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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.
*
* $URL$
* $Id$
*
*/
#include "mohawk/graphics.h"
#include "mohawk/riven.h"
#include "mohawk/riven_external.h"
#include "mohawk/riven_scripts.h"
#include "mohawk/sound.h"
#include "mohawk/video.h"
#include "common/stream.h"
#include "graphics/cursorman.h"
namespace Mohawk {
RivenScript::RivenScript(MohawkEngine_Riven *vm, Common::SeekableReadStream *stream, uint16 scriptType)
: _vm(vm), _stream(stream), _scriptType(scriptType) {
setupOpcodes();
}
RivenScript::~RivenScript() {
delete _stream;
}
RivenScriptList RivenScript::readScripts(MohawkEngine_Riven *vm, Common::SeekableReadStream *stream) {
RivenScriptList scriptList;
uint16 scriptCount = stream->readUint16BE();
for (uint16 i = 0; i < scriptCount; i++) {
uint16 scriptType = stream->readUint16BE();
uint32 scriptSize = calculateScriptSize(stream);
scriptList.push_back(Common::SharedPtr<RivenScript>(new RivenScript(vm, stream->readStream(scriptSize), scriptType)));
}
return scriptList;
}
uint32 RivenScript::calculateCommandSize(Common::SeekableReadStream* script) {
uint16 command = script->readUint16BE();
uint32 commandSize = 2;
if (command == 8) {
if (script->readUint16BE() != 2)
warning ("if-then-else unknown value is not 2");
script->readUint16BE(); // variable to check against
uint16 logicBlockCount = script->readUint16BE(); // number of logic blocks
commandSize += 6; // 2 + variable + logicBlocks
for (uint16 i = 0; i < logicBlockCount; i++) {
script->readUint16BE(); // Block variable
uint16 logicBlockLength = script->readUint16BE();
commandSize += 4;
for (uint16 j = 0; j < logicBlockLength; j++)
commandSize += calculateCommandSize(script);
}
} else {
uint16 argCount = script->readUint16BE();
commandSize += 2;
for (uint16 i = 0; i < argCount; i++) {
script->readUint16BE();
commandSize += 2;
}
}
return commandSize;
}
uint32 RivenScript::calculateScriptSize(Common::SeekableReadStream* script) {
uint32 oldPos = script->pos();
uint16 commandCount = script->readUint16BE();
uint16 scriptSize = 2; // 2 for command count
for (uint16 i = 0; i < commandCount; i++)
scriptSize += calculateCommandSize(script);
script->seek(oldPos);
return scriptSize;
}
#define OPCODE(x) { &RivenScript::x, #x }
void RivenScript::setupOpcodes() {
static const RivenOpcode riven_opcodes[] = {
// 0x00 (0 decimal)
OPCODE(empty),
OPCODE(drawBitmap),
OPCODE(switchCard),
OPCODE(playScriptSLST),
// 0x04 (4 decimal)
OPCODE(playSound),
OPCODE(empty), // Empty
OPCODE(empty), // Complex animation (not used)
OPCODE(setVariable),
// 0x08 (8 decimal)
OPCODE(mohawkSwitch),
OPCODE(enableHotspot),
OPCODE(disableHotspot),
OPCODE(empty), // Empty
// 0x0C (12 decimal)
OPCODE(clearSLST),
OPCODE(changeCursor),
OPCODE(delay),
OPCODE(empty), // Empty
// 0x10 (16 decimal)
OPCODE(empty), // Empty
OPCODE(runExternalCommand),
OPCODE(transition),
OPCODE(refreshCard),
// 0x14 (20 decimal)
OPCODE(disableScreenUpdate),
OPCODE(enableScreenUpdate),
OPCODE(empty), // Empty
OPCODE(empty), // Empty
// 0x18 (24 decimal)
OPCODE(incrementVariable),
OPCODE(empty), // Empty
OPCODE(empty), // Empty
OPCODE(changeStack),
// 0x1C (28 decimal)
OPCODE(disableMovie),
OPCODE(disableAllMovies),
OPCODE(empty), // Set movie rate (not used)
OPCODE(enableMovie),
// 0x20 (32 decimal)
OPCODE(playMovie),
OPCODE(playMovieBg),
OPCODE(stopMovie),
OPCODE(empty), // Start a water effect (not used)
// 0x24 (36 decimal)
OPCODE(unk_36), // Unknown
OPCODE(fadeAmbientSounds),
OPCODE(complexPlayMovie),
OPCODE(activatePLST),
// 0x28 (40 decimal)
OPCODE(activateSLST),
OPCODE(activateMLSTAndPlay),
OPCODE(empty), // Empty
OPCODE(activateBLST),
// 0x2C (44 decimal)
OPCODE(activateFLST),
OPCODE(zipMode),
OPCODE(activateMLST),
OPCODE(activateSLSTWithVolume)
};
_opcodes = riven_opcodes;
}
static void printTabs(byte tabs) {
for (byte i = 0; i < tabs; i++)
printf ("\t");
}
void RivenScript::dumpScript(Common::StringArray varNames, Common::StringArray xNames, byte tabs) {
if (_stream->pos() != 0)
_stream->seek(0);
printTabs(tabs); printf ("Stream Type %d:\n", _scriptType);
dumpCommands(varNames, xNames, tabs + 1);
}
void RivenScript::dumpCommands(Common::StringArray varNames, Common::StringArray xNames, byte tabs) {
uint16 commandCount = _stream->readUint16BE();
for (uint16 i = 0; i < commandCount; i++) {
uint16 command = _stream->readUint16BE();
if (command == 8) { // "Switch" Statement
if (_stream->readUint16BE() != 2)
warning ("if-then-else unknown value is not 2");
uint16 var = _stream->readUint16BE();
printTabs(tabs); printf("switch (%s) {\n", varNames[var].c_str());
uint16 logicBlockCount = _stream->readUint16BE();
for (uint16 j = 0; j < logicBlockCount; j++) {
uint16 varCheck = _stream->readUint16BE();
printTabs(tabs + 1);
if (varCheck == 0xFFFF)
printf("default:\n");
else
printf("case %d:\n", varCheck);
dumpCommands(varNames, xNames, tabs + 2);
printTabs(tabs + 2); printf("break;\n");
}
printTabs(tabs); printf("}\n");
} else if (command == 7) { // Use the variable name
_stream->readUint16BE(); // Skip the opcode var count
printTabs(tabs);
uint16 var = _stream->readUint16BE();
printf("%s = %d;\n", varNames[var].c_str(), _stream->readUint16BE());
} else if (command == 17) { // Use the external command name
_stream->readUint16BE(); // Skip the opcode var count
printTabs(tabs);
printf("%s(", xNames[_stream->readUint16BE()].c_str());
uint16 varCount = _stream->readUint16BE();
for (uint16 j = 0; j < varCount; j++) {
printf("%d", _stream->readUint16BE());
if (j != varCount - 1)
printf(", ");
}
printf (");\n");
} else if (command == 24) { // Use the variable name
_stream->readUint16BE(); // Skip the opcode var count
printTabs(tabs);
uint16 var = _stream->readUint16BE();
printf ("%s += %d;\n", varNames[var].c_str(), _stream->readUint16BE());
} else {
printTabs(tabs);
uint16 varCount = _stream->readUint16BE();
printf("%s(", _opcodes[command].desc);
for (uint16 j = 0; j < varCount; j++) {
printf("%d", _stream->readUint16BE());
if (j != varCount - 1)
printf(", ");
}
printf(");\n");
}
}
}
void RivenScript::runScript() {
if (_stream->pos() != 0)
_stream->seek(0);
processCommands(true);
}
void RivenScript::processCommands(bool runCommands) {
bool anotherBlockEvaluated = false;
bool runBlock = true;
uint16 commandCount = _stream->readUint16BE();
for (uint16 j = 0; j < commandCount && !_vm->shouldQuit() && _stream->pos() < _stream->size(); j++) {
uint16 command = _stream->readUint16BE();
if (command == 8) {
// Command 8 contains a conditional branch, similar to switch statements
if (_stream->readUint16BE() != 2)
warning("if-then-else unknown value is not 2");
uint16 var = _stream->readUint16BE(); // variable to check against
uint16 logicBlockCount = _stream->readUint16BE(); // number of logic blocks
for (uint16 k = 0; k < logicBlockCount; k++) {
uint16 checkValue = _stream->readUint16BE(); // variable for this logic block
// Run the following block if the block's variable is equal to the variable to check against
// Don't run it if the parent block is not executed
// And don't run it if another block has already evaluated to true (needed for the default case)
runBlock = (*_vm->getLocalVar(var) == checkValue || checkValue == 0xffff) && runCommands && !anotherBlockEvaluated;
processCommands(runBlock);
if (runBlock)
anotherBlockEvaluated = true;
}
anotherBlockEvaluated = false;
} else {
uint16 argCount = _stream->readUint16BE();
uint16 *argValues = new uint16[argCount];
for (uint16 k = 0; k < argCount; k++)
argValues[k] = _stream->readUint16BE();
if (runCommands) {
debug (4, "Running opcode %04x, argument count %d", command, argCount);
(this->*(_opcodes[command].proc)) (command, argCount, argValues);
}
delete[] argValues;
}
}
}
////////////////////////////////
// Opcodes
////////////////////////////////
// Command 1: draw tBMP resource (tbmp_id, left, top, right, bottom, u0, u1, u2, u3)
void RivenScript::drawBitmap(uint16 op, uint16 argc, uint16 *argv) {
if (argc < 5) {
// Copy the image to the whole screen, ignoring the rest of the parameters
_vm->_gfx->copyImageToScreen(argv[0], 0, 0, 608, 392);
} else {
// Copy the image to a certain part of the screen
_vm->_gfx->copyImageToScreen(argv[0], argv[1], argv[2], argv[3], argv[4]);
}
// Now, update the screen
_vm->_gfx->updateScreen();
}
// Command 2: go to card (card id)
void RivenScript::switchCard(uint16 op, uint16 argc, uint16 *argv) {
_vm->changeToCard(argv[0]);
}
// Command 3: play an SLST from the script
void RivenScript::playScriptSLST(uint16 op, uint16 argc, uint16 *argv) {
SLSTRecord slstRecord;
int offset = 0, j = 0;
slstRecord.index = 0; // not set by the scripts, so we set it to 0
slstRecord.sound_count = argv[0];
slstRecord.sound_ids = new uint16[slstRecord.sound_count];
offset = slstRecord.sound_count;
for (j = 0; j < slstRecord.sound_count; j++)
slstRecord.sound_ids[j] = argv[offset++];
slstRecord.fade_flags = argv[offset++];
slstRecord.loop = argv[offset++];
slstRecord.global_volume = argv[offset++];
slstRecord.u0 = argv[offset++];
slstRecord.u1 = argv[offset++];
slstRecord.volumes = new uint16[slstRecord.sound_count];
slstRecord.balances = new int16[slstRecord.sound_count];
slstRecord.u2 = new uint16[slstRecord.sound_count];
for (j = 0; j < slstRecord.sound_count; j++)
slstRecord.volumes[j] = argv[offset++];
for (j = 0; j < slstRecord.sound_count; j++)
slstRecord.balances[j] = argv[offset++]; // negative = left, 0 = center, positive = right
for (j = 0; j < slstRecord.sound_count; j++)
slstRecord.u2[j] = argv[offset++]; // Unknown
// Play the requested sound list
_vm->_sound->playSLST(slstRecord);
_vm->_activatedSLST = true;
}
// Command 4: play local tWAV resource (twav_id, volume, u1)
void RivenScript::playSound(uint16 op, uint16 argc, uint16 *argv) {
_vm->_sound->playSound(argv[0], false);
}
// Command 7: set variable value (variable, value)
void RivenScript::setVariable(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Setting variable %d to %d", argv[0], argv[1]);
*_vm->getLocalVar(argv[0]) = argv[1];
}
// Command 8: conditional branch
void RivenScript::mohawkSwitch(uint16 op, uint16 argc, uint16 *argv) {
// dummy function, this opcode does logic checking in processCommands()
}
// Command 9: enable hotspot (blst_id)
void RivenScript::enableHotspot(uint16 op, uint16 argc, uint16 *argv) {
for (uint16 i = 0; i < _vm->getHotspotCount(); i++) {
if (_vm->_hotspots[i].blstID == argv[0]) {
debug(2, "Enabling hotspot with BLST ID %d", argv[0]);
_vm->_hotspots[i].enabled = true;
}
}
}
// Command 10: disable hotspot (blst_id)
void RivenScript::disableHotspot(uint16 op, uint16 argc, uint16 *argv) {
for (uint16 i = 0; i < _vm->getHotspotCount(); i++) {
if (_vm->_hotspots[i].blstID == argv[0]) {
debug(2, "Disabling hotspot with BLST ID %d", argv[0]);
_vm->_hotspots[i].enabled = false;
}
}
}
// Command 12: clear slst records (flags)
void RivenScript::clearSLST(uint16 op, uint16 argc, uint16 *argv) {
warning ("STUB: clearSLST: Fade Out = %s, Fade In = %s", ((argv[0] & 1) != 0) ? "Yes" : "No", ((argv[0] & 2) != 0) ? "Yes" : "No");
//_vm->_sound->clearAllSLST();
}
// Command 13: set mouse cursor (cursor_id)
void RivenScript::changeCursor(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Change to cursor %d", argv[0]);
_vm->_gfx->changeCursor(argv[0]);
}
// Command 14: pause script execution (delay in ms, u1)
void RivenScript::delay(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Delay %dms", argv[0]);
if (argv[0] > 0)
_vm->_system->delayMillis(argv[0]);
}
// Command 17: call external command
void RivenScript::runExternalCommand(uint16 op, uint16 argc, uint16 *argv) {
_vm->_externalScriptHandler->runCommand(argc, argv);
}
// Command 18: transition
// Note that this opcode has 1 or 5 parameters, depending on parameter 0
// Parameter 0: transition type
// Parameters 1-4: transition rectangle
void RivenScript::transition(uint16 op, uint16 argc, uint16 *argv) {
if (argc == 1)
_vm->_gfx->scheduleTransition(argv[0]);
else
_vm->_gfx->scheduleTransition(argv[0], Common::Rect(argv[1], argv[2], argv[3], argv[4]));
}
// Command 19: reload card
void RivenScript::refreshCard(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Refreshing card");
_vm->refreshCard();
}
// Command 20: disable screen update
void RivenScript::disableScreenUpdate(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Screen update disabled");
_vm->_gfx->_updatesEnabled = false;
}
// Command 21: enable screen update
void RivenScript::enableScreenUpdate(uint16 op, uint16 argc, uint16 *argv) {
debug(2, "Screen update enabled");
_vm->_gfx->_updatesEnabled = true;
_vm->_gfx->updateScreen();
}
// Command 24: increment variable (variable, value)
void RivenScript::incrementVariable(uint16 op, uint16 argc, uint16 *argv) {
uint32 *localVar = _vm->getLocalVar(argv[0]);
*localVar += argv[1];
debug (2, "Incrementing variable %d by %d, variable now is equal to %d", argv[0], argv[1], *localVar);
}
// Command 27: go to stack (stack_name code_hi code_lo)
void RivenScript::changeStack(uint16 op, uint16 argc, uint16 *argv) {
Common::String stackName = _vm->getName(StackNames, argv[0]);
int8 index = -1;
for (byte i = 0; i < 8; i++)
if (!scumm_stricmp(_vm->getStackName(i).c_str(), stackName.c_str())) {
index = i;
break;
}
if (index == -1)
error ("\'%s\' is not a stack name!", stackName.c_str());
_vm->changeToStack(index);
uint32 rmapCode = (argv[1] << 16) + argv[2];
uint16 cardID = _vm->matchRMAPToCard(rmapCode);
_vm->changeToCard(cardID);
}
// Command 28: disable a movie
void RivenScript::disableMovie(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->disableMovie(argv[0]);
}
// Command 29: disable all movies
void RivenScript::disableAllMovies(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->disableAllMovies();
}
// Command 31: enable a movie
void RivenScript::enableMovie(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->enableMovie(argv[0]);
}
// Command 32: play foreground movie - blocking (movie_id)
void RivenScript::playMovie(uint16 op, uint16 argc, uint16 *argv) {
CursorMan.showMouse(false); // Hide the cursor before playing the video
_vm->_video->playMovieBlocking(argv[0]);
CursorMan.showMouse(true); // Show the cursor again when we're done ;)
}
// Command 33: play background movie - nonblocking (movie_id)
void RivenScript::playMovieBg(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->playMovie(argv[0]);
}
// Command 34: stop a movie
void RivenScript::stopMovie(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->stopMovie(argv[0]);
}
// Command 36: unknown
void RivenScript::unk_36(uint16 op, uint16 argc, uint16 *argv) {
debug(0, "unk_36: Ignoring");
}
// Command 37: fade ambient sounds
void RivenScript::fadeAmbientSounds(uint16 op, uint16 argc, uint16 *argv) {
warning("STUB: fadeAmbientSounds()");
}
// Command 38: Play a movie with extra parameters (movie id, delay high, delay low, record type, record id)
void RivenScript::complexPlayMovie(uint16 op, uint16 argc, uint16 *argv) {
warning("STUB: complexPlayMovie");
printf ("\tMovie ID = %d\n", argv[0]);
printf ("\tDelay = %d\n", (argv[1] << 16) + argv[2]);
if (argv[3] == 0) {
printf ("\tDraw PLST %d\n", argv[4]);
} else if (argv[3] == 40) {
printf ("\tPlay SLST %d\n", argv[4]);
} else {
error ("Unknown complexPlayMovie record type %d", argv[3]);
}
}
// Command 39: activate PLST record (card picture lists)
void RivenScript::activatePLST(uint16 op, uint16 argc, uint16 *argv) {
_vm->_gfx->drawPLST(argv[0]);
// An update is automatically sent here as long as it's not a load or update script and updates are enabled.
if (_scriptType != kCardLoadScript && _scriptType != kCardUpdateScript)
_vm->_gfx->updateScreen();
}
// Command 40: activate SLST record (card ambient sound lists)
void RivenScript::activateSLST(uint16 op, uint16 argc, uint16 *argv) {
// WORKAROUND: Disable the SLST that is played during Riven's intro.
// Riven X does this too (spoke this over with Jeff)
if (_vm->getCurStack() == tspit && _vm->getCurCardRMAP() == 0x6e9a && argv[0] == 2)
return;
_vm->_sound->playSLST(argv[0], _vm->getCurCard());
_vm->_activatedSLST = true;
}
// Command 41: activate MLST record and play
void RivenScript::activateMLSTAndPlay(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->activateMLST(argv[0], _vm->getCurCard());
_vm->_video->playMovie(argv[0]);
}
// Command 43: activate BLST record (card hotspot enabling lists)
void RivenScript::activateBLST(uint16 op, uint16 argc, uint16 *argv) {
Common::SeekableReadStream* blst = _vm->getRawData(ID_BLST, _vm->getCurCard());
uint16 recordCount = blst->readUint16BE();
for (uint16 i = 0; i < recordCount; i++) {
uint16 index = blst->readUint16BE(); // record index
uint16 enabled = blst->readUint16BE();
uint16 hotspotID = blst->readUint16BE();
if (argv[0] == index)
for (uint16 j = 0; j < _vm->getHotspotCount(); j++)
if (_vm->_hotspots[j].blstID == hotspotID)
_vm->_hotspots[j].enabled = (enabled == 1);
}
delete blst;
}
// Command 44: activate FLST record (information on which SFXE resource this card should use)
void RivenScript::activateFLST(uint16 op, uint16 argc, uint16 *argv) {
Common::SeekableReadStream* flst = _vm->getRawData(ID_FLST, _vm->getCurCard());
uint16 recordCount = flst->readUint16BE();
for (uint16 i = 0; i < recordCount; i++) {
uint16 index = flst->readUint16BE();
uint16 sfxeID = flst->readUint16BE();
if(flst->readUint16BE() != 0)
warning("FLST u0 non-zero");
if (index == argv[0]) {
_vm->_gfx->scheduleWaterEffect(sfxeID);
break;
}
}
delete flst;
}
// Command 45: do zip mode
void RivenScript::zipMode(uint16 op, uint16 argc, uint16 *argv) {
// Check the ZIPS records to see if we have a match to the hotspot name
Common::String hotspotName = _vm->getHotspotName(_vm->getCurHotspot());
for (uint16 i = 0; i < _vm->_zipModeData.size(); i++)
if (_vm->_zipModeData[i].name == hotspotName) {
_vm->changeToCard(_vm->_zipModeData[i].id);
return;
}
}
// Command 46: activate MLST record (movie lists)
void RivenScript::activateMLST(uint16 op, uint16 argc, uint16 *argv) {
_vm->_video->activateMLST(argv[0], _vm->getCurCard());
}
// Command 47: activate SLST record with a volume argument
void RivenScript::activateSLSTWithVolume(uint16 op, uint16 argc, uint16 *argv) {
warning("STUB: activateSLSTWithVolume()");
}
} // End of namespace Mohawk
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