62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 1993-1996 by id Software, Inc.
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// Copyright (C) 1998-2000 by DooM Legacy Team.
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// Copyright (C) 1999-2021 by Sonic Team Junior.
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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/// \file r_portal.h
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/// \brief Software renderer portal struct, functions, linked list extern.
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#ifndef __R_PORTAL__
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#define __R_PORTAL__
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#include "r_data.h"
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#include "r_textures.h"
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#include "r_plane.h" // visplanes
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/** Portal structure for the software renderer.
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*/
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typedef struct portal_s
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{
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struct portal_s *next;
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// Viewport.
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fixed_t viewx;
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fixed_t viewy;
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fixed_t viewz;
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angle_t viewangle;
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UINT8 pass; /**< Keeps track of the portal's recursion depth. */
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INT32 clipline; /**< Optional clipline for line-based portals. */
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// Clipping information.
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INT32 start; /**< First horizontal pixel coordinate to draw at. */
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INT32 end; /**< Last horizontal pixel coordinate to draw at. */
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INT16 *ceilingclip; /**< Temporary screen top clipping array. */
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INT16 *floorclip; /**< Temporary screen bottom clipping array. */
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fixed_t *frontscale;/**< Temporary screen bottom clipping array. */
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} portal_t;
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extern portal_t* portal_base;
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extern portal_t* portal_cap;
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extern UINT8 portalrender;
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extern line_t *portalclipline;
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extern sector_t *portalcullsector;
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extern INT32 portalclipstart, portalclipend;
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void Portal_InitList (void);
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void Portal_Remove (portal_t* portal);
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void Portal_Add2Lines (const INT32 line1, const INT32 line2, const INT32 x1, const INT32 x2);
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void Portal_AddSkybox (const visplane_t* plane);
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void Portal_ClipRange (portal_t* portal);
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void Portal_ClipApply (const portal_t* portal);
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void Portal_AddSkyboxPortals (void);
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#endif
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