Player/LocalPlayer/RemotePlayer inheritance cleanup (part 2 on X)

* Server/Client Environments now have an helper to cast Player object in the right type to use it
* Server: use RemotePlayer everywhere and remove previous added casts
* Client: use LocalPlayer where needed
* Environment: remove unused functions (getPlayers(), getRandomConnectedPlayer(), getNearestConnectedPlayer())

src/serverobject.h

@@ -44,7 +44,6 @@ Some planning
 
 class ServerEnvironment;
 struct ItemStack;
-class Player;
 struct ToolCapabilities;
 struct ObjectProperties;
 
@@ -69,23 +68,23 @@ public:
 	// environment
 	virtual bool environmentDeletes() const
 	{ return true; }
-	
+
 	// Create a certain type of ServerActiveObject
 	static ServerActiveObject* create(ActiveObjectType type,
 			ServerEnvironment *env, u16 id, v3f pos,
 			const std::string &data);
-	
+
 	/*
 		Some simple getters/setters
 	*/
 	v3f getBasePosition(){ return m_base_position; }
 	void setBasePosition(v3f pos){ m_base_position = pos; }
 	ServerEnvironment* getEnv(){ return m_env; }
-	
+
 	/*
 		Some more dynamic interface
 	*/
-	
+
 	virtual void setPos(v3f pos)
 		{ setBasePosition(pos); }
 	// continuous: if true, object does not stop immediately at pos
@@ -96,7 +95,7 @@ public:
 	virtual float getMinimumSavedMovement();
 
 	virtual std::string getDescription(){return "SAO";}
-	
+
 	/*
 		Step object in time.
 		Messages added to messages are sent to client over network.
@@ -108,13 +107,13 @@ public:
 			packet.
 	*/
 	virtual void step(float dtime, bool send_recommended){}
-	
+
 	/*
 		The return value of this is passed to the client-side object
 		when it is created
 	*/
 	virtual std::string getClientInitializationData(u16 protocol_version){return "";}
-	
+
 	/*
 		The return value of this is passed to the server-side object
 		when it is created (converted from static to active - actually
@@ -131,7 +130,7 @@ public:
 	*/
 	virtual bool isStaticAllowed() const
 	{return true;}
-	
+
 	// Returns tool wear
 	virtual int punch(v3f dir,
 			const ToolCapabilities *toolcap=NULL,
@@ -207,7 +206,7 @@ public:
 		- This can be set to true by anything else too.
 	*/
 	bool m_removed;
-	
+
 	/*
 		This is set to true when an object should be removed from the active
 		object list but couldn't be removed because the id has to be
@@ -218,7 +217,7 @@ public:
 		list.
 	*/
 	bool m_pending_deactivation;
-	
+
 	/*
 		Whether the object's static data has been stored to a block
 	*/
@@ -228,12 +227,12 @@ public:
 		a copy of the static data resides.
 	*/
 	v3s16 m_static_block;
-	
+
 	/*
 		Queue of messages to be sent to the client
 	*/
 	std::queue<ActiveObjectMessage> m_messages_out;
-	
+
 protected:
 	// Used for creating objects based on type
 	typedef ServerActiveObject* (*Factory)