14 typedef struct trace_s
16 // if true, the entire trace was in solid (see hitsupercontentsmask)
18 // if true, the initial point was in solid (see hitsupercontentsmask)
20 // if true, the trace passed through empty somewhere
21 // (set only by Q1BSP tracing)
23 // if true, the trace passed through water/slime/lava somewhere
24 // (set only by Q1BSP tracing)
26 // fraction of the total distance that was traveled before impact
27 // (1.0 = did not hit anything)
29 // like fraction but is not nudged away from the surface (better for
30 // comparisons between two trace structs, as only one nudge for the final
31 // result is ever needed)
33 // final position of the trace (simply a point between start and end)
35 // surface normal at impact (not really correct for edge collisions)
37 // entity the surface is on
38 // (not set by trace functions, only by physics)
40 // which SUPERCONTENTS bits to collide with, I.E. to consider solid
41 // (this also affects startsolid/allsolid)
42 int hitsupercontentsmask;
43 // the supercontents mask at the start point
44 int startsupercontents;
45 // initially false, set when the start leaf is found
46 // (set only by Q1BSP tracing and entity box tracing)
51 void Collision_Init(void);
52 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents);
54 typedef struct colpointf_s
60 typedef struct colplanef_s
67 typedef struct colbrushf_s
69 // the content flags of this brush
71 // the number of bounding planes on this brush
73 // the number of corner points on this brush
75 // the number of renderable triangles on this brush
77 // array of bounding planes on this brush
79 // array of corner points on this brush
81 // renderable triangles, as int[3] elements indexing the points
83 // used to avoid tracing against the same brush more than once
91 colbrushf_t *Collision_AllocBrushFloat(mempool_t *mempool, int numpoints, int numplanes, int numtriangles, int supercontents);
92 void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush);
93 colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points, int supercontents);
94 colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const mplane_t *originalplanes, int supercontents);
95 void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end);
96 void Collision_TraceBrushPolygonFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, int supercontents);
97 void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, const vec3_t segmentmins, const vec3_t segmentmaxs);
98 void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end);
99 void Collision_TraceLinePolygonFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numpoints, const float *points, int supercontents);
100 void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, const vec3_t segmentmins, const vec3_t segmentmaxs);
101 void Collision_TracePointBrushFloat(trace_t *trace, const vec3_t point, const colbrushf_t *thatbrush);
103 void Collision_TraceBrushPolygonTransformFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, const matrix4x4_t *polygonmatrixstart, const matrix4x4_t *polygonmatrixend, int supercontents);
105 colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs);
107 void Collision_BoundingBoxOfBrushTraceSegment(const colbrushf_t *start, const colbrushf_t *end, vec3_t mins, vec3_t maxs, float startfrac, float endfrac);
109 float Collision_ClipTrace_Line_Sphere(double *linestart, double *lineend, double *sphereorigin, double sphereradius, double *impactpoint, double *impactnormal);
110 void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2);
112 // this enables rather large debugging spew!
115 // 1 = spew trace calls if something odd is happening
116 // 2 = spew trace calls always
117 // 3 = spew detailed trace flow (bsp tree recursion info)
118 #define COLLISIONPARANOID 0