3 #include "cl_collision.h"
7 typedef struct physentity_s
9 // this may be a entity_t, or a edict_t, or whatever
12 // can be NULL if it is a bbox object
15 // node this entity crosses
16 // for avoiding unnecessary collisions
19 // matrix for converting from model to world coordinates
20 double modeltoworldmatrix[3][4];
22 // matrix for converting from world to model coordinates
23 double worldtomodelmatrix[3][4];
25 // if this is a bmodel, this is used for culling it quickly
26 // if this is not a bmodel, this is used for actual collisions
27 double mins[3], maxs[3];
32 int cl_traceline_startsupercontents;
34 float CL_TraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int hitbmodels, entity_render_t **hitent, int hitsupercontentsmask)
36 float maxfrac, maxrealfrac;
39 float tracemins[3], tracemaxs[3];
41 matrix4x4_t matrix, imatrix;
42 float tempnormal[3], starttransformed[3], endtransformed[3];
44 memset (&trace, 0 , sizeof(trace_t));
46 trace.realfraction = 1;
47 VectorCopy (end, trace.endpos);
50 *hitent = &cl_entities[0].render;
51 Mod_CheckLoaded(cl.worldmodel);
52 if (cl.worldmodel && cl.worldmodel->TraceBox)
53 cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, start, end, end, hitsupercontentsmask);
56 VectorCopy(trace.plane.normal, normal);
57 cl_traceline_startsupercontents = trace.startsupercontents;
58 maxfrac = trace.fraction;
59 maxrealfrac = trace.realfraction;
61 if (hitbmodels && cl_num_brushmodel_entities)
63 tracemins[0] = min(start[0], end[0]);
64 tracemaxs[0] = max(start[0], end[0]);
65 tracemins[1] = min(start[1], end[1]);
66 tracemaxs[1] = max(start[1], end[1]);
67 tracemins[2] = min(start[2], end[2]);
68 tracemaxs[2] = max(start[2], end[2]);
70 // look for embedded bmodels
71 for (n = 0;n < cl_num_brushmodel_entities;n++)
73 ent = cl_brushmodel_entities[n];
74 if (ent->mins[0] > tracemaxs[0] || ent->maxs[0] < tracemins[0]
75 || ent->mins[1] > tracemaxs[1] || ent->maxs[1] < tracemins[1]
76 || ent->mins[2] > tracemaxs[2] || ent->maxs[2] < tracemins[2])
79 Matrix4x4_CreateFromQuakeEntity(&matrix, ent->origin[0], ent->origin[1], ent->origin[2], ent->angles[0], ent->angles[1], ent->angles[2], 1);
80 Matrix4x4_Invert_Simple(&imatrix, &matrix);
81 Matrix4x4_Transform(&imatrix, start, starttransformed);
82 Matrix4x4_Transform(&imatrix, end, endtransformed);
84 if (ent->model && ent->model->TraceBox)
85 ent->model->TraceBox(ent->model, 0, &trace, starttransformed, starttransformed, endtransformed, endtransformed, hitsupercontentsmask);
87 cl_traceline_startsupercontents |= trace.startsupercontents;
88 if (maxrealfrac > trace.realfraction)
92 maxfrac = trace.fraction;
93 maxrealfrac = trace.realfraction;
96 VectorCopy(trace.plane.normal, tempnormal);
97 Matrix4x4_Transform3x3(&matrix, tempnormal, normal);
102 if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
104 VectorLerp(start, maxfrac, end, impact);
108 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
110 // FIXME: check multiple brush models
111 if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
112 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
115 int CL_PointQ1Contents(const vec3_t p)
117 CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
118 return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, cl_traceline_startsupercontents);
120 // FIXME: check multiple brush models
121 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
122 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);
127 int CL_PointSuperContents(const vec3_t p)
129 CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
130 return cl_traceline_startsupercontents;
132 // FIXME: check multiple brush models
133 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
134 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);