3 #include "cl_collision.h"
7 typedef struct physentity_s
9 // this may be a entity_t, or a prvm_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 trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitbmodels, int *hitent, int hitsupercontentsmask, qboolean hitplayers)
36 vec3_t tracemins, tracemaxs;
37 trace_t cliptrace, trace;
39 vec3_t starttransformed, endtransformed;
40 vec3_t entmins, entmaxs;
41 vec_t *playermins, *playermaxs;
43 memset (&cliptrace, 0 , sizeof(trace_t));
44 cliptrace.fraction = 1;
45 cliptrace.realfraction = 1;
47 if (cl.worldmodel && cl.worldmodel->TraceBox)
48 cl.worldmodel->TraceBox(cl.worldmodel, 0, &cliptrace, start, mins, maxs, end, hitsupercontentsmask);
53 if (hitbmodels && cl.num_brushmodel_entities)
55 tracemins[0] = min(start[0], end[0]) + mins[0];
56 tracemaxs[0] = max(start[0], end[0]) + maxs[0];
57 tracemins[1] = min(start[1], end[1]) + mins[1];
58 tracemaxs[1] = max(start[1], end[1]) + maxs[1];
59 tracemins[2] = min(start[2], end[2]) + mins[2];
60 tracemaxs[2] = max(start[2], end[2]) + maxs[2];
62 // look for embedded bmodels
63 for (n = 0;n < cl.num_brushmodel_entities;n++)
65 ent = &cl.entities[cl.brushmodel_entities[n]].render;
66 if (!BoxesOverlap(tracemins, tracemaxs, ent->mins, ent->maxs))
69 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
70 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
72 memset (&trace, 0 , sizeof(trace_t));
74 trace.realfraction = 1;
76 if (ent->model && ent->model->TraceBox)
77 ent->model->TraceBox(ent->model, 0, &trace, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask);
79 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
81 cliptrace.allsolid = true;
84 cliptrace.startsolid = true;
85 if (cliptrace.realfraction == 1)
87 *hitent = cl.brushmodel_entities[n];
89 // don't set this except on the world, because it can easily confuse
90 // monsters underwater if there's a bmodel involved in the trace
91 // (inopen && inwater is how they check water visibility)
93 // cliptrace.inopen = true;
95 cliptrace.inwater = true;
96 if (trace.realfraction < cliptrace.realfraction)
98 cliptrace.fraction = trace.fraction;
99 cliptrace.realfraction = trace.realfraction;
100 cliptrace.plane = trace.plane;
102 *hitent = cl.brushmodel_entities[n];
103 Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
104 cliptrace.hitsupercontents = trace.hitsupercontents;
105 cliptrace.hitq3surfaceflags = trace.hitq3surfaceflags;
106 cliptrace.hittexture = trace.hittexture;
108 cliptrace.startsupercontents |= trace.startsupercontents;
113 tracemins[0] = min(start[0], end[0]) + mins[0];
114 tracemaxs[0] = max(start[0], end[0]) + maxs[0];
115 tracemins[1] = min(start[1], end[1]) + mins[1];
116 tracemaxs[1] = max(start[1], end[1]) + maxs[1];
117 tracemins[2] = min(start[2], end[2]) + mins[2];
118 tracemaxs[2] = max(start[2], end[2]) + maxs[2];
120 for (n = 1;n < cl.maxclients+1;n++)
122 if (n != cl.playerentity)
124 ent = &cl.entities[n].render;
126 playermins = cl.playerstandmins;
127 playermaxs = cl.playerstandmaxs;
128 Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
129 VectorAdd(origin, playermins, entmins);
130 VectorAdd(origin, playermaxs, entmaxs);
131 if (!BoxesOverlap(tracemins, tracemaxs, entmins, entmaxs))
134 memset (&trace, 0 , sizeof(trace_t));
136 trace.realfraction = 1;
138 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
139 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
140 Collision_ClipTrace_Box(&trace, playermins, playermaxs, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask, SUPERCONTENTS_BODY, 0, NULL);
142 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
144 cliptrace.allsolid = true;
145 if (trace.startsolid)
147 cliptrace.startsolid = true;
148 if (cliptrace.realfraction == 1)
152 // don't set this except on the world, because it can easily confuse
153 // monsters underwater if there's a bmodel involved in the trace
154 // (inopen && inwater is how they check water visibility)
156 // cliptrace.inopen = true;
158 cliptrace.inwater = true;
159 if (trace.realfraction < cliptrace.realfraction)
161 cliptrace.fraction = trace.fraction;
162 cliptrace.realfraction = trace.realfraction;
163 cliptrace.plane = trace.plane;
166 Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
167 cliptrace.hitsupercontents = trace.hitsupercontents;
168 cliptrace.hitq3surfaceflags = trace.hitq3surfaceflags;
169 cliptrace.hittexture = trace.hittexture;
171 cliptrace.startsupercontents |= trace.startsupercontents;
175 cliptrace.fraction = bound(0, cliptrace.fraction, 1);
176 cliptrace.realfraction = bound(0, cliptrace.realfraction, 1);
177 VectorLerp(start, cliptrace.fraction, end, cliptrace.endpos);
181 float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int *hitent, entity_render_t *ignoreent)
183 float maxfrac, maxrealfrac;
185 entity_render_t *ent;
186 float tracemins[3], tracemaxs[3];
188 float tempnormal[3], starttransformed[3], endtransformed[3];
190 memset (&trace, 0 , sizeof(trace_t));
192 trace.realfraction = 1;
193 VectorCopy (end, trace.endpos);
197 if (cl.worldmodel && cl.worldmodel->TraceBox)
198 cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, vec3_origin, vec3_origin, end, SUPERCONTENTS_SOLID);
201 VectorCopy(trace.plane.normal, normal);
202 maxfrac = trace.fraction;
203 maxrealfrac = trace.realfraction;
205 tracemins[0] = min(start[0], end[0]);
206 tracemaxs[0] = max(start[0], end[0]);
207 tracemins[1] = min(start[1], end[1]);
208 tracemaxs[1] = max(start[1], end[1]);
209 tracemins[2] = min(start[2], end[2]);
210 tracemaxs[2] = max(start[2], end[2]);
212 // look for embedded bmodels
213 for (n = 0;n < cl.num_entities;n++)
215 if (!cl.entities_active[n])
217 ent = &cl.entities[n].render;
218 if (!BoxesOverlap(ent->mins, ent->maxs, tracemins, tracemaxs))
220 if (!ent->model || !ent->model->TraceBox)
222 if ((ent->flags & RENDER_EXTERIORMODEL) && !chase_active.integer)
224 // if transparent and not selectable, skip entity
225 if (!(cl.entities[n].state_current.effects & EF_SELECTABLE) && (ent->alpha < 1 || (ent->effects & (EF_ADDITIVE | EF_NODEPTHTEST))))
227 if (ent == ignoreent)
229 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
230 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
232 //if (ent->model && ent->model->TraceBox)
233 ent->model->TraceBox(ent->model, ent->frameblend[0].frame, &trace, starttransformed, vec3_origin, vec3_origin, endtransformed, SUPERCONTENTS_SOLID);
235 if (maxrealfrac > trace.realfraction)
239 maxfrac = trace.fraction;
240 maxrealfrac = trace.realfraction;
243 VectorCopy(trace.plane.normal, tempnormal);
244 Matrix4x4_Transform3x3(&ent->matrix, tempnormal, normal);
248 maxfrac = bound(0, maxfrac, 1);
249 maxrealfrac = bound(0, maxrealfrac, 1);
250 //if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
252 VectorLerp(start, maxfrac, end, impact);
256 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
258 // FIXME: check multiple brush models
259 if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
260 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
263 int CL_PointSuperContents(const vec3_t p)
265 return CL_TraceBox(p, vec3_origin, vec3_origin, p, true, NULL, 0, false).startsupercontents;