refactoring needed for win32 crash

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

diff --git a/src/Moof/Core.hh b/src/Moof/Core.hh
new file mode 100644 (file)
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--- /dev/null
+++ b/src/Moof/Core.hh
@@ -0,0 +1,112 @@
+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ All rights reserved.
+ 
+ Redistribution   and   use  in  source  and  binary  forms,  with  or  without
+ modification, are permitted provided that the following conditions are met:
+ 
+   * Redistributions  of  source  code  must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+   * Redistributions  in binary form must reproduce the above copyright notice,
+     this  list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+ 
+ THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#ifndef _MOOF_CORE_HH_
+#define _MOOF_CORE_HH_
+
+#include <boost/shared_ptr.hpp>
+
+#include <Moof/Dispatch.hh>
+#include <Moof/Error.hh>
+#include <Moof/Layer.hh>
+
+
+namespace Mf {
+
+
+/**
+ * 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 Core
+{
+public:
+
+       Core();
+       
+       // loads settings: rngseed, timestep, framerate, showfps
+       void init();
+
+       int getFps() const;
+
+       void push(LayerP layer);        // push a layer onto the top
+       LayerP pop();                           // pop the top layer
+       LayerP pop(Layer* layer);       // pops a specific layer and all layers above it
+       void clear();                           // remove all layers (the core will stop)
+
+       int getSize() const;            // get the size of the stack
+
+       // set this machine in motion
+       void run();
+
+       Dispatch::Handler addHandler(const std::string& event,
+                       const Dispatch::Function& callback);
+       Dispatch::Handler addHandler(const std::string& event,
+                       const Dispatch::Function& callback, Dispatch::Handler handler);
+
+       void dispatch(const std::string& event,
+                       const Dispatch::Message* message = 0);
+
+private:
+
+       class Impl;
+       boost::shared_ptr<Impl> mImpl;
+};
+
+extern Core core;
+
+
+/*
+ * Some classes and subsystems require certain backend libraries to be
+ * initialized.  This is the mechanism to accomplish that.  Classes which rely
+ * on any backend libraries just need to instantiate this class as a member.
+ * Backend cleanup will occur automagically when there are no more instances.
+ */
+
+class Backend
+{
+public:
+
+       Backend();
+       ~Backend();
+
+       static bool check(Error& error);
+};
+
+
+} // namespace Mf
+
+#endif // _MOOF_CORE_HH_
+
+/** vim: set ts=4 sw=4 tw=80: *************************************************/
+