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/* 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
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