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Diffstat (limited to 'engines/kyra/engine/scene_v2.cpp')
| -rw-r--r-- | engines/kyra/engine/scene_v2.cpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/engines/kyra/engine/scene_v2.cpp b/engines/kyra/engine/scene_v2.cpp new file mode 100644 index 0000000000..dad8188542 --- /dev/null +++ b/engines/kyra/engine/scene_v2.cpp @@ -0,0 +1,227 @@ +/* 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 "kyra/engine/kyra_v2.h" + +#include "common/system.h" + +namespace Kyra { + +void KyraEngine_v2::freeSceneAnims() { + for (int i = 0; i < ARRAYSIZE(_sceneAnims); ++i) + _sceneAnims[i].flags = 0; + + for (int i = 0; i < ARRAYSIZE(_sceneAnimMovie); ++i) { + if (_sceneAnimMovie[i]) + _sceneAnimMovie[i]->close(); + } +} + +void KyraEngine_v2::updateSpecialSceneScripts() { + uint32 nextTime = _system->getMillis() + _tickLength; + const int startScript = _lastProcessedSceneScript; + + while (_system->getMillis() <= nextTime) { + if (_sceneSpecialScriptsTimer[_lastProcessedSceneScript] <= _system->getMillis() && + !_specialSceneScriptState[_lastProcessedSceneScript]) { + _specialSceneScriptRunFlag = true; + + while (_specialSceneScriptRunFlag && _sceneSpecialScriptsTimer[_lastProcessedSceneScript] <= _system->getMillis()) { + if (!_emc->run(&_sceneSpecialScripts[_lastProcessedSceneScript])) + _specialSceneScriptRunFlag = false; + } + } + + if (!_emc->isValid(&_sceneSpecialScripts[_lastProcessedSceneScript])) { + _emc->start(&_sceneSpecialScripts[_lastProcessedSceneScript], _desc.firstAnimSceneScript + _lastProcessedSceneScript); + _specialSceneScriptRunFlag = false; + } + + ++_lastProcessedSceneScript; + if (_lastProcessedSceneScript >= 10) + _lastProcessedSceneScript = 0; + + if (_lastProcessedSceneScript == startScript) + return; + } +} + +void KyraEngine_v2::runSceneScript6() { + _emc->init(&_sceneScriptState, &_sceneScriptData); + + _sceneScriptState.regs[0] = _mainCharacter.sceneId; + _sceneScriptState.regs[1] = _mouseX; + _sceneScriptState.regs[2] = _mouseY; + _sceneScriptState.regs[4] = _itemInHand; + + _emc->start(&_sceneScriptState, 6); + while (_emc->isValid(&_sceneScriptState)) + _emc->run(&_sceneScriptState); +} + +#pragma mark - pathfinder + +int KyraEngine_v2::findWay(int x, int y, int toX, int toY, int *moveTable, int moveTableSize) { + x &= ~3; toX &= ~3; + y &= ~1; toY &= ~1; + int size = KyraEngine_v1::findWay(x, y, toX, toY, moveTable, moveTableSize); + + if (size && !_smoothingPath) { + _smoothingPath = true; + int temp = pathfinderInitPositionTable(moveTable); + temp = pathfinderInitPositionIndexTable(temp, x, y); + pathfinderFinializePath(moveTable, temp, x, y, moveTableSize); + _smoothingPath = false; + } + + return _smoothingPath ? size : getMoveTableSize(moveTable); +} + +bool KyraEngine_v2::directLinePassable(int x, int y, int toX, int toY) { + Screen *scr = screen(); + + while (x != toX || y != toY) { + int facing = getFacingFromPointToPoint(x, y, toX, toY); + x += _addXPosTable[facing]; + y += _addYPosTable[facing]; + if (!scr->getShapeFlag1(x, y)) + return false; + } + + return true; +} + +int KyraEngine_v2::pathfinderInitPositionTable(int *moveTable) { + bool breakLoop = false; + int *moveTableCur = moveTable; + int oldEntry = *moveTableCur, curEntry = *moveTableCur; + int oldX = 0, newX = 0, oldY = 0, newY = 0; + int lastEntry = 0; + lastEntry = pathfinderAddToPositionTable(lastEntry, 0, 0); + + while (*moveTableCur != 8) { + oldEntry = curEntry; + + while (true) { + curEntry = *moveTableCur; + if (curEntry >= 0 && curEntry <= 7) + break; + + if (curEntry == 8) { + breakLoop = true; + break; + } else { + ++moveTableCur; + } + } + + if (breakLoop) + break; + + oldX = newX; + oldY = newY; + + newX += _addXPosTable[curEntry]; + newY += _addYPosTable[curEntry]; + + int temp = ABS(curEntry - oldEntry); + if (temp > 4) { + temp = 8 - temp; + } + + if (temp > 1 || oldEntry != curEntry) + lastEntry = pathfinderAddToPositionTable(lastEntry, oldX, oldY); + + ++moveTableCur; + } + + lastEntry = pathfinderAddToPositionTable(lastEntry, newX, newY); + _pathfinderPositionTable[lastEntry * 2 + 0] = -1; + _pathfinderPositionTable[lastEntry * 2 + 1] = -1; + return lastEntry; +} + +int KyraEngine_v2::pathfinderAddToPositionTable(int index, int v1, int v2) { + _pathfinderPositionTable[index << 1] = v1; + _pathfinderPositionTable[(index << 1) + 1] = v2; + ++index; + if (index >= 199) + --index; + return index; +} + +int KyraEngine_v2::pathfinderInitPositionIndexTable(int tableLen, int x, int y) { + int x1 = 0, y1 = 0; + int x2 = 0, y2 = 0; + int lastEntry = 0; + int index2 = tableLen - 1, index1 = 0; + while (index2 > index1) { + x1 = _pathfinderPositionTable[index1 * 2 + 0] + x; + y1 = _pathfinderPositionTable[index1 * 2 + 1] + y; + x2 = _pathfinderPositionTable[index2 * 2 + 0] + x; + y2 = _pathfinderPositionTable[index2 * 2 + 1] + y; + + if (directLinePassable(x1, y1, x2, y2)) { + lastEntry = pathfinderAddToPositionIndexTable(lastEntry, index2); + if (tableLen - 1 == index2) + break; + index1 = index2; + index2 = tableLen - 1; + } else if (index1 + 1 == index2) { + lastEntry = pathfinderAddToPositionIndexTable(lastEntry, index2); + index1 = index2; + index2 = tableLen - 1; + } else { + --index2; + } + } + return lastEntry; +} + +int KyraEngine_v2::pathfinderAddToPositionIndexTable(int index, int v) { + _pathfinderPositionIndexTable[index] = v; + ++index; + if (index >= 199) + --index; + return index; +} + +void KyraEngine_v2::pathfinderFinializePath(int *moveTable, int tableLen, int x, int y, int moveTableSize) { + int x1 = 0, y1 = 0; + int x2 = 0, y2 = 0; + int index1 = 0, index2 = 0; + int sizeLeft = moveTableSize; + for (int i = 0; i < tableLen; ++i) { + index2 = _pathfinderPositionIndexTable[i]; + x1 = _pathfinderPositionTable[index1 * 2 + 0] + x; + y1 = _pathfinderPositionTable[index1 * 2 + 1] + y; + x2 = _pathfinderPositionTable[index2 * 2 + 0] + x; + y2 = _pathfinderPositionTable[index2 * 2 + 1] + y; + + int wayLen = findWay(x1, y1, x2, y2, moveTable, sizeLeft); + moveTable += wayLen; + sizeLeft -= wayLen; // unlike the original we want to be sure that the size left is correct + index1 = index2; + } +} + +} // End of namespace Kyra |