Added: #1469 Base factory implementation for camera animation modifiers

--HG--
branch : gsoc2012-fabien

code/ryzom/server/src/entities_game_service/camera_animation_manager/camera_animation_modifier_factory.cpp

@@ -0,0 +1,52 @@
+// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
+// Copyright (C) 2010  Winch Gate Property Limited
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
+
+#include "camera_animation_manager/camera_animation_modifier_factory.h"
+
+std::vector<std::pair<std::string, ICameraAnimationModifierFactory*> >* ICameraAnimationModifierFactory::Entries;
+
+ICameraAnimationModifier* ICameraAnimationModifierFactory::parseModifier(const NLLIGO::IPrimitive* prim, const std::string& filename, const std::string& modifierType)
+{
+	// We search the correct modifier type in our entries
+	for (uint i = 0; i < Entries->size(); i++)
+	{
+		if (modifierType == (*Entries)[i].first)
+		{
+			ICameraAnimationModifier * ret = (*Entries)[i].second->instanciate();
+			if (!ret)
+			{
+				nlerror("BUG IN CAMERA ANIMATION MODIFIER FACTORY : BAD INIT CODE");
+				return NULL;
+			}
+			// We parse the modifier
+			if (!ret->parseModifier(prim, filename))
+			{
+				nlerror("building camera animation modifier failed");
+				delete ret;
+				return NULL;
+			}
+			return ret;
+		}
+	}
+	return NULL;
+}
+
+void ICameraAnimationModifierFactory::init()
+{
+	if (!Entries)
+		Entries = new std::vector<std::pair<std::string, ICameraAnimationModifierFactory*> >;
+}

code/ryzom/server/src/entities_game_service/camera_animation_manager/camera_animation_modifier_factory.h

@@ -0,0 +1,79 @@
+// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
+// Copyright (C) 2010  Winch Gate Property Limited
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef RY_CAMERAANIMATIONMODIFIERFACTORY_H
+#define RY_CAMERAANIMATIONMODIFIERFACTORY_H
+
+#include "nel/ligo/primitive.h"
+#include <string>
+
+/************************************************************************/
+/* Interface for camera animation modifiers.
+ * For simplicity, sounds triggers and considered like modifiers too.
+ * It has to be able to parse it's parameters from the primitive.
+ * And also to generate a small script to send to the client
+ */
+/************************************************************************/
+class ICameraAnimationModifier
+{
+public:
+	/// This function is called when it's time to parse the primitive to load the camera animation modifier
+	virtual bool parseModifier(const NLLIGO::IPrimitive* prim, const std::string& filename) = 0;
+};
+
+/************************************************************************/
+/* Factory class that can instanciate the correct camera animation modifier handler.
+ * 
+ * \author Fabien Henon
+ * \date 2012
+ */
+/************************************************************************/
+class ICameraAnimationModifierFactory
+{
+public:
+	/// Function that will instanciate the correct camera animation step
+	static ICameraAnimationModifier* parseModifier(const NLLIGO::IPrimitive* prim, const std::string& filename, const std::string& modifierType);	
+protected:
+
+	/// Functions used to be able to create the camera animation modifiers
+	static void init();
+	virtual ICameraAnimationModifier * instanciate() = 0;
+	static std::vector<std::pair<std::string, ICameraAnimationModifierFactory*> >* Entries;
+};
+
+// Define used to register the different types of camera animation modifiers
+#define CAMERA_ANIMATION_REGISTR_MODIFIER(_class_,_name_) \
+class _class_##CameraAnimationModifierFactory : public ICameraAnimationModifierFactory \
+{\
+public:\
+	_class_##CameraAnimationModifierFactory()\
+{\
+	init();\
+	std::string str = std::string(_name_); \
+	for (uint i = 0; i < (*Entries).size(); i++ ) \
+{\
+	if ( (*Entries)[i].first == str || (*Entries)[i].second == this )nlstop;\
+}\
+	(*Entries).push_back( std::make_pair( str, this ) );\
+}\
+	ICameraAnimationModifier * instanciate()\
+{ \
+	return new _class_;\
+} \
+};\
+	static _class_##CameraAnimationModifierFactory* _class_##CameraAnimationModifierFactoryInstance = new _class_##CameraAnimationModifierFactory;
+
+#endif /* RY_CAMERAANIMATIONMODIFIERFACTORY_H */