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+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 Simon Howard
+//
+// This program 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 2
+// of the License, or (at your option) any later version.
+//
+// This program 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 this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+// Rendering of moving objects, sprites.
+//
+//-----------------------------------------------------------------------------
+
+
+#ifndef __R_THINGS__
+#define __R_THINGS__
+
+
+
+#define MAXVISSPRITES 128
+
+extern vissprite_t vissprites[MAXVISSPRITES];
+extern vissprite_t* vissprite_p;
+extern vissprite_t vsprsortedhead;
+
+// Constant arrays used for psprite clipping
+// and initializing clipping.
+extern short negonearray[SCREENWIDTH];
+extern short screenheightarray[SCREENWIDTH];
+
+// vars for R_DrawMaskedColumn
+extern short* mfloorclip;
+extern short* mceilingclip;
+extern fixed_t spryscale;
+extern fixed_t sprtopscreen;
+
+extern fixed_t pspritescale;
+extern fixed_t pspriteiscale;
+
+
+void R_DrawMaskedColumn (column_t* column);
+
+
+void R_SortVisSprites (void);
+
+void R_AddSprites (sector_t* sec);
+void R_AddPSprites (void);
+void R_DrawSprites (void);
+void R_InitSprites (char** namelist);
+void R_ClearSprites (void);
+void R_DrawMasked (void);
+
+void
+R_ClipVisSprite
+( vissprite_t* vis,
+ int xl,
+ int xh );
+
+
+#endif