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106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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//
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// This file has been modified from Ken Silverman's original release
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// by Jonathon Fowler (jf@jonof.id.au)
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// by the EDuke32 team (development@voidpoint.com)
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#pragma once
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#ifndef clip_h_
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#define clip_h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAXCLIPSECTORS 1024
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#define MAXCLIPNUM 2048
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#ifdef HAVE_CLIPSHAPE_FEATURE
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#define CM_MAX 256 // must be a power of 2
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// sectoidx bits
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#undef CM_NONE
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#define CM_NONE (CM_MAX<<1)
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#define CM_SOME (CM_NONE-1)
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#define CM_OUTER (CM_MAX) // sector surrounds clipping sector
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// sprite -> sector tag mappings
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#define CM_XREPEAT floorpal
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#define CM_YREPEAT floorxpanning
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#define CM_XOFFSET ceilingshade
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#define CM_YOFFSET floorshade
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#define CM_CSTAT hitag
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#define CM_ANG extra
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#define CM_FLOORZ(Sec) (*(int32_t *)§or[Sec].ceilingxpanning) // ceilingxpanning,ceilingypanning,floorpicnum
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#define CM_CEILINGZ(Sec) (*(int32_t *)§or[Sec].visibility) // visibility,fogpal,lotag
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// backup of original normalized coordinates
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#define CM_WALL_X(Wal) (*(int32_t *)&wall[Wal].picnum) // picnum, overpicnum
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#define CM_WALL_Y(Wal) (*(int32_t *)&wall[Wal].lotag) // lotag, hitag
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// don't rotate when applying clipping, for models with rotational symmetry
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#define CM_NOROT(Spri) (sprite[Spri].cstat&2)
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#define CM_NOROTS(Sect) (sector[Sect].CM_CSTAT&2)
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typedef struct
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{
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int16_t qbeg, qend; // indices into sectq
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int16_t picnum, next;
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int32_t maxdist;
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} clipinfo_t;
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extern clipinfo_t clipinfo[CM_MAX];
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typedef struct
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{
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int16_t numsectors, numwalls;
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usectortype *sector;
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uwalltype *wall;
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} mapinfo_t;
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extern mapinfo_t origmapinfo, clipmapinfo;
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extern void engineInitClipMaps();
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extern int32_t quickloadboard;
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extern int16_t *sectq;
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extern int16_t pictoidx[MAXTILES]; // maps tile num to clipinfo[] index
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extern int16_t clipspritelist[MAXCLIPNUM];
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extern void engineSetClipMap(mapinfo_t *bak, mapinfo_t *newmap);
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extern int32_t clipsprite_try(uspritetype const * spr, int32_t xmin, int32_t ymin, int32_t xmax, int32_t ymax);
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extern int32_t clipsprite_initindex(int32_t curidx, uspritetype const * curspr, int32_t *clipsectcnt, const vec3_t *vect);
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#endif // HAVE_CLIPSHAPE_FEATURE
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typedef struct
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{
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int32_t x1, y1, x2, y2;
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} linetype;
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extern linetype clipit[MAXCLIPNUM];
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extern int16_t clipnum;
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extern int32_t clipsectnum, origclipsectnum, clipspritenum;
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extern int16_t clipsectorlist[MAXCLIPSECTORS], origclipsectorlist[MAXCLIPSECTORS];
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int clipinsidebox(vec2_t *vect, int wallnum, int walldist);
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int clipinsideboxline(int x, int y, int x1, int y1, int x2, int y2, int walldist);
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int sectoradjacent(int sect1, int sect2);
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extern int32_t clipmoveboxtracenum;
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int32_t clipmove(vec3_t *pos, int16_t *sectnum, int32_t xvect, int32_t yvect, int32_t walldist, int32_t ceildist,
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int32_t flordist, uint32_t cliptype) ATTRIBUTE((nonnull(1, 2)));
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int32_t clipmovex(vec3_t *pos, int16_t *sectnum, int32_t xvect, int32_t yvect, int32_t walldist, int32_t ceildist,
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int32_t flordist, uint32_t cliptype, uint8_t noslidep) ATTRIBUTE((nonnull(1, 2)));
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int32_t pushmove(vec3_t *vect, int16_t *sectnum, int32_t walldist, int32_t ceildist, int32_t flordist,
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uint32_t cliptype) ATTRIBUTE((nonnull(1, 2)));
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#ifdef __cplusplus
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}
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#endif
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#endif
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