forked from valve/halflife-sdk
267 lines
6.7 KiB
C
267 lines
6.7 KiB
C
/***
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*
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* Copyright (c) 1996-2001, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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****/
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// bsp5.h
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#include "cmdlib.h"
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#include "mathlib.h"
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#include "bspfile.h"
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#include "threads.h"
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//#define ON_EPSILON 0.05
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#define BOGUS_RANGE 18000
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// the exact bounding box of the brushes is expanded some for the headnode
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// volume. is this still needed?
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#define SIDESPACE 24
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//============================================================================
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typedef struct
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{
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int numpoints;
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vec3_t points[8]; // variable sized
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} winding_t;
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#define MAX_POINTS_ON_WINDING 128
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winding_t *BaseWindingForPlane (dplane_t *p);
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winding_t *NewWinding (int points);
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void FreeWinding (winding_t *w);
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winding_t *CopyWinding (winding_t *w);
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winding_t *ClipWinding (winding_t *in, dplane_t *split, qboolean keepon);
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void DivideWinding (winding_t *in, dplane_t *split, winding_t **front, winding_t **back);
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//============================================================================
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#define MAXEDGES 48 // 32
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#define MAXPOINTS 28 // don't let a base face get past this
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// because it can be split more later
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typedef struct face_s
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{
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struct face_s *next;
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int planenum;
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int texturenum;
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int contents; // contents in front of face
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struct face_s *original; // face on node
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int outputnumber; // only valid for original faces after
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// write surfaces
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int numpoints;
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vec3_t pts[MAXEDGES]; // FIXME: change to use winding_t
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} face_t;
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typedef struct surface_s
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{
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struct surface_s *next;
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int planenum;
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vec3_t mins, maxs;
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struct node_s *onnode; // true if surface has already been used
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// as a splitting node
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face_t *faces; // links to all the faces on either side of the surf
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} surface_t;
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typedef struct
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{
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vec3_t mins, maxs;
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surface_t *surfaces;
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} surfchain_t;
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//
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// there is a node_t structure for every node and leaf in the bsp tree
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//
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#define PLANENUM_LEAF -1
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typedef struct node_s
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{
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surface_t *surfaces;
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vec3_t mins,maxs; // bounding volume of portals;
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// information for decision nodes
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int planenum; // -1 = leaf node
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struct node_s *children[2]; // only valid for decision nodes
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face_t *faces; // decision nodes only, list for both sides
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// information for leafs
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int contents; // leaf nodes (0 for decision nodes)
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face_t **markfaces; // leaf nodes only, point to node faces
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struct portal_s *portals;
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int visleafnum; // -1 = solid
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int valid; // for flood filling
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int occupied; // light number in leaf for outside filling
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} node_t;
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#define NUM_HULLS 4
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face_t *NewFaceFromFace (face_t *in);
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void SplitFace (face_t *in, dplane_t *split, face_t **front, face_t **back);
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//=============================================================================
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// solidbsp.c
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void DivideFacet (face_t *in, dplane_t *split, face_t **front, face_t **back);
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void CalcSurfaceInfo (surface_t *surf);
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void SubdivideFace (face_t *f, face_t **prevptr);
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node_t *SolidBSP (surfchain_t *surfhead);
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//=============================================================================
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// merge.c
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void MergePlaneFaces (surface_t *plane);
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face_t *MergeFaceToList (face_t *face, face_t *list);
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face_t *FreeMergeListScraps (face_t *merged);
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void MergeAll (surface_t *surfhead);
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//=============================================================================
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// surfaces.c
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extern int c_cornerverts;
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extern int c_tryedges;
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extern face_t *edgefaces[MAX_MAP_EDGES][2];
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extern int firstmodeledge;
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extern int firstmodelface;
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void SubdivideFaces (surface_t *surfhead);
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surfchain_t *GatherNodeFaces (node_t *headnode);
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void MakeFaceEdges (node_t *headnode);
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//=============================================================================
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// portals.c
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typedef struct portal_s
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{
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dplane_t plane;
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node_t *onnode; // NULL = outside box
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node_t *nodes[2]; // [0] = front side of plane
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struct portal_s *next[2];
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winding_t *winding;
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} portal_t;
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extern node_t outside_node; // portals outside the world face this
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void AddPortalToNodes (portal_t *p, node_t *front, node_t *back);
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void RemovePortalFromNode (portal_t *portal, node_t *l);
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void MakeHeadnodePortals (node_t *node, vec3_t mins, vec3_t maxs);
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void WritePortalfile (node_t *headnode);
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//=============================================================================
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// region.c
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void GrowNodeRegions (node_t *headnode);
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//=============================================================================
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// tjunc.c
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void tjunc (node_t *headnode);
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//=============================================================================
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// writebsp.c
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void WriteNodePlanes (node_t *headnode);
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void WriteClipNodes (node_t *headnode);
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void WriteDrawNodes (node_t *headnode);
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void BeginBSPFile (void);
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void FinishBSPFile (void);
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//=============================================================================
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// draw.c
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extern vec3_t draw_mins, draw_maxs;
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void Draw_ClearBounds (void);
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void Draw_AddToBounds (vec3_t v);
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void Draw_DrawFace (face_t *f);
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void Draw_ClearWindow (void);
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void Draw_SetRed (void);
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void Draw_SetGrey (void);
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void Draw_SetBlack (void);
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void DrawPoint (vec3_t v);
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void Draw_SetColor (int c);
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void SetColor (int c);
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void DrawPortal (portal_t *p);
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void DrawLeaf (node_t *l, int color);
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void DrawWinding (winding_t *w);
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void DrawTri (vec3_t p1, vec3_t p2, vec3_t p3);
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//=============================================================================
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// outside.c
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node_t *FillOutside (node_t *node, qboolean leakfile);
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//=============================================================================
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extern qboolean drawflag;
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extern qboolean nofill;
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extern qboolean notjunc;
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extern qboolean verbose;
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extern qboolean nogfx;
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extern qboolean leakonly;
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extern qboolean watervis;
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extern int subdivide_size;
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extern int hullnum;
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void qprintf (char *fmt, ...); // only prints if verbose
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extern int valid;
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extern char portfilename[1024];
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extern char bspfilename[1024];
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extern char pointfilename[1024];
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extern qboolean worldmodel;
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extern face_t *validfaces[MAX_MAP_PLANES];
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surfchain_t *SurflistFromValidFaces (void);
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// misc functions
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face_t *AllocFace (void);
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void FreeFace (face_t *f);
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struct portal_s *AllocPortal (void);
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void FreePortal (struct portal_s *p);
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surface_t *AllocSurface (void);
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void FreeSurface (surface_t *s);
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node_t *AllocNode (void);
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//=============================================================================
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// cull.c
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void CullStuff (void);
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