raze-gles/source/build/include/clip.h

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// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
// Ken Silverman's official web site: "http://www.advsys.net/ken"
// See the included license file "BUILDLIC.TXT" for license info.
//
// This file has been modified from Ken Silverman's original release
// by Jonathon Fowler (jf@jonof.id.au)
// by the EDuke32 team (development@voidpoint.com)
#pragma once
#ifndef clip_h_
#define clip_h_
#ifdef __cplusplus
extern "C" {
#endif
#define MAXCLIPSECTORS 512
#define MAXCLIPNUM 2048
#ifdef HAVE_CLIPSHAPE_FEATURE
#define CM_MAX 256 // must be a power of 2
// sectoidx bits
#undef CM_NONE
#define CM_NONE (CM_MAX<<1)
#define CM_SOME (CM_NONE-1)
#define CM_OUTER (CM_MAX) // sector surrounds clipping sector
// sprite -> sector tag mappings
#define CM_XREPEAT floorpal
#define CM_YREPEAT floorxpanning
#define CM_XOFFSET ceilingshade
#define CM_YOFFSET floorshade
#define CM_CSTAT hitag
#define CM_ANG extra
#define CM_FLOORZ(Sec) (*(int32_t *)&sector[Sec].ceilingxpanning) // ceilingxpanning,ceilingypanning,floorpicnum
#define CM_CEILINGZ(Sec) (*(int32_t *)&sector[Sec].visibility) // visibility,fogpal,lotag
// backup of original normalized coordinates
#define CM_WALL_X(Wal) (*(int32_t *)&wall[Wal].picnum) // picnum, overpicnum
#define CM_WALL_Y(Wal) (*(int32_t *)&wall[Wal].lotag) // lotag, hitag
// don't rotate when applying clipping, for models with rotational symmetry
#define CM_NOROT(Spri) (sprite[Spri].cstat&2)
#define CM_NOROTS(Sect) (sector[Sect].CM_CSTAT&2)
typedef struct
{
int16_t qbeg, qend; // indices into sectq
int16_t picnum, next;
int32_t maxdist;
} clipinfo_t;
typedef struct
{
int16_t numsectors, numwalls;
usectorptr_t sector;
uwallptr_t wall;
} mapinfo_t;
extern int32_t quickloadboard;
extern void engineInitClipMaps();
extern void engineSetClipMap(mapinfo_t *bak, mapinfo_t *newmap);
#endif // HAVE_CLIPSHAPE_FEATURE
typedef struct
{
int32_t x1, y1, x2, y2;
} linetype;
extern int16_t clipsectorlist[MAXCLIPSECTORS];
int clipinsidebox(vec2_t *vect, int wallnum, int walldist);
int clipinsideboxline(int x, int y, int x1, int y1, int x2, int y2, int walldist);
extern int32_t clipmoveboxtracenum;
int32_t clipmove(vec3_t *const pos, int16_t *const sectnum, int32_t xvect, int32_t yvect, int32_t const walldist, int32_t const ceildist,
int32_t const flordist, uint32_t const cliptype) ATTRIBUTE((nonnull(1, 2)));
int32_t clipmovex(vec3_t *const pos, int16_t *const sectnum, int32_t xvect, int32_t yvect, int32_t const walldist, int32_t const ceildist,
int32_t const flordist, uint32_t const cliptype, uint8_t const noslidep) ATTRIBUTE((nonnull(1, 2)));
int32_t pushmove(vec3_t *const vect, int16_t *const sectnum, int32_t const walldist, int32_t const ceildist, int32_t const flordist,
uint32_t const cliptype) ATTRIBUTE((nonnull(1, 2)));
#ifdef __cplusplus
}
#endif
#endif