more q3bsp work (and no it still doesn't work right)
[divverent/darkplaces.git] / cl_collision.c
1
2 #include "quakedef.h"
3 #include "cl_collision.h"
4
5 /*
6 // not yet used
7 typedef struct physentity_s
8 {
9         // this may be a entity_t, or a edict_t, or whatever
10         void *realentity;
11
12         // can be NULL if it is a bbox object
13         model_t *bmodel;
14
15         // node this entity crosses
16         // for avoiding unnecessary collisions
17         physnode_t *node;
18
19         // matrix for converting from model to world coordinates
20         double modeltoworldmatrix[3][4];
21
22         // matrix for converting from world to model coordinates
23         double worldtomodelmatrix[3][4];
24
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];
28 }
29 physentity_t;
30 */
31
32 int cl_traceline_startsupercontents;
33
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)
35 {
36         float maxfrac;
37         int n;
38         entity_render_t *ent;
39         float tracemins[3], tracemaxs[3];
40         trace_t trace;
41         matrix4x4_t matrix, imatrix;
42         float tempnormal[3], starttransformed[3], endtransformed[3];
43
44         if (hitent)
45                 *hitent = NULL;
46         Mod_CheckLoaded(cl.worldmodel);
47         if (cl.worldmodel && cl.worldmodel->brush.TraceBox)
48                 cl.worldmodel->brush.TraceBox(cl.worldmodel, &trace, start, start, end, end, hitsupercontentsmask);
49
50         if (impact)
51                 VectorLerp(start, trace.fraction, end, impact);
52         if (normal)
53                 VectorCopy(trace.plane.normal, normal);
54         cl_traceline_startsupercontents = trace.startsupercontents;
55         maxfrac = trace.fraction;
56         if (hitent && trace.fraction < 1)
57                 *hitent = &cl_entities[0].render;
58
59         if (hitbmodels && cl_num_brushmodel_entities)
60         {
61                 tracemins[0] = min(start[0], end[0]);
62                 tracemaxs[0] = max(start[0], end[0]);
63                 tracemins[1] = min(start[1], end[1]);
64                 tracemaxs[1] = max(start[1], end[1]);
65                 tracemins[2] = min(start[2], end[2]);
66                 tracemaxs[2] = max(start[2], end[2]);
67
68                 // look for embedded bmodels
69                 for (n = 0;n < cl_num_brushmodel_entities;n++)
70                 {
71                         ent = cl_brushmodel_entities[n];
72                         if (ent->mins[0] > tracemaxs[0] || ent->maxs[0] < tracemins[0]
73                          || ent->mins[1] > tracemaxs[1] || ent->maxs[1] < tracemins[1]
74                          || ent->mins[2] > tracemaxs[2] || ent->maxs[2] < tracemins[2])
75                                 continue;
76
77                         Matrix4x4_CreateFromQuakeEntity(&matrix, ent->origin[0], ent->origin[1], ent->origin[2], ent->angles[0], ent->angles[1], ent->angles[2], 1);
78                         Matrix4x4_Invert_Simple(&imatrix, &matrix);
79                         Matrix4x4_Transform(&imatrix, start, starttransformed);
80                         Matrix4x4_Transform(&imatrix, end, endtransformed);
81
82                         if (ent->model && ent->model->brush.TraceBox)
83                                 ent->model->brush.TraceBox(ent->model, &trace, starttransformed, starttransformed, endtransformed, endtransformed, hitsupercontentsmask);
84
85                         if (trace.allsolid || trace.startsolid || maxfrac > trace.fraction)
86                         {
87                                 cl_traceline_startsupercontents = trace.startsupercontents;
88                                 if (hitent)
89                                         *hitent = ent;
90                                 if (maxfrac > trace.fraction)
91                                 {
92                                         maxfrac = trace.fraction;
93                                         if (impact)
94                                                 VectorLerp(start, trace.fraction, end, impact);
95                                         if (normal)
96                                         {
97                                                 VectorCopy(trace.plane.normal, tempnormal);
98                                                 Matrix4x4_Transform3x3(&matrix, tempnormal, normal);
99                                         }
100                                 }
101                         }
102                 }
103         }
104         if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __LINE__, __FILE__);
105         return maxfrac;
106 }
107
108 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
109 {
110         // FIXME: check multiple brush models
111         if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
112                 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
113 }
114
115 int CL_PointQ1Contents(const vec3_t p)
116 {
117         CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
118         return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, cl_traceline_startsupercontents);
119         /*
120         // FIXME: check multiple brush models
121         if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
122                 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);
123         return 0;
124         */
125 }
126
127 int CL_PointSuperContents(const vec3_t p)
128 {
129         CL_TraceLine(p, p, NULL, NULL, true, NULL, 0);
130         return cl_traceline_startsupercontents;
131         /*
132         // FIXME: check multiple brush models
133         if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
134                 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);
135         return 0;
136         */
137 }
138