~**To Gardening Hints and Links**~

/* Centipedo.java - based on the arcade game Centipede. */ /* * Copyright (C) 1996 Mark Boyns * * Centipedo * * 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. */  /** * Centipedo is a fast-paced action game based on the arcade game * Centipede. * * @version 1.0 26 Mar 1996 * @author Mark Boyns */ import java.applet.Applet; import java.applet.AudioClip; import java.awt.Color; import java.awt.Graphics; import java.awt.Point; import java.awt.Font; import java.awt.FontMetrics; import java.awt.Image; import java.awt.MediaTracker; import java.awt.Event; import java.awt.Polygon; /** * Mushroom - extend Point to keep track of damage. */ class Mushroom extends Point { int damage = 0; Mushroom (int x, int y) { super (x, y); } } /** * Centipede - extend Point to keep track of vertical and horizontal * direction. */ class Centipede extends Point { int hort_dir = 0; int vert_dir = 0; Centipede (int x, int y, int hort_dir, int vert_dir) { super (x, y); this.hort_dir = hort_dir; this.vert_dir = vert_dir; } } /** * Scorpion - extend Point to keep track of horizontal direction. */ class Scorpion extends Point { int hort_dir = 0; Scorpion (int x, int y, int hort_dir) { super (x, y); this.hort_dir = hort_dir; } } /** * Beetle - extend Point to keep track of horizontal direction. */ class Beetle extends Point { int hort_dir = 0; Beetle (int x, int y, int hort_dir) { super (x, y); this.hort_dir = hort_dir; } } /** * Spider - extend Point to keep track of vertical and horizontal * direction and starting direction. */ class Spider extends Point { int hort_dir = 0; int vert_dir = 0; int start_dir = 0; Spider (int x, int y, int hort_dir, int vert_dir) { super (x, y); this.hort_dir = hort_dir; this.vert_dir = vert_dir; } } /** * Centipdo - everything else */ public class centipedo extends java.applet.Applet implements Runnable { /** * Screen sizes. */ final int screen_width = 600; final int field_height = 416; final int stats_height = 32; /** * Points */ final int mushroom_points = 5; final int centipede_points = 10; final int beetle_points = 20; final int flea_points = 50; final int spider_points = 75; final int scorpion_points = 500; final int extra_life_points = 4000; /** * MediaTracker IDs used for image loading. */ final int tracker_player_id = 0; final int tracker_shot_id = 1; final int tracker_mushroom_id = 2; final int tracker_centipede_id = 3; final int tracker_beetle_id = 4; final int tracker_scorpion_id = 5; final int tracker_spider_id = 6; final int tracker_flea_id = 6; /** * Colors */ final Color missing_image_color = Color.black; final Color background_colors[] = { Color.white, Color.cyan, Color.yellow, Color.orange, Color.green, Color.pink, }; /** * Fonts */ Font big_font; FontMetrics big_font_metrics; /** * MediaTracker and Images */ MediaTracker tracker; Image player_image; Image dead_player_image; Image shot_image; Image mushroom_image; Image centipede_images[]; Image beetle_images[]; Image scorpion_images[]; Image spider_image; Image flea_image; /** * Sounds */ AudioClip fire_shot_sound = null; AudioClip destroy_mushroom_sound = null; AudioClip destroy_centipede_sound = null; AudioClip destroy_beetle_sound = null; AudioClip destroy_scorpion_sound = null; AudioClip destroy_spider_sound = null; AudioClip destroy_flea_sound = null; AudioClip destroy_player_sound = null; AudioClip new_level_sound = null; AudioClip extra_life_sound = null; /** * Status flags */ boolean game_over = true; boolean clear_screen = false; boolean mouse_down = false; boolean need_reset = false; boolean update_mushrooms = true; boolean update_level = true; boolean update_score = true; boolean update_lives = true; boolean update_player = true; boolean expand_mushrooms = false; boolean paused = false; /** * The mouse */ Point mouse; Point mouse_loc; /** * The creatures */ Beetle beetles[] = null; Centipede centipede[] = null; Point fleas[] = null; Scorpion scorpions[] = null; Spider spiders[] = null; /** * Mushrooms */ Mushroom mushrooms[] = null; /** * Shots */ Point shots[] = null; /** * The game thread. */ Thread thread = null; /** * Misc. game parameters. */ int centipede_length = 12; int max_shots = 5; int max_mushrooms = 40; int max_beetles = 0; int max_scorpions = 0; int max_spiders = 0; int max_fleas = 0; int max_creature_count = 100; int shot_speed = 40; int mushroom_count = 0; int lives = 0; int level = 0; int score = 0; int lscore = 0; public void init () { int i; /* Load the font */ big_font = new Font ("TimesRoman", Font.BOLD, 24); big_font_metrics = getFontMetrics (big_font); setFont (big_font); /* Load all the images using MediaTracker. */ tracker = new MediaTracker (this); player_image = getImage (getCodeBase (), "images/player.gif"); tracker.addImage (player_image, tracker_player_id); dead_player_image = getImage (getCodeBase (), "images/dead_player.gif"); tracker.addImage (dead_player_image, tracker_player_id); shot_image = getImage (getCodeBase (), "images/shot.gif"); tracker.addImage (shot_image, tracker_shot_id); mushroom_image = getImage (getCodeBase (), "images/mushroom.gif"); tracker.addImage (mushroom_image, tracker_mushroom_id); beetle_images = new Image[2]; beetle_images[0] = getImage (getCodeBase (), "images/beetle_right.gif"); beetle_images[1] = getImage (getCodeBase (), "images/beetle_left.gif"); tracker.addImage (beetle_images[0], tracker_beetle_id); tracker.addImage (beetle_images[1], tracker_beetle_id); scorpion_images = new Image[2]; scorpion_images[0] = getImage (getCodeBase (), "images/scorpion_right.gif"); scorpion_images[1] = getImage (getCodeBase (), "images/scorpion_left.gif"); tracker.addImage (scorpion_images[0], tracker_scorpion_id); tracker.addImage (scorpion_images[1], tracker_scorpion_id); spider_image = getImage (getCodeBase (), "images/spider.gif"); tracker.addImage (spider_image, tracker_spider_id); flea_image = getImage (getCodeBase (), "images/flea.gif"); tracker.addImage (flea_image, tracker_flea_id); centipede_images = new Image[2]; centipede_images[0] = getImage (getCodeBase (), "images/head.gif"); centipede_images[1] = getImage (getCodeBase (), "images/body.gif"); tracker.addImage (centipede_images[0], tracker_centipede_id); tracker.addImage (centipede_images[1], tracker_centipede_id); /* Load all the sounds. */ fire_shot_sound = getAudioClip (getCodeBase (), "sounds/shot.au"); destroy_mushroom_sound = getAudioClip (getCodeBase (), "sounds/drip.au"); destroy_centipede_sound = getAudioClip (getCodeBase (), "sounds/Water.au"); destroy_beetle_sound = getAudioClip (getCodeBase (), "sounds/crunch.au"); destroy_scorpion_sound = getAudioClip (getCodeBase (), "sounds/wohoo.au"); destroy_spider_sound = getAudioClip (getCodeBase (), "sounds/hammer.au"); destroy_flea_sound = getAudioClip (getCodeBase (), "sounds/hehehehe.au"); destroy_player_sound = getAudioClip (getCodeBase (), "sounds/crap1.au"); new_level_sound = getAudioClip (getCodeBase (), "sounds/magic.au"); extra_life_sound = getAudioClip (getCodeBase (), "sounds/bleep.au"); /* Create the array of player shots. Only needs to be done once. */ shots = new Point[max_shots]; for (i = 0; i < shots.length; i++) { shots[i] = new Point (0, 0); } /* Mouse */ mouse_loc = new Point (screen_width/2, field_height/2); mouse = new Point (screen_width/2, field_height/2); setBackground (background_colors[0]); resize (screen_width, field_height + stats_height); /* Start the game! */ thread = new Thread (this); thread.start (); } public void start () { if (thread == null) { thread = new Thread (this); thread.start (); } } public void stop () { if (thread != null && thread.isAlive ()) { thread.stop (); thread = null; } } public void run () { int i; int tick; double chance; boolean have_mushroom_image = false; /* Start loading the images */ tracker.checkAll (true); /* Demo settings */ max_beetles = 3; max_scorpions = 1; max_spiders = 1; max_fleas = 3; reset_creatures (); generate_centipede (); generate_mushrooms (); for (;;) { /* Randomly generate creatures. */ chance = Math.random (); if (chance < 0.50) { generate_beetle (); } if (chance < 0.30) { generate_spider (); } if (chance < 0.05) { generate_scorpion (); } /* Generate fleas to generate mushrooms. */ if (mushroom_count < max_mushrooms) { generate_flea (); } /* Fire player shots */ if (mouse_down) { fire_shot (mouse_loc.x, mouse_loc.y); } if (!have_mushroom_image) { have_mushroom_image = tracker.checkID (tracker_mushroom_id, true); if (have_mushroom_image) { clear_screen = true; update_mushrooms = true; update_lives = true; update_score = true; update_level = true; } } /* Update the screen. */ repaint (); /* Sleep for 1/10 a second. */ try { Thread.sleep (100); } catch (Exception e) { return; } } } void start_game () { lives = 3; level = 1; score = 0; lscore = 0; max_beetles = 1; max_scorpions = 0; max_spiders = 1; max_fleas = 1; game_over = false; clear_screen = true; setBackground (background_colors[(level-1) % background_colors.length]); update_lives = true; update_score = true; update_level = true; reset_creatures (); generate_mushrooms (); generate_centipede (); } void reset_creatures () { int i; beetles = new Beetle[Math.min (max_beetles, max_creature_count)]; for (i = 0; i < beetles.length; i++) { beetles[i] = new Beetle (0, 0, 0); } scorpions = new Scorpion[Math.min (max_scorpions, max_creature_count)]; for (i = 0; i < scorpions.length; i++) { scorpions[i] = new Scorpion (0, 0, 0); } spiders = new Spider[Math.min (max_spiders, max_creature_count)]; for (i = 0; i < spiders.length; i++) { spiders[i] = new Spider (0, 0, 0, 0); } fleas = new Point[Math.min (max_fleas, max_creature_count)]; for (i = 0; i < fleas.length; i++) { fleas[i] = new Point (0, 0); } } void reset_game () { int i; for (i = 0; i < shots.length; i++) { shots[i].x = 0; shots[i].y = 0; } if (centipede != null) { generate_centipede (); } clear_screen = true; update_mushrooms = true; update_lives = true; update_score = true; update_level = true; reset_creatures (); } void new_level () { if (new_level_sound != null) { new_level_sound.play (); } level++; setBackground (background_colors[(level-1) % background_colors.length]); clear_screen = true; update_mushrooms = true; update_lives = true; update_score = true; update_level = true; update_player = true; generate_centipede (); if ((level % 3) == 0) { if (max_scorpions == 0) { max_scorpions = Math.min (max_scorpions + 1, max_creature_count); } max_beetles = Math.min (max_beetles + 1, max_creature_count); max_fleas = Math.min (max_fleas + 1, max_creature_count); } if ((level % 5) == 0) { max_spiders = Math.min (max_spiders + 1, max_creature_count); max_scorpions = Math.min (max_scorpions + 1, max_creature_count); } reset_creatures (); } void suspend_game () { if (thread != null && !game_over) { thread.suspend (); paused = true; clear_screen = true; repaint (); } } void resume_game () { if (thread != null && !game_over) { thread.resume (); paused = false; clear_screen = true; update_mushrooms = true; update_lives = true; update_score = true; update_level = true; update_player = true; } } /* Handle mouse up events. */ public boolean mouseUp (Event e, int x, int y) { if (game_over) { start_game (); } mouse_down = false; return true; } /* Handle mouse down events. */ public boolean mouseDown (Event e, int x, int y) { mouse_down = true; return true; } void move_mouse (int x, int y) { int min_y = field_height - field_height/3; if (y < min_y) { y = min_y; } else if (y > field_height - 16) { y = field_height - 16; } mouse_loc.move (x, y); } /* Handle mouse move events. */ public boolean mouseMove (Event e, int x, int y) { move_mouse (x, y); return true; } /* Handle mouse drag events. */ public boolean mouseDrag (Event e, int x, int y) { move_mouse (x, y); return true; } /* Handle keyboard events. */ public boolean keyDown (Event e, int key) { switch (key) { case 'g': case 'G': if (!paused) { start_game (); } break; case 'p': case 'P': if (paused) { resume_game (); } else { suspend_game (); } break; case 'x': new_level (); break; } return true; } /* Handle mouse enter events. */ public boolean mouseEnter (Event e, int x, int y) { if (!game_over) { resume_game (); } return true; } /* Handle mouse exit events. */ public boolean mouseExit (Event e, int x, int y) { if (!game_over) { suspend_game (); } return true; } boolean collision (Point p1, int r1, Point p2, int r2) { int dist = (int) Math.sqrt (((p2.x - p1.x) * (p2.x - p1.x)) + ((p2.y - p1.y) * (p2.y - p1.y))); int range = r1 + r2; //System.out.println ("dist = " + dist + " range = " + range); return dist <= range; } void fire_shot (int x, int y) { int i; if (game_over) { return; } for (i = 0; i < shots.length; i++) { if (shots[i].y == 0) { shots[i].x = x; shots[i].y = y; break; } } if (i < shots.length) { if (fire_shot_sound != null) { fire_shot_sound.play (); } } } void increment_score (int points) { score += points; lscore += points; if (lscore >= extra_life_points) { if (extra_life_sound != null) { extra_life_sound.play (); } lscore -= extra_life_points; lives++; update_lives = true; } update_score = true; } void destroy_mushroom (Graphics g, int i) { increment_score (mushroom_points); if (destroy_mushroom_sound != null) { destroy_mushroom_sound.play (); } mushrooms[i].damage++; if (mushrooms[i].damage < 3) { g.clearRect (mushrooms[i].x - 16, mushrooms[i].y - 16, 32, 32); paint_mushroom_collision (g, mushrooms[i], 16); return; } Point p = new Point (mushrooms[i].x, mushrooms[i].y); g.clearRect (mushrooms[i].x - 16, mushrooms[i].y - 16, 32, 32); mushrooms[i].x = 0; mushrooms[i].y = 0; mushroom_count--; paint_mushroom_collision (g, p, 16); } void destroy_centipede (Graphics g, int i) { Point p = new Point (centipede[i].x, centipede[i].y); int j; increment_score (centipede_points); if (destroy_centipede_sound != null) { destroy_centipede_sound.play (); } g.clearRect (centipede[i].x - 8, centipede[i].y - 8, 16, 16); centipede[i].x = 0; centipede[i].y = 0; j = generate_mushroom (p.x, p.y); if (j != -1) { paint_mushroom (g, j); } for (j = 0; j < centipede.length; j++) { if (centipede[j].x != 0 && centipede[j].y != 0) { break; } } if (j == centipede.length) { new_level (); } paint_mushroom_collision (g, p, 8); } void destroy_spider (Graphics g, int i) { Point p = new Point (spiders[i].x, spiders[i].y); if (destroy_spider_sound != null) { destroy_spider_sound.play (); } increment_score (spider_points); g.clearRect (spiders[i].x - 16, spiders[i].y - 16, 32, 32); spiders[i].x = 0; spiders[i].y = 0; paint_mushroom_collision (g, p, 16); } void destroy_scorpion (Graphics g, int i) { Point p = new Point (scorpions[i].x, scorpions[i].y); if (destroy_scorpion_sound != null) { destroy_scorpion_sound.play (); } increment_score (scorpion_points); g.clearRect (scorpions[i].x - 16, scorpions[i].y - 16, 32, 32); scorpions[i].x = 0; scorpions[i].y = 0; paint_mushroom_collision (g, p, 16); } void destroy_beetle (Graphics g, int i) { Point p = new Point (beetles[i].x, beetles[i].y); if (destroy_beetle_sound != null) { destroy_beetle_sound.play (); } increment_score (beetle_points); g.clearRect (beetles[i].x - 16, beetles[i].y - 16, 32, 32); beetles[i].x = 0; beetles[i].y = 0; paint_mushroom_collision (g, p, 16); } void destroy_flea (Graphics g, int i) { Point p = new Point (fleas[i].x, fleas[i].y); if (destroy_flea_sound != null) { destroy_flea_sound.play (); } increment_score (flea_points); g.clearRect (fleas[i].x - 8, fleas[i].y - 8, 16, 16); fleas[i].x = 0; fleas[i].y = 0; paint_mushroom_collision (g, p, 8); } void destroy_player () { if (game_over) { return; } if (destroy_player_sound != null) { destroy_player_sound.play (); } if (need_reset) { return; } lives--; if (lives < 0) { lives = 0; game_over = true; } else { need_reset = true; expand_mushrooms = true; } update_lives = true; } boolean check_player_collision (Point p, int r) { boolean hit = collision (p, r, mouse_loc, 16); if (hit) { destroy_player (); update_player = true; } return hit; } int generate_mushroom (int x, int y) { int j; if (y > field_height - 16) { y = field_height - 16; } for (j = 0; j < mushrooms.length; j++) { if (mushrooms[j].x == 0 && mushrooms[j].y == 0) { mushrooms[j].x = x; mushrooms[j].y = y; mushrooms[j].damage = 0; mushroom_count++; return j; } } return -1; } void generate_mushrooms () { int i; int size = max_mushrooms + (centipede_length * 3); mushrooms = new Mushroom[size]; for (i = 0; i < max_mushrooms; i++) { mushrooms[i] = new Mushroom ((int)(Math.random () * screen_width), (int)(Math.random () * (field_height - 16))); } mushroom_count = max_mushrooms; for (; i < size; i++) { mushrooms[i] = new Mushroom (0, 0); } update_mushrooms = true; } void generate_centipede () { int i; int x, y, h; if (Math.random () > 0.50) { x = screen_width - 8; h = -1; } else { x = 8; h = 1; } centipede = new Centipede[centipede_length]; for (i = 0; i < centipede.length; i++) { if (i == 0) { centipede[i] = new Centipede (x, 8, h, 1); } else { centipede[i] = new Centipede (centipede[i-1].x + -(h*16), centipede[i-1].y, h, 1); } } } void generate_beetle () { int i; for (i = 0; i < max_beetles; i++) { if (beetles[i].x == 0 && beetles[i].y == 0) { if (Math.random () > 0.50) { beetles[i].hort_dir = 1; beetles[i].x = 8; } else { beetles[i].hort_dir = -1; beetles[i].x = screen_width - 8; } beetles[i].y = field_height/2 + (int)(Math.random () * (field_height/2 - 16)); break; } } } void generate_scorpion () { int i; for (i = 0; i < max_scorpions; i++) { if (scorpions[i].x == 0 && scorpions[i].y == 0) { if (Math.random () > 0.50) { scorpions[i].hort_dir = 1; scorpions[i].x = 16; } else { scorpions[i].hort_dir = -1; scorpions[i].x = screen_width - 16; } scorpions[i].y = 100; break; } } } void generate_spider () { int i; for (i = 0; i < max_spiders; i++) { if (spiders[i].x == 0 && spiders[i].y == 0) { if (Math.random () > 0.50) { spiders[i].x = 8; spiders[i].hort_dir = 1; } else { spiders[i].x = screen_width - 8; spiders[i].hort_dir = -1; } spiders[i].y = field_height/2 + (int)(Math.random () * (field_height/2)) - 16; spiders[i].vert_dir = 1; spiders[i].start_dir = spiders[i].hort_dir; break; } } } void generate_flea () { int i; for (i = 0; i < max_fleas; i++) { if (fleas[i].x == 0 && fleas[i].y == 0) { fleas[i].x = (int)(Math.random () * screen_width); fleas[i].y = 8; break; } } } /* Don't clear the screen; just call paint. */ public void update (Graphics g) { paint (g); } void paint_mushroom (Graphics g, int i) { boolean have_image = tracker.checkID (tracker_mushroom_id, true); if (have_image) { int r = 16 - (mushrooms[i].damage * 4); g.drawImage (mushroom_image, mushrooms[i].x - r, mushrooms[i].y - r, r * 2, r * 2, this); } else { Polygon p = new Polygon (); p.addPoint (mushrooms[i].x - 16, mushrooms[i].y + 16); p.addPoint (mushrooms[i].x, mushrooms[i].y - 16); p.addPoint (mushrooms[i].x + 16, mushrooms[i].y + 16); g.setColor (missing_image_color); g.fillPolygon (p); } } boolean paint_mushroom_collision (Graphics g, Point p, int r) { int i; boolean hit = false; for (i = 0; i < mushrooms.length; i++) { if (mushrooms[i].x == 0 && mushrooms[i].y == 0) { continue; } if (collision (p, r, mushrooms[i], 16)) { paint_mushroom (g, i); hit = true; } } return hit; } void paint_mushrooms (Graphics g) { int i; for (i = 0; i < mushrooms.length; i++) { if (mushrooms[i].x == 0 && mushrooms[i].y == 0) { continue; } paint_mushroom (g, i); } } void paint_mushrooms_expand (Graphics g) { int i; for (i = 0; i < mushrooms.length; i++) { if (mushrooms[i].x == 0 && mushrooms[i].y == 0) { continue; } if (mushrooms[i].damage > 0) { mushrooms[i].damage = 0; paint_mushroom (g, i); if (destroy_mushroom_sound != null) { destroy_mushroom_sound.play (); } } } } void paint_player (Graphics g) { if (!update_player && mouse.x == mouse_loc.x && mouse.y == mouse_loc.y) { return; } update_player = false; boolean have_image = tracker.checkID (tracker_player_id, true); g.clearRect (mouse.x - 16, mouse.y - 16, 32, 32); paint_mushroom_collision (g, mouse, 16); mouse.x = mouse_loc.x; mouse.y = mouse_loc.y; paint_mushroom_collision (g, mouse, 16); if (have_image) { if (game_over) { g.drawImage (dead_player_image, mouse.x - 16, mouse.y - 16, this); } else { g.drawImage (player_image, mouse.x - 16, mouse.y - 16, this); } } else { g.setColor (missing_image_color); g.fillOval (mouse.x - 16, mouse.y - 16, 32, 32); } } void paint_shots (Graphics g) { int i; int j; boolean have_image = tracker.checkID (tracker_shot_id, true); boolean hit; for (i = 0; i < shots.length; i++) { if (shots[i].x == 0 && shots[i].y == 0) { continue; } g.clearRect (shots[i].x - 8, shots[i].y - 8, 16, 16); hit = false; for (j = 0; !hit && j < centipede.length; j++) { if (collision (shots[i], 8, centipede[j], 8)) { hit = true; destroy_centipede (g, j); } } for (j = 0; !hit && j < max_spiders; j++) { if (collision (shots[i], 8, spiders[j], 16)) { hit = true; destroy_spider (g, j); } } for (j = 0; !hit && j < max_scorpions; j++) { if (collision (shots[i], 8, scorpions[j], 16)) { hit = true; destroy_scorpion (g, j); break; } } for (j = 0; !hit && j < max_beetles; j++) { if (collision (shots[i], 8, beetles[j], 16)) { hit = true; destroy_beetle (g, j); } } for (j = 0; !hit && j < max_fleas; j++) { if (collision (shots[i], 8, fleas[j], 16)) { hit = true; destroy_flea (g, j); } } for (j = 0; !hit && j < mushrooms.length; j++) { if (collision (shots[i], 8, mushrooms[j], 16)) { hit = true; destroy_mushroom (g, j); } } if (hit) { shots[i].x = 0; shots[i].y = 0; continue; } shots[i].y -= shot_speed; if (shots[i].y <= 0) { shots[i].x = 0; shots[i].y = 0; continue; } if (have_image) { g.drawImage (shot_image, shots[i].x - 8, shots[i].y - 8, this); } else { g.setColor (missing_image_color); g.fillOval (shots[i].x - 8, shots[i].y - 8, 16, 16); } } } void paint_centipede (Graphics g) { int i; boolean have_images = tracker.checkID (tracker_centipede_id, true); boolean hit; boolean update_vert; for (i = 0; i < centipede.length; i++) { if (centipede[i].x == 0 && centipede[i].y == 0) { continue; } g.clearRect (centipede[i].x - 8, centipede[i].y - 8, 16, 16); /* Use 0 radius to allow centipede to get closer to mushrooms */ hit = paint_mushroom_collision (g, centipede[i], 0); centipede[i].x += 8 * centipede[i].hort_dir; update_vert = false; if (hit) { centipede[i].hort_dir *= -1; centipede[i].x += 16 * centipede[i].hort_dir; //centipede[i].y += 16 * centipede[i].vert_dir; update_vert = true; } else if (centipede[i].hort_dir > 0 && centipede[i].x >= screen_width - 8) { centipede[i].hort_dir = -1; centipede[i].x = screen_width - 8; //centipede[i].y += 16 * centipede[i].vert_dir; update_vert = true; } else if (centipede[i].hort_dir < 0 && centipede[i].x <= 8) { centipede[i].x = 8; centipede[i].hort_dir = 1; //centipede[i].y += 16 * centipede[i].vert_dir; update_vert = true; } if (update_vert) { centipede[i].y += 16 * centipede[i].vert_dir; if (centipede[i].y < 8 || centipede[i].y > (field_height - 8)) { centipede[i].vert_dir *= -1; centipede[i].y += 32 * centipede[i].vert_dir; } } if (have_images) { /* head */ if (i == 0 || (centipede[i-1].x == 0 && centipede[i-1].y == 0)) { g.drawImage (centipede_images[0], centipede[i].x - 8, centipede[i].y - 8, this); } /* body */ else { g.drawImage (centipede_images[1], centipede[i].x - 8, centipede[i].y - 8, this); } } else { g.setColor (missing_image_color); g.fillOval (centipede[i].x - 8, centipede[i].y - 8, 16, 16); } check_player_collision (centipede[i], 8); } } void paint_beetles (Graphics g) { int i; boolean have_image = tracker.checkID (tracker_beetle_id, true); for (i = 0; i < max_beetles; i++) { if (beetles[i].x == 0 && beetles[i].y == 0) { continue; } g.clearRect (beetles[i].x - 8, beetles[i].y - 8, 16, 16); paint_mushroom_collision (g, beetles[i], 8); if (Math.random () > 0.75) { beetles[i].x += beetles[i].hort_dir * 32; } if (beetles[i].x < 0 || beetles[i].x > screen_width) { beetles[i].x = 0; beetles[i].y = 0; continue; } if (have_image) { if (beetles[i].hort_dir == 1) { g.drawImage (beetle_images[0], beetles[i].x - 8, beetles[i].y - 8, this); } else { g.drawImage (beetle_images[1], beetles[i].x - 8, beetles[i].y - 8, this); } } else { g.setColor (missing_image_color); g.fillOval (beetles[i].x - 8, beetles[i].y - 8, 16, 16); } check_player_collision (beetles[i], 8); } } void paint_scorpions (Graphics g) { int i; boolean have_image = tracker.checkID (tracker_scorpion_id, true); for (i = 0; i < max_scorpions; i++) { if (scorpions[i].x == 0 && scorpions[i].y == 0) { continue; } g.clearRect (scorpions[i].x - 16, scorpions[i].y - 16, 32, 32); paint_mushroom_collision (g, scorpions[i], 16); scorpions[i].x += scorpions[i].hort_dir * 32; if (scorpions[i].x < 0 || scorpions[i].x > screen_width) { scorpions[i].x = 0; scorpions[i].y = 0; continue; } if (have_image) { if (scorpions[i].hort_dir == 1) { g.drawImage (scorpion_images[0], scorpions[i].x - 16, scorpions[i].y - 16, this); } else { g.drawImage (scorpion_images[1], scorpions[i].x - 16, scorpions[i].y - 16, this); } } else { g.setColor (missing_image_color); g.fillOval (scorpions[i].x - 16, scorpions[i].y - 16, 32, 32); } check_player_collision (scorpions[i], 16); } } void paint_spiders (Graphics g) { int i; boolean have_image = tracker.checkID (tracker_spider_id, true); double chance = Math.random (); int speed = 16; for (i = 0; i < max_spiders; i++) { if (spiders[i].x == 0 && spiders[i].y == 0) { continue; } g.clearRect (spiders[i].x - 16, spiders[i].y - 16, 32, 32); paint_mushroom_collision (g, spiders[i], 16); if (spiders[i].y < field_height/2 || spiders[i].y > field_height - 16) { spiders[i].vert_dir *= -1; spiders[i].y += spiders[i].vert_dir * speed * 2; } else if (chance < 0.10) { spiders[i].hort_dir *= -1; spiders[i].x += spiders[i].hort_dir * speed; } else if (chance > 0.90) { spiders[i].vert_dir *= -1; spiders[i].y += spiders[i].vert_dir * speed; } else { spiders[i].x += spiders[i].hort_dir * speed; } if (spiders[i].x < 16 || spiders[i].x > screen_width - 16) { if (spiders[i].hort_dir == spiders[i].start_dir) { spiders[i].hort_dir *= -1; spiders[i].x += spiders[i].hort_dir * speed * 2; } else /* spider is gone */ { spiders[i].x = 0; spiders[i].y = 0; continue; } } if (have_image) { g.drawImage (spider_image, spiders[i].x - 16, spiders[i].y - 16, this); } else { g.setColor (missing_image_color); g.fillOval (spiders[i].x - 16, spiders[i].y - 16, 32, 32); } check_player_collision (spiders[i], 16); } } void paint_fleas (Graphics g) { int i; boolean have_image = tracker.checkID (tracker_flea_id, true); for (i = 0; i < max_fleas; i++) { if (fleas[i].x == 0 && fleas[i].y == 0) { continue; } g.clearRect (fleas[i].x - 8, fleas[i].y - 8, 16, 16); paint_mushroom_collision (g, fleas[i], 8); fleas[i].y += 16; if (fleas[i].y > field_height - 8) { fleas[i].x = 0; fleas[i].y = 0; continue; } if (Math.random () < 0.20) { int j = generate_mushroom (fleas[i].x, fleas[i].y); if (j != -1) { paint_mushroom (g, j); } } if (have_image) { g.drawImage (flea_image, fleas[i].x - 8, fleas[i].y - 8, this); } else { g.setColor (missing_image_color); g.fillOval (fleas[i].x - 8, fleas[i].y - 8, 16, 16); } check_player_collision (fleas[i], 8); } } void paint_string (Graphics g, String s) { int h = big_font_metrics.getHeight (); int w = big_font_metrics.stringWidth (s); g.setColor (Color.black); g.drawString (s, screen_width/2 - w/2, field_height/2); } void paint_game_over (Graphics g) { paint_string (g, "GAME OVER"); } void paint_paused (Graphics g) { paint_string (g, "PAUSED"); } void paint_score_and_level (Graphics g) { g.clearRect (0, field_height, screen_width/2, stats_height); g.setColor (Color.black); g.drawLine (0, field_height, screen_width, field_height); g.drawString ("Score: " + score + " Level: " + level, 0, field_height + big_font_metrics.getHeight ()); } void paint_lives (Graphics g) { int x, y; g.clearRect (screen_width/2, field_height, screen_width, stats_height); g.setColor (Color.black); g.drawLine (0, field_height, screen_width, field_height); String s = "" + lives; int w = big_font_metrics.stringWidth (s); g.setColor (Color.black); g.drawString (s, screen_width - w, field_height + big_font_metrics.getHeight ()); g.drawImage (lives > 0 ? player_image : dead_player_image, screen_width - w - 32, field_height, this); } /* Paint the screen. */ public void paint (Graphics g) { if (need_reset) { reset_game (); need_reset = false; } if (clear_screen) { g.clearRect (0, 0, screen_width, field_height + stats_height); clear_screen = false; } if (paused) { paint_paused (g); return; } if (update_mushrooms) { paint_mushrooms (g); update_mushrooms = false; } paint_shots (g); paint_centipede (g); paint_beetles (g); paint_scorpions (g); paint_fleas (g); paint_spiders (g); paint_player (g); if (update_score || update_level) { paint_score_and_level (g); update_score = update_level = false; } if (update_lives) { paint_lives (g); update_lives = false; } if (expand_mushrooms) { paint_mushrooms_expand (g); expand_mushrooms = false; } if (game_over) { paint_game_over (g); } } } /* Local variables: eval: (progn (make-local-variable 'compile-command) (setq compile-command (concat "javac " buffer-file-name))) End: */