+ if ((val = PRVM_GETEDICTFIELDVALUE(ent, eval_tag_entity)) && val->edict)
+ { // DP_GFX_QUAKE3MODELTAGS, scan all chain and stop on unattached entity
+ attachloop = 0;
+ do
+ {
+ attachent = PRVM_EDICT_NUM(val->edict); // to this it entity our entity is attached
+ val = PRVM_GETEDICTFIELDVALUE(ent, eval_tag_index);
+ if (val->_float >= 1 && attachent->fields.server->modelindex >= 1 && attachent->fields.server->modelindex < MAX_MODELS && (model = sv.models[(int)attachent->fields.server->modelindex]) && model->animscenes && attachent->fields.server->frame >= 0 && attachent->fields.server->frame < model->numframes)
+ Mod_Alias_GetTagMatrix(model, model->animscenes[(int)attachent->fields.server->frame].firstframe, val->_float - 1, &attachmatrix);
+ else
+ Matrix4x4_CreateIdentity(&attachmatrix);
+
+ // apply transformation by child entity matrix
+ val = PRVM_GETEDICTFIELDVALUE(ent, eval_scale);
+ if (val->_float == 0)
+ val->_float = 1;
+ Matrix4x4_CreateFromQuakeEntity(&entitymatrix, ent->fields.server->origin[0], ent->fields.server->origin[1], ent->fields.server->origin[2], -ent->fields.server->angles[0], ent->fields.server->angles[1], ent->fields.server->angles[2], val->_float);
+ Matrix4x4_Concat(out, &entitymatrix, &tagmatrix);
+ out->m[0][3] = entitymatrix.m[0][3] + val->_float*(entitymatrix.m[0][0]*tagmatrix.m[0][3] + entitymatrix.m[0][1]*tagmatrix.m[1][3] + entitymatrix.m[0][2]*tagmatrix.m[2][3]);
+ out->m[1][3] = entitymatrix.m[1][3] + val->_float*(entitymatrix.m[1][0]*tagmatrix.m[0][3] + entitymatrix.m[1][1]*tagmatrix.m[1][3] + entitymatrix.m[1][2]*tagmatrix.m[2][3]);
+ out->m[2][3] = entitymatrix.m[2][3] + val->_float*(entitymatrix.m[2][0]*tagmatrix.m[0][3] + entitymatrix.m[2][1]*tagmatrix.m[1][3] + entitymatrix.m[2][2]*tagmatrix.m[2][3]);
+ Matrix4x4_Copy(&tagmatrix, out);
+
+ // finally transformate by matrix of tag on parent entity
+ Matrix4x4_Concat(out, &attachmatrix, &tagmatrix);
+ out->m[0][3] = attachmatrix.m[0][3] + attachmatrix.m[0][0]*tagmatrix.m[0][3] + attachmatrix.m[0][1]*tagmatrix.m[1][3] + attachmatrix.m[0][2]*tagmatrix.m[2][3];
+ out->m[1][3] = attachmatrix.m[1][3] + attachmatrix.m[1][0]*tagmatrix.m[0][3] + attachmatrix.m[1][1]*tagmatrix.m[1][3] + attachmatrix.m[1][2]*tagmatrix.m[2][3];
+ out->m[2][3] = attachmatrix.m[2][3] + attachmatrix.m[2][0]*tagmatrix.m[0][3] + attachmatrix.m[2][1]*tagmatrix.m[1][3] + attachmatrix.m[2][2]*tagmatrix.m[2][3];
+ Matrix4x4_Copy(&tagmatrix, out);
+
+ ent = attachent;
+ attachloop += 1;
+ if (attachloop > 255) // prevent runaway looping
+ return 5;
+ }
+ while ((val = PRVM_GETEDICTFIELDVALUE(ent, eval_tag_entity)) && val->edict);
+ }