destroyed global classes; view hierarchy instead

[chaz/yoink] / src / Moof / View.hh

diff --git a/src/Moof/View.hh b/src/Moof/View.hh
new file mode 100644 (file)
index 0000000..9fae113
--- /dev/null
+++ b/src/Moof/View.hh
@@ -0,0 +1,88 @@
+
+/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
+**]  All rights reserved.
+*
+* vi:ts=4 sw=4 tw=75
+*
+* Distributable under the terms and conditions of the 2-clause BSD license;
+* see the file COPYING for a complete text of the license.
+*
+**************************************************************************/
+
+#ifndef _MOOF_VIEW_HH_
+#define _MOOF_VIEW_HH_
+
+#include <list>
+#include <string>
+
+#include <boost/shared_ptr.hpp>
+
+#include <Moof/Event.hh>
+#include <Moof/Math.hh>
+
+
+namespace Mf {
+
+       
+class Settings;
+class Video;
+
+class View;
+typedef boost::shared_ptr<View> ViewP;
+
+/**
+ * The core is essentially a stack of layers.  While running, it updates
+ * each layer from the bottom up every timestep.  It also draws each layer
+ * from the bottom up, adhering to the maximum frame-rate.  Events are sent
+ * to each layer from the top down until a layer signals the event was
+ * handled.  The core is also responsible for firing timers on time.  The
+ * core will continue running as long as there are layers on the stack.
+ */
+
+class View
+{
+public:
+
+       // loads settings: rngseed, timestep, framerate, showfps
+       View(Settings& settings, Video& video);
+       View();
+
+       virtual ~View() {}
+
+       virtual void didAddToView() {}
+       virtual void willRemoveFromView() {}
+
+       virtual void update(Scalar t, Scalar dt);
+       virtual void draw(Scalar alpha) const;
+       virtual bool handleEvent(const Event& event);
+
+
+       void addChild(ViewP view);
+       ViewP removeChild(View* view);
+       ViewP removeChild(ViewP view);
+       void clear();
+
+       View& parent() const;
+       const std::list<ViewP>& children() const;
+
+       // do not call these without adding the view to a hierarchy with a base
+       // view constructed with settings and a video context
+       Settings& settings() const;
+       Video& video() const;
+
+       // set this machine in motion
+       void run();
+       void stop();
+       bool isRunning() const;
+
+private:
+
+       class Impl;
+       boost::shared_ptr<Impl> mImpl;
+};
+
+
+} // namespace Mf
+
+#endif // _MOOF_VIEW_HH_
+