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112 lines
3.6 KiB
C
112 lines
3.6 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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#define MAXCLIPSECTORS 512
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#define MAXCLIPNUM 2048
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#define CLIPCURBHEIGHT (1<<8)
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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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extern vec2_t hitscangoal;
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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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typedef struct
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{
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int16_t numsectors, numwalls;
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usectorptr_t sector;
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uwallptr_t wall;
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} mapinfo_t;
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extern int32_t quickloadboard;
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extern void engineInitClipMaps();
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extern void engineSetClipMap(mapinfo_t *bak, mapinfo_t *newmap);
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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 int16_t clipsectorlist[MAXCLIPSECTORS];
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int clipinsidebox(vec2_t *vect, int wallnum, int walldist);
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inline int clipinsidebox(int x, int y, int wall, int dist)
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{
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vec2_t v = { x, y };
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return clipinsidebox(&v, wall, dist);
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}
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int clipinsideboxline(int x, int y, int x1, int y1, int x2, int y2, int walldist);
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extern int32_t clipmoveboxtracenum;
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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,
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int32_t const flordist, uint32_t const cliptype) ATTRIBUTE((nonnull(1, 2)));
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inline int clipmove(int* x, int* y, int* z, short* sect, int xv, int yv, int wal, int ceil, int flor, int ct)
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{
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vec3_t xyz = { *x,*y,*z };
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int retval = clipmove(&xyz, sect, xv, yv, wal, ceil, flor, ct);
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*x = xyz.x;
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*y = xyz.y;
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*z = xyz.z;
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return retval;
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}
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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,
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int32_t const flordist, uint32_t const cliptype, uint8_t const noslidep) ATTRIBUTE((nonnull(1, 2)));
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int pushmove(vec3_t *const vect, int16_t *const sectnum, int32_t const walldist, int32_t const ceildist, int32_t const flordist,
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uint32_t const cliptype, bool clear = true) ATTRIBUTE((nonnull(1, 2)));
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inline int pushmove(int* x, int* y, int* z, int16_t* const sectnum, int32_t const walldist, int32_t const ceildist, int32_t const flordist,
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uint32_t const cliptype, bool clear = true)
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{
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vec3_t v = { *x,*y,*z };
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auto r = pushmove(&v, sectnum, walldist, ceildist, flordist, cliptype, clear);
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*x = v.x;
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*y = v.y;
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*z = v.z;
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return r;
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}
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#endif
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