ADL: Add loading from launcher

7 files changed, 128 insertions, 30 deletions

diff --git a/engines/adl/adl.cpp b/engines/adl/adl.cpp
index be9067881f..ab05c40b69 100644
--- a/engines/adl/adl.cpp
+++ b/engines/adl/adl.cpp
@@ -70,6 +70,16 @@ Common::Error AdlEngine::run() {
 	_display = new Display();
 	_parser = new Parser(*this, *_display);
 
+	int saveSlot = ConfMan.getInt("save_slot");
+	if (saveSlot >= 0) {
+		if (!loadState(saveSlot))
+			error("Failed to load save game from slot %i", saveSlot);
+		_display->setCursorPos(Common::Point(0, 23));
+	} else {
+		runIntro();
+		initState();
+	}
+
 	runGame();
 
 	return Common::kNoError;
@@ -455,7 +465,7 @@ void AdlEngine::showRoom() {
 	printMessage(curRoom().description, false);
 }
 
-bool AdlEngine::saveState(uint slot) {
+bool AdlEngine::saveState(uint slot, const Common::String *description) {
 	Common::String fileName = Common::String::format("%s.s%02d", _targetName.c_str(), slot);
 	Common::OutSaveFile *outFile = getSaveFileManager()->openForSaving(fileName);
 
@@ -464,9 +474,21 @@ bool AdlEngine::saveState(uint slot) {
 		return false;
 	}
 
-	outFile->writeUint32BE(getTag());
+	outFile->writeUint32BE(MKTAG('A', 'D', 'L', ':'));
 	outFile->writeByte(SAVEGAME_VERSION);
 
+	char name[SAVEGAME_NAME_LEN] = { };
+
+	if (description)
+		strncpy(name, description->c_str(), sizeof(name) - 1);
+	else {
+		Common::String defaultName("Save ");
+		defaultName += 'A' + slot;
+		strncpy(name, defaultName.c_str(), sizeof(name) - 1);
+	}
+
+	outFile->write(name, sizeof(name));
+
 	outFile->writeByte(_state.room);
 	outFile->writeByte(_state.moves);
 	outFile->writeByte(_state.isDark);
@@ -511,7 +533,7 @@ bool AdlEngine::loadState(uint slot) {
 		return false;
 	}
 
-	if (inFile->readUint32BE() != getTag()) {
+	if (inFile->readUint32BE() != MKTAG('A', 'D', 'L', ':')) {
 		warning("No header found in '%s'", fileName.c_str());
 		delete inFile;
 		return false;
@@ -526,6 +548,8 @@ bool AdlEngine::loadState(uint slot) {
 
 	initState();
 
+	inFile->seek(SAVEGAME_NAME_LEN, SEEK_CUR);
+
 	_state.room = inFile->readByte();
 	_state.moves = inFile->readByte();
 	_state.isDark = inFile->readByte();
diff --git a/engines/adl/adl.h b/engines/adl/adl.h
index b7fd3dc410..9955b0d79a 100644
--- a/engines/adl/adl.h
+++ b/engines/adl/adl.h
@@ -38,6 +38,7 @@ class SeekableReadStream;
 namespace Adl {
 
 #define SAVEGAME_VERSION 0
+#define SAVEGAME_NAME_LEN 32
 
 class Display;
 class Parser;
@@ -176,11 +177,11 @@ public:
 	virtual Common::String getEngineString(int str);
 
 protected:
+	virtual void runIntro() { }
 	virtual void runGame() = 0;
 	virtual void initState() = 0;
 	virtual void restartGame() = 0;
 	virtual uint getEngineMessage(EngineMessage msg) = 0;
-	virtual uint32 getTag() = 0;
 	Common::String readString(Common::ReadStream &stream, byte until = 0);
 	void printStrings(Common::SeekableReadStream &stream, int count = 1);
 	virtual void printMessage(uint idx, bool wait = true);
@@ -218,7 +219,7 @@ protected:
 
 private:
 	void printEngineMessage(EngineMessage);
-	bool saveState(uint slot);
+	bool saveState(uint slot, const Common::String *description = nullptr);
 	bool loadState(uint slot);
 	Common::String getTargetName() { return _targetName; }
 };
diff --git a/engines/adl/detection.cpp b/engines/adl/detection.cpp
index 9fadb9d3d7..5fe469d20f 100644
--- a/engines/adl/detection.cpp
+++ b/engines/adl/detection.cpp
@@ -20,6 +20,9 @@
  *
  */
 
+#include "common/system.h"
+#include "common/savefile.h"
+
 #include "engines/advancedDetector.h"
 
 #include "adl/adl.h"
@@ -69,9 +72,63 @@ public:
 		return "Copyright (C) Sierra On-Line";
 	}
 
+	bool hasFeature(MetaEngineFeature f) const;
+	int getMaximumSaveSlot() const { return 15; }
+	SaveStateList listSaves(const char *target) const;
+
 	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
 };
 
+bool AdlMetaEngine::hasFeature(MetaEngineFeature f) const {
+	switch(f) {
+	case kSupportsListSaves:
+	case kSupportsLoadingDuringStartup:
+		return true;
+	default:
+		return false;
+	}
+}
+
+SaveStateList AdlMetaEngine::listSaves(const char *target) const {
+	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
+	Common::StringArray files = saveFileMan->listSavefiles(Common::String(target) + ".s##");
+
+	SaveStateList saveList;
+	for (uint i = 0; i < files.size(); ++i) {
+		const Common::String &fileName = files[i];
+		Common::InSaveFile *inFile = saveFileMan->openForLoading(fileName);
+		if (!inFile) {
+			warning("Cannot open save file %s", fileName.c_str());
+			continue;
+		}
+
+		if (inFile->readUint32BE() != MKTAG('A', 'D', 'L', ':')) {
+			warning("No header found in '%s'", fileName.c_str());
+			delete inFile;
+			continue;
+		}
+
+		byte saveVersion = inFile->readByte();
+		if (saveVersion != SAVEGAME_VERSION) {
+			warning("Save game version %i not supported in '%s'", saveVersion, fileName.c_str());
+			delete inFile;
+			continue;
+		}
+
+		char name[SAVEGAME_NAME_LEN] = { };
+		inFile->read(name, sizeof(name) - 1);
+		delete inFile;
+
+		int slotNum = atoi(fileName.c_str() + fileName.size() - 2);
+		SaveStateDescriptor sd(slotNum, name);
+		saveList.push_back(sd);
+	}
+
+	// Sort saves based on slot number.
+	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
+	return saveList;
+}
+
 bool AdlMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const {
 	if (gd)
 		*engine = AdlEngine::create(((const AdlGameDescription *)gd)->gameType, syst, (const AdlGameDescription *)gd);
diff --git a/engines/adl/display.cpp b/engines/adl/display.cpp
index 05e7c2e67c..ffb98c4a1b 100644
--- a/engines/adl/display.cpp
+++ b/engines/adl/display.cpp
@@ -585,4 +585,8 @@ void Display::home() {
 	_cursorPos = 0;
 }
 
+void Display::setCursorPos(Common::Point pos) {
+	_cursorPos = pos.y * 40 + pos.x;
+}
+
 } // End of namespace Adl
diff --git a/engines/adl/display.h b/engines/adl/display.h
index 229446f447..91d8b0ec97 100644
--- a/engines/adl/display.h
+++ b/engines/adl/display.h
@@ -64,6 +64,7 @@ public:
 	void drawLine(Common::Point p1, Common::Point p2, byte color);
 	void clear(byte color);
 	void drawLineArt(const Common::Array<byte> &lineArt, Common::Point p, byte rotation = 0, byte scaling = 1, byte color = 0x7f);
+	void setCursorPos(Common::Point pos);
 
 private:
 	enum {
diff --git a/engines/adl/hires1.cpp b/engines/adl/hires1.cpp
index 45a011ad63..ba6f19a8e4 100644
--- a/engines/adl/hires1.cpp
+++ b/engines/adl/hires1.cpp
@@ -136,6 +136,8 @@ void HiRes1Engine::runIntro() {
 	file.seek(IDI_HR1_OFS_GAME_OR_HELP);
 	str = readString(file);
 
+	bool instructions = false;
+
 	while (1) {
 		_display->printString(str);
 		Common::String s = _display->inputString();
@@ -146,28 +148,47 @@ void HiRes1Engine::runIntro() {
 		if (s.empty())
 			continue;
 
-		if ((byte)s[0] == ('I' | 0x80))
+		if (s[0] == APPLECHAR('I')) {
+			instructions = true;
 			break;
-		else if ((byte)s[0] == ('G' | 0x80))
-			return;
+		} else if (s[0] == APPLECHAR('G')) {
+			break;
+		}
 	};
 
-	_display->setMode(Display::kModeText);
-	file.seek(IDI_HR1_OFS_INTRO_TEXT);
+	if (instructions) {
+		_display->setMode(Display::kModeText);
+		file.seek(IDI_HR1_OFS_INTRO_TEXT);
 
-	const uint pages[] = { 6, 6, 4, 5, 8, 7, 0 };
+		const uint pages[] = { 6, 6, 4, 5, 8, 7, 0 };
 
-	uint page = 0;
-	while (pages[page] != 0) {
-		_display->home();
-		printStrings(file, pages[page++]);
-		_display->inputString();
+		uint page = 0;
+		while (pages[page] != 0) {
+			_display->home();
+			printStrings(file, pages[page++]);
+			_display->inputString();
 
-		if (g_engine->shouldQuit())
-			return;
+			if (g_engine->shouldQuit())
+				return;
 
-		file.seek(9, SEEK_CUR);
+			file.seek(9, SEEK_CUR);
+		}
 	}
+
+	_display->printASCIIString("\r");
+
+	file.close();
+
+	_display->setMode(Display::kModeMixed);
+
+	if (!file.open("ADVENTURE"))
+		error("Failed to open file");
+
+	// Title screen shown during loading
+	file.seek(0x1800);
+	_display->loadFrameBuffer(file);
+	_display->decodeFrameBuffer();
+	_display->delay(2000);
 }
 
 void HiRes1Engine::drawPic(Common::ReadStream &stream, Common::Point pos) {
@@ -278,8 +299,7 @@ void HiRes1Engine::restartGame() {
 }
 
 void HiRes1Engine::runGame() {
-	runIntro();
-	_display->printASCIIString("\r");
+	_display->setMode(Display::kModeMixed);
 
 	Common::File f;
 
@@ -291,8 +311,6 @@ void HiRes1Engine::runGame() {
 
 	f.close();
 
-	initState();
-
 	if (!f.open("ADVENTURE"))
 		error("Failed to open file");
 
@@ -345,12 +363,6 @@ void HiRes1Engine::runGame() {
 		_lineArt.push_back(lineArt);
 	}
 
-	// Title screen shown during loading
-	f.seek(0x1800);
-	_display->loadFrameBuffer(f);
-	_display->decodeFrameBuffer();
-	_display->delay(2000);
-
 	f.seek(0x3800);
 	_parser->loadVerbs(f);
 
diff --git a/engines/adl/hires1.h b/engines/adl/hires1.h
index 247625cba7..897327cdbf 100644
--- a/engines/adl/hires1.h
+++ b/engines/adl/hires1.h
@@ -52,7 +52,6 @@ private:
 	void restartGame();
 	void printMessage(uint idx, bool wait = true);
 	uint getEngineMessage(EngineMessage msg);
-	uint32 getTag() { return MKTAG('H', 'R', 'A', '1'); }
 
 	void initState();
 	void runIntro();