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Diffstat (limited to 'engines/gnap/scenes/scene52.cpp')
| -rw-r--r-- | engines/gnap/scenes/scene52.cpp | 907 |
1 files changed, 907 insertions, 0 deletions
diff --git a/engines/gnap/scenes/scene52.cpp b/engines/gnap/scenes/scene52.cpp new file mode 100644 index 0000000000..62cc2f3728 --- /dev/null +++ b/engines/gnap/scenes/scene52.cpp @@ -0,0 +1,907 @@ +/* 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 "gnap/gnap.h" +#include "gnap/gamesys.h" +#include "gnap/resource.h" + +namespace Gnap { + +int GnapEngine::scene52_init() { + scene52_initAnims(); + return 0x2B; +} + +void GnapEngine::scene52_updateHotspots() { + _hotspotsCount = 0; +} + +void GnapEngine::scene52_update() { + + for (int rowNum = 0; rowNum < 7; ++rowNum) { + gameUpdateTick(); + if (_gameSys->getAnimationStatus(_s52_alienRowAnims[rowNum]) == 2) { + scene52_updateAlienRow(rowNum); + rowNum = 0; + } + } + + if (_s52_liveAlienRows == 0 && !_s52_alienSingle) { + _s52_alienWave = false; + playSound(48, 0); + ++_s52_alienCounter; + if (_s52_alienCounter != 3) { + _timers[0] = 50; + _timers[2] = 100; + _s52_alienRowDownCtr = 0; + _s52_alienSingle = true; + } + } + + if (_s52_alienSingle && !_timers[0]) { + scene52_initAliens(); + _s52_alienSingle = false; + _timers[2] = 5; + _s52_alienWave = true; + } + + if ((_s52_alienRowDownCtr || _s52_liveAlienRows == 0) && !_s52_alienSingle) { + scene52_moveDownAlienRow(); + _s52_alienRowDownCtr = 0; + } + + if (isKeyStatus1(Common::KEYCODE_UP) || isKeyStatus1(Common::KEYCODE_SPACE)) { + clearKeyStatus1(Common::KEYCODE_SPACE); + clearKeyStatus1(Common::KEYCODE_UP); + if (!_s52_aliensCount) + scene52_fireShipCannon(_s52_shipPosX); + } + + if (_s52_shipCannonFiring) + scene52_updateShipCannon(); + + scene52_fireAlienCannon(); + scene52_updateAlienCannons(); + + if (_s52_aliensCount == 1) { + _s52_alienWave = false; + _timers[3] = 20; + _timers[2] = 100; + ++_s52_aliensCount; + } + + if (_s52_aliensCount && !_timers[3]) { + scene52_updateAliens(); + scene52_loseShip(); + if (_s52_shipsLeft != 0) { + _timers[3] = 40; + while (_timers[3]) { + scene52_updateAlienCannons(); + if (_s52_shipCannonFiring) + scene52_updateShipCannon(); + gameUpdateTick(); + } + scene52_initAliens(); + _s52_shipPosX = (800 - _s52_shipMidX) / 2; + _gameSys->setAnimation(_s52_nextUfoSequenceId, 256, 7); + _gameSys->insertSequence(_s52_nextUfoSequenceId, 256, 0, 0, kSeqNone, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + _s52_ufoSequenceId = _s52_nextUfoSequenceId; + _timers[2] = 5; + _s52_alienWave = true; + } else { + _sceneDone = true; + } + } + + if (_timers[1] || scene52_getFreeShipCannon() == -1) { + _s52_nextUfoSequenceId = 34; + if (_s52_ufoSequenceId != 34) + _s52_shipFlag = true; + } else { + _s52_nextUfoSequenceId = 34; + if (_s52_ufoSequenceId != 34) + _s52_shipFlag = true; + } + + if (_s52_shipFlag) { + if (_gameSys->getAnimationStatus(7) == 2) { + _gameSys->setAnimation(_s52_nextUfoSequenceId, 256, 7); + _gameSys->insertSequence(_s52_nextUfoSequenceId, 256, _s52_ufoSequenceId, 256, kSeqSyncWait, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + _s52_ufoSequenceId = _s52_nextUfoSequenceId; + } + _s52_shipFlag = false; + } + + if (_s52_alienWave && !_timers[0]) { + scene52_playSound(); + int v0 = _s52_alienSpeed; + if (_s52_alienSpeed >= 10) + v0 = 10; + int v1 = v0; + if (v0 < 2) + v1 = 2; + _timers[0] = v1; + } +} + +void GnapEngine::scene52_initShipCannon(int bottomY) { + _s52_shipCannonFired = 0; + _s52_shipCannonWidth = MAX(_gameSys->getSpriteWidthById(14), _gameSys->getSpriteWidthById(16)); + _s52_shipCannonHeight = MAX(_gameSys->getSpriteHeightById(14), _gameSys->getSpriteHeightById(16)); + _s52_shipCannonTopY = bottomY - _s52_shipCannonHeight; + _s52_shipCannonFiring = 0; +} + +void GnapEngine::scene52_initAlienCannons() { + for (int i = 0; i < 3; ++i) { + _s52_alienCannonIds[i] = 0; + _s52_alienCannonFired[i] = 0; + } + _s52_alienCannonSequenceIds[0] = 30; + _s52_alienCannonSequenceIds[1] = 31; + _s52_alienCannonSequenceIds[2] = 32; +} + +void GnapEngine::scene52_fireShipCannon(int posX) { + + if (_timers[1]) + return; + + int cannonNum = scene52_getFreeShipCannon(); + if (cannonNum != -1) { + _s52_shipCannonPosX = _s52_shipMidX / 2 + posX - _s52_shipCannonWidth / 2; + _s52_shipCannonPosY = _s52_shipCannonTopY; + _gameSys->setAnimation(0x23, cannonNum + 256, cannonNum + 8); + _gameSys->insertSequence(0x23, cannonNum + 256, 0, 0, kSeqNone, 0, _s52_shipCannonPosX, _s52_shipCannonPosY); + playSound(0x2D, 0); + if (scene52_shipCannonHitShield(cannonNum)) { + _gameSys->setAnimation(0, 0, cannonNum + 8); + _gameSys->removeSequence(0x23, cannonNum + 256, 1); + } else { + _s52_shipCannonFired = 1; + _s52_shipCannonPosY -= 13; + _s52_shipCannonFiring = 1; + } + _timers[1] = 5; + } + +} + +void GnapEngine::scene52_fireAlienCannon() { + + if (_timers[2]) + return; + + int cannonNum = scene52_getFreeAlienCannon(); + if (cannonNum != -1) { + int alienX1 = _s52_alienLeftX + _s52_alienRowXOfs[0]; + int alienX2 = _s52_alienLeftX + _s52_alienRowXOfs[0] + 5 * _s52_alienWidth - (_s52_alienWidth / 2 - 15); + _s52_alienCannonPosX[cannonNum] = getRandom(alienX2 - alienX1) + alienX1; + _s52_alienCannonPosY[cannonNum] = 104; + _s52_alienCannonFired[cannonNum] = 1; + _gameSys->setAnimation(_s52_alienCannonSequenceIds[cannonNum], _s52_alienCannonIds[cannonNum] + 256, cannonNum + 9); + _gameSys->insertSequence(_s52_alienCannonSequenceIds[cannonNum], _s52_alienCannonIds[cannonNum] + 256, 0, 0, + kSeqNone, 0, _s52_alienCannonPosX[cannonNum], _s52_alienCannonPosY[cannonNum]); + _s52_alienCannonPosY[cannonNum] -= 13; + _timers[2] = 5; + } + +} + +int GnapEngine::scene52_getFreeShipCannon() { + if (!_s52_shipCannonFired) + return 0; + return -1; +} + +int GnapEngine::scene52_getFreeAlienCannon() { + for (int i = 0; i < 3; ++i) + if (!_s52_alienCannonFired[i]) + return i; + return -1; +} + +void GnapEngine::scene52_updateShipCannon() { + if (_s52_shipCannonFired && _gameSys->getAnimationStatus(8) == 2) { + _s52_shipCannonPosY -= 13; + if (_s52_shipCannonPosY - 13 >= 135) { + if (scene52_updateHitAlien()) { + _gameSys->setAnimation(0, 0, 8); + _gameSys->removeSequence(35, 256, 1); + _s52_shipCannonFired = 0; + scene52_drawScore(_s52_gameScore); + } else { + _gameSys->setAnimation(35, 256, 8); + _gameSys->insertSequence(35, 256, 35, 256, kSeqSyncWait, 0, _s52_shipCannonPosX, _s52_shipCannonPosY); + _s52_shipCannonPosY -= 13; + } + } else { + _gameSys->setAnimation(0, 0, 8); + _gameSys->removeSequence(35, 256, 1); + _s52_shipCannonFired = 0; + } + } +} + +void GnapEngine::scene52_updateAlienCannons() { + for (int i = 0; i < 3; ++i) { + if (_s52_alienCannonFired[i] && _gameSys->getAnimationStatus(i + 9) == 2) { + _s52_alienCannonPosY[i] += 13; + if (_s52_shipCannonHeight + _s52_alienCannonPosY[i] + 13 <= 550) { + if (scene52_alienCannonHitShip(i)) { + _gameSys->setAnimation(0, 0, i + 9); + _s52_alienCannonFired[i] = 0; + scene52_shipExplode(); + } else if (scene52_alienCannonHitShield(i)) { + _s52_alienCannonFired[i] = 0; + } else { + _gameSys->insertSequence(_s52_alienCannonSequenceIds[i], 1 - _s52_alienCannonIds[i] + 256, 0, 0, + kSeqNone, 0, _s52_alienCannonPosX[i], _s52_alienCannonPosY[i]); + _gameSys->setAnimation(_s52_alienCannonSequenceIds[i], 1 - _s52_alienCannonIds[i] + 256, i + 9); + _s52_alienCannonIds[i] = 1 - _s52_alienCannonIds[i]; + _s52_alienCannonPosY[i] += 13; + } + } else { + _gameSys->setAnimation(0, 0, i + 9); + _s52_alienCannonFired[i] = 0; + } + } + } +} + +void GnapEngine::scene52_initAliens() { + + if (!_s52_aliensInitialized) { + scene52_initAlienSize(); + _s52_aliensInitialized = true; + } + + _s52_liveAlienRows = 0; + _s52_alienSpeed = 0; + _s52_bottomAlienFlag = false; + _s52_aliensCount = 0; + _s52_alienSingle = false; + _s52_alienRowDownCtr = 0; + + scene52_initShields(); + + _s52_alienRowKind[0] = -1; + _s52_alienRowKind[1] = -1; + _s52_alienRowKind[2] = -1; + _s52_alienRowKind[3] = -1; + _s52_alienRowKind[4] = getRandom(2) != 0 ? 24 : 27; + _s52_alienRowKind[5] = getRandom(2) != 0 ? 25 : 28; + _s52_alienRowKind[6] = getRandom(2) != 0 ? 26 : 29; + + for (int i = 0; i < 7; ++i) { + _s52_alienRowAnims[i] = i; + _s52_alienRowXOfs[i] = 0; + scene52_initAlienRowKind(i, _s52_alienRowKind[i]); + scene52_insertAlienRow(i); + } + +} + +void GnapEngine::scene52_initAlienRowKind(int rowNum, int alienKind) { + for (int i = 0; i < 5; ++i) + _s52_items[rowNum][i] = alienKind; +} + +void GnapEngine::scene52_insertAlienRow(int rowNum) { + if (_s52_alienRowKind[rowNum] >= 0) { + scene52_insertAlienRowAliens(rowNum); + _s52_alienRowIds[rowNum] = 256; + _gameSys->setAnimation(_s52_alienRowKind[rowNum], _s52_alienRowIds[rowNum], _s52_alienRowAnims[rowNum]); + ++_s52_liveAlienRows; + } +} + +void GnapEngine::scene52_insertAlienRowAliens(int rowNum) { + int xOffs = _s52_alienLeftX; + int yOffs = _s52_alienTopY - 52 * rowNum - _s52_alienHeight + 10; + for (int i = 0; i < 5; ++i) { + if (_s52_items[rowNum][i] >= 0) { + _gameSys->insertSequence(_s52_items[rowNum][i], i + 256, 0, 0, kSeqNone, 0, xOffs, yOffs); + ++_s52_alienSpeed; + } + xOffs += _s52_alienWidth; + } +} + +void GnapEngine::scene52_updateAlienRow(int rowNum) { + + if (_s52_alienRowKind[rowNum] != -1 && !scene52_checkAlienRow(rowNum)) { + scene52_updateAlienRowXOfs(); + _s52_alienRowIds[rowNum] = -1; + int xOffs = _s52_alienLeftX + _s52_alienRowXOfs[rowNum]; + int yOffs = _s52_alienTopY - 52 * rowNum - _s52_alienHeight + 10; + for (int i = 0; i < 5; ++i) { + if (_s52_items[rowNum][i] >= 0) { + _gameSys->insertSequence(_s52_items[rowNum][i], i + 256, _s52_items[rowNum][i], i + 256, kSeqSyncWait, 0, xOffs, yOffs); + if (_s52_alienRowIds[rowNum] == -1) + _s52_alienRowIds[rowNum] = i + 256; + } else if (_s52_items[rowNum][i] == -2) { + _gameSys->removeSequence(_s52_alienRowKind[rowNum], i + 256, 1); + _s52_items[rowNum][i] = -1; + --_s52_alienSpeed; + } + xOffs += _s52_alienWidth; + } + if (_s52_alienRowIds[rowNum] == -1) { + _gameSys->setAnimation(0, 0, _s52_alienRowAnims[rowNum]); + // MessageBoxA(0, "No live aliens!", "Error 3:", 0x30u); + } else { + _gameSys->setAnimation(_s52_alienRowKind[rowNum], _s52_alienRowIds[rowNum], _s52_alienRowAnims[rowNum]); + } + if (rowNum == 1) { + for (int j = 0; j < 3; ++j) { + if (_s52_shieldSpriteIds[j] != -1) { + _gameSys->fillSurface(0, _s52_shieldPosX[j], _s52_arcadeScreenBottom - 44, 33, 44, 0, 0, 0); + _s52_shieldSpriteIds[j] = -1; + } + } + } + if (rowNum == 0 && _s52_bottomAlienFlag) + scene52_shipExplode(); + } +} + +void GnapEngine::scene52_moveDownAlienRow() { + + int v2[5], v3, v1, v0, v4; + + for (int i = 0; i < 5; ++i) + v2[i] = _s52_items[0][i]; + + v3 = _s52_alienRowIds[0]; + v1 = _s52_alienRowAnims[0]; + v0 = _s52_alienRowKind[0]; + v4 = _s52_alienRowXOfs[0]; + + for (int j = 0; j < 7; ++j) { + for (int i = 0; i < 5; ++i) + _s52_items[j][i] = _s52_items[j + 1][i]; + _s52_alienRowIds[j] = _s52_alienRowIds[j + 1]; + _s52_alienRowAnims[j] = _s52_alienRowAnims[j + 1]; + _s52_alienRowKind[j] = _s52_alienRowKind[j + 1]; + _s52_alienRowXOfs[j] = _s52_alienRowXOfs[j + 1]; + } + + for (int i = 0; i < 5; ++i) + _s52_items[6][i] = v2[i]; + + _s52_alienRowIds[6] = v3; + _s52_alienRowAnims[6] = v1; + _s52_alienRowKind[6] = v0; + _s52_alienRowXOfs[6] = v4; + + scene52_updateAlien(6); + scene52_initAlienRowKind(6, _s52_alienRowKind[6]); + scene52_insertAlienRow(6); + + _s52_bottomAlienFlag = _s52_alienRowKind[0] > -1; +} + +int GnapEngine::scene52_updateHitAlien() { + int result = 0, rowNum, ya; + + int y = _s52_shipCannonTopY - _s52_shipCannonPosY; + + if (y == 26) { + rowNum = 1; + ya = _s52_shipCannonPosY + 26; + } else { + if (y % 52) + return 0; + rowNum = y / 52 + 1; + ya = _s52_shipCannonPosY; + } + + if (rowNum < 7) { + int hitAlienNum = scene52_getHitAlienNum(rowNum); + if (hitAlienNum != -1 && _s52_items[rowNum][hitAlienNum] >= 0) { + _s52_gameScore = ((_s52_items[rowNum][hitAlienNum] - 24) % 3 + _s52_gameScore + 1) % 1000; + _s52_items[rowNum][hitAlienNum] = -2; + playSound(44, 0); + _gameSys->insertSequence(0x21, 266, 0, 0, + kSeqNone, 0, _s52_alienLeftX + hitAlienNum * _s52_alienWidth + _s52_alienRowXOfs[rowNum] - 10, ya - _s52_alienHeight); + result = 1; + } + } + + return result; +} + +int GnapEngine::scene52_getHitAlienNum(int rowNum) { + + int result = -1; + + int v3 = _s52_alienLeftX + _s52_alienRowXOfs[rowNum]; + + if (_s52_shipCannonPosX >= v3) { + int v8 = _s52_alienWidth / 2 - 15; + if (v3 + 5 * _s52_alienWidth - v8 >= _s52_shipCannonPosX) { + int v4 = v3 + _s52_alienWidth; + if (_s52_shipCannonPosX >= v4 - v8) { + int v5 = v4 + _s52_alienWidth; + if (_s52_shipCannonPosX >= v5 - v8) { + int v6 = v5 + _s52_alienWidth; + if (_s52_shipCannonPosX >= v6 - v8) { + int v7 = v6 + _s52_alienWidth; + if (_s52_shipCannonPosX >= v7 - v8) { + if (_s52_shipCannonPosX >= v7 + _s52_alienWidth - v8) + result = -1; + else + result = 4; + } else { + result = 3; + } + } else { + result = 2; + } + } else { + result = 1; + } + } else { + result = 0; + } + } else { + result = -1; + } + } else { + result = -1; + } + return result; +} + +int GnapEngine::scene52_alienCannonHitShip(int cannonNum) { + int result = 0; + + if (_s52_aliensCount) { + result = 0; + } else { + int cannonY = _s52_alienCannonPosY[cannonNum] - 13; + if (_s52_arcadeScreenBottom <= cannonY) { + if (_s52_shipMidY + _s52_arcadeScreenBottom > cannonY) { + if (_s52_alienCannonPosX[cannonNum] >= _s52_shipPosX) + result = _s52_alienCannonPosX[cannonNum] < _s52_shipMidX + _s52_shipPosX; + else + result = 0; + } else { + result = 0; + } + } else { + result = 0; + } + } + return result; +} + +int GnapEngine::scene52_alienCannonHitShield(int cannonNum) { + int result = 0; + + int v3 = _s52_alienCannonPosY[cannonNum] + 39; + if (_s52_arcadeScreenBottom - 44 > v3) + return 0; + + if (_s52_arcadeScreenBottom <= v3) + return 0; + + if (_s52_alienCannonPosX[cannonNum] < _s52_shieldPosX[0]) + return 0; + + if (_s52_alienCannonPosX[cannonNum] > _s52_shieldPosX[2] + 33) + return 0; + + int shieldNum = -1; + if (_s52_alienCannonPosX[cannonNum] < _s52_shieldPosX[0] + 33) + shieldNum = 0; + + if (shieldNum < 0 && _s52_alienCannonPosX[cannonNum] < _s52_shieldPosX[1]) + return 0; + + if (shieldNum < 0 && _s52_alienCannonPosX[cannonNum] < _s52_shieldPosX[1] + 33) + shieldNum = 1; + + if (shieldNum < 0) { + if (_s52_alienCannonPosX[cannonNum] < _s52_shieldPosX[2]) + return 0; + shieldNum = 2; + } + + if (_s52_shieldSpriteIds[shieldNum] == -1) { + result = 0; + } else { + ++_s52_shieldSpriteIds[shieldNum]; + if (_s52_shieldSpriteIds[shieldNum] <= 21) { + _gameSys->drawSpriteToBackground(_s52_shieldPosX[shieldNum], _s52_arcadeScreenBottom - 44, _s52_shieldSpriteIds[shieldNum]); + } else { + _gameSys->fillSurface(0, _s52_shieldPosX[shieldNum], _s52_arcadeScreenBottom - 44, 33, 44, 0, 0, 0); + _s52_shieldSpriteIds[shieldNum] = -1; + } + _gameSys->setAnimation(0, 0, cannonNum + 9); + _gameSys->insertSequence(0x21, shieldNum + 257, 0, 0, kSeqNone, 0, _s52_alienCannonPosX[cannonNum] - 18, _s52_arcadeScreenBottom - 44); + playSound(0x2C, 0); + result = 1; + } + + return result; +} + +int GnapEngine::scene52_shipCannonHitShield(int cannonNum) { + int result = 0; + + if (_s52_shipCannonPosX < _s52_shieldPosX[0]) + return 0; + + if (_s52_shipCannonPosX > _s52_shieldPosX[2] + 33) + return 0; + + int shieldNum = -1; + if (_s52_shipCannonPosX < _s52_shieldPosX[0] + 33) + shieldNum = 0; + + if (shieldNum < 0 && _s52_shipCannonPosX < _s52_shieldPosX[1]) + return 0; + + if (shieldNum < 0 && _s52_shipCannonPosX < _s52_shieldPosX[1] + 33) + shieldNum = 1; + + if (shieldNum < 0) { + if (_s52_shipCannonPosX < _s52_shieldPosX[2]) + return 0; + shieldNum = 2; + } + + if (_s52_shieldSpriteIds[shieldNum] == -1) { + result = 0; + } else { + ++_s52_shieldSpriteIds[shieldNum]; + if (_s52_shieldSpriteIds[shieldNum] <= 21) { + _gameSys->drawSpriteToBackground(_s52_shieldPosX[shieldNum], _s52_arcadeScreenBottom - 44, _s52_shieldSpriteIds[shieldNum]); + } else { + _gameSys->fillSurface(0, _s52_shieldPosX[shieldNum], _s52_arcadeScreenBottom - 44, 33, 44, 0, 0, 0); + _s52_shieldSpriteIds[shieldNum] = -1; + } + _gameSys->insertSequence(0x21, shieldNum + 257, 0, 0, kSeqNone, 0, _s52_shipCannonPosX - 18, _s52_arcadeScreenBottom - 44); + playSound(0x2C, 0); + result = 1; + } + + return result; +} + +int GnapEngine::scene52_shipCannonHitAlien() { + int result = 0; + + if (_s52_aliensCount) { + result = 0; + } else if (scene52_checkAlienRow(0)) { + result = 0; + } else { + int v1 = _s52_alienLeftX + _s52_alienRowXOfs[0]; + if (_s52_shipMidX + _s52_shipPosX >= _s52_alienLeftX + _s52_alienRowXOfs[0]) { + int v7 = _s52_alienWidth / 2 - 15; + if (v1 + 5 * _s52_alienWidth - v7 >= _s52_shipPosX) { + int v2 = v1 + _s52_alienWidth; + if (_s52_items[0][0] <= -1 || v2 - v7 <= _s52_shipPosX) { + int v3 = v2 + _s52_alienWidth; + if (_s52_items[0][1] <= -1 || v3 - v7 <= _s52_shipPosX) { + int v4 = v3 + _s52_alienWidth; + if (_s52_items[0][2] <= -1 || v4 - v7 <= _s52_shipPosX) { + int v5 = v4 + _s52_alienWidth; + if (_s52_items[0][3] <= -1 || v5 - v7 <= _s52_shipPosX) { + int v6 = v5 + _s52_alienWidth; + result = _s52_items[0][4] > -1 && v6 - v7 > _s52_shipPosX; + } else { + result = 1; + } + } else { + result = 1; + } + } else { + result = 1; + } + } else { + result = 1; + } + } else { + result = 0; + } + } else { + result = 0; + } + } + + return result; +} + +void GnapEngine::scene52_shipExplode() { + if (!_s52_aliensCount) { + _gameSys->setAnimation(0, 0, 7); + _gameSys->removeSequence(_s52_ufoSequenceId, 256, 1); + playSound(44, 0); + _gameSys->insertSequence(0x21, 266, 0, 0, kSeqNone, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + _s52_aliensCount = 1; + playSound(0x31, 0); + } +} + +int GnapEngine::scene52_checkAlienRow(int rowNum) { + + int v4 = 0; + + for (int i = 0; i < 5; ++i) + if (_s52_items[rowNum][i] >= 0) + return 0; + + for (int j = 0; j < 5; ++j) + if (_s52_items[rowNum][j] == -2) { + _gameSys->removeSequence(_s52_alienRowKind[rowNum], j + 256, 1); + _s52_items[rowNum][j] = -1; + --_s52_alienSpeed; + v4 = 1; + } + + if (v4) { + _gameSys->setAnimation(0, 0, _s52_alienRowAnims[rowNum]); + --_s52_liveAlienRows; + } + + if (_s52_liveAlienRows < 0) + _s52_liveAlienRows = 0; + + return 1; +} + +void GnapEngine::scene52_updateAlienRowXOfs() { + + int amount = 2 * (3 - _s52_liveAlienRows) + 1; + + if (_s52_alienSpeed == 2) + amount *= 4; + else if (_s52_alienSpeed == 1) + amount *= 10; + + if (_s52_alienDirection) { + for (int i = 0; i < 7; ++i) { + _s52_alienRowXOfs[i] -= amount; + if (_s52_alienRowXOfs[i] <= -100) { + _s52_alienRowXOfs[i] = -100; + _s52_alienDirection = 0; + ++_s52_alienRowDownCtr; + } + } + } else { + for (int j = 0; j < 7; ++j) { + _s52_alienRowXOfs[j] += amount; + if (_s52_alienRowXOfs[j] >= 100) { + _s52_alienRowXOfs[j] = 100; + _s52_alienDirection = 1; + ++_s52_alienRowDownCtr; + } + } + } + +} + +void GnapEngine::scene52_initAlienSize() { + + _s52_alienWidth = _gameSys->getSpriteWidthById(0); + if (_gameSys->getSpriteWidthById(1) > _s52_alienWidth) + _s52_alienWidth = _gameSys->getSpriteWidthById(1); + if (_gameSys->getSpriteWidthById(4) > _s52_alienWidth) + _s52_alienWidth = _gameSys->getSpriteWidthById(4); + if (_gameSys->getSpriteWidthById(5) > _s52_alienWidth) + _s52_alienWidth = _gameSys->getSpriteWidthById(5); + if (_gameSys->getSpriteWidthById(12) > _s52_alienWidth) + _s52_alienWidth = _gameSys->getSpriteWidthById(12); + if (_gameSys->getSpriteWidthById(13) > _s52_alienWidth) + _s52_alienWidth = _gameSys->getSpriteWidthById(13); + + _s52_alienHeight = _gameSys->getSpriteHeightById(0); + if (_gameSys->getSpriteHeightById(1) > _s52_alienHeight) + _s52_alienHeight = _gameSys->getSpriteHeightById(1); + if (_gameSys->getSpriteHeightById(4) > _s52_alienHeight) + _s52_alienHeight = _gameSys->getSpriteHeightById(4); + if (_gameSys->getSpriteHeightById(5) > _s52_alienHeight) + _s52_alienHeight = _gameSys->getSpriteHeightById(5); + if (_gameSys->getSpriteHeightById(12) > _s52_alienHeight) + _s52_alienHeight = _gameSys->getSpriteHeightById(12); + if (_gameSys->getSpriteHeightById(13) > _s52_alienHeight) + _s52_alienHeight = _gameSys->getSpriteHeightById(13); + + _s52_alienTopY = _s52_shipCannonTopY + 52; + _s52_alienLeftX = (800 - 5 * _s52_alienWidth) / 2; + +} + +void GnapEngine::scene52_playSound() { + if (_s52_soundToggle) { + playSound(0x2F, 0); + _s52_soundToggle = false; + } else { + playSound(0x2E, 0); + _s52_soundToggle = true; + } +} + +void GnapEngine::scene52_updateAliens() { + for (int i = 0; i < 7; ++i) + scene52_updateAlien(i); +} + +void GnapEngine::scene52_updateAlien(int rowNum) { + if (_s52_alienRowKind[rowNum] >= 0 && !scene52_checkAlienRow(rowNum)) { + for (int i = 0; i < 5; ++i) + if (_s52_items[rowNum][i] >= 0) + _s52_items[rowNum][i] = -2; + scene52_checkAlienRow(rowNum); + } +} + +void GnapEngine::scene52_loseShip() { + --_s52_shipsLeft; + if (_s52_shipsLeft == 2) { + _gameSys->fillSurface(0, 120, 140, _s52_shipMidX, _s52_shipMidY, 0, 0, 0); + } else if (_s52_shipsLeft == 1) { + _gameSys->fillSurface(0, 120, 185, _s52_shipMidX, _s52_shipMidY, 0, 0, 0); + } +} + +void GnapEngine::scene52_initShields() { + for (int i = 0; i < 3; ++i) { + _gameSys->drawSpriteToBackground(_s52_shieldPosX[i], _s52_arcadeScreenBottom - 44, 17); + _s52_shieldSpriteIds[i] = 17; + } +} + +void GnapEngine::scene52_initAnims() { + for (int i = 0; i < 7; ++i) + _gameSys->setAnimation(0, 0, i); + _gameSys->setAnimation(0, 0, 7); + for (int j = 0; j < 1; ++j) + _gameSys->setAnimation(0, 0, j + 8); + for (int k = 0; k < 3; ++k) + _gameSys->setAnimation(0, 0, k + 9); +} + +void GnapEngine::scene52_drawScore(int a1) { + char str[4]; + sprintf(str, "%03d", a1); + _gameSys->fillSurface(0, 420, 80, 48, 30, 0, 0, 0); + _gameSys->drawTextToSurface(0, 420, 80, 255, 255, 255, str); +} + +void GnapEngine::scene52_run() { + + _timers[1] = 0; + + hideCursor(); + + // TODO loadFont("maturasc", "Matura MT Script Capitals", 2000); + // TODO setFontSize(24); + + _s52_gameScore = 0; + _gameSys->drawTextToSurface(0, 300, 80, 255, 255, 255, "SCORE"); + _gameSys->drawTextToSurface(0, 468, 80, 255, 255, 255, "0"); + + scene52_drawScore(0); + + _s52_shipMidX = 33; + _s52_shipMidY = _gameSys->getSpriteHeightById(15); + _s52_shipPosX = (800 - _s52_shipMidX) / 2; + _s52_arcadeScreenBottom = 496; + _s52_arcadeScreenRight = 595 - _s52_shipMidX; + _s52_arcadeScreenLeft = 210; + _s52_shipsLeft = 3; + _s52_alienCounter = 0; + + _s52_shieldPosX[0] = 247; + _s52_shieldPosX[1] = 387; + _s52_shieldPosX[2] = 525; + + for (int i = 0; i < 3; ++i) + _s52_shieldSpriteIds[i] = -1; + + _gameSys->drawSpriteToBackground(120, 140, 0xF); + _gameSys->drawSpriteToBackground(120, 185, 0xF); + + scene52_initShipCannon(_s52_arcadeScreenBottom); + scene52_initAlienCannons(); + scene52_initAliens(); + + _s52_nextUfoSequenceId = 0x22; + _gameSys->setAnimation(0x22, 256, 7); + _gameSys->insertSequence(_s52_nextUfoSequenceId, 256, 0, 0, kSeqNone, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + + _s52_ufoSequenceId = _s52_nextUfoSequenceId; + + clearKeyStatus1(Common::KEYCODE_RIGHT); + clearKeyStatus1(Common::KEYCODE_LEFT); + clearKeyStatus1(Common::KEYCODE_SPACE); + clearKeyStatus1(Common::KEYCODE_UP); + clearKeyStatus1(Common::KEYCODE_ESCAPE); + + _timers[2] = 5; + _s52_shipFlag = false; + + _timers[0] = 10; + _s52_alienWave = true; + + while (!_sceneDone) { + + gameUpdateTick(); + + while (isKeyStatus2(Common::KEYCODE_RIGHT)) { + scene52_update(); + if (_gameSys->getAnimationStatus(7) == 2) { + if (_s52_shipPosX < _s52_arcadeScreenRight) { + _s52_shipPosX += 15; + if (_s52_shipPosX > _s52_arcadeScreenRight) + _s52_shipPosX = _s52_arcadeScreenRight; + _gameSys->setAnimation(_s52_nextUfoSequenceId, 256, 7); + _gameSys->insertSequence(_s52_nextUfoSequenceId, 256, _s52_ufoSequenceId, 256, kSeqSyncWait, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + _s52_ufoSequenceId = _s52_nextUfoSequenceId; + if (_s52_bottomAlienFlag && scene52_shipCannonHitAlien()) + scene52_shipExplode(); + } + break; + } + } + + while (isKeyStatus2(Common::KEYCODE_LEFT)) { + scene52_update(); + if (_gameSys->getAnimationStatus(7) == 2) { + if (_s52_shipPosX > _s52_arcadeScreenLeft) { + _s52_shipPosX -= 15; + if (_s52_shipPosX < _s52_arcadeScreenLeft) + _s52_shipPosX = _s52_arcadeScreenLeft; + _gameSys->setAnimation(_s52_nextUfoSequenceId, 256, 7); + _gameSys->insertSequence(_s52_nextUfoSequenceId, 256, _s52_ufoSequenceId, 256, kSeqSyncWait, 0, _s52_shipPosX, _s52_arcadeScreenBottom); + _s52_ufoSequenceId = _s52_nextUfoSequenceId; + if (_s52_bottomAlienFlag && scene52_shipCannonHitAlien()) + scene52_shipExplode(); + } + break; + } + } + + scene52_update(); + + if (sceneXX_sub_4466B1()) { + _s52_alienWave = false; + _gameSys->waitForUpdate(); + scene52_initAnims(); + clearKeyStatus1(30); + _sceneDone = true; + } + + } + + // TODO freeFont(); + + _gameSys->waitForUpdate(); + +} + +} // End of namespace Gnap |