/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "startrek/room.h"

namespace StarTrek {

#define OBJECT_ELASI_1 8
#define OBJECT_ELASI_2 9
#define OBJECT_ELASI_3 10
#define OBJECT_ELASI_4 11
#define OBJECT_12 12
#define OBJECT_13 13
#define OBJECT_14 14
#define OBJECT_15 15

#define GUARDSTAT_UP 0
#define GUARDSTAT_STUNNED 1
#define GUARDSTAT_DEAD 2
#define GUARDSTAT_SURRENDERED 4
#define GUARDSTAT_TIED 8

void Room::tug3Tick1() {
	playVoc("TUG3LOOP");

	_vm->_awayMission.disableWalking = true;
	loadActorAnim2(OBJECT_ELASI_1, "p1turn", 0xa4, 0x98, 0);
	loadActorAnim2(OBJECT_ELASI_2, "p2turn", 0xd1, 0x88, 0);
	loadActorAnim2(OBJECT_ELASI_3, "p3turn", 0xfb, 0xc4, 0);
	loadActorAnim2(OBJECT_ELASI_4, "p4turn", 0x5a, 0x9e, 0);
}

void Room::tug3Tick40() {
	loadActorAnim2(OBJECT_KIRK, "kdraws", -1, -1, 0); // Draw phaser
}

void Room::tug3LookAnywhere() {
	showText(TX_TUG3N007);
}

void Room::tug3ElasiSurrendered() {
	// BUGFIX: the original game had the condition below. However, this would cause
	// problems if you start shooting, then get them to surrender; if timed correctly,
	// they could shoot Kirk as he's beaming out and the mission is "successful". To
	// prevent that, the below condition is removed in ScummVM.
	/*
	if (_vm->_awayMission.tug.bridgeElasiDrewPhasers)
		return;
	*/

	// Also part of the bugfix (stop shooting)
	_vm->_awayMission.timers[0] = 0;

	_vm->_awayMission.tug.elasiSurrendered = true;
	loadActorAnim2(OBJECT_ELASI_1, "p1surr", -1, -1, 0);
	_vm->_awayMission.tug.bridgeElasi1Status = GUARDSTAT_SURRENDERED;

	if (_vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_UP) {
		loadActorAnim2(OBJECT_ELASI_2, "p2surr", -1, -1, 0);
		_vm->_awayMission.tug.bridgeElasi2Status = GUARDSTAT_SURRENDERED;
	}
	if (_vm->_awayMission.tug.bridgeElasi3Status == GUARDSTAT_UP) {
		loadActorAnim2(OBJECT_ELASI_3, "p3surr", -1, -1, 0);
		_vm->_awayMission.tug.bridgeElasi3Status = GUARDSTAT_SURRENDERED;
	}
	if (_vm->_awayMission.tug.bridgeElasi4Status == GUARDSTAT_UP) {
		loadActorAnim2(OBJECT_ELASI_4, "p4surr", -1, -1, 0);
		_vm->_awayMission.tug.bridgeElasi4Status = GUARDSTAT_SURRENDERED;
	}

	_vm->_awayMission.tug.missionScore += 4;
}

void Room::tug3UsePhaserAnywhere() {
	// Stub function to suppress "you can't do that" messages
}

void Room::tug3ElasiDrawPhasers() {
	if (_vm->_awayMission.tug.bridgeElasiDrewPhasers)
		return;

	_vm->_awayMission.tug.bridgeElasiDrewPhasers = true;

	// If brig guards are alive & untied, kill the hostages
	if (_vm->_awayMission.tug.guard1Status == 0 || _vm->_awayMission.tug.guard2Status == 0) {
		showText(TX_SPEAKER_ELASI_CLANSMAN, TX_TUG3L081);
		_vm->_awayMission.tug.missionScore = 0;
	}

	if (_vm->_awayMission.timers[0] == 0)
		_vm->_awayMission.timers[0] = 10;

	// Make all elasi draw their phasers
	if (_vm->_awayMission.tug.bridgeElasi1Status == 0)
		loadActorAnim2(OBJECT_ELASI_1, "p1draw", -1, -1, 0);
	if (_vm->_awayMission.tug.bridgeElasi2Status == 0)
		loadActorAnim2(OBJECT_ELASI_2, "p2draw", -1, -1, 0);
	if (_vm->_awayMission.tug.bridgeElasi3Status == 0)
		loadActorAnim2(OBJECT_ELASI_3, "p3draw", -1, -1, 0);
	if (_vm->_awayMission.tug.bridgeElasi4Status == 0)
		loadActorAnim2(OBJECT_ELASI_4, "p4draw", -1, -1, 0);
}

void Room::tug3UseStunPhaserOnElasi1() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi1Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_1, "p1stun", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem05", 5);
	_vm->_awayMission.tug.bridgeElasi1Status = GUARDSTAT_STUNNED;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseStunPhaserOnElasi2() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi2Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_2, "p2stun", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem06", 5);
	_vm->_awayMission.tug.bridgeElasi2Status = GUARDSTAT_STUNNED;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseStunPhaserOnElasi3() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi3Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_3, "p3stun", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem07", 5);
	_vm->_awayMission.tug.bridgeElasi3Status = GUARDSTAT_STUNNED;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseStunPhaserOnElasi4() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi4Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_4, "p4stun", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem04", 5);
	_vm->_awayMission.tug.bridgeElasi4Status = GUARDSTAT_STUNNED;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseKillPhaserOnElasi1() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi1Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_1, "p1Kill", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem25", 5);
	_vm->_awayMission.tug.bridgeElasi1Status = GUARDSTAT_DEAD;
	_vm->_awayMission.tug.missionScore -= 2;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseKillPhaserOnElasi2() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi2Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_2, "p2Kill", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem27", 5);
	_vm->_awayMission.tug.bridgeElasi2Status = GUARDSTAT_DEAD;
	_vm->_awayMission.tug.missionScore -= 2;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseKillPhaserOnElasi3() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi3Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_3, "p3Kill", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem26", 5);
	_vm->_awayMission.tug.bridgeElasi3Status = GUARDSTAT_DEAD;
	_vm->_awayMission.tug.missionScore -= 2;
	tug3ElasiDrawPhasers();
}

void Room::tug3UseKillPhaserOnElasi4() {
	if (_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] || _vm->_awayMission.tug.bridgeElasi4Status != GUARDSTAT_UP)
		return;
	loadActorAnim2(OBJECT_ELASI_4, "p4Kill", -1, -1, 12);
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem24", 5);
	_vm->_awayMission.tug.bridgeElasi4Status = GUARDSTAT_DEAD;
	_vm->_awayMission.tug.missionScore -= 2;
	tug3ElasiDrawPhasers();
}

void Room::tug3ElasiStunnedOrKilled() {
	if (_vm->_awayMission.tug.bridgeWinMethod == 1)
		return;
	if (_vm->_awayMission.tug.bridgeElasi1Status == GUARDSTAT_UP || _vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_UP
			|| _vm->_awayMission.tug.bridgeElasi3Status == GUARDSTAT_UP || _vm->_awayMission.tug.bridgeElasi4Status == GUARDSTAT_UP)
			return;

	// BUGFIX: if the ship is deorbiting, the mission isn't won yet.
	if (_vm->_awayMission.tug.orbitalDecayCounter != 0)
		return;

	_vm->_awayMission.tug.bridgeWinMethod = 1;
	tug3EndMission();
}

void Room::tug3TalkToElasi1() {
	if (_vm->_awayMission.tug.bridgeElasi1Status != GUARDSTAT_UP || _vm->_awayMission.tug.talkedToCereth)
		return;
	_vm->_awayMission.tug.talkedToCereth = true;

	const int choices[] = {
		TX_SPEAKER_KIRK,
		TX_TUG3_004,
		TX_TUG3_003,
		TX_TUG3_002,
		TX_BLANK
	};
	int choice = showText(choices);

	switch (choice) {
	case 0: // They surrender
		showText(TX_SPEAKER_ELASI_CERETH, TX_TUG3L084);
		_vm->_awayMission.tug.bridgeElasi1Status = GUARDSTAT_SURRENDERED;
		loadActorAnim2(OBJECT_ELASI_1, "p1surr", -1, -1, 0);
		tug3ElasiSurrendered();
		_vm->_awayMission.tug.bridgeWinMethod = 2;
		_vm->_awayMission.tug.missionScore += 8;
		tug3EndMission();
		break;

	case 1: // Cereth shoots console, doesn't surrender
		_vm->_awayMission.disableInput = true;
		showText(TX_SPEAKER_ELASI_CERETH, TX_TUG3_F27);
		loadActorAnim2(OBJECT_ELASI_1, "p1draw", -1, -1, 3);
		break;

	case 2: // Cereth shoots console and surrenders
		_vm->_awayMission.disableInput = true;
		showText(TX_SPEAKER_ELASI_CERETH, TX_TUG3L083);
		loadActorAnim2(OBJECT_ELASI_1, "p1draw", -1, -1, 5);

		// BUGFIX: they're going to surrender, so stop the firefight.
		_vm->_awayMission.timers[0] = 0;
		break;
	}
}

void Room::tug3Elasi1DrewPhaser() {
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem41", 13);
	playSoundEffectIndex(SND_BLANK_16);
	loadActorAnim2(OBJECT_12, "sparks", 0xa0, 0xad, 4);
}

void Room::tug3Elasi1ShotConsole() {
	tug3ElasiDrawPhasers();
	_vm->_awayMission.disableInput = false;
	_vm->_awayMission.tug.bridgeWinMethod = 3;
	_vm->_awayMission.timers[1] = 10;
}

void Room::tug3Elasi1DrewPhaser2() {
	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks("t3beem41", 13);
	loadActorAnim2(OBJECT_12, "sparks", 0xa0, 0xad, 6);
}

void Room::tug3Elasi1ShotConsoleAndSurrenders() {
	showText(TX_SPEAKER_ELASI_CERETH, TX_TUG3L080);
	tug3ElasiSurrendered();
	_vm->_awayMission.disableInput = false;
	_vm->_awayMission.tug.bridgeWinMethod = 3;
	_vm->_awayMission.timers[1] = 10;
}

void Room::tug3LookAtMccoy() {
	showText(TX_TUG3N000);
}

void Room::tug3LookAtSpock() {
	showText(TX_TUG3N002);
}

void Room::tug3LookAtRedshirt() {
	showText(TX_TUG3N001);
}

void Room::tug3LookAtElasi1() {
	// BUGFIX: there were two implementations of this function; the first was the same as
	// the other 3 elasi, the second was specific to the captain. The second was never
	// called in the original game, but it's used here instead for more variety.
	// The function itself is changed by checking both if he's stunned or if he's dead,
	// instead of just checking if he's stunned.

	if (_vm->_awayMission.tug.bridgeElasi1Status == GUARDSTAT_STUNNED || _vm->_awayMission.tug.bridgeElasi1Status == GUARDSTAT_DEAD)
		showText(TX_TUG3N003);
	else
		showText(TX_TUG3N008);
}

void Room::tug3LookAtElasi2() {
	// BUGFIX: also check if stunned. They can't "glare at the crewmembers" if they're
	// unconscious. (applies to below functions too.)
	if (_vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_DEAD || _vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_STUNNED)
		showText(TX_TUG3N004);
	else
		showText(TX_TUG3N005);
}

void Room::tug3LookAtElasi3() {
	if (_vm->_awayMission.tug.bridgeElasi3Status == GUARDSTAT_DEAD || _vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_STUNNED)
		showText(TX_TUG3N004);
	else
		showText(TX_TUG3N005);
}

void Room::tug3LookAtElasi4() {
	if (_vm->_awayMission.tug.bridgeElasi4Status == GUARDSTAT_DEAD || _vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_STUNNED)
		showText(TX_TUG3N004);
	else
		showText(TX_TUG3N005);
}

void Room::tug3TalkToMccoy() {
	if (_vm->_awayMission.tug.orbitalDecayCounter != 0 || _vm->_awayMission.tug.bridgeElasi1Status != GUARDSTAT_UP) {
		if (_vm->_awayMission.tug.orbitalDecayCounter >= 10) {
			if (_vm->_awayMission.tug.orbitalDecayCounter < 16)
				showText(TX_SPEAKER_MCCOY, TX_TUG3_011);
		}
		else if (_vm->_awayMission.tug.orbitalDecayCounter != 0) {
			// BUGFIX: original game displays a blank textbox. An appropriate audio file
			// exists, but the corresponding text was written from scratch for ScummVM.
			// TODO: check if original floppy version has text for this.
			showText(TX_SPEAKER_MCCOY, TX_TUG3_012);
		}
	}
	else
		showText(TX_SPEAKER_MCCOY, TX_TUG3_013);
}

void Room::tug3TalkToSpock() {
	if (_vm->_awayMission.tug.orbitalDecayCounter != 0) {
		if (_vm->_awayMission.tug.orbitalDecayCounter >= 10) {
			if (_vm->_awayMission.tug.orbitalDecayCounter < 16)
				showText(TX_SPEAKER_SPOCK, TX_TUG3_008);
		}
		else
			showText(TX_SPEAKER_SPOCK, TX_TUG3_009);
	}
}

void Room::tug3TalkToRedshirt() {
	showText(TX_SPEAKER_CHRISTENSEN, TX_TUG3L003);
}

void Room::tug3UseCommunicator() {
	if (_vm->_awayMission.tug.orbitalDecayCounter == 0)
		return;

	if (_vm->_awayMission.tug.orbitalDecayCounter < 10) {
		showText(TX_SPEAKER_KIRK, TX_TUG3_007);
		showText(TX_SPEAKER_SULU, TX_TUG3_015);
		showText(TX_SPEAKER_SHIPS_COMPUTER, TX_COMPA180);
		_vm->_awayMission.timers[1] = 0;

		// BUGFIX: if still fighting the elasi, the mission isn't done yet.
		_vm->_awayMission.tug.orbitalDecayCounter = 0;
		if (!_vm->_awayMission.tug.elasiSurrendered &&
				(_vm->_awayMission.tug.bridgeElasi1Status == GUARDSTAT_UP
				 || _vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_UP
				 || _vm->_awayMission.tug.bridgeElasi3Status == GUARDSTAT_UP
				 || _vm->_awayMission.tug.bridgeElasi4Status == GUARDSTAT_UP))
			return;

		tug3EndMission();
	}
	else {
		if (_vm->_awayMission.tug.orbitalDecayCounter < 16) {
			showText(TX_SPEAKER_KIRK, TX_TUG3_006);
			showText(TX_SPEAKER_SCOTT, TX_TUG3_S07);

			playMidiMusicTracks(-1, -1);

			_vm->_awayMission.disableInput = true;
			if (_vm->_awayMission.tug.missionScore < 0)
				_vm->_awayMission.tug.missionScore = 0;
			endMission(_vm->_awayMission.tug.missionScore, _vm->_awayMission.tug.field2b, _vm->_awayMission.tug.field2d);
		}
	}
}

// One of the elasi shoots one of the crewmen
void Room::tug3Timer0Expired() {
	const char *beamAnims[][4] = {
		{ "t3beem33", "t3beem35", "t3beem34", "t3beem32" },
		{ "t3beem37", "t3beem39", "t3beem38", "t3beem36" },
		{ "t3beem29", "t3beem31", "t3beem30", "t3beem28" },
	};

	int elasiShooter, elasiTarget;

	if (_vm->_awayMission.tug.bridgeElasi2Status == GUARDSTAT_UP)
		elasiShooter = 0;
	else if (_vm->_awayMission.tug.bridgeElasi3Status == GUARDSTAT_UP)
		elasiShooter = 1;
	else if (_vm->_awayMission.tug.bridgeElasi4Status == GUARDSTAT_UP)
		elasiShooter = 2;
	else
		return;

	if (!_vm->_awayMission.tug.crewmanKilled[OBJECT_REDSHIRT]) {
		_vm->_awayMission.tug.crewmanKilled[OBJECT_REDSHIRT] = 2;
		_vm->_awayMission.redshirtDead = true;
		loadActorAnim2(OBJECT_REDSHIRT, "rkills", -1, -1, 0);
		elasiTarget = OBJECT_REDSHIRT;
	}
	else if (!_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK]) {
		_vm->_awayMission.tug.crewmanKilled[OBJECT_KIRK] = 2;
		_vm->_awayMission.disableInput = true;
		loadActorAnim2(OBJECT_KIRK, "kkills", -1, -1, 0);
		elasiTarget = OBJECT_KIRK;
	}
	else if (!_vm->_awayMission.tug.crewmanKilled[OBJECT_SPOCK]) {
		_vm->_awayMission.tug.crewmanKilled[OBJECT_SPOCK] = 2;
		loadActorAnim2(OBJECT_SPOCK, "skills", -1, -1, 0);
		elasiTarget = OBJECT_SPOCK;
	}
	else if (!_vm->_awayMission.tug.crewmanKilled[OBJECT_MCCOY]) {
		_vm->_awayMission.tug.crewmanKilled[OBJECT_MCCOY] = 2;
		loadActorAnim2(OBJECT_MCCOY, "mkills", -1, -1, 13);
		elasiTarget = OBJECT_MCCOY;
	}
	else
		return;

	playSoundEffectIndex(SND_PHASSHOT);
	showBitmapFor5Ticks(beamAnims[elasiShooter][elasiTarget], 5);
	_vm->_awayMission.timers[0] = 50;
}

void Room::tug3AllCrewmenDead() {
	playMidiMusicTracks(2, -1);
	showGameOverMenu();
}

// "Orbital decay" countdown timer
void Room::tug3Timer1Expired() {
	if (_vm->_awayMission.tug.orbitalDecayCounter < 10) { // Decay still preventable
		showText(TX_SPEAKER_SHIPS_COMPUTER, TX_COMPU182);
		_vm->_awayMission.timers[1] = 100;
		_vm->_awayMission.tug.orbitalDecayCounter++;
	}
	else if (_vm->_awayMission.tug.orbitalDecayCounter < 16) { // Decay now unavoidable
		showText(TX_SPEAKER_SHIPS_COMPUTER, TX_COMPU181);
		_vm->_awayMission.timers[1] = 100;
		_vm->_awayMission.tug.orbitalDecayCounter++;
	}
	else { // Game over
		showText(TX_TUG3N006);
		showGameOverMenu();
	}
}

void Room::tug3EndMission() {
	playMidiMusicTracks(28, -1);
	showText(TX_SPEAKER_KIRK, TX_TUG3_001);
	playSoundEffectIndex(SND_TRANSMAT);
	loadActorAnim2(OBJECT_13, "rteleb", 0x14, 0xa0, 7);
	loadActorAnim2(OBJECT_14, "rteleb", 0x118, 0xa0, 0);
	loadActorAnim2(OBJECT_15, "rteleb", 0x96, 0xbe, 0);
}

void Room::tug3SecurityTeamBeamedIn() {
	loadActorAnim2(OBJECT_13, "rdrawe", -1, -1, 8);
	loadActorAnim2(OBJECT_14, "rdraws", -1, -1, 9);
	loadActorAnim2(OBJECT_15, "rfiren", -1, -1, 10);

	showText(TX_SPEAKER_KIRK, TX_TUG3_005);
	showText(TX_SPEAKER_SCOTT, TX_TUG3_S08);

	playMidiMusicTracks(-1, -1);
	_vm->_awayMission.disableInput = true;
	if (_vm->_awayMission.tug.missionScore < 0)
		_vm->_awayMission.tug.missionScore = 0;
	endMission(_vm->_awayMission.tug.missionScore, _vm->_awayMission.tug.field2b, _vm->_awayMission.tug.field2d);
}

}