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doomclassic/doom/i_system.h

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+/*
+===========================================================================
+
+Doom 3 BFG Edition GPL Source Code
+Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  
+
+Doom 3 BFG Edition Source Code 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 3 of the License, or
+(at your option) any later version.
+
+Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#ifndef __I_SYSTEM__
+#define __I_SYSTEM__
+
+#include "d_ticcmd.h"
+#include "d_event.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+
+// Called by DoomMain.
+void I_Init (void);
+
+// Called by D_DoomLoop,
+// returns current time in tics.
+int I_GetTime (void);
+
+
+//
+// Called by D_DoomLoop,
+// called before processing any tics in a frame
+// (just after displaying a frame).
+// Time consuming syncronous operations
+// are performed here (joystick reading).
+// Can call D_PostEvent.
+//
+void I_StartFrame (void);
+
+
+//
+// Called by D_DoomLoop,
+// called before processing each tic in a frame.
+// Quick syncronous operations are performed here.
+// Can call D_PostEvent.
+#include "doomlib.h"
+
+// Asynchronous interrupt functions should maintain private queues
+// that are read by the synchronous functions
+// to be converted into events.
+
+// Either returns a null ticcmd,
+// or calls a loadable driver to build it.
+// This ticcmd will then be modified by the gameloop
+// for normal input.
+ticcmd_t* I_BaseTiccmd (void);
+
+
+// Called by M_Responder when quit is selected.
+// Clean exit, displays sell blurb.
+void I_Quit (void);
+
+
+void I_Error (char *error, ...);
+void I_Printf(char *error, ...);
+void I_PrintfE(char *error, ...);
+
+
+#endif
+