fix bugs with bbox vs bbox traces (the collision box's planes didn't have correct...

[xonotic/darkplaces.git] / collision.h

diff --git a/collision.h b/collision.h
index 49dde7480128d239cacd8f103559e2960f60cb5d..23370c69f084af95999e98c767f79974fb720040 100644 (file)
--- a/collision.h
+++ b/collision.h
@@ -9,12 +9,15 @@ typedef struct plane_s
 }
 plane_t;
 
+struct texture_s;
 typedef struct trace_s
 {
        // if true, the entire trace was in solid (see hitsupercontentsmask)
        int allsolid;
        // if true, the initial point was in solid (see hitsupercontentsmask)
        int startsolid;
+       // this is set to true in world.c if startsolid was set in a trace against a SOLID_BSP entity, in other words this is true if the entity is stuck in a door or wall, but not if stuck in another normal entity
+       int bmodelstartsolid;
        // if true, the trace passed through empty somewhere
        // (set only by Q1BSP tracing)
        int inopen;
@@ -24,6 +27,10 @@ typedef struct trace_s
        // fraction of the total distance that was traveled before impact
        // (1.0 = did not hit anything)
        double fraction;
+       // like fraction but is not nudged away from the surface (better for
+       // comparisons between two trace structs, as only one nudge for the final
+       // result is ever needed)
+       double realfraction;
        // final position of the trace (simply a point between start and end)
        double endpos[3];
        // surface normal at impact (not really correct for edge collisions)
@@ -36,6 +43,12 @@ typedef struct trace_s
        int hitsupercontentsmask;
        // the supercontents mask at the start point
        int startsupercontents;
+       // the supercontents of the impacted surface
+       int hitsupercontents;
+       // the q3 surfaceflags of the impacted surface
+       int hitq3surfaceflags;
+       // the texture of the impacted surface
+       struct texture_s *hittexture;
        // initially false, set when the start leaf is found
        // (set only by Q1BSP tracing and entity box tracing)
        int startfound;
@@ -43,7 +56,7 @@ typedef struct trace_s
 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, int hitsupercontentsmask, int boxsupercontents);
+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, int boxq3surfaceflags, texture_t *boxtexture);
 
 typedef struct colpointf_s
 {
@@ -55,6 +68,9 @@ typedef struct colplanef_s
 {
        float normal[3];
        float dist;
+       int supercontents;
+       int q3surfaceflags;
+       struct texture_s *texture;
 }
 colplanef_t;
 
@@ -76,18 +92,38 @@ typedef struct colbrushf_s
        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, int numtriangles, int supercontents);
 void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush);
 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);
+colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const colplanef_t *originalplanes);
 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, 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, int q3surfaceflags, texture_t *texture, 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_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_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, int q3surfaceflags, texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs);
+void Collision_TracePointBrushFloat(trace_t *trace, const vec3_t point, const colbrushf_t *thatbrush);
+
+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, int q3surfaceflags, texture_t *texture);
+
+colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs, int supercontents, int q3surfaceflags, texture_t *texture);
+
+void Collision_BoundingBoxOfBrushTraceSegment(const colbrushf_t *start, const colbrushf_t *end, vec3_t mins, vec3_t maxs, float startfrac, float endfrac);
+
+float Collision_ClipTrace_Line_Sphere(double *linestart, double *lineend, double *sphereorigin, double sphereradius, double *impactpoint, double *impactnormal);
+void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2, int supercontents, int q3surfaceflags, texture_t *texture);
 
-colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs);
+// this enables rather large debugging spew!
+// settings:
+// 0 = no spew
+// 1 = spew trace calls if something odd is happening
+// 2 = spew trace calls always
+// 3 = spew detailed trace flow (bsp tree recursion info)
+#define COLLISIONPARANOID 0
 
 #endif