1 files changed, 87 insertions, 0 deletions
diff --git a/demos/3rdparty/doom/r_plane.h b/demos/3rdparty/doom/r_plane.h
new file mode 100644
index 00000000..d2662336
--- /dev/null
+++ b/demos/3rdparty/doom/r_plane.h
@@ -0,0 +1,87 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// $Id:$
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// This source is available for distribution and/or modification
+// only under the terms of the DOOM Source Code License as
+// published by id Software. All rights reserved.
+//
+// The source is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
+// for more details.
+//
+// DESCRIPTION:
+//	Refresh, visplane stuff (floor, ceilings).
+//
+//-----------------------------------------------------------------------------
+
+
+#ifndef __R_PLANE__
+#define __R_PLANE__
+
+
+#include "r_data.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+
+// Visplane related.
+extern  short*		lastopening;
+
+
+typedef void (*planefunction_t) (int top, int bottom);
+
+extern planefunction_t	floorfunc;
+extern planefunction_t	ceilingfunc_t;
+
+extern short		floorclip[SCREENWIDTH];
+extern short		ceilingclip[SCREENWIDTH];
+
+extern fixed_t		yslope[SCREENHEIGHT];
+extern fixed_t		distscale[SCREENWIDTH];
+
+void R_InitPlanes (void);
+void R_ClearPlanes (void);
+
+void
+R_MapPlane
+( int		y,
+  int		x1,
+  int		x2 );
+
+void
+R_MakeSpans
+( int		x,
+  int		t1,
+  int		b1,
+  int		t2,
+  int		b2 );
+
+void R_DrawPlanes (void);
+
+visplane_t*
+R_FindPlane
+( fixed_t	height,
+  int		picnum,
+  int		lightlevel );
+
+visplane_t*
+R_CheckPlane
+( visplane_t*	pl,
+  int		start,
+  int		stop );
+
+
+
+#endif
+//-----------------------------------------------------------------------------
+//
+// $Log:$
+//
+//-----------------------------------------------------------------------------