+
+
+// surface querying
+
+static dp_model_t *getmodel(prvm_edict_t *ed)
+{
+ switch(PRVM_GetProgNr())
+ {
+ case PRVM_SERVERPROG:
+ return SV_GetModelFromEdict(ed);
+ case PRVM_CLIENTPROG:
+ return CL_GetModelFromEdict(ed);
+ default:
+ return NULL;
+ }
+}
+
+static void getmatrix(prvm_edict_t *ed, matrix4x4_t *out)
+{
+ switch(PRVM_GetProgNr())
+ {
+ case PRVM_SERVERPROG:
+ SV_GetEntityMatrix(ed, out, false);
+ break;
+ case PRVM_CLIENTPROG:
+ CL_GetEntityMatrix(ed, out, false);
+ break;
+ default:
+ *out = identitymatrix;
+ break;
+ }
+}
+
+static void applytransform_forward(const vec3_t in, prvm_edict_t *ed, vec3_t out)
+{
+ matrix4x4_t m;
+ getmatrix(ed, &m);
+ Matrix4x4_Transform(&m, in, out);
+}
+
+static void applytransform_forward_direction(const vec3_t in, prvm_edict_t *ed, vec3_t out)
+{
+ matrix4x4_t m;
+ getmatrix(ed, &m);
+ Matrix4x4_Transform3x3(&m, in, out);
+}
+
+static void applytransform_inverted(const vec3_t in, prvm_edict_t *ed, vec3_t out)
+{
+ matrix4x4_t m, n;
+ getmatrix(ed, &m);
+ Matrix4x4_Invert_Full(&m, &n);
+ Matrix4x4_Transform3x3(&n, in, out);
+}
+
+static void applytransform_forward_normal(const vec3_t in, prvm_edict_t *ed, vec3_t out)
+{
+ matrix4x4_t m;
+ float p[4];
+ getmatrix(ed, &m);
+ Matrix4x4_TransformPositivePlane(&m, in[0], in[1], in[2], 0, p);
+ VectorCopy(p, out);
+}
+
+static void clippointtosurface(dp_model_t *model, msurface_t *surface, vec3_t p, vec3_t out)
+{
+ int i, j, k;
+ float *v[3], facenormal[3], edgenormal[3], sidenormal[3], temp[3], offsetdist, dist, bestdist;
+ const int *e;
+ bestdist = 1000000000;
+ VectorCopy(p, out);
+ for (i = 0, e = (model->surfmesh.data_element3i + 3 * surface->num_firsttriangle);i < surface->num_triangles;i++, e += 3)
+ {
+ // clip original point to each triangle of the surface and find the
+ // triangle that is closest
+ v[0] = model->surfmesh.data_vertex3f + e[0] * 3;
+ v[1] = model->surfmesh.data_vertex3f + e[1] * 3;
+ v[2] = model->surfmesh.data_vertex3f + e[2] * 3;
+ TriangleNormal(v[0], v[1], v[2], facenormal);
+ VectorNormalize(facenormal);
+ offsetdist = DotProduct(v[0], facenormal) - DotProduct(p, facenormal);
+ VectorMA(p, offsetdist, facenormal, temp);
+ for (j = 0, k = 2;j < 3;k = j, j++)
+ {
+ VectorSubtract(v[k], v[j], edgenormal);
+ CrossProduct(edgenormal, facenormal, sidenormal);
+ VectorNormalize(sidenormal);
+ offsetdist = DotProduct(v[k], sidenormal) - DotProduct(temp, sidenormal);
+ if (offsetdist < 0)
+ VectorMA(temp, offsetdist, sidenormal, temp);
+ }
+ dist = VectorDistance2(temp, p);
+ if (bestdist > dist)
+ {
+ bestdist = dist;
+ VectorCopy(temp, out);
+ }
+ }
+}
+
+static msurface_t *getsurface(dp_model_t *model, int surfacenum)
+{
+ if (surfacenum < 0 || surfacenum >= model->nummodelsurfaces)
+ return NULL;
+ return model->data_surfaces + surfacenum + model->firstmodelsurface;
+}
+
+
+//PF_getsurfacenumpoints, // #434 float(entity e, float s) getsurfacenumpoints = #434;
+void VM_getsurfacenumpoints(void)
+{
+ dp_model_t *model;
+ msurface_t *surface;
+ VM_SAFEPARMCOUNT(2, VM_getsurfacenumpoints);
+ // return 0 if no such surface
+ if (!(model = getmodel(PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ {
+ PRVM_G_FLOAT(OFS_RETURN) = 0;
+ return;
+ }
+
+ // note: this (incorrectly) assumes it is a simple polygon
+ PRVM_G_FLOAT(OFS_RETURN) = surface->num_vertices;
+}
+//PF_getsurfacepoint, // #435 vector(entity e, float s, float n) getsurfacepoint = #435;
+void VM_getsurfacepoint(void)
+{
+ prvm_edict_t *ed;
+ dp_model_t *model;
+ msurface_t *surface;
+ int pointnum;
+ VM_SAFEPARMCOUNT(3, VM_getsurfacepoint);
+ VectorClear(PRVM_G_VECTOR(OFS_RETURN));
+ ed = PRVM_G_EDICT(OFS_PARM0);
+ if (!(model = getmodel(ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ // note: this (incorrectly) assumes it is a simple polygon
+ pointnum = (int)PRVM_G_FLOAT(OFS_PARM2);
+ if (pointnum < 0 || pointnum >= surface->num_vertices)
+ return;
+ applytransform_forward(&(model->surfmesh.data_vertex3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, PRVM_G_VECTOR(OFS_RETURN));
+}
+//PF_getsurfacepointattribute, // #486 vector(entity e, float s, float n, float a) getsurfacepointattribute = #486;
+// float SPA_POSITION = 0;
+// float SPA_S_AXIS = 1;
+// float SPA_T_AXIS = 2;
+// float SPA_R_AXIS = 3; // same as SPA_NORMAL
+// float SPA_TEXCOORDS0 = 4;
+// float SPA_LIGHTMAP0_TEXCOORDS = 5;
+// float SPA_LIGHTMAP0_COLOR = 6;
+void VM_getsurfacepointattribute(void)
+{
+ prvm_edict_t *ed;
+ dp_model_t *model;
+ msurface_t *surface;
+ int pointnum;
+ int attributetype;
+
+ VM_SAFEPARMCOUNT(4, VM_getsurfacepoint);
+ VectorClear(PRVM_G_VECTOR(OFS_RETURN));
+ ed = PRVM_G_EDICT(OFS_PARM0);
+ if (!(model = getmodel(ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ pointnum = (int)PRVM_G_FLOAT(OFS_PARM2);
+ if (pointnum < 0 || pointnum >= surface->num_vertices)
+ return;
+ attributetype = (int) PRVM_G_FLOAT(OFS_PARM3);
+
+ switch( attributetype ) {
+ // float SPA_POSITION = 0;
+ case 0:
+ applytransform_forward(&(model->surfmesh.data_vertex3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, PRVM_G_VECTOR(OFS_RETURN));
+ break;
+ // float SPA_S_AXIS = 1;
+ case 1:
+ applytransform_forward_direction(&(model->surfmesh.data_svector3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, PRVM_G_VECTOR(OFS_RETURN));
+ break;
+ // float SPA_T_AXIS = 2;
+ case 2:
+ applytransform_forward_direction(&(model->surfmesh.data_tvector3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, PRVM_G_VECTOR(OFS_RETURN));
+ break;
+ // float SPA_R_AXIS = 3; // same as SPA_NORMAL
+ case 3:
+ applytransform_forward_direction(&(model->surfmesh.data_normal3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, PRVM_G_VECTOR(OFS_RETURN));
+ break;
+ // float SPA_TEXCOORDS0 = 4;
+ case 4: {
+ float *ret = PRVM_G_VECTOR(OFS_RETURN);
+ float *texcoord = &(model->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[pointnum * 2];
+ ret[0] = texcoord[0];
+ ret[1] = texcoord[1];
+ ret[2] = 0.0f;
+ break;
+ }
+ // float SPA_LIGHTMAP0_TEXCOORDS = 5;
+ case 5: {
+ float *ret = PRVM_G_VECTOR(OFS_RETURN);
+ float *texcoord = &(model->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[pointnum * 2];
+ ret[0] = texcoord[0];
+ ret[1] = texcoord[1];
+ ret[2] = 0.0f;
+ break;
+ }
+ // float SPA_LIGHTMAP0_COLOR = 6;
+ case 6:
+ // ignore alpha for now..
+ VectorCopy( &(model->surfmesh.data_lightmapcolor4f + 4 * surface->num_firstvertex)[pointnum * 4], PRVM_G_VECTOR(OFS_RETURN));
+ break;
+ default:
+ VectorSet( PRVM_G_VECTOR(OFS_RETURN), 0.0f, 0.0f, 0.0f );
+ break;
+ }
+}
+//PF_getsurfacenormal, // #436 vector(entity e, float s) getsurfacenormal = #436;
+void VM_getsurfacenormal(void)
+{
+ dp_model_t *model;
+ msurface_t *surface;
+ vec3_t normal;
+ VM_SAFEPARMCOUNT(2, VM_getsurfacenormal);
+ VectorClear(PRVM_G_VECTOR(OFS_RETURN));
+ if (!(model = getmodel(PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ // note: this only returns the first triangle, so it doesn't work very
+ // well for curved surfaces or arbitrary meshes
+ TriangleNormal((model->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), (model->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + 3, (model->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + 6, normal);
+ applytransform_forward_normal(normal, PRVM_G_EDICT(OFS_PARM0), PRVM_G_VECTOR(OFS_RETURN));
+ VectorNormalize(PRVM_G_VECTOR(OFS_RETURN));
+}
+//PF_getsurfacetexture, // #437 string(entity e, float s) getsurfacetexture = #437;
+void VM_getsurfacetexture(void)
+{
+ dp_model_t *model;
+ msurface_t *surface;
+ VM_SAFEPARMCOUNT(2, VM_getsurfacetexture);
+ PRVM_G_INT(OFS_RETURN) = OFS_NULL;
+ if (!(model = getmodel(PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(surface->texture->name);
+}
+//PF_getsurfacenearpoint, // #438 float(entity e, vector p) getsurfacenearpoint = #438;
+void VM_getsurfacenearpoint(void)
+{
+ int surfacenum, best;
+ vec3_t clipped, p;
+ vec_t dist, bestdist;
+ prvm_edict_t *ed;
+ dp_model_t *model;
+ msurface_t *surface;
+ vec_t *point;
+ VM_SAFEPARMCOUNT(2, VM_getsurfacenearpoint);
+ PRVM_G_FLOAT(OFS_RETURN) = -1;
+ ed = PRVM_G_EDICT(OFS_PARM0);
+ point = PRVM_G_VECTOR(OFS_PARM1);
+
+ if (!ed || ed->priv.server->free)
+ return;
+ model = getmodel(ed);
+ if (!model || !model->num_surfaces)
+ return;
+
+ applytransform_inverted(point, ed, p);
+ best = -1;
+ bestdist = 1000000000;
+ for (surfacenum = 0;surfacenum < model->nummodelsurfaces;surfacenum++)
+ {
+ surface = model->data_surfaces + surfacenum + model->firstmodelsurface;
+ // first see if the nearest point on the surface's box is closer than the previous match
+ clipped[0] = bound(surface->mins[0], p[0], surface->maxs[0]) - p[0];
+ clipped[1] = bound(surface->mins[1], p[1], surface->maxs[1]) - p[1];
+ clipped[2] = bound(surface->mins[2], p[2], surface->maxs[2]) - p[2];
+ dist = VectorLength2(clipped);
+ if (dist < bestdist)
+ {
+ // it is, check the nearest point on the actual geometry
+ clippointtosurface(model, surface, p, clipped);
+ VectorSubtract(clipped, p, clipped);
+ dist += VectorLength2(clipped);
+ if (dist < bestdist)
+ {
+ // that's closer too, store it as the best match
+ best = surfacenum;
+ bestdist = dist;
+ }
+ }
+ }
+ PRVM_G_FLOAT(OFS_RETURN) = best;
+}
+//PF_getsurfaceclippedpoint, // #439 vector(entity e, float s, vector p) getsurfaceclippedpoint = #439;
+void VM_getsurfaceclippedpoint(void)
+{
+ prvm_edict_t *ed;
+ dp_model_t *model;
+ msurface_t *surface;
+ vec3_t p, out;
+ VM_SAFEPARMCOUNT(3, VM_te_getsurfaceclippedpoint);
+ VectorClear(PRVM_G_VECTOR(OFS_RETURN));
+ ed = PRVM_G_EDICT(OFS_PARM0);
+ if (!(model = getmodel(ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ applytransform_inverted(PRVM_G_VECTOR(OFS_PARM2), ed, p);
+ clippointtosurface(model, surface, p, out);
+ VectorAdd(out, ed->fields.server->origin, PRVM_G_VECTOR(OFS_RETURN));
+}
+
+//PF_getsurfacenumtriangles, // #??? float(entity e, float s) getsurfacenumtriangles = #???;
+void VM_getsurfacenumtriangles(void)
+{
+ dp_model_t *model;
+ msurface_t *surface;
+ VM_SAFEPARMCOUNT(2, VM_SV_getsurfacenumtriangles);
+ // return 0 if no such surface
+ if (!(model = getmodel(PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ {
+ PRVM_G_FLOAT(OFS_RETURN) = 0;
+ return;
+ }
+
+ // note: this (incorrectly) assumes it is a simple polygon
+ PRVM_G_FLOAT(OFS_RETURN) = surface->num_triangles;
+}
+//PF_getsurfacetriangle, // #??? vector(entity e, float s, float n) getsurfacetriangle = #???;
+void VM_getsurfacetriangle(void)
+{
+ prvm_edict_t *ed;
+ dp_model_t *model;
+ msurface_t *surface;
+ int trinum;
+ VM_SAFEPARMCOUNT(3, VM_SV_getsurfacetriangle);
+ VectorClear(PRVM_G_VECTOR(OFS_RETURN));
+ ed = PRVM_G_EDICT(OFS_PARM0);
+ if (!(model = getmodel(ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
+ return;
+ trinum = (int)PRVM_G_FLOAT(OFS_PARM2);
+ if (trinum < 0 || trinum >= surface->num_triangles)
+ return;
+ // FIXME: implement rotation/scaling
+ VectorCopy(&(model->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[trinum * 3], PRVM_G_VECTOR(OFS_RETURN));
+}
projects / xonotic / darkplaces.git / blobdiff