From 6c14025b2d416105915440e114de927c26e925ac Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Fri, 23 Mar 2012 20:23:03 +0200
Subject: Add event manager and use it to trigger sounds

---
 src/event_manager.h | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 src/event_manager.h

(limited to 'src/event_manager.h')

diff --git a/src/event_manager.h b/src/event_manager.h
new file mode 100644
index 000000000..b33d5a295
--- /dev/null
+++ b/src/event_manager.h
@@ -0,0 +1,115 @@
+/*
+Minetest-c55
+Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef EVENT_MANAGER_HEADER
+#define EVENT_MANAGER_HEADER
+
+#include "event.h"
+#include <list>
+#include <map>
+
+class EventManager: public MtEventManager
+{
+	static void receiverReceive(MtEvent *e, void *data)
+	{
+		MtEventReceiver *r = (MtEventReceiver*)data;
+		r->onEvent(e);
+	}
+	struct FuncSpec{
+		event_receive_func f;
+		void *d;
+		FuncSpec(event_receive_func f, void *d):
+			f(f), d(d)
+		{}
+	};
+	struct Dest{
+		std::list<FuncSpec> funcs;
+	};
+	std::map<std::string, Dest> m_dest;
+
+public:
+	~EventManager()
+	{
+	}
+	void put(MtEvent *e)
+	{
+		std::map<std::string, Dest>::iterator i = m_dest.find(e->getType());
+		if(i != m_dest.end()){
+			std::list<FuncSpec> &funcs = i->second.funcs;
+			for(std::list<FuncSpec>::iterator i = funcs.begin();
+					i != funcs.end(); i++){
+				(*(i->f))(e, i->d);
+			}
+		}
+		delete e;
+	}
+	void reg(const char *type, event_receive_func f, void *data)
+	{
+		std::map<std::string, Dest>::iterator i = m_dest.find(type);
+		if(i != m_dest.end()){
+			i->second.funcs.push_back(FuncSpec(f, data));
+		} else{
+			std::list<FuncSpec> funcs;
+			Dest dest;
+			dest.funcs.push_back(FuncSpec(f, data));
+			m_dest[type] = dest;
+		}
+	}
+	void dereg(const char *type, event_receive_func f, void *data)
+	{
+		if(type != NULL){
+			std::map<std::string, Dest>::iterator i = m_dest.find(type);
+			if(i != m_dest.end()){
+				std::list<FuncSpec> &funcs = i->second.funcs;
+				std::list<FuncSpec>::iterator i = funcs.begin();
+				while(i != funcs.end()){
+					bool remove = (i->f == f && (!data || i->d == data));
+					if(remove)
+						funcs.erase(i++);
+					else
+						i++;
+				}
+			}
+		} else{
+			for(std::map<std::string, Dest>::iterator
+					i = m_dest.begin(); i != m_dest.end(); i++){
+				std::list<FuncSpec> &funcs = i->second.funcs;
+				std::list<FuncSpec>::iterator i = funcs.begin();
+				while(i != funcs.end()){
+					bool remove = (i->f == f && (!data || i->d == data));
+					if(remove)
+						funcs.erase(i++);
+					else
+						i++;
+				}
+			}
+		}
+	}
+	void reg(MtEventReceiver *r, const char *type)
+	{
+		reg(type, EventManager::receiverReceive, r);
+	}
+	void dereg(MtEventReceiver *r, const char *type)
+	{
+		dereg(type, EventManager::receiverReceive, r);
+	}
+};
+
+#endif
+
-- 
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