/*Copyright (C) 2003 Parallel RealitiesThis program is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; either version 2of 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 ofMERCHANTABILITY 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 Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.*/#include <stdlib.h>#include <string.h>#include <math.h>#include "SDL/SDL.h"#include "SDL/SDL_image.h"#include "SDL/SDL_mixer.h"#include "defs.h"#include "structs.h"#include "classes.h"extern void setEnemyAI(object *theEnemy);extern void setKlineAI(object *theEnemy);extern void fireBullet(object *attacker, int weaponType);extern void addExplosion(float x, float y, int type);extern void addEngine(object *craft);extern void fireRay(object *attacker);extern void addDebris(int x, int y, int amount);extern void playSound(int sid);extern int locateDataInPak(char *file, signed char required);extern object *addCargo(object *owner, int cargoType);extern void addCollectable(float x, float y, int type, int value, int life);extern void updateMissionRequirements(int type, int id, int value);extern void setInfoLine(char *in, int color);extern void addBullet(object *theWeapon, object *attacker, int y, int dy);extern void showErrorAndExit(int errorId, char *name);extern globalEngineVariables engine;extern devVariables dev;extern Game currentGame;extern object player;extern object enemy[MAX_ALIENS];extern Graphics graphics;extern mission currentMission;extern object weapon[MAX_WEAPONS];object defEnemy[MAX_DEFALIENS]; // A predefined enemy