q3bsp curve collisions (technically it can collide against any triangle mesh)

[xonotic/darkplaces.git] / collision.h

diff --git a/collision.h b/collision.h
index dfc02ff1c41dbdca7d6038009e17e5d77408fadd..ad391c66ee5d11bc09fc71321641361ddc1046f9 100644 (file)
--- a/collision.h
+++ b/collision.h
@@ -11,33 +11,39 @@ plane_t;
 
 typedef struct trace_s
 {
-       // if true, the entire trace was in solid
+       // if true, the entire trace was in solid (see hitsupercontentsmask)
        int allsolid;
-       // if true, the initial point was in solid
+       // if true, the initial point was in solid (see hitsupercontentsmask)
        int startsolid;
        // if true, the trace passed through empty somewhere
+       // (set only by Q1BSP tracing)
        int inopen;
-       // if true, the trace passed through water somewhere
+       // if true, the trace passed through water/slime/lava somewhere
+       // (set only by Q1BSP tracing)
        int inwater;
        // fraction of the total distance that was traveled before impact
        // (1.0 = did not hit anything)
        double fraction;
-       // final position
+       // final position of the trace (simply a point between start and end)
        double endpos[3];
-       // surface normal at impact
+       // surface normal at impact (not really correct for edge collisions)
        plane_t plane;
        // entity the surface is on
+       // (not set by trace functions, only by physics)
        void *ent;
-       // if not zero, treats this value as empty, and all others as solid (impact
-       // on content change)
-       int thiscontents;
-       // the contents at the impact or end point
-       int endcontents;
+       // which SUPERCONTENTS bits to collide with, I.E. to consider solid
+       // (this also affects startsolid/allsolid)
+       int hitsupercontentsmask;
+       // the supercontents mask at the start point
+       int startsupercontents;
+       // initially false, set when the start leaf is found
+       // (set only by Q1BSP tracing and entity box tracing)
+       int startfound;
 }
 trace_t;
 
 void Collision_Init(void);
-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);
+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);
 
 typedef struct colpointf_s
 {
@@ -54,20 +60,43 @@ colplanef_t;
 
 typedef struct colbrushf_s
 {
+       // the content flags of this brush
+       int supercontents;
+       // the number of bounding planes on this brush
        int numplanes;
+       // the number of corner points on this brush
        int numpoints;
+       // the number of renderable triangles on this brush
+       int numtriangles;
+       // array of bounding planes on this brush
        colplanef_t *planes;
+       // array of corner points on this brush
        colpointf_t *points;
+       // renderable triangles, as int[3] elements indexing the points
+       int *elements;
+       // used to avoid tracing against the same brush more than once
+       int markframe;
+       // culling box
+       vec3_t mins;
+       vec3_t maxs;
 }
 colbrushf_t;
 
-colbrushf_t *Collision_AllocBrushFloat(mempool_t *mempool, int numpoints, int numplanes);
+colbrushf_t *Collision_AllocBrushFloat(mempool_t *mempool, int numpoints, int numplanes, int numtriangles, int supercontents);
 void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush);
-colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points);
+colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points, int supercontents);
+colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const mplane_t *originalplanes, int supercontents);
 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);
-void Collision_TraceBrushPolygonFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points);
-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);
+void Collision_TraceBrushPolygonFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, int supercontents);
+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);
+void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end);
+void Collision_TraceLinePolygonFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numpoints, const float *points, int supercontents);
+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);
+
+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);
 
 colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs);
 
+void Collision_BoundingBoxOfBrushTraceSegment(const colbrushf_t *start, const colbrushf_t *end, vec3_t mins, vec3_t maxs, float startfrac, float endfrac);
+
 #endif