implemented metascene spawn point/rot

[laserbrain_demo] / src / metascene.cc

diff --git a/src/metascene.cc b/src/metascene.cc
index 399295f..e0b2b20 100644 (file)
--- a/src/metascene.cc
+++ b/src/metascene.cc
@@ -102,7 +102,8 @@ static bool proc_node(MetaScene *mscn, struct ts_node *node)
 
 
 struct SceneData {
-       std::string walkmesh_regexp;
+       MetaScene *meta;
+       std::string walkmesh_regexp, spawn_regexp;
        std::vector<MaterialEdit> mtledit;
 };
 
@@ -111,6 +112,7 @@ static bool proc_scenefile(MetaScene *mscn, struct ts_node *node)
        const char *fname = ts_get_attr_str(node, "file");
        if(fname) {
                SceneData *sdat = new SceneData;
+               sdat->meta = mscn;
 
                // datapath
                struct ts_attr *adpath = attr_inscope(node, "datapath");
@@ -125,6 +127,28 @@ static bool proc_scenefile(MetaScene *mscn, struct ts_node *node)
                        sdat->walkmesh_regexp = std::string(awmesh->val.str);
                }
 
+               // spawn node
+               struct ts_attr *awspawn = attr_inscope(node, "spawn");
+               if(awspawn) {
+                       switch(awspawn->val.type) {
+                       case TS_VECTOR:
+                               mscn->start_pos = Vec3(awspawn->val.vec[0], awspawn->val.vec[1],
+                                               awspawn->val.vec[2]);
+                               break;
+
+                       case TS_STRING:
+                       default:
+                               sdat->spawn_regexp = std::string(awspawn->val.str);
+                       }
+               }
+               if((awspawn = attr_inscope(node, "spawn_rot")) && awspawn->val.type == TS_VECTOR) {
+                       Quat rot;
+                       rot.rotate(Vec3(1, 0, 0), deg_to_rad(awspawn->val.vec[0]));
+                       rot.rotate(Vec3(0, 1, 0), deg_to_rad(awspawn->val.vec[1]));
+                       rot.rotate(Vec3(0, 0, 1), deg_to_rad(awspawn->val.vec[2]));
+                       mscn->start_rot = rot;
+               }
+
                int namesz = mscn->datamap.lookup(fname, 0, 0);
                char *namebuf = (char*)alloca(namesz + 1);
                if(mscn->datamap.lookup(fname, namebuf, namesz + 1)) {
@@ -184,6 +208,30 @@ bool MetaScene::scene_loaded(Scene *newscn)
                delete wscn;
        }
 
+       // extract the spawn node
+       if(!sdat->spawn_regexp.empty() && (wscn = newscn->extract_nodes(sdat->spawn_regexp.c_str()))) {
+
+               int nmeshes = wscn->meshes.size();
+               int nnodes = wscn->nodes ? wscn->nodes->get_num_children() : 0;
+
+               if(nmeshes) {
+                       Vec3 pos;
+                       for(int i=0; i<nmeshes; i++) {
+                               const Sphere &bsph = wscn->meshes[i]->get_bsphere();
+                               pos += bsph.center;
+                       }
+                       pos /= (float)nmeshes;
+                       sdat->meta->start_pos = pos;
+
+               } else if(nnodes) {
+                       // just use the first one
+                       SceneNode *first = wscn->nodes->get_child(0);
+                       sdat->meta->start_pos = first->get_position();
+                       sdat->meta->start_rot = first->get_rotation();
+               }
+               delete wscn;
+       }
+
        int num_medits = sdat->mtledit.size();
        for(int i=0; i<num_medits; i++) {
                // perform material edits