select and move exhibits

[laserbrain_demo] / src / exman.cc

diff --git a/src/exman.cc b/src/exman.cc
index d93c2ff..21e0074 100644 (file)
--- a/src/exman.cc
+++ b/src/exman.cc
@@ -1,3 +1,4 @@
+#include <float.h>
 #include <algorithm>
 #include "exman.h"
 #include "exhibit.h"
@@ -12,6 +13,11 @@ ExhibitManager::ExhibitManager()
 
 ExhibitManager::~ExhibitManager()
 {
+       clear();
+}
+
+void ExhibitManager::clear()
+{
        int num = (int)items.size();
        for(int i=0; i<num; i++) {
                delete items[i];
@@ -56,7 +62,8 @@ bool ExhibitManager::load(MetaScene *mscn, const char *fname)
 
                        const char *amatch = ts_get_attr_str(node, "match_node");
                        if(!amatch || !(snode = mscn->match_node(amatch))) {
-                               error_log("regexp \"%s\" didn't match any nodes\n", amatch ? amatch : "");
+                               error_log("ExhibitManager::load: regexp \"%s\" didn't match any nodes\n",
+                                               amatch ? amatch : "");
                                continue;
                        }
 
@@ -67,6 +74,25 @@ bool ExhibitManager::load(MetaScene *mscn, const char *fname)
                                continue;
                        }
 
+                       const char *desc = ts_get_attr_str(node, "description");
+                       const char *voice = ts_get_attr_str(node, "voiceover");
+                       if(desc || voice) {
+                               ExData exd;
+
+                               if(desc) {
+                                       exd.text = std::string(desc);
+                               }
+                               if(voice) {
+                                       exd.voice = new OggVorbisStream;
+                                       if(!exd.voice->open(voice)) {
+                                               error_log("failed to open voiceover: %s\n", voice);
+                                               delete exd.voice;
+                                               exd.voice = 0;
+                                       }
+                               }
+                               ex->data.push_back(exd);
+                       }
+
                        ex->set_node(snode);
                        items.push_back(ex);
                }
@@ -76,19 +102,63 @@ bool ExhibitManager::load(MetaScene *mscn, const char *fname)
        return true;
 }
 
+ExSelection ExhibitManager::select(const Ray &ray) const
+{
+       ExSelection nearest;
+       nearest.dist = FLT_MAX;
+
+       int nitems = items.size();
+       for(int i=0; i<nitems; i++) {
+               ExSelection sel = items[i]->select(ray);
+               if(sel && sel.dist < nearest.dist) {
+                       nearest = sel;
+               }
+       }
+
+       return nearest;
+}
+
+ExSelection ExhibitManager::select(const Sphere &sph) const
+{
+       ExSelection sel;
+       if(!items.empty()) {
+               sel.ex = items[0];
+               sel.selsphere = sph;
+               sel.validmask = EXSEL_SPHERE;
+       }
+       return sel;     // TODO
+}
+
 void ExhibitManager::update(float dt)
 {
        int num = items.size();
        for(int i=0; i<num; i++) {
+               // if the exhibit is not part of a scene graph, first call its
+               // node's update function (otherwise it'll have been called recursively earlier)
+               if(!items[i]->node->get_parent()) {
+                       items[i]->node->update(dt);
+               }
                items[i]->update(dt);
        }
 }
 
+void ExhibitManager::draw() const
+{
+       int num = items.size();
+       for(int i=0; i<num; i++) {
+               items[i]->pre_draw();
+               items[i]->draw();
+               items[i]->post_draw();
+       }
+}
+
 static Exhibit *create_exhibit(const char *type)
 {
        if(strcmp(type, "static") == 0) {
+               debug_log("creating static exhibit\n");
                return new Exhibit;
        } else if(strcmp(type, "blobs") == 0) {
+               debug_log("creating blobs exhibit\n");
                return new BlobExhibit;
        }
        error_log("unknown exhibit type: %s\n", type);