0.01, 0.007, 0.022, 0.812, 0.72, 0.824, 0.74, 0.01, 0.812, 0.7, 0.009);
    e211.DRAW_ENEMY();
    Enemy e212 = new Enemy(0.87, 0.74, 0.01, 0.007, 0.022, 0.882, 0.72, 0.894, 0.74, 0.01, 0.882, 0.7, 0.009);
    e212.DRAW_ENEMY();

    Enemy e31 = new  Enemy(0.10, 0.64, 0.01, 0.007, 0.022, 0.112, 0.62, 0.124, 0.64, 0.01, 0.112, 0.6, 0.009);
    e31.DRAW_ENEMY();
    Enemy e32 = new  Enemy(0.17, 0.64, 0.01, 0.007, 0.022, 0.182, 0.62, 0.194, 0.64, 0.01, 0.182, 0.6, 0.009);
    e32.DRAW_ENEMY();
    Enemy e33 = new  Enemy(0.24, 0.64, 0.01, 0.007, 0.022, 0.252, 0.62, 0.264, 0.64, 0.01, 0.252, 0.6, 0.009);
    e33.DRAW_ENEMY();
    Enemy e34 = new  Enemy(0.31, 0.64, 0.01, 0.007, 0.022, 0.322, 0.62, 0.334, 0.64, 0.01, 0.322, 0.6, 0.009);
    e34.DRAW_ENEMY();
    Enemy e35 = new  Enemy(0.38, 0.64, 0.01, 0.007, 0.022, 0.392, 0.62, 0.404, 0.64, 0.01, 0.392, 0.6, 0.009);
    e35.DRAW_ENEMY();
    Enemy e36 = new  Enemy(0.45, 0.64, 0.01, 0.007, 0.022, 0.462, 0.62, 0.474, 0.64, 0.01, 0.462, 0.6, 0.009);
    e36.DRAW_ENEMY();
    Enemy e37 = new  Enemy(0.52, 0.64, 0.01, 0.007, 0.022, 0.532, 0.62, 0.544, 0.64, 0.01, 0.532, 0.6, 0.009);
    e37.DRAW_ENEMY();
    Enemy e38 = new  Enemy(0.59, 0.64, 0.01, 0.007, 0.022, 0.602, 0.62, 0.614, 0.64, 0.01, 0.602, 0.6, 0.009);
    e38.DRAW_ENEMY();
    Enemy e39 = new  Enemy(0.66, 0.64, 0.01, 0.007, 0.022, 0.672, 0.62, 0.684, 0.64, 0.01, 0.672, 0.6, 0.009);
    e39.DRAW_ENEMY();
    Enemy e310 = new Enemy(0.73, 0.64, 0.01, 0.007, 0.022, 0.742, 0.62, 0.754, 0.64, 0.01, 0.742, 0.6, 0.009);
    e310.DRAW_ENEMY();
    Enemy e311 = new Enemy(0.80, 0.64, 0.01, 0.007, 0.022, 0.812, 0.62, 0.824, 0.64, 0.01, 0.812, 0.6, 0.009);
    e311.DRAW_ENEMY();
    Enemy e312 = new Enemy(0.87, 0.64, 0.01, 0.007, 0.022, 0.882, 0.62, 0.894, 0.64, 0.01, 0.882, 0.6, 0.009);
    e312.DRAW_ENEMY();

    Enemy e41 = new  Enemy(0.10, 0.54, 0.01, 0.007, 0.022, 0.112, 0.52, 0.124, 0.54, 0.01, 0.112, 0.5, 0.009);
    e41.DRAW_ENEMY();
    Enemy e42 = new  Enemy(0.17, 0.54, 0.01, 0.007, 0.022, 0.182, 0.52, 0.194, 0.54, 0.01, 0.182, 0.5, 0.009);
    e42.DRAW_ENEMY();
    Enemy e43 = new  Enemy(0.24, 0.54, 0.01, 0.007, 0.022, 0.252, 0.52, 0.264, 0.54, 0.01, 0.252, 0.5, 0.009);
    e43.DRAW_ENEMY();
    Enemy e44 = new  Enemy(0.31, 0.54, 0.01, 0.007, 0.022, 0.322, 0.52, 0.334, 0.54, 0.01, 0.322, 0.5, 0.009);
    e44.DRAW_ENEMY();
    Enemy e45 = new  Enemy(0.38, 0.54, 0.01, 0.007, 0.022, 0.392, 0.52, 0.404, 0.54, 0.01, 0.392, 0.5, 0.009);
    e45.DRAW_ENEMY();
    Enemy e46 = new  Enemy(0.45, 0.54, 0.01, 0.007, 0.022, 0.462, 0.52, 0.474, 0.54, 0.01, 0.462, 0.5, 0.009);
    e46.DRAW_ENEMY();
    Enemy e47 = new  Enemy(0.52, 0.54, 0.01, 0.007, 0.022, 0.532, 0.52, 0.544, 0.54, 0.01, 0.532, 0.5, 0.009);
    e47.DRAW_ENEMY();
    Enemy e48 = new  Enemy(0.59, 0.54, 0.01, 0.007, 0.022, 0.602, 0.52, 0.614, 0.54, 0.01, 0.602, 0.5, 0.009);
    e48.DRAW_ENEMY();
    Enemy e49 = new  Enemy(0.66, 0.54, 0.01, 0.007, 0.022, 0.672, 0.52, 0.684, 0.54, 0.01, 0.672, 0.5, 0.009);
    e49.DRAW_ENEMY();
    Enemy e410 = new Enemy(0.73, 0.54, 0.01, 0.007, 0.022, 0.742, 0.52, 0.754, 0.54, 0.01, 0.742, 0.5, 0.009);
    e410.DRAW_ENEMY();
    Enemy e411 = new Enemy(0.80, 0.54, 0.01, 0.007, 0.022, 0.812, 0.52, 0.824, 0.54, 0.01, 0.812, 0.5, 0.009);
    e411.DRAW_ENEMY();
    Enemy e412 = new Enemy(0.87, 0.54, 0.01, 0.007, 0.022, 0.882, 0.52, 0.894, 0.54, 0.01, 0.882, 0.5, 0.009);
    e412.DRAW_ENEMY();
    e11.MOVE_ENEMY(e11,e12);

}
}

Answer 1

最初に、それらをもう少しうまくインスタンス化しましょう。

List<Enemy> enemies = new ArrayList<Enemy>();

for(int y = 0; y < 4; y++) {
  for(int x = 0; x < 12; x++) {
    Enemy enemy = new Enemy(x,y); //all other variables can be coded in constructor
    enemies.add(enemy);
  }
}

それらはすべてリストにあるので、それらを更新しましょう

for(Enemy e : enemies) {
  e.update(); //move a single enemy in the usual pattern ignoring his buddies
}

そして描く

for(Enemy e : enemies) {
  e.draw();
}