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Java Source | 1996-10-03 | 2.6 KB | 133 lines |
- /* Missile.java - Missile. */
-
- /*
- * Copyright (C) 1996 Mark Boyns <boyns@sdsu.edu>
- *
- * Missile Commando II
- * <URL:http://www.sdsu.edu/~boyns/java/mcii/>
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- import java.awt.Graphics;
- import java.awt.Color;
-
- class Missile extends GameObject
- {
- double m, b, x, y;
- int speed;
- int startx;
- int starty;
- int endx;
- int endy;
- Color color;
- boolean split = false;
- boolean splitme = false;
-
- Missile (int startx, int starty, int endx, int endy, int speed, Color color)
- {
- this.startx = startx;
- this.starty = starty;
- this.endx = endx;
- this.endy = endy;
- this.speed = speed;
- this.color = color;
-
- x = startx;
- y = starty;
- m = (double) (endy - starty) / (endx - startx);
- b = starty - (m * startx);
-
- if (Math.random () > 0.90)
- {
- split = true;
- }
- }
-
- Missile (int startx, int starty, int endx, int endy, int speed)
- {
- this (startx, starty, endx, endy, speed, Color.red);
- }
-
- void erase (Graphics g)
- {
- g.setColor (skyColor);
- g.drawLine (startx, starty, (int)x, (int)y);
- }
-
- void paint (Graphics g)
- {
- erase (g);
-
- if (!alive)
- {
- return;
- }
- else if (explode)
- {
- alive = false;
- explode = false;
- return;
- }
-
- y += speed;
- x = (y - b) / m;
- if (y > endy)
- {
- alive = false;
- }
- else if (split && y > (endy-starty)/3 && Math.random () > 0.50)
- {
- alive = false;
- splitme = true;
- }
-
- if (alive)
- {
- if (split && y > (endy-starty)/3)
- {
- g.setColor (Color.magenta);
- }
- else
- {
- g.setColor (color);
- }
- g.drawLine (startx, starty, (int)x, (int)y);
- }
- }
-
- boolean collision (int x2, int y2, int range)
- {
- if (!alive || explode)
- {
- return false;
- }
-
- int distance = (int) Math.sqrt (((x2 - x) * (x2 - x))
- + ((y2 - y) * (y2 - y)));
- return distance <= range;
- }
-
- boolean collision (int x2, int y2, int w, int h)
- {
- if (!alive || explode)
- {
- return false;
- }
-
- return x >= x2 && x <= (x2 + w) && y >= y2 && y <= (y2 + h);
- }
- }
-