Add event manager and use it to trigger sounds

src/gamedef.h

@@ -28,6 +28,7 @@ class INodeDefManager;
 class ICraftDefManager;
 class ITextureSource;
 class ISoundManager;
+class MtEventManager;
 
 /*
 	An interface for fetching game-global definitions like tool and
@@ -47,17 +48,19 @@ public:
 	// pointers in other threads than main thread will make things explode.
 	virtual ITextureSource* getTextureSource()=0;
 	
-	virtual ISoundManager* getSoundManager()=0;
-	
 	// Used for keeping track of names/ids of unknown nodes
 	virtual u16 allocateUnknownNodeId(const std::string &name)=0;
 
+	virtual ISoundManager* getSoundManager()=0;
+	virtual MtEventManager* getEventManager()=0;
+	
 	// Shorthands
 	IItemDefManager* idef(){return getItemDefManager();}
 	INodeDefManager* ndef(){return getNodeDefManager();}
 	ICraftDefManager* cdef(){return getCraftDefManager();}
 	ITextureSource* tsrc(){return getTextureSource();}
 	ISoundManager* sound(){return getSoundManager();}
+	MtEventManager* event(){return getEventManager();}
 };
 
 #endif