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, int *hitent, int hitsupercontentsmask)
36 float maxfrac, maxrealfrac;
39 float tracemins[3], tracemaxs[3];
41 float tempnormal[3], starttransformed[3], endtransformed[3];
43 memset (&trace, 0 , sizeof(trace_t));
45 trace.realfraction = 1;
46 VectorCopy (end, trace.endpos);
50 Mod_CheckLoaded(cl.worldmodel);
51 if (cl.worldmodel && cl.worldmodel->TraceBox)
52 cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, start, end, end, hitsupercontentsmask);
55 VectorCopy(trace.plane.normal, normal);
56 cl_traceline_startsupercontents = trace.startsupercontents;
57 maxfrac = trace.fraction;
58 maxrealfrac = trace.realfraction;
60 if (hitbmodels && cl_num_brushmodel_entities)
62 tracemins[0] = min(start[0], end[0]);
63 tracemaxs[0] = max(start[0], end[0]);
64 tracemins[1] = min(start[1], end[1]);
65 tracemaxs[1] = max(start[1], end[1]);
66 tracemins[2] = min(start[2], end[2]);
67 tracemaxs[2] = max(start[2], end[2]);
69 // look for embedded bmodels
70 for (n = 0;n < cl_num_brushmodel_entities;n++)
72 ent = &cl_entities[cl_brushmodel_entities[n]].render;
73 if (!BoxesOverlap(tracemins, tracemaxs, ent->mins, ent->maxs))
76 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
77 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
79 if (ent->model && ent->model->TraceBox)
80 ent->model->TraceBox(ent->model, 0, &trace, starttransformed, starttransformed, endtransformed, endtransformed, hitsupercontentsmask);
82 cl_traceline_startsupercontents |= trace.startsupercontents;
83 if (maxrealfrac > trace.realfraction)
86 *hitent = cl_brushmodel_entities[n];
87 maxfrac = trace.fraction;
88 maxrealfrac = trace.realfraction;
91 VectorCopy(trace.plane.normal, tempnormal);
92 Matrix4x4_Transform3x3(&ent->matrix, tempnormal, normal);
97 maxfrac = bound(0, maxfrac, 1);
98 maxrealfrac = bound(0, maxrealfrac, 1);
99 //if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
101 VectorLerp(start, maxfrac, end, impact);
105 float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int *hitent, entity_render_t *ignoreent)
107 float maxfrac, maxrealfrac;
109 entity_render_t *ent;
110 float tracemins[3], tracemaxs[3];
112 float tempnormal[3], starttransformed[3], endtransformed[3];
114 memset (&trace, 0 , sizeof(trace_t));
116 trace.realfraction = 1;
117 VectorCopy (end, trace.endpos);
121 Mod_CheckLoaded(cl.worldmodel);
122 if (cl.worldmodel && cl.worldmodel->TraceBox)
123 cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, start, end, end, SUPERCONTENTS_SOLID);
126 VectorCopy(trace.plane.normal, normal);
127 cl_traceline_startsupercontents = trace.startsupercontents;
128 maxfrac = trace.fraction;
129 maxrealfrac = trace.realfraction;
131 tracemins[0] = min(start[0], end[0]);
132 tracemaxs[0] = max(start[0], end[0]);
133 tracemins[1] = min(start[1], end[1]);
134 tracemaxs[1] = max(start[1], end[1]);
135 tracemins[2] = min(start[2], end[2]);
136 tracemaxs[2] = max(start[2], end[2]);
138 // look for embedded bmodels
139 for (n = 0;n < cl_num_entities;n++)
141 if (!cl_entities_active[n])
143 ent = &cl_entities[n].render;
144 if (!BoxesOverlap(ent->mins, ent->maxs, tracemins, tracemaxs))
146 if (!ent->model || !ent->model->TraceBox)
148 // if transparent and not selectable, skip entity
149 if (!(cl_entities[n].state_current.effects & EF_SELECTABLE) && (ent->alpha < 1 || (ent->effects & (EF_ADDITIVE | EF_NODEPTHTEST))))
151 if (ent == ignoreent)
153 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
154 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
156 if (ent->model && ent->model->TraceBox)
157 ent->model->TraceBox(ent->model, ent->frameblend[0].frame, &trace, starttransformed, starttransformed, endtransformed, endtransformed, SUPERCONTENTS_SOLID);
159 cl_traceline_startsupercontents |= trace.startsupercontents;
160 if (maxrealfrac > trace.realfraction)
164 maxfrac = trace.fraction;
165 maxrealfrac = trace.realfraction;
168 VectorCopy(trace.plane.normal, tempnormal);
169 Matrix4x4_Transform3x3(&ent->matrix, tempnormal, normal);
173 maxfrac = bound(0, maxfrac, 1);
174 maxrealfrac = bound(0, maxrealfrac, 1);
175 //if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
177 VectorLerp(start, maxfrac, end, impact);
181 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
183 // FIXME: check multiple brush models
184 if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
185 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
188 int CL_PointQ1Contents(const vec3_t p)
190 CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
191 return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, cl_traceline_startsupercontents);
193 // FIXME: check multiple brush models
194 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
195 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);
200 int CL_PointSuperContents(const vec3_t p)
202 CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
203 return cl_traceline_startsupercontents;
205 // FIXME: check multiple brush models
206 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
207 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);