Update of /cvsroot/super-tux/supertux/lib/special
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv18853/lib/special
Modified Files:
game_object.cpp game_object.h
Added Files:
object_remove_listener.h
Log Message:
added object remove_listener so that you can get a message if some objects are removed (not tested yet though)
Index: game_object.cpp
===================================================================
RCS file: /cvsroot/super-tux/supertux/lib/special/game_object.cpp,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- game_object.cpp 24 Nov 2004 14:10:23 -0000 1.5
+++ game_object.cpp 16 Jan 2005 12:11:22 -0000 1.6
@@ -19,18 +19,27 @@
#include <config.h>
-#include "special/game_object.h"
+#include "game_object.h"
+#include "object_remove_listener.h"
namespace SuperTux
{
GameObject::GameObject()
- : wants_to_die(false), flags(0)
+ : wants_to_die(false), remove_listeners(0), flags(0)
{
}
GameObject::~GameObject()
{
+ // call remove listeners (and remove them from the list)
+ RemoveListenerListEntry* entry = remove_listeners;
+ while(entry != 0) {
+ RemoveListenerListEntry* next = entry->next;
+ entry->listener->object_removed(this);
+ delete entry;
+ entry = next;
+ }
}
}
Index: game_object.h
===================================================================
RCS file: /cvsroot/super-tux/supertux/lib/special/game_object.h,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -d -r1.4 -r1.5
--- game_object.h 20 Nov 2004 22:14:36 -0000 1.4
+++ game_object.h 16 Jan 2005 12:11:22 -0000 1.5
@@ -27,6 +27,8 @@
class DrawingContext;
+ class ObjectRemoveListener;
+
/**
* Base class for all game objects. This contains functions for:
* -querying the actual type of the object
@@ -67,6 +69,18 @@
{
wants_to_die = true;
}
+ /** registers a remove listener which will be called if the object
+ * gets removed/destroyed
+ */
+ void add_remove_listener(ObjectRemoveListener* listener)
+ {
+ RemoveListenerListEntry* entry = new RemoveListenerListEntry();
+ entry->next = remove_listeners;
+ entry->listener = listener;
+
+ remove_listeners = entry;
+ }
+
// flags
enum {
@@ -87,6 +101,13 @@
*/
bool wants_to_die;
+ struct RemoveListenerListEntry
+ {
+ RemoveListenerListEntry* next;
+ ObjectRemoveListener* listener;
+ };
+ RemoveListenerListEntry* remove_listeners;
+
protected:
int flags;
};
--- NEW FILE: object_remove_listener.h ---
#ifndef __OBJECT_REMOVE_LISTENER_H__
#define __OBJECT_REMOVE_LISTENER_H__
namespace SuperTux
{
class GameObject;
class ObjectRemoveListener
{
public:
virtual void object_removed(GameObject* object) = 0;
};
}
#endif
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