/*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 "game.h"void newGame(){	currentGame.system = 0;	currentGame.area = 0;	currentGame.sfxVolume = 0;	currentGame.musicVolume = 0;	if (!engine.useAudio)	{		currentGame.useSound = 0;		currentGame.useMusic = 0;	}	currentGame.autoSaveSlot = -1;	currentGame.cash = 0;	currentGame.cashEarned = 0;	currentGame.shots = 0;	currentGame.hits = 0;	currentGame.accuracy = 0;	currentGame.totalKills = currentGame.wingMate1Kills = currentGame.wingMate2Kills = 0;	currentGame.totalOtherKills = 0;	currentGame.hasWingMate1 = currentGame.hasWingMate2 = 0;	currentGame.wingMate1Ejects = currentGame.wingMate2Ejects = 0;	currentGame.secondaryMissions = currentGame.secondaryMissionsCompleted = 0;	currentGame.shieldPickups = currentGame.rocketPickups = currentGame.cellPickups = 0;	currentGame.powerups = currentGame.minesKilled = currentGame.cargoPickups = 0;	currentGame.slavesRescued = 0;	currentGame.experimentalShield = 1000;	currentGame.timeTaken = 0;	currentGame.stationedPlanet = -1;	currentGame.destinationPlanet = -1;	for (int i = 0 ; i < 10 ; i++)		currentGame.missionCompleted[i] = 0;	currentGame.distanceCovered = 0;	currentGame.maxPlasmaRate = 13;	currentGame.maxPlasmaOutput = 2;	currentGame.maxPlasmaDamage = 2;	currentGame.maxPlasmaAmmo = 100;	currentGame.maxRocketAmmo = 10;	currentGame.shieldUnits = 1;	player.maxShield = 25;	player.shield = 25;	player.ammo[0] = 0;	player.ammo[1] = 5;	player.weaponType[0] = W_PLAYER_WEAPON;	player.weaponType[1] = W_ROCKETS;	initWeapons();	initMissions();	initPlanetMissions(currentGame.system);}int mainGameLoop(){	Uint32 then, now, frames;	resetLists();	setMission(currentGame.area);	missionBriefScreen();	initCargo();	initPlayer();	initAliens();	clearInfoLines();	loadScriptEvents();	engine.ssx = 0;	engine.ssy = 0;	engine.done = 0;	frames = 0;	engine.counter = (SDL_GetTicks() + 1000);	engine.counter2 = (SDL_GetTicks() + 1000);	engine.missionCompleteTimer = 0;	engine.musicVolume = 100;	int rtn = 0;	unsigned long frameLimit = SDL_GetTicks();	int allowableAliens = 999999999;	for (int i = 0 ; i < 3 ; i++)	{		if ((currentMission.primaryType[i] == M_DESTROY_TARGET_TYPE) && (currentMission.target1[i] == CD_ANY))			allowableAliens = currentMission.targetValue1[i];		if (currentMission.primaryType[i] == M_DESTROY_ALL_TARGETS)			allowableAliens = 999999999;	}	for (int i = 0 ; i < MAX_ALIENS ; i++)	{		if ((enemy[i].active) && (enemy[i].flags & FL_WEAPCO))		{			allowableAliens--;		}	}	then = SDL_GetTicks();	graphics.drawBackGround();	graphics.flushBuffer();	// Default to no aliens dead...	engine.allAliensDead = 0;	engine.keyState[SDLK_LCTRL] = engine.keyState[SDLK_RCTRL] = engine.keyState[SDLK_SPACE] = 0;	flushInput();	while (engine.done != 1)	{		++frames;		graphics.updateScreen();		if ((allMissionsCompleted()) && (engine.missionCompleteTimer == 0))		{			engine.missionCompleteTimer = SDL_GetTicks() + 4000;		}		if ((missionFailed()) && (engine.missionCompleteTimer == 0))		{			if (currentGame.area != 5)				engine.missionCompleteTimer = SDL_GetTicks() + 4000;		}		if (engine.missionCompleteTimer != 0)		{			engine.gameSection = SECTION_INTERMISSION;			if (player.shield > 0)			{				if (SDL_GetTicks() >= engine.missionCompleteTimer)				{					if ((!missionFailed()) && (currentGame.area != 26))					{						leaveSector();						if ((engine.done == 2) && (currentGame.area != 10) && (currentGame.area != 15))						{							if ((enemy[FR_PHOEBE].shield > 0) && (currentGame.area != 25))							{								enemy[FR_PHOEBE].x = player.x - 40;								enemy[FR_PHOEBE].y = player.y - 35;								enemy[FR_PHOEBE].face = 0;							}							if ((enemy[FR_URSULA].shield > 0) && (currentGame.area != 25))							{								enemy[FR_URSULA].x = player.x - 40;								enemy[FR_URSULA].y = player.y + 45;								enemy[FR_URSULA].face = 0;							}							if ((currentGame.area == 9) || (currentGame.area == 17))							{								enemy[FR_SID].x = player.x - 100;								enemy[FR_SID].y = player.y;								enemy[FR_SID].face = 0;							}						}					}					else if ((currentGame.area == 26) && (engine.musicVolume > 0))					{						Math::limitFloat(&(engine.musicVolume -= 0.2), 0, 100);						Mix_VolumeMusic((int)engine.musicVolume);					}					else					{						engine.done = 1;					}				}				else				{					getPlayerInput();				}			}			else			{				Math::limitFloat(&(engine.musicVolume -= 0.2), 0, 100);				Mix_VolumeMusic((int)engine.musicVolume);				if (SDL_GetTicks() >= engine.missionCompleteTimer)				{					engine.done = 1;				}			}		}		else		{			getPlayerInput();		}		graphics.unBuffer();		doStarfield();		doCollectables();		doBullets();		doAliens();		doPlayer();  		doCargo();  		doDebris();		doExplosions();		doInfo();		Math::wrapChar(&(--engine.eventTimer), 0, 60);		while (engine.paused)		{			engine.done = checkPauseRequest();			then = SDL_GetTicks();			frames = 0;			graphics.updateScreen();		}		if ((currentGame.area == 24) && (engine.addAliens > -1))		{			if ((rand() % 10) == 0)				addCollectable(Math::rrand(800, 100), player.y, P_MINE, 25, 180 + rand() % 60);		}		if (engine.addAliens > -1)		{   		Math::wrapInt(&(--engine.addAliens), 0, currentMission.addAliens);			if ((engine.addAliens == 0) && (allowableAliens > 0))			{				allowableAliens -= addAlien();			}		}		if ((player.shield <= 0) && (engine.missionCompleteTimer == 0))			engine.missionCompleteTimer = SDL_GetTicks() + 7000;		// specific to Boss 1		if ((currentGame.area == 5) && (enemy[WC_BOSS].flags & FL_ESCAPED))		{			playSound(SFX_DEATH);			graphics.clearScreen(graphics.white);			graphics.updateScreen();			for (int i = 0 ; i < 300 ; i++)			{				SDL_Delay(10);				if ((rand() % 25) == 0)					playSound(SFX_EXPLOSION);			}			SDL_Delay(1000);			break;		}		// (Attempt to) Limit us to 60 frame a second		while (SDL_GetTicks() < (frameLimit + 16))		{			// Do nothing. If we were to insert an SDL_Delay(1) in here			// then we would actually lose around 10 frames per second!!		}		frameLimit = SDL_GetTicks();	}	graphics.flushBuffer();	now = SDL_GetTicks();	if ( now > then )	{		//printf("Mission %d: %2.2f frames per second\n", currentGame.area, ((double)frames*1000)/(now-then));	}	if ((player.shield > 0) && (!missionFailed()))	{		if (currentGame.area < 26)			missionFinishedScreen();		switch (currentGame.area)		{			case 5:				doCutscene(1);				doCutscene(2);				break;			case 7:				doCutscene(3);				break;			case 11:				doCutscene(4);				break;			case 13:				doCutscene(5);				break;			case 18:				doCutscene(6);				break;			case 26:				doCredits();				break;		}				if (currentGame.area < 26)		{			updateSystemStatus();			if (currentGame.autoSaveSlot > -1)				saveGame(currentGame.autoSaveSlot + 1);		}		rtn = 1;				if (currentGame.area == 26)			rtn = 0;	}	else	{		gameover();		rtn = 0;	}	return rtn;}