Preliminary save/load support for Urban Runner

svn-id: r35418

1 files changed, 242 insertions, 2 deletions

diff --git a/engines/gob/saveload_v6.cpp b/engines/gob/saveload_v6.cpp
index cc233a36ba..b3e9eec2c1 100644
--- a/engines/gob/saveload_v6.cpp
+++ b/engines/gob/saveload_v6.cpp
@@ -28,19 +28,35 @@
 #include "gob/gob.h"
 #include "gob/saveload.h"
 #include "gob/game.h"
+#include "gob/inter.h"
 
 namespace Gob {
 
 SaveLoad_v6::SaveFile SaveLoad_v6::_saveFiles[] = {
-	{"mdo.def", 0, kSaveModeExists, kSaveNone},
-	{"NO_CD.TXT", 0, kSaveModeExists, kSaveNoCD}
+	{  "cat.inf", 0, kSaveModeSave,   kSaveGame},
+	{  "mdo.def", 0, kSaveModeExists, kSaveNone},
+	{"no_cd.txt", 0, kSaveModeExists, kSaveNoCD},
 };
 
 SaveLoad_v6::SaveLoad_v6(GobEngine *vm, const char *targetName) :
 	SaveLoad(vm, targetName) {
+
+	_save = new StagedSave(_vm->getEndianness());
+
+	_saveFiles[0].destName = new char[strlen(targetName) + 5];
+	_saveFiles[1].destName = 0;
+	_saveFiles[2].destName = 0;
+
+	sprintf(_saveFiles[0].destName, "%s.s00", targetName);
+
+	_varSize = 0;
+	_hasIndex = false;
 }
 
 SaveLoad_v6::~SaveLoad_v6() {
+	delete _save;
+
+	delete[] _saveFiles[0].destName;
 }
 
 SaveLoad::SaveMode SaveLoad_v6::getSaveMode(const char *fileName) {
@@ -63,4 +79,228 @@ SaveLoad::SaveMode SaveLoad_v6::getSaveMode(const char *fileName) {
 		return kSaveModeNone;
 }
 
+int SaveLoad_v6::getSaveType(const char *fileName) {
+	for (int i = 0; i < ARRAYSIZE(_saveFiles); i++)
+		if (!scumm_stricmp(fileName, _saveFiles[i].sourceName))
+			return i;
+
+	return -1;
+}
+
+int32 SaveLoad_v6::getSizeVersioned(int type) {
+	assertInited();
+
+	switch (_saveFiles[type].type) {
+	case kSaveGame:
+		return getSizeGame(_saveFiles[type]);
+	default:
+		return -1;
+	}
+
+	return -1;
+}
+
+bool SaveLoad_v6::loadVersioned(int type, int16 dataVar, int32 size, int32 offset) {
+	assertInited();
+
+	switch (_saveFiles[type].type) {
+	case kSaveGame:
+		if (loadGame(_saveFiles[type], dataVar, size, offset))
+			return true;
+
+		warning("While loading from slot %d", getSlot(offset));
+		break;
+
+	default:
+		return -1;
+	}
+
+	return false;
+}
+
+bool SaveLoad_v6::saveVersioned(int type, int16 dataVar, int32 size, int32 offset) {
+	assertInited();
+
+	switch (_saveFiles[type].type) {
+	case kSaveGame:
+		if (saveGame(_saveFiles[type], dataVar, size, offset))
+			return true;
+
+		warning("While saving to slot %d", getSlot(offset));
+		break;
+
+	default:
+		return -1;
+	}
+
+	return false;
+}
+
+int SaveLoad_v6::getSlot(int32 offset) const {
+	return ((offset - 2900) / _varSize);
+}
+
+int SaveLoad_v6::getSlotRemainder(int32 offset) const {
+	return ((offset - 2900) % _varSize);
+}
+
+int32 SaveLoad_v6::getSizeGame(SaveFile &saveFile) {
+	if (!_hasIndex)
+		return -1;
+
+	Common::SaveFileManager *saveMan = g_system->getSavefileManager();
+	Common::InSaveFile *in;
+
+	for (int i = 60; i >= 0; i--) {
+		in = saveMan->openForLoading(setCurrentSlot(saveFile.destName, i));
+		if (in) {
+			delete in;
+			return (i + 1) * _varSize + 2900;
+		}
+	}
+
+	return -1;
+}
+
+bool SaveLoad_v6::loadGame(SaveFile &saveFile,
+		int16 dataVar, int32 size, int32 offset) {
+
+	if (size == 0) {
+		dataVar = 0;
+		size = _varSize;
+	}
+
+	if (offset < 2900) {
+		debugC(3, kDebugSaveLoad, "Saving save index");
+
+		if ((offset + size) > 2900) {
+			warning("Wrong index size (%d, %d)", size, offset);
+			return false;
+		}
+
+		if (!_hasIndex) {
+			warning("No index written yet");
+			return false;
+		}
+
+		refreshIndex();
+
+		byte *sizes = new byte[size];
+		memset(sizes, 0, size);
+
+		_vm->_inter->_variables->copyFrom(dataVar, _indexBuffer + offset, sizes, size);
+
+		delete[] sizes;
+
+
+	} else {
+		int slot = getSlot(offset);
+		int slotRem = getSlotRemainder(offset);
+
+		debugC(2, kDebugSaveLoad, "Loading from slot %d", slot); 
+
+		if ((slot >= 60) || (slotRem != 0)) {
+			warning("Invalid loading procedure (%d, %d, %d, %d, %d)",
+					dataVar, size, offset, slot, slotRem);
+			return false;
+		}
+
+		refreshIndex();
+		SaveLoad::setCurrentSlot(saveFile.destName, slot);
+
+		if (!_save->load(dataVar, size, 40, saveFile.destName, _vm->_inter->_variables))
+			return false;
+
+		refreshIndex();
+	}
+
+	return true;
+}
+
+bool SaveLoad_v6::saveGame(SaveFile &saveFile,
+		int16 dataVar, int32 size, int32 offset) {
+
+	if (size == 0) {
+		dataVar = 0;
+		size = _varSize;
+	}
+
+	if (offset < 2900) {
+		debugC(3, kDebugSaveLoad, "Saving save index");
+
+		if ((offset + size) > 2900) {
+			warning("Wrong index size (%d, %d)", size, offset);
+			return false;
+		}
+
+		_vm->_inter->_variables->copyTo(dataVar, _indexBuffer + offset, 0, size);
+		_hasIndex = true;
+
+	} else {
+		int slot = getSlot(offset);
+		int slotRem = getSlotRemainder(offset);
+
+		debugC(2, kDebugSaveLoad, "Saving to slot %d", slot);
+
+		if ((slot >= 60) || (slotRem != 0)) {
+			warning("Invalid saving procedure (%d, %d, %d, %d, %d)",
+					dataVar, size, offset, slot, slotRem);
+			return false;
+		}
+
+		if (!_hasIndex) {
+			warning("No index written yet");
+			return false;
+		}
+
+		SaveLoad::setCurrentSlot(saveFile.destName, slot);
+
+		byte sizes[40];
+		memset(sizes, 0, 40);
+		if(!_save->save(0, 40, 0, saveFile.destName, _indexBuffer + 500 + (slot * 40), sizes))
+			return false;
+
+		if (!_save->save(dataVar, size, 40, saveFile.destName, _vm->_inter->_variables))
+			return false;
+
+		refreshIndex();
+	}
+
+	return true;
+}
+
+void SaveLoad_v6::assertInited() {
+	if (_varSize > 0)
+		return;
+
+	_varSize = _vm->_inter->_variables->getSize();
+
+	_save->addStage(40);
+	_save->addStage(_varSize);
+}
+
+void SaveLoad_v6::refreshIndex() {
+	Common::SaveFileManager *saveMan = g_system->getSavefileManager();
+	Common::InSaveFile *in;
+
+	int32 max = -1;
+	byte *names = _indexBuffer + 500;
+	for (int i = 0; i < 60; i++, names += 40) {
+		in = saveMan->openForLoading(setCurrentSlot(_saveFiles[0].destName, i));
+		if (in) {
+			max = i;
+			in->read(names, 40);
+			delete in;
+		} else
+			memset(names, 0, 40);
+	}
+
+	WRITE_LE_UINT32(_indexBuffer + 160, max + 1);
+
+	Common::OutSaveFile *out = saveMan->openForSaving("Foobar");
+	out->write(_indexBuffer, 2900);
+	out->flush();
+	delete out;
+}
+
 } // End of namespace Gob