From 3915be8ff1cbb0a5aa9a63cb443829578d97e745 Mon Sep 17 00:00:00 2001
From: Le Philousophe
Date: Sat, 8 Jun 2019 12:22:11 +0200
Subject: CRYOMNI3D: Implement load/save in-game with GMM

---
 engines/cryomni3d/cryomni3d.cpp           |  3 ++-
 engines/cryomni3d/cryomni3d.h             |  5 +++++
 engines/cryomni3d/fixed_image.cpp         | 10 ++++++++++
 engines/cryomni3d/versailles/engine.cpp   |  8 ++++++++
 engines/cryomni3d/versailles/engine.h     |  4 ++++
 engines/cryomni3d/versailles/saveload.cpp | 10 ++++++++++
 6 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/engines/cryomni3d/cryomni3d.cpp b/engines/cryomni3d/cryomni3d.cpp
index ee788d6d8c..05d370c0a4 100644
--- a/engines/cryomni3d/cryomni3d.cpp
+++ b/engines/cryomni3d/cryomni3d.cpp
@@ -42,7 +42,8 @@ namespace CryOmni3D {
 
 CryOmni3DEngine::CryOmni3DEngine(OSystem *syst,
                                  const CryOmni3DGameDescription *gamedesc) : Engine(syst), _gameDescription(gamedesc),
-	_fontManager(), _sprites(), _dragStatus(kDragStatus_NoDrag), _autoRepeatNextEvent(-1u) {
+	_canLoadSave(false), _fontManager(), _sprites(), _dragStatus(kDragStatus_NoDrag),
+	_autoRepeatNextEvent(-1u) {
 	if (!_mixer->isReady()) {
 		error("Sound initialization failed");
 	}
diff --git a/engines/cryomni3d/cryomni3d.h b/engines/cryomni3d/cryomni3d.h
index df62764a9a..d1855a80e4 100644
--- a/engines/cryomni3d/cryomni3d.h
+++ b/engines/cryomni3d/cryomni3d.h
@@ -100,7 +100,10 @@ public:
 	Common::Language getLanguage() const;
 
 	bool hasFeature(EngineFeature f) const override;
+	bool canLoadGameStateCurrently() override { return _canLoadSave; }
+	bool canSaveGameStateCurrently() override { return _canLoadSave; }
 
+	void setCanLoadSave(bool canLoadSave) { _canLoadSave = canLoadSave; }
 	static const uint kSaveDescriptionLen = 20;
 private:
 	void pauseEngineIntern(bool);
@@ -157,6 +160,8 @@ protected:
 	void setBlackPalette();
 
 protected:
+	bool _canLoadSave;
+
 	FontManager _fontManager;
 	Sprites _sprites;
 	Objects _objects;
diff --git a/engines/cryomni3d/fixed_image.cpp b/engines/cryomni3d/fixed_image.cpp
index 3e8428ab44..16a35f8f1a 100644
--- a/engines/cryomni3d/fixed_image.cpp
+++ b/engines/cryomni3d/fixed_image.cpp
@@ -188,10 +188,15 @@ void ZonFixedImage::manage() {
 	_usedObject = nullptr;
 	_key.reset();
 
+	// As the game lets load/save from main menu displayed by cliking from the toolbar,
+	// it's safe to enable GMM Load/Save there
+	_engine.setCanLoadSave(true);
+
 	// Force poll events even when we must refresh the cursor
 	if (!_engine.pollEvents() && !_refreshCursor) {
 		g_system->updateScreen();
 		g_system->delayMillis(10);
+		_engine.setCanLoadSave(false);
 		return;
 	}
 	_refreshCursor = false;
@@ -202,9 +207,11 @@ void ZonFixedImage::manage() {
 
 	if (_key == Common::KEYCODE_ESCAPE) {
 		_exit = true;
+		_engine.setCanLoadSave(false);
 		return;
 	} else if (_engine.shouldAbort()) {
 		_exit = true;
+		_engine.setCanLoadSave(false);
 		return;
 	}
 
@@ -221,6 +228,7 @@ void ZonFixedImage::manage() {
 		}
 		// Return without any event to redo the loop and force refresh
 		_refreshCursor = true;
+		_engine.setCanLoadSave(false);
 		return;
 	}
 
@@ -268,6 +276,8 @@ void ZonFixedImage::manage() {
 
 	g_system->updateScreen();
 	g_system->delayMillis(10);
+
+	_engine.setCanLoadSave(false);
 }
 
 void ZonFixedImage::handleMouseZones(const Common::Array<Zone>::const_iterator &currentZone) {
diff --git a/engines/cryomni3d/versailles/engine.cpp b/engines/cryomni3d/versailles/engine.cpp
index c8a8b110ad..ab9318f8c3 100644
--- a/engines/cryomni3d/versailles/engine.cpp
+++ b/engines/cryomni3d/versailles/engine.cpp
@@ -67,6 +67,12 @@ CryOmni3DEngine_Versailles::~CryOmni3DEngine_Versailles() {
 	delete _fixedImage;
 }
 
+bool CryOmni3DEngine_Versailles::hasFeature(EngineFeature f) const {
+	return CryOmni3DEngine::hasFeature(f)
+	       || (f == kSupportsSavingDuringRuntime)
+	       || (f == kSupportsLoadingDuringRuntime);
+}
+
 Common::Error CryOmni3DEngine_Versailles::run() {
 	CryOmni3DEngine::run();
 
@@ -1135,6 +1141,7 @@ int CryOmni3DEngine_Versailles::handleWarp() {
 	bool moving = true;
 	uint actionId;
 	showMouse(true);
+	_canLoadSave = true;
 	while (!leftButtonPressed && !exit) {
 		int xDelta = 0, yDelta = 0;
 		uint movingCursor = -1;
@@ -1219,6 +1226,7 @@ int CryOmni3DEngine_Versailles::handleWarp() {
 		// Slow down loop but after updating screen
 		g_system->delayMillis(10);
 	}
+	_canLoadSave = false;
 	showMouse(false);
 	return actionId;
 }
diff --git a/engines/cryomni3d/versailles/engine.h b/engines/cryomni3d/versailles/engine.h
index 369f69ade9..83beddbd4b 100644
--- a/engines/cryomni3d/versailles/engine.h
+++ b/engines/cryomni3d/versailles/engine.h
@@ -217,6 +217,10 @@ public:
 	CryOmni3DEngine_Versailles(OSystem *syst, const CryOmni3DGameDescription *gamedesc);
 	virtual ~CryOmni3DEngine_Versailles();
 
+	bool hasFeature(EngineFeature f) const override;
+	virtual Common::Error loadGameState(int slot) override;
+	virtual Common::Error saveGameState(int slot, const Common::String &desc) override;
+
 	Common::String prepareFileName(const Common::String &baseName, const char *extension) const {
 		const char *const extensions[] = { extension, nullptr };
 		return prepareFileName(baseName, extensions);
diff --git a/engines/cryomni3d/versailles/saveload.cpp b/engines/cryomni3d/versailles/saveload.cpp
index 5aec69e5ff..2c14c3d624 100644
--- a/engines/cryomni3d/versailles/saveload.cpp
+++ b/engines/cryomni3d/versailles/saveload.cpp
@@ -30,6 +30,16 @@
 namespace CryOmni3D {
 namespace Versailles {
 
+Common::Error CryOmni3DEngine_Versailles::loadGameState(int slot) {
+	_loadedSave = slot + 1;
+	_abortCommand = kAbortLoadGame;
+	return Common::kNoError;
+}
+
+Common::Error CryOmni3DEngine_Versailles::saveGameState(int slot, const Common::String &desc) {
+	saveGame(_isVisiting, slot + 1, desc);
+	return Common::kNoError;
+}
 
 Common::String CryOmni3DEngine_Versailles::getSaveFileName(bool visit, uint saveNum) const {
 	return Common::String::format("%s%s.%04u", _targetName.c_str(), visit ? "_visit" : "", saveNum);
-- 
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