зеркало из https://github.com/mozilla/pluotsorbet.git
102 строки
3.3 KiB
Java
102 строки
3.3 KiB
Java
/**
|
|
* Copyright 2001 Jean-Francois Doue
|
|
*
|
|
* This file is part of Asteroid Zone. Asteroid Zone is free software;
|
|
* you can redistribute it and/or modify it under the terms of the
|
|
* GNU General Public License as published by the Free Software Foundation;
|
|
* either version 2 of the License, or (at your option) any later version.
|
|
* Asteroid Zone is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Asteroid Zone; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
package asteroids;
|
|
|
|
import javax.microedition.lcdui.*;
|
|
import java.util.*;
|
|
|
|
/**
|
|
* Class to represent an explosion.
|
|
* @author Jean-Francois Doue
|
|
* @version 1.0, 2001/07/26
|
|
*/
|
|
public class Explosion extends Object {
|
|
public static byte[] xcoords;
|
|
public static byte[] ycoords;
|
|
private int _frame, _x, _y;
|
|
private static final int MAX_FRAME = 6;
|
|
public static Pool explosions;
|
|
|
|
static {
|
|
// Create and populate the explosion pool.
|
|
Explosion[] array = new Explosion[10];
|
|
for (int i = array.length - 1; i >= 0; i--) {
|
|
array[i] = new Explosion();
|
|
}
|
|
explosions = new Pool(array);
|
|
|
|
// Pre-compute the explosion images
|
|
int[] Xcoords = new int[8];
|
|
int[] Ycoords = new int[8];
|
|
for (int i = 0; i < 8; i++) {
|
|
Xcoords[i] = Mobile.cos[i << 2] * (Math.abs(Game.random.nextInt()) % 12);
|
|
Ycoords[i] = Mobile.sin[i << 2] * (Math.abs(Game.random.nextInt()) % 12);
|
|
}
|
|
xcoords = new byte[48];
|
|
ycoords = new byte[48];
|
|
for (int i = 0; i < Explosion.MAX_FRAME; i++) {
|
|
int offset = i << 3;
|
|
for (int j = 0; j < 8; j++) {
|
|
xcoords[offset + j] = (byte)(Xcoords[j] >> 8);
|
|
ycoords[offset + j] = (byte)(Ycoords[j] >> 8);
|
|
Xcoords[j] += Mobile.cos[j << 2] << 2;
|
|
Ycoords[j] += Mobile.sin[j << 2] << 2;
|
|
}
|
|
}
|
|
}
|
|
public Explosion() {
|
|
}
|
|
|
|
public final void init(int x, int y) {
|
|
_x = x;
|
|
_y = y;
|
|
_frame = 0;
|
|
}
|
|
|
|
/**
|
|
* Animate the explosion and remove those which are done.
|
|
*/
|
|
public static final void explode() {
|
|
for (explosions.current = explosions.count - 1; explosions.current >= 0;) {
|
|
Explosion e = (Explosion)explosions.pool[explosions.current--];
|
|
e._frame++;
|
|
if (e._frame >= Explosion.MAX_FRAME) {
|
|
explosions.removeCurrent();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Draw all the explosions using the supplied context.
|
|
*/
|
|
public static final void draw(Graphics g) {
|
|
for (int i = 0; i < explosions.count; i++) {
|
|
Explosion e = (Explosion)explosions.pool[i];
|
|
int offset = e._frame << 3;
|
|
for (int j = 0; j < 8; j++) {
|
|
g.drawLine(
|
|
e._x + xcoords[j + offset],
|
|
e._y + ycoords[j + offset],
|
|
e._x + xcoords[j + offset],
|
|
e._y + ycoords[j + offset]);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|